one kind of bud-shaped forging of the forging process analysis diagram shown in Figure l. Beat piece 251 Figure Figure 1 of this material is strong 2Cr13 stainless steel forgings, volume 40, forging a narrow temperature range, we use 250kg air free forging,hollister scs. Forging Weight 1,Hollister wien.65kg, with the fire consumed the first rough cut weight 2.1kg, cutting size ~ 60 × 95. This forging in terms of material point of view, or from the complexity of the factors are very difficult to consider forming forgings. This forging of the biggest technical difficulty is 40 × 60 face difficult card out of the buds. Process requirements blacksmith made 40 bore, thickness of the drain plate 60 a. We use two methods of similar processes, the effect is quite different. 1,hollister ireland. Process compared to the bud-shaped pieces of the original upsetting forging process and improved forging process of comparing column in Table l. 2. Effects of riveting more rust Hang Tun Table 1 of the original r forging forging forging process and the improved contrast of the original forging process removal Mount improved industrial forging deformation processes of boron removal process times the fire resistance class Mu pressure deformation processes play wide -1-1 compression sac , F + __1n laugh hanging Taiwan Taiwan trapped. lIIl (] Ye Ni Hui Hui head hit flat playing surface iI 2 emblem forged from C === b) {play flat L emblem forging work] 3 [t hit flat complex (tI4 classes) 2] made good at two levels linked to two ∈ accounting accounting level 3 pull ∈ insects are more positive use of the same blank, the application of the same equipment and tooling, the effect varies greatly. Application of the original forging process, the production of four, qualified 3. Main problems are as follows: (1) 40 end of the first concave varying degrees of heart, of which two form a sandwich; (2) in leaf shape and shank junction folding defects occur; (3) forging a very irregular, and the production and inefficient. Application of improved technology, produced a total of 38, except two blade sizes for repair, the rest are all qualified. Complete forging technology 17 1995 2 17 2 / forging time on the oxidation (burning) of the Coal Mine Machinery Factory of Beijing pass safety standards, and Lin flesh learn fr,abercrombie,. Abstract This paper discusses the heated metal, the impact of oxidation (burning) of several key factors, such as: heating temperature sour, heating time, the furnace gas composition and the chemical composition of metals and metal billets relative surface area,hollister, and discussed the forging of burning computational problems. That the correct calculation of the heating norms primarily by burning billets relative surface area (surface area and mass ratio) as the basis, and gives several burning heating mode and two tables calculate the thickness of the blank to The Q test, clean. r. '. , Keywords pad dignified fall i wire count blanks 1T. _ _-● r an eleven. , A, I, / eight II pieces, in a certain production conditions, the material re-calculation error, with the exception foreword by forging complex shapes, volume calculation error, is that burning the calculation error. If it is free forging, forging production plant is generally not in the burning of metal is a heavy seasoning weight calculation test, therefore, important for the calculation of expected accuracy problems. For hot forging + production,abercrombie, you should do the process of even higher if several tons, dozens of tons of steel and even more expected of course also includes a re-trial for forging material has been cutting to size, once the material re- The calculation is wrong, to overcome the end of the first concave heart defects, reducing the fire times, forging quality has significantly improved the appearance of 3. Analysis of improved process technology the biggest difference is in the original forging process based on the first play to increase the flat process. The following is a combination of their own forging process effectiveness analysis features,abercrombie amsterdam. (1) the application of the original process method, compression pull station, the hammer and the forging of small contact area, card table is small, only 60 × 30, material center of distortion, so the formation of concave heart defects in the application of improved methods of forging process, along the radial direction is the first blank is equivalent to playing flat radial upsetting, billets formed around the protruding material flow along the radial direction of the large,Abercrombie nederland, but the length remained the same; and then pull the compression station, the both ends of the convex the end of the first part of the heart to form the Ministry of depression compensation,hollister, the concave heart defects greatly reduced or even disappear 18 (2) using the original forging process, forging the first round after the two sets of radial difference between large, flat leaves play, due to large deformation, physical connection is easy to produce two folding defects, and hit into a 40ram thick flat oval with the same shank diameter, after upsetting then leaves, leaf thickness and size difference between the shank greatly reduced,hollister, resulting in two physical connections folding greatly reduce the chance of missing dance (3) oblate compression to overcome the phenomenon of clamp with meat, forging almost no clips in the rotation, improved compression efficiency. (4) Department of upsetting leakage Handicap 5 to 8 should be ground into a corner,hollister, which eliminates the physical connection of the two folding defects. However, rounded corners can not be too large, over the General Assembly to increase the consumption of metallic materials. Rounded by the regulation, will play a useful role. Short, flat drawing by playing the long process, improve the stretching effect, it is suitable for a small card table, cross-sectional difference between the freshman class of forgings stretching Topics related articles:        相关的主题文章： Zhou Lian. Materials Science and Engineering Manual EM]. Beijing 9 and other process parameters the same Placed side by side for a few or a dozen parts

,Abercrombie nederland S-shaped pieces forming process parameter optimization and experimental study analysis shows that, based on PFEA, ANN and GA for the S-shaped pieces forming process parameter optimization is feasible, and has some practical value. References: [1] Xie Shikun,abercrombie. Mesh and its parameterization in sheet metal forming finite element analysis should be [5] [6] [7] [8] with [D]. Nanchang: Nanchang University, 2005. Tanjian Hao, Zhang Jing. Based on orthogonal planning forging process design criteria for optimal experimental study [J]. Forging Technology, 2006,31 (2) :97-101. Xie Shikun, flowers,abercrombie amsterdam, Guo-Tai Yang. CAD / CAE integration in the finite element model of conversion of [J]. China Mechanical Engineering, 2005,16 (5) :428-431. Xie Shikun, flowers, Guo-Tai Yang, et al. The parameters of the complex curved surface meshing method [J],hollister. Plasticity Engineering, 2005,12 (1) :29-33. Xiao Guanyun, Xie Shikun, flowers, and so on. Based on PFEA, ANN and GA U-shaped pieces of sheet metal forming the shape optimization [J],hollister ireland. Mold Industry, 2006,32 (12) :1-2. NaderAsnafi. Onstretchandshrinkflangingofsheetalumi-numbyfluidforming [J],hollister. MaterialsProcessingTechnology ,1999,96:198-214. Xie Shikun, flowers, Guo-Tai Yang, et al. Dynamic explicit algorithm based on the automotive panel forming process finite element [A]. North Third Conference Proceedings Plasticity [C]. Baotou ,2004.71-75. Hecht-NielsenR. Theoryoftheback-Propagationneuralnet-work [A]. ProceedingsoftheInternationalJointConferenceonNeuralNetworks [C]. WashingtonDC ,1989.593-6O5. United Development Company Beijing vary depending Hui Hui Machinery Co., Ltd,hollister scs. Beijing Electrical Co., Ltd. United Development Corporation is a wholly-owned enterprises in China to set up Beijing high-tech enterprise, specializing in electric-hydraulic hammer (liquid air hammer) technology for a space free steam hammer and hammer forging to transform, to undertake a variety of major tonnage of steam - air free forging and die forging hammer transformation and electro-hydraulic hammer, quickly forging, hydraulic press machine design and manufacture of complete sets of projects to meet national energy-saving and environmentally friendly development requirements. The end of 2000 in Changchun FAW Forging Co., Ltd. and Baoshan Iron & Steel Co., Ltd. in 2005 in a special branch of the electro-hydraulic hammer steel transformation projects, our company with advanced technology,Hollister wien, reliable quality, good service and reasonable prices fell swoop; 2002, and completed the transformation of Changchun FAW hammer the second phase. This indicates that our products in the same industry leading level. Has for the Shougang Group, FAW, Hafei, too, NAC, Baosteel and other steel metallurgy,hollister scs, aviation, automobile manufacturing, shipbuilding, military, oil machinery, mining machinery, heavy machinery and specialized forging enterprise transformation of the three hundred Taiwan hammer. In recent years, more sets of machine hammer to undertake projects, to the end of 2006, users of the machine has delivered more than three units. The hammer is fully capable of a continuous three-shift production to meet the needs of users. To this end, China Machinery and Electronic Daily Company's services: quality first, customer first, service time,hollister, provide users with satisfactory products and services. Address: North Street, Haidian District, Beijing Xizhimen age 45, Block D, 1601,1603 light gardens Postcode: 100044 Tel :010 -62223338 / 9,62218886 Fax :010-62260635, hUp: / / www. beijing-yihui. comE-mail: tec @ beijing-yihui. com, bjyihui @ sohu. net Wuxi Office: Address: Wuxi City,abercrombie, Jiangsu Province Economic Development Zone, Huishan 102 Jin Hui Road Postcode: 214174 Tel :0510 --83,596,685 / 6 Fax :0510-83596689 Topics related articles:        相关的主题文章： music and translated Peter Remove the first child die forging and have made certain benefits

The basic shape of the deep drawing parts common development and application of test equipment Flow, so as to achieve the purpose of regulating the BHF. In this paper, power supply,adidas climacool hose, slide-wire rheostat circuit and multimeter to adjust the composition of the different power values. BHF control system shown in Figure 3. Rainbow w, Jj ∞ Yi Pao DC power management products is busy {H 3 BHF control system diagram is well known, deep drawing process the deformation zone prone to wrinkling phenomenon, currently the most extensive and effective prevention measures is set blank holder. Blank device is reasonable and effective, the key is the size of the blank holder force is appropriate. BHF is too small to resist wrinkling instability trends; BHF is too large,adidas climacool, in vain contributed to a dangerous section of the rupture. Visible BHF deep-drawing process is a very important process parameters. As in the drawing process, wrinkling instability trend is different. In the beginning stages of drawing,adidas climacool chill, the trend of increasing wrinkles, BHF power should be gradually increased since then, the trend of reduced wrinkling instability,adidas la trainer, BHF should be reduced accordingly, we can see almost the ideal platform BHF should be change. To this end, wrinkle-free blank holder force,adidas climacool schuhe, subject to the critical wrinkling conditions, should be to ensure the premise of rough do not wrinkle, select the value as small as possible. However, drawing sheet,adidas neo, the corresponding limits on the investment does not wrinkle deformation is generally small, in this case if a single degree of deformation as a sheet forming limit, you can not truly reflect the limits of plate deformation. To this end, the production of wrinkle preventive measures to stabilize the deformation process to proceed, in order to play the buried plate deformation inherent ability. Therefore, to set the appropriate size of the blank holder force, in order to fully reflect the board's Crossing - Apartments shed for cattle cross ● a salary limit of deformation, the need to pull the material by the deep drawing process of carrying capacity constraints. Towel sheet deep drawing process to ensure its smooth shape is a necessary condition for the maximum drawing force f should be small risk of rupture of the carrying capacity of cross-section,adidas online shop, therefore, determines the maximum allowable value of BHF. As the ultimate bearing capacity by plate material properties, like dangerous broken and nervous stress and deformation effects such as, in general, it is also changing during the forming process, and therefore, the maximum allowed value of BHF forming process in the whole should also be constantly changing. In summary we can see, in the deep drawing process,adidas schuhe, the critical condition of wrinkling and ultimate bearing capacity are necessary to determine the minimum and maximum allowed BHF BHF, and in the deep drawing process are changing. Can be seen, the pressure side of the existing equipment to provide such changes BHF is very difficult. Therefore, the existing devices to achieve BHF and changes in the regulation of exercise for in-depth study of Latin shape the law, is of great significance. This installation of the BHF-conditioning system, you can easily adjust the value of different BHF, which in the deep drawing process for the realization of the changing BHF, so forming conditions become more units to provide a reasonable basis. Fifth, the device operating characteristics of the device die size of the design: the axisymmetric part Dd = 160mm ~ For the most part non-axisymmetric die lip length L = 160mmc Figure 4 Calibration of the current relationship with BHF Figure made on the device resistance strain gauge pasted drawing force and blank holder force sensor operating range is 0 ~ 200kN respectively, and 0 - 250kN. 50 used a type of LVDT displacement sensor operating range of 0 - 100mm. According to the operating characteristics of the electromagnetic proportional pressure relief valve and pressure side of the scope of work force sensor, the device blank holder force is adjustable from 20 ~ 250kN. From the design of the die size point of view, this range of pressure and powerful enough to meet the requirements. Figure 4 shows the calibration of the device and the current value of BHF relationship. Six, the application of this choice of diameters D = 64,96,128 (mm) punch in the device on a drawing test. Test material for the 08AI steel, rough size Dn = 250mm, top cone diameter = D / Dd, deep drawing power of a stroke on the impact of the relationship can be seen in certain BHF, when K more hours, the smaller the required drawing force and drawing to a certain height after the break, this time mainly to bulging deformation when K is large, that is gradually drawing closer to the cylinder-shaped parts, the larger the required drawing force, this time to the main drawing deformation. and from the Figure 5 can be seen, cylindrical parts spare parts easily than conical shape, visible, cylindrical and conical parts there is an intrinsic link between the parts shown in Figure 5 relative to the top cone diameter of the impact force on the drawing shown in Figure 6 a K = 0.6, different BHF BHF deep-drawing power of a stroke on the impact of the relationship can be seen, the greater the blank holder force, required drawing force is also greater. (continued on page 37) 27 相关的主题文章： 2005.1-4\] Lu into water-soluble> 10% fully meet Taiwan QSTTIl5 a pair _ 9 = 16-230 the right combination of punch and die clearance of its single its convex surface

ObjectARX-based finite element systems integration and application of the wheel forming Spoke first contact surface pressure plate and the second upsetting blank, then the central punch and blank contact,adidas online shop, 4 Figure 4 pre-forming mold structure 1. Preformed billet 2. On the forming mold 3. Under the forming die 4. The central charge and the first five. Figure 5 Pre-sizing ring trellis forming process of the metal contact with the mold pressure exerted by the mold with a downward trend. One hub area for the free rigid zone, the material slightly downward movement, speaking out from the downward movement of the whole; and radial plate area materials upsetting role as a significant downward movement, and from the inside outward radial motion increases. This type of free upsetting deformation flow pattern inside the ring until the billet and forming contacts will change. As the billet outer ring contact surface with sizing increases, the resistance increasing constraints. Then spoke apparent shunt zone plate layer,adidas climacool schuhe, the inner layer of material diverted inward movement of the wheel hub area, the outer material then flows to the rim area,adidas climacool chill, which the hub cavity fill appear significant. At the same time, inside the wheel hub area also form a shunt layer, the metal wheels were up and down to the cavity flow. As the metal hub next to the intensity of the flow chamber upward mobility than the strength of many, therefore, the hub cavity is first filled with the next, then the hub cavity filled quickly. Wheel cavity is completely filled, with the continuation of the forming die under the pressure, wheel hub area and spoke quickly to the plate area of ​​the material flow of the rim area. When the upper and lower forming mold is closed, completely filled the cavity rim. From the initial pre-forming the equivalent strain distribution (upsetting the end) curved tunnel violent storm once prosperous blind jie pan crack crack for legacy Li. Figure 6 pre-forming process at the end of the speed vector and the equivalent strain distribution analysis shows that the stress and strain distribution within the workpiece is very uneven, with the increased travel on the forming mold,adidas schuhe, the metal deformation within the workpiece increases,adidas neo, board part of the largest radial deformation, the equivalent strain of 2.85, the metal rim of a small amount of deformation, especially in the outer rim, the other effect becomes 1.26. The analysis of the basic data have been used for actual production, if the strict control of the process step, after forming the shape and size of the wheels can meet the design requirements. Therefore, the calculation results show that the finite element analysis system integrated with high precision and reliability. 3. Upsetting rolling reduction of the impact of pre-filled cavity formed in the wheel of the whole process step forming process occupies an important position. After upsetting the pre-formed blank,adidas climacool, the general shape of the formation of wheel wheel shape,adidas climacool hose, and the rim part of the pre-forming quality will directly affect the shape and size after rolling, this use of the aforementioned integrated finite element analysis system,adidas la trainer, upsetting the main study volume of the cavity is full of pressure effects. In the actual design process conditions, the relative reduction ratio when the simulation were taken 72.3,75.1,78.1 pre-forming step of forming working conditions. It can be seen from Figure 7: When the relative reduction ratio is small, due to enter the pre-forming, the blanks were the first to the rim of the upper and lower cavity flow, and after contact with the inner ring with the sizing, so the first forming the outer rim . In the blank with the rim of the upper and lower chamber have some exposure to H abundance ratio is 78.1 ■ of Ju Figure 7 pre-forming at the end of the speed vector resistance, the metal flow to the inside of the rim. And then a smaller outer diameter blank, blank contact with the outer ring with sizing late, that is free upsetting stage longer. So this is the rim diameter ring of the role of the regional material flow has slowed, and the resulting corner the final stages of rim is difficult to full. The results show that: upsetting the relative rolling reduction of 75 or so, pre-forming is full of the best. V. CONCLUSIONS (1) prepared using VC interface program development based on ObjectARX AutoCAD, to achieve a pre-processing finite element analysis of graphical input and data exchange between modules, and finite element analysis system developed graphical interface. (2) in the VC environment, using WINDOWS process of finite element analysis system to integrate the various modules. (3) heavy plant 840HDS wheels, for example, for upsetting, pre-forming process step simulation, the results were consistent with the site, the level of integration and analysis system accuracy has been verified. (4) analysis of the upsetting rolling reduction of the preformed cavity filled with the impact of process design in the field conditions, upsetting the relative rolling reduction of 75 or so, pre-forming is full of the best. References 1 Wang Fujun, Zhang Zhimin, Zhang Wei. AutoCAD2000 environment C VC + + application development tutorial. Beijing: Beijing Hope Electronic Press, 2000.2 Qi Shu workshops. VisualC + +6.0 application user interface, pre-production example. Beijing: China Water Power Press, 1999.3 Jiansheng, Guohui Guang, Jie Sun first. Rigid-plastic finite element software TFORM2 its application. Taiyuan Heavy Machinery Institute 1997, 18 (3): 255 - 2595 相关的主题文章： c1Step4501andStress-effective blanking a must coat the aperture processing mode than on the larger diameter of the lower die

Forging burr hole punching differential Does not produce punching burr, thus saving work of cleaning up glitches,adidas climacool schuhe, the economic effect is that the fort off the side of the wall i words Du Kui health - poor private school leek j soap / bfj perforated bamboo '0 touch forgings, all with red hole with skin. As the punching slot model with skin forming in forging a greater temperature drop, greater resistance to deformation, so the thickness can not be designed too thin, the minimum thickness was 3ram. Excision with skin punch punching die. In punching, due to the hole and punching die forgings concave touch not completely fit, skin is still in limbo, but when there is a tear in the punching zone, so the bottom of the hole in forging a greater vertical burr. This bore burr, clean up is very difficult, especially the small size of the hole even more irregular, seriously affecting the quality of forging and cost. On the basis of practice in the production, we developed a referred to as In this paper, this method specifically to be addressed. First, the traditional method produces burr punching Analysis conventional punching method shown in Figure 1,adidas la trainer, the lower section in red always have a greater burr, shown in Figure 1A at the enlarged map. Figure 1 shows, punching die is at the cusp of cutting edge, when the punch is easy to crack. Must be designed into a small plane,adidas climacool hose, so as reduced height, forged in the area is in suspended state. Punching deformation will occur when the skin punching, especially more so this is just hot punching burr reasons. . . . +. Burr thickness and height of buildings, mainly due to forging material strength, performance, punching the film thickness,adidas neo, punching die size of the gap between the convex and concave grip, die wear state, as well as forging temperature and other factors. Week 1 class Simulium Kai Rong Si surface tellurium Figure 1 hole punch 2 holes 3} forging die in 4 hole punch skin eleven collapse angle 6 with crack with a bright wide burr burr height E through I ● improve the impact because, although able to restrict to a minimum on the burr, but not cutting out completely in this way gross farming without forging, which always require an additional secondary deburring process. In order to obtain burr-die forging, we test referred to as a A spit up too much time punching punching around the forward section 2 in Figure 1. Hole punch 2. 3 holes forging. Shen} hole punching die a skin thickness of an embossing height and then a second process step, the reverse separation punching. Shown in Figure 3. 18 Figure 3 Reverse-cut application of section separation} 1 hole punch 2. 3 hole punching concave horizontal forging film a one touch 4 punching punching collapse forward angle n. A reverse angle of a forward fall punching punching punching bright light with a reverse punch with a skin thickness seen from Figure 3,adidas climacool, the forward and reverse embossed die-cut separation of punching,adidas climacool chill, cutting height is the differential. Therefore, as shown in Figure 1,3 shows the differential punching,adidas online shop, punching differential surface without tearing off the red zone,adidas schuhe, so no vertical spikes. Therefore, to achieve the purpose of punching without burr. Third, the differential of about punching process, design rules 1. Forward embossing punching punch slider should be adjusted under the dead, so that the next location of dead skin thickness in half of the punching position can also be slightly more, but can not make punching and forging skin separation. General h a f Ji ~ curse j. 2. After punching the reverse isolation of forging punching forward, flip 180. And placed within the die, and then reverse the separation punching, punch the bottom dead center position of the film and punching should be separated to forging. 3. Should pay attention to (1) When the forging parting line shape is symmetric under a forward and reverse punching punching the punching die is the same mold. (2) When the forging parting line shape is asymmetric under the forward and reverse punching punching the punching die can not use the same mold. Because punching is positioned by the shape. In order to ensure the accuracy of positive and negative cutting position, it must design their own special punching die. (3) If it is a continuous multi-station punch. Both positive and negative cutting process step according to the method of continuous punching. Fourth, no burr punching the economic effects of the differential sum. Differential punching the new method can be burr-hole die forging, thus eliminating a lot of deburring workload, especially for small size with irregular hole punching die forgings, it is a kinds of good ways to teach if the economy is obvious. After Yu 相关的主题文章： unless the strain is very large. 3. Whether in high or low temperature zone deformation White pine ratio of 0.3 concave die cavity shape and size

Asynchronous rolling technology and its application in the magnesium alloy -9. In nine out at Dake, Muxiao Sen, et al. Experimental study of a large extended asynchronous rolling IJ]. Iron and Steel, 1999,34 (2) :29-31. Cui Yu are. Asynchronous oriented silicon steel strip rolling recrystallization studies [D]. Shenyang: Northeastern University, 2000. Liu Yan sound,adidas climacool chill, Zhao Xiang. Asynchronous industrial copper recrystallization texture of cold-rolled and research IJ]. Metal Technology,adidas la trainer, 1990,26 (3): B198 an B202. Liu Gang, Wang Fu, Qi Kemin, and other asynchronous rolling texture of grain oriented silicon steel in the thickness distribution along with the development of IJ]. Metal Technology,adidas online shop, 1997,33 (4) :364-369. GAO Xiu Hua, Qi Kemin, leaves any boat, and so on. Rolling of thin silicon steel with asynchronous three recrystallization IJ]. Materials Science and Technology, 2005,13 (4) :384-386. HwangYM, TzouGY. AnalyticalandexperimentalstudyonasymmetricalsheetrollingIJ]. Int. J. Mech. Sci. , 1997,adidas neo,39 (3) :289-303. Liu Gang, Qi Kemin, Wang Fu, et al. Induction ratio of 3% silicon steel rolling texture transition effects IJ]. Metal Technology, 1998,34 (4) :400-405. Liu Gang,adidas schuhe, Qi Kemin, He Huijun, and so on. Asynchronous oriented silicon steel rolling texture formation and transformation mechanism of IJ]. Iron and Steel Research, 1999,11 (1O) :30-33. Lvai Jiang, Jiangqi Wu,adidas climacool, Wang Fu, et al. Cold-rolled high-purity aluminum foil asynchronous rolling texture of the impact of IJ]. Metal Technology,adidas climacool hose, 2002,38 (9) :974-978. KimSH, YouBS. YimCD, eta1. Textureandmicro-structurechangesinasymmetricallyhotrolledAZ31magnesi-umalloysheetsIJ]. MaterialsLetters,adidas climacool schuhe, 2005,59 (29-3O) :3876-3880. WatanabeH, MukaiT. IshikawaK. EffectoftemperatureofdifferentialspeedrollingonroomtemperaturemechanicalpropertiesandtextureinanAZ31magnesiumalloyl_J]. Jour-nalofMaterialsProcessingTechnology, 2007,182 (1-3) :644-647, IeeSH. LeeDN. Analysisofdeformationtexturesofasymmetricallyrolledsteelsheets [J]. InternationalJournalofMechanicalSciences, 2001,43 (9) :1997-2015. Zhongjia Xiang, Zheng Xiuhua, Liu Ying. Metal Tutorial [M]. Beijing: Beijing University of Technology Press, 1995. JiYH, ParkJJ, KimWJ. FiniteelementanalysisofseveredeformationinMg-3A1 - 1Znsheetsthroughdifferential - speedrollingwithahighspeedratioIJ]. MaterialsScienceandEn-gineering, 2007, A454-455 (4) :570-574. WatanabeH, MukaiT, IshikawaK. Differentialspeedroll-ingofanAZ31magnesiumalloyandtheresultingmechanicalproperties [J]. JournalofMaterialsScience, 2004,39 (4) :1477-1480. Xing, Zhen-Hua Chen, Wei-Jun Xia, et al. Asynchronous rolling of AZ31 magnesium alloy sheet structure and properties of IJ]. Thermal processing, 2006,35 (2O) :22-25. 相关的主题文章： . 23. Subscribe National unity ISSN CN61-1133/TG which the coefficient values ​​and work space a higher value and the value of cold-rolled sheet has a high forming limit

Drawing method of manufacturing double metal rod Organization of the diffusion layer and brittle metal compounds asked CuA1, etc. (43400 ℃ the following as the main organization of the diffusion layer to form fine-grained,adidas la trainer, so that welding strength increases; 400 ℃ or more thick due to the formation of intermetallic compounds, resulting in welding strength reduction of thermal management set-degree toe T (℃) Figure 5 sets out the heat treatment specifications for strength of four, the conclusion (1) with double-pull method of manufacturing metal rods, in order to obtain high welding strength, should be used in large-diameter the outer tube. (the switch 28) capacity and lubricant film strength, prevent lubricant film rupture. a large number of trials: the type of lubricant properties of the mold and the workpiece, adding a certain proportion of the extreme pressure additive, or a certain amount of solid lubricant, it has achieved good results. join extreme pressure additives, mainly to increase the lubricating film on metal surface adsorption capacity to produce sulfur, phosphorus, chlorine compounds, generate iron sulfide,adidas climacool hose, ferric chloride and other chemical film, to maintain the lubricating film deformation zone of solid additives to the metal surface is mainly filled with tiny pits,adidas climacool chill, so that the contact points of friction increased, reducing the friction coefficient on the other hand, solid additives high stability, high temperature lubrication can also play a role on the stainless steel draft beer barrel head, the dry plate by the high hardness, intense deformation, resulting in a high-calorie, also called the lubricant must have a strong cooling capacity. Therefore, we have developed with extreme pressure additives, solid additives for water-based lubricant as head of the technology of deep drawing lubricant, its application is better. (3) stainless steel burr blank blanking blanking plate actinides process, inevitably to be glitches, blanking die if not timely maintenance work in the blanking blank edges will result in higher glitch. Kuai has been intense these hair-hardening, so the rough drawing with the burr, the easy pull hurt the mold surface, so that the mold surface to generate more injuries,adidas climacool schuhe, and will produce more chips on the one hand part of the mold surface and the surface interaction scars, scratches the surface of the workpiece; the other hand, the chips generated when drawing with mold and the workpiece to the role of the surface of the workpiece or the workpiece and Ma Hang mold surface defects in the new strain, so the production Sus304 head, (on the next 24) (2) double metal drawing process, internal and external material contact surfaces there is a big speed difference,adidas climacool, which is conducive to welding metal layer (3) The greater the degree of deformation, welding metal rod double greater intensity, so the actual production process,adidas schuhe, can be as high as possible improve the degree of deformation (4) post weld heat treatment can not only eliminate the residual stress, and can improve the welding strength aluminum-copper metal rod double optimum heat treatment specifications for the 40o ℃ × lh. better to increase a deburring process V. Conclusion of stainless steel draft beer barrel head drawing mechanism of defect generation and control analysis, and assessment of actual production,adidas online shop, you can obtain the following conclusions: (1) deep drawing process, the mold and the intense friction between the workpiece, resulting in a lot of friction heat and thermal deformation, resulting in the workpiece and the die of the question, adhesive wear occurred, which is the head surface of the drawing because the nature of defects (2) a reasonable selection of drawing die materials and lubricating materials, parts and tooling to reduce the friction coefficient of Q , so that the mold and the workpiece surface to establish a good extreme pressure lubricant film, is to achieve the draft beer barrel head surface defects drawing an important way to control (3) copper alloy mold with water-based lubricant with the deep drawing of stainless steel draft beer barrel head ,adidas neo, no scratches scratches and other surface defects, thus achieving head drawing surface defect control, significantly improve labor productivity. References ... higher Chinese currency controls and other draft beer barrel stainless steel surface, pull the floating head defects Pull grip Ding Yi, Hebei Science and Technology identified the research material 1993.12 design mold _ [industry I9942 References Akira Kubota [11, pressing the outbreak of Law l T 5 0 then Formosa nature of the metal processing, I987; 28: (I1) I] 21 ~ 1I27I2JHughes, K.EandSellarsCM.HotExtrusionofCompoundandCladBilletsofMildandStainlessSteelMe1-alsTechnology, l982; 9: (1o) 446 [in the village of Ya-yong 'Mu Qing = Lang, high-car extension of which 1 Fu an heir-inch' drug use lead pull twilight on the holding tube 0, ÷ of plastic processing .1989; 30: (7] 105l ~ 1057 [41 Liu Zhongqi, Di Bin welding dissimilar materials, Science Press, 1990 相关的主题文章： design changes etc. also affect the accuracy of tilt changes Ma Qingfang machinery industry in 2000 common technology vibration targeted research

,abercrombie hamburg WH590 liquefied gas tanker with the head of the processing table (mm) projects the average ellipticity of the smallest diameter of the circumference of the total thickness of the high cross-section shape 220059O tolerance 6993DlD2D3D4l1l1. oo ~ +28-3 ~ +3 o ~ + l81700521992199220122012200212.5595927004220122002201220222Ol2l1.85949 see from Table 3, the geometric dimensions were satisfactory. And neither have wrinkles, drum kits, and no over-thinning. Groove side of the PT, MT and head inside and outside surface of the weld head to RT, the results were satisfactory. 20 V. Conclusion For WH590 This high-strength non-quenched and tempered steel processing ● ● Head should note the following: (1) when the device is able to process, try to cold. (2) processing, cutting size is expected to rise by more than 4 under the standard diameter is appropriate. (3) cold, to prevent cracking, you can press the ● 70 or so and then annealed shape. (4) when the annealing temperature heat treatment to 565 ± 15 ℃ appropriate. ● ● Forging Technology 2001 two anti-burr-free blanking the top mechanical design * Zhongyuan Institute of Technology Department of Mechanical Engineering (450007) Li Jianhua,hollister dortmund, a summary discussion of the burr-free blanking process, the role of anti-and counter-top device to determine the top edge, and a counter-top agencies and design parameters, the results show that the anti-top body with high reliability and practical applications. Keywords anti-top body punching burr I. Introduction As we all know, the blanking of sheet metal, whether ordinary or fine blanking blanking process, the next piece was washed with a vertical surface are glitches. Burr height was washed pieces of material depends on the mechanical strength, material thickness,hollister wijnegem, punch and die size of the gap edge wear and other factors. Although these factors can improve the burr height limit to a minimum, but not punching a burr-free parts. Under normal circumstances, blanking burr can be further improved, but can not guarantee that there are no glitches. , For the assembly process and the requirements on the part after the punching burr is often a follow-up to an additional clean-up process, usually with a roller or belt polishing polishing to remove the burr, which not only need to configure the appropriate special equipment, cost of materials ,hollister hamburg, hours of work and energy,hollister köln, but its effect is not ideal, this is because the plastic material, some glitches are often backward parts larvae can not be completely removed within the L, follow-up will also affect the assembly process so smooth. In short, the clear need for an additional cost of production glitches and processing costs. Blanking burr to solve problems, we study a burr-free blanking process, burr-free blanking process here in particular is one of the top anti-blanking agency for further discussion. Second, no burr burr-free blanking process blanking process corresponding to the punching die shown in Figure 1, * Henan Science and Technology 1999 scientific and technological project (991,110,352) ** Male, 46 years old, Associate Professor Received date: 2000 -05-20 red larvae L, the first piece placed in the die 2, do not punch down completely blanking 8, this is not entirely negative clearance blanking blanking, punching depth of its material thickness dimensions 8O about 8 blanking punch to the next destination location, do exactly the reverse punch punching 9, that the anti-top punch. Figure 1 burr-free blanking die 1. Anti-top die 2. The main red die 3. 4 on the template. The following template 5. Column-6. On the guide sleeve 7. Under the guide sleeve 8. The main red punch 9. Anti-top punch three,hollister roma, anti-anti-top roof mechanism design is the role of institutions as the main punch punch punch to the bottom position and began to return, it will be embossing the top of the waste back to complete the blanking process. 1. According to the anti-top design agencies burr-free blanking process, we know that top agency action against the design principles,ralph lauren, in the anti-imposed on top of the die pressure on the workpiece material removed before the material strength, and anti-top action must be completed. Therefore, the anti-top body design as the main red punch with the moving body, we can ensure the effectiveness of counter-top action and reliability. References 1GBI50 - 1998 steel pressure vessel. Beijing: China Standard Press,hollister euroma2, 1998:1312 Xueming De. Domestic and international pressure vessel code design progress. Fourth National Conference presentations pressure vessel set. Chinese Society of Mechanical Engineers Pressure Vessel Branch publishing, 1997:34 ~ 443 Yang Long,abercrombie münchen, Wu Lihui. WH59o (17MnNiNbVR) steel welding performance tests. Pressure vessels, 1997,hollister,14 (4): 24 ~ 3O4GB150-1998 steel pressure vessel. Beijing: China Standard Press, 1998:1185 Pressure Vessel Safety technical supervision order. Beijing: China Labor and Social Security Publishing House,hollister wien, 1999:4621 相关的主题文章： Zhengxian Shu 根据该工艺的实施参数 Haidian District

,hollister wien Reducing complex mold design corrugated sleeve 13. Underlay ring 14. Top block l5. Concave mold 16. Guide post 17 up and down the guide sleeve 58 consisting of two pads within a confined space, the pressure increased rapidly. In the rubber necking and discharge pressure and the formation of the axial spring force,hollister euroma2, the expansion of the middle of the waveform. Finally,ralph lauren, the model with the slider up, the workpiece under the action of the spring, from the upper concave mold play, the workpiece can be easily removed. 2. Included on the die die die,abercrombie madrid, concave mold, materials T10, hardness HRC60 ~ 65 on the concave cavity of the mold in maximum diameter (maximum diameter corresponds with the part) at the horizontal mode. The die cavity diameter equal to the straight wall part of the minimum diameter corrugated sleeve; take into account the size of the tube outside diameter tolerances, straight concave mold cavity wall part of the inner tube diameter to take the upper limit. Specific dimensions shown in Figure 3. △ l ~ 420.3l/3.2L- a 0.2l Day 140 (a) (b) Figure 3 combined necking die bulging (a) concave mold (b] on the die 3 soft soft punch Punch material is black rubber or polyurethane rubber. To ensure the correct shape after forming part of the waveform and smoothly removed from the corrugated sleeve, made of soft punch ladder-shaped,abercrombie hamburg, as shown in Figure 4, while, in order to store 4 software punch forging technology (4) 2001 aluminum alloy radiator stamping die design features of the computer,mulberry, Guangdong University of Technology Institute of Materials and Energy (510643) Xiaoxiao Ting ~ Liaoyi Juan Kuang Weihua Zhang Zheng-rong Sun Yousong summary of the computer with a high crest radiator red aluminum alloy sheet cutting mold design and mold characteristics precautions Keywords aluminum alloy computer radiator Die I. Introduction In order to improve the working environment computer components,hollister roma, computer time to ensure continuous and stable work and life,hollister frankfurt, the current host computer boxes are equipped with radiators,ralph lauren sverige, radiator called the computer Computer output of the radiator increases with the growth in computer production, growing demand for precision and mass production to meet the needs of the radiator on the computer L and the gap on some of the other processing, using stamping methods of processing,hollister dortmund, is considered the ideal processing solution. However, the radiator is a computer chip with a high dark parts, and compared with ordinary sheet metal stamping It has different characteristics. to understand and master these characteristics are conducive to rational design and manufacture of molds, molds for improving the quality of life and computer radiators are of great significance in view of the computer radiator punching a short history, has not yet experience in this area to see the introduction. To this end, we developed computer programs and radiator design and manufacture of stamping dies to some of the experience described below, for the peer reference. Second, the structural characteristics of the radiator and processing * This Imperial College has been Mould Technology, Huazhong Science and Technology State Key Laboratory of funding ** male child,hollister online shop, 53 years old. Associate Professor Received date: 2091 <) 3251. Structural characteristics as aluminum, light weight, thermal performance, and easy processing characteristics. So now the computer mainly used in aluminum heat sink material. Its structure, mostly high ridge sheet. Figure 1 are two computer radiator parts diagram. Figure la in which the flat-shaped radiator, Figure 1b shows a coronal radiator. Their shape are different, but are grown on the bottom plate is installed or foliage-like or narrow strip of dark spoke-like film. 2. Processing computer processing radiator forming the main line of the following processes: extrusion length (cut off) profile ditch a blanking (punching, cutting head, red gap, etc.). Third, stamping die design features of the computer radiator radiator according to the structure of the computer, materials and process characteristics. Mold design and manufacture of the following issues must be special attention: 1. Correct choice of punching direction of the radiator shown in Figure 1a, when blanking piece from the ridge side of (Jr surface) or washed down from the back (below) washed up? Choose a different direction blanking, punch and die design varied. In order to ensure the reliability and service life of mold. The use of punch from the top is more reasonable. This will not affect the thin edge die mold life, for the long ridge piece punch punching prevent problems in forming a soft punch can produce enough pressure, should ensure that the volume compression of the rubber volume Vl a where t is the soft punch volume, mm. Volume of the corresponding part of the tube, m a soft punch volume form factor: For polyurethane, a 1.165 ~ 1.175; black rubber for a 1095 ~]. tOZ. Fourth, the conclusions set of composite waveform model structure is simple, easy to operate and improve production efficiency} combined necking a bulging, the deformation zone stress state is good. Strain distribution is reasonable (compared with the natural bulging ridicule). References 1 Zhang sulfur automotive design Beijing: Mechanical Industry Press, 19992 Wang Tong thumb. Plastic pipe processing technology. Beijing: Mechanical Industry Press, 199g. 59 相关的主题文章： Topics related articles 板材金属加工 thus reducing travel necking

,hollister carugate Affect the life of extrusion die temperature factors and Countermeasures lasticformingtechnologyofthehorseshoewhichismadeby6061alumi-nurflalloyandsimulatestheformingprocesswhichrunsinDEFORM3Dsoftware. Fromthesimulationresults, wefoundtheinsufficientformingatthetopofthepart. Soweimprovethediestructuretocontrolthematerialflowandsimulatedagainandthematerialflowseffectively. Ithaeenshownthatfiniteelementsimulationcanimprovetheforgingprocessdesignlevelgreatly. Keywords: FEM; Diestructure; Numericalsimulation; 1 Introduction The metal forming process is a large elastic-plastic deformation process,hollister deutschland, mold design, process parameter settings,mulberry, etc. are reasonable shape will seriously affect the product and product quality. Metal forming technology with traditional research methods are , a long production cycle. With the development of computers, CAD, CAE software,hollister köln, widely used, traditional DEFORM is just based on a set of (visco) plastic finite element process simulation system for the analysis of metal forming and related industries of various forming processes and heat treatment process. By computer simulation of the entire process, helping designers: Tools product, process design, to reduce the cost of expensive field trials; improve tooling design efficiency, reduce production and material costs; shorten the new product with lubrication depending on the circumstances and other factors correct selection and adoption of appropriate measures, warm extrusion die life will be doubled. References: EliE2] [3] E4] [5] Hong Shen Zhang, Zhen-Peng Zeng. Pole high-temperature extrusion process and die design [J]. Thermal processing, 2000, (4) :32-33. Lee update,hollister belgie, Yang Yongshun. Spur gear and warm extrusion die improved numerical simulation [J]. Henan University (Natural Science), 2004, (4) :5-8. Lee update, Yang Yongshun. Spur gear temperature extrusion simulation [J]. Thermal processing, 2004, (7) :49-50. Jue-Liang. Spherical bearings square hole square hole temperature extrusion, cold combined fine blanking process [J]. Machinery Development,ralph lauren, 1999,abercrombie münchen, (1) :49-51. Fu-Xiang Tian. Valve closed warm extrusion process and die design [J]. Mold industry, 2005,abercrombie hamburg, (1) :38-40. [6] [7] [8] [9] [1O] [11] ZhangQing, ZhangLiling, QiuPing. CoupledThermal-Me-ehanicalAnalysisofWarmExtrusionforOuter-Race (VL.) ofConstantVelocityUniversalJointEc]. TheSeventhAsiaSymposiumonPrecisionForging. China, 2000. Caimei Liang, Ding Huilin, Hu Meng Long. New Tool Steel metallurgical heat treatment [M]. Beijing: Mechanical Industry Press,hollister, 2001. Chen Junfeng, Liqun Shen. Improve the fatigue resistance of the mold material means [J]. Shanghai metal. 1998, (2) :19-22. Xu Yaokun. Mold materials and heat treatment technology research on the impact of die life [J]. Forging technology, 2002, (4) :62-64. Zhao Changsheng,hollister neuss, ranking the construction of the village. Analysis of die failure of the basic factors [J]. Mechanical workers (thermal processing). 2003,hollister wijnegem, (12) :17-18. Hong Shen Ze. Extrusion process and die design [M]. Beijing: Mechanical Industry Press, 2000.55 相关的主题文章： on the surface of the above B Abstract from the small plate hole punching mechanism 约合标准展位达1300个