The heat treatment method integrating isothermal annealing,quench hot and double tempering was made on the cold-work die steel XW-42 for its strengthening and toughening .

采用等溫退火+高溫淬火+二次回火工藝對冷作模具鋼XW-42進(jìn)行強(qiáng)韌化處理国产欧美日韩精品一卡，提高了模具強(qiáng)度、塑性及韌性人人射人人看性爱视频，此工藝應(yīng)用于某型號表尺座的成形被操好爽视频，模具使用壽命由原來的2400件提高到7300件，極大地降低了生產(chǎn)成本欧美精品黑人性XXXXWWW。

Through the analysis of the technology of forming of automotive drawbar, the method of adopting three suits of simple die structure has been advanced with introduction to structure and operating process.

摘要通過對汽車拖鉤的成形性工藝分析91香蕉国产在线观看人员青，提出了采用三套簡單模具結(jié)構(gòu)的方法，并介紹了模具的具體結(jié)構(gòu)及模具工作過程性爱一级。

This paper presents the general methods and process of panel die design in PRO/E environment. The design can be top- down and bottomup. The emphasis is on the design and analysis of die surfaces under the PRO/DIEFACE including extensions, extension ratio, spring back ,etc.

本文探討在PRO／E環(huán)境下采用自頂向下和自底向上的方法進(jìn)行覆蓋件模具設(shè)計(jì)的技術(shù)欧美视频在线观看熟、方法和過程，著重?cái)⑹隼肞RO／DIEFACE進(jìn)行模具接觸面設(shè)計(jì)中文字幕黃色av、分析和空間曲面處理的步驟国产一级精品A级毛片，包括模具型面、工藝余料久久99视频首页、法蘭欧美专区91第三页、拉深筋、彈復(fù)角的生成和成形度分析等95网站在线观看。

During the semi-solid die casting processing, appropriate semi-solid casting parameters and the sizes of ingate area were researched ,also, the microstructures and mechanical properties of the component in semi-solid die casting processing were investigated .And effects of casting parameters on the performances of the component in semi-solid die casting processing and heat treatment on microstructures and mechanical properties of components made of A1 alloy were observed. A reasonable processing for an eligible semi-solid component in practice was basically obtained.

在壓鑄零件的過程中国产在线91精品免费，找尋合適的壓鑄工藝參數(shù)，以及模具內(nèi)澆口設(shè)計(jì)人操人人操人人超碰，對成形鑄件進(jìn)行了組織觀察精品自拍视频手机在线观看、性能測定與分析；研究了壓鑄工藝參數(shù)對半固態(tài)成形零件成形性能的影響以及熱處理對鋁合金零件組織和力學(xué)性能的影響看免费5XXAAA毛片om；基本上獲得了在實(shí)際生產(chǎn)條件下壓鑄出合格的半固態(tài)零件的合理的工藝路線天堂精品视频在线综合网。

In continuous extrusion forming process, the friction between the wheel groove and the feed is a driving force. The frictional energy and deformational energy change into heat, which makes the feed and the die's temperature field, strain field and stress field change.

在連續(xù)擠壓成形過程中，擠壓輪旋轉(zhuǎn)freeeexxxx性欧美，在變形體和模具接觸面上的摩擦功和塑性變形功的作用下无码毛片一区二区三区本码，變形體在塑性變形的同時(shí)，與模具及周圍環(huán)境進(jìn)行熱交換青草视频在线，促使變形體和模具內(nèi)的溫度場以及變形體的應(yīng)變場最近最新2019中文字幕免费看视频、應(yīng)力場等不斷發(fā)生變化。

Finally, simulation software was developed with Visual C++ and Delphi for 2D molding analysis of MIM, which affords facilities for the quality forecast of 2D thin wall parts and optimal design of mold and process parameters. In the research of molding performance of MIM feedstock, for the shortcoming of capillary rheometry, it was propounded that using spiral mold test molding performance of feedstock, and a set of spiral mold was creatively designed with quickly exchange gates and closed mold cavity. With the spiral mold, an orthogonal experiment was made on getting regress equation of flow length L〓 of the heavy alloy feedstock. Then the rule of L〓 varying with Q〓, P〓, and ΔT〓 was discovered. Q〓 ranks first in the influence on process parameters of molding performance, P〓 and Δ T〓 second. Therefore the injection rate Q〓 should be controlled primarily to improve the flow performance of feedstock.

在MIM喂料注射成形性能研究方面啪啪啪黄片视频海外版，針對毛細(xì)管流變儀測試法衡量流動(dòng)性能的不足大黑吊日逼视频，提出使用螺旋線模具測試喂料熔體的注射成形性能欧美www.，創(chuàng)造性地設(shè)計(jì)了一套可快換澆口，模腔封閉的螺旋測試模日韩精品网站日韩在线播放视频免费，并在螺旋測試模上采用正交實(shí)驗(yàn)設(shè)計(jì)最新中文字幕在线第一页，得出了高密度重合金喂料流動(dòng)長度L〓的回歸公式，揭示了L〓隨Q〓日韩一级婬片A片免费手机版、P〓91精品专区、△T〓和S〓的變化規(guī)律，并得出工藝參數(shù)對成形性能影響的強(qiáng)度順序?yàn)镼〓最大亚洲,欧美,中文,日韩,视频骚虎视频，P〓與△T〓其次色色网址最新，因而改善喂料流動(dòng)性能應(yīng)優(yōu)先控制注射速率Q〓。

In this paper, the finite element computational formulas of temperature field and deformation field for laser curve bending of sheets have been established on the basis of the non-Fourier heat transfer equation.

板料激光彎曲成形是一種不需外力和模具而僅靠內(nèi)部熱應(yīng)力來成形板料的工藝色色视频网址，是近十年發(fā)展起來的一種新的柔性成形技術(shù)超薄丝袜脚足j视频，而板料激光曲線彎曲技術(shù)近兩年才開始著手研究 [1 ，2 ] 男女免视频。

Both multi-point press forming and multi-step multi-point die forming make the full use of multi-step forming.

多點(diǎn)壓機(jī)成形和多道次多點(diǎn)模具成形充分利用多點(diǎn)成形的柔性特點(diǎn)18禁黄色在线网站，實(shí)現(xiàn)了對板材變形路徑的控制。

As a result, the intellectualization of sheet metal forming process is the higher level of new technologies such as press forming automation and flexible process system, by which not only can the feature of manufacturing technique be changed, but also the transformation of press equipment can be forwarded.

所以板材成形智能化過程是沖壓成形過程自動(dòng)化及柔性加工系統(tǒng)等新技術(shù)的更高級階段1024手机视频观看在线，不但可以改變沖壓生產(chǎn)工藝的面貌九色绿帽人妻论坛，而且還將促進(jìn)沖壓設(shè)備的變革，同時(shí)也會(huì)引起板材成形理論的進(jìn)步與分析精度的提高国产迷奸在线观看，在降低板材級別女人丨8毛片一级毛片，消除模具與設(shè)備調(diào)整的技術(shù)難度，縮短調(diào)模試模時(shí)間啊用力插视频，提高成品率和生產(chǎn)率等方面都具有十分明顯的意義大陆免费高清不卡黄色视频。

In the research of visual simulation software development, in order to build the software system model and flow analysis algorithm based on Cross-WLF viscosity model, and realize functions such as pre-processor, solver, parameter regress, data management, graph operations, some advanced software methods as OOSE (Object Oriented Software Engineering) and UML were applied to set up user model, static model and dynamic model of MIM simulation software. These models describe system function, event flow, structure and relation of classes, object interaction, structure of database and I/O file format.

在MIM喂料注射成形性能研究方面，針對毛細(xì)管流變儀測試法衡量流動(dòng)性能的不足国产毛片在线看线，提出使用螺旋線模具測試喂料熔體的注射成形性能欧美日韩国产高清视频，創(chuàng)造性地設(shè)計(jì)了一套可快換澆口，模腔封閉的螺旋測試模色一区二区，并在螺旋測試模上采用正交實(shí)驗(yàn)設(shè)計(jì)国产偷窥2020在线观看，得出了高密度重合金喂料流動(dòng)長度L_m的回歸公式，揭示了L_m隨Q_m好大好爽插我视频在线播放免费、P_m哈尔滨熟女真实老熟女无套、△T_m和凡的變化規(guī)律，并得出工藝參數(shù)對成形性能影響的強(qiáng)度順序?yàn)镼m最大动漫在线，尸m與△幾其次欧美精品色欧美精品，因而改善喂料流動(dòng)性能應(yīng)優(yōu)先控制注射速率Qm。