查询词典 die forging

The simulation results of the cylinder-block model were given in the article, consistent with that of Middlemen"s. It was shown that the block part could improve the uniformity of the flow distribution. The analysis of the flow field of some materials with different power-law factor in the die designed by Mckelvey was close to that of Mckelvey"s. It was shown that the flow distribution was uniform in the die that can producesheets with 1200mm in width. During the analysis the flow channel was divided into several parts to get the details about the fluid flow in each area. A conclusion was drawn after analyzing the influence of the die pressure on the flow distribution, that the higher pressure is good for the output and bad for the uniformity of the distribution. Simulation of the die applying the cylindrical main runner showed the fact that when the cylinder replaced the cone the change of uniformity was trivial. The uniformity of the non-block flow channel was so poor that the block in the proper position of the die channel was necessary. The project of the die for the wider sheet was put forth, and the analysis of the fluid flow in the die was shown.

本文模拟了圆柱管缝隙流模型的三维流动场，得到了与Middlemen结论一致的流动均匀性，并通过模拟直观地展示了采用阻尼块可以改善挤出均匀性的现象；分析了多种幂率指数的流体在Mckelvey等人设计的流道模型中的流动分布，得到了与Mckelvey的分析结果接近的压力降和流量偏差；本文建立了1200mm幅宽机头流道的三维有限元模型，并逐个分析各个区域和多个截面的流动分布状况，由此揭示了1200mm幅宽L-型机头流道内的流北京化工大学硕士学位论文动分布基本均匀，并在分析了机头压力对于挤出流动分布的影响后得出结论：较高的机头压力可以获得较大的产量，但是不利于物料均匀分布；模拟了采用圆柱管主流道时机头流道内的流动分布，得出结论：主流道由圆锥管改为圆柱管时对流动均匀性影响不大，通过设置适当的阻尼仍然可以达到挤出平衡；模拟了两端进料式圆柱管无阻尼流道的流动均匀性后得到结论：两端进料式无阻尼结构的流动均匀性较差，宽机头中仍然有必要设置阻尼块；确定宽幅机头流道的基本方案，并设计了一种宽幅防水卷材挤出机头流道的结构，通过流动模拟表明该种结构的流动均匀性较好；考察了宽幅机头对于不同厚度片材的挤出适应性，得到结论：当生产不同厚度的片材时，阻尼块高度需要调整。

Closed die forging or extrusion, drawing, upsetting, bending or free forging, flat rolling, profile rolling or tumbling cold, hot or semi-hot, mechanical press, hammer or screw press, rolling machine or orbital forging even coupled processes and spring-controlled tools, simple low-alloyed or stainless steel , aluminium or non-ferrous metal, titanium or nickel based alloys, massive or sheets, material flow or dieload analysis

Forming已经成功研制可支持目前所有制造业的软件应用程序，并可独立的仿真金属温度，机体使用情况或材料的处理：封闭模锻或挤压，钢绘，镦，弯曲或自由锻造，轧制，型材辊压或翻滚-冷，热或半热，机械压力机，锤或螺旋压力机，辗机或轨道锻造-更可加上流程以及spring-controlled工具，简单的低合金或不锈钢，铝或非铁金属，钛镍合金，大规模工程或床单工程，物质流或dieload分析。

Enterprise was founded in June 1987, then to 750 kg Kong Qichui mainly to die in Ningbo, machinery manufacturing industries producing all kinds of forging, production, sales forging professional manufacturers. 1998 in order to change the backward state of forging production, the company invested 107 million, added a 3-ton, 1 ton steam hammer to a dual-use space Taiwan.

企业创建于1987年6月，当时以750kg空气锤为主，为宁波地区模具、机械制造行业生产各种锻件，是生产、销售锻件的专业厂家。1998年为改变地区锻件生产的落后面貌，公司投资700万元，增添了3吨、1吨蒸空两用锤各1台。

Forging: We have 31 lines of professional forging equipment at our forging plant, they're die hammer, friction press, punching machine and trimming machine.

锻件：我们在锻造上拥有31条专业生产线，有模锻锤、摩擦压力机、冲床、热处理生产线、各种整理深加工设备。

The company mainly produces series of sales of various models C41 air hammer, 1T-10T of the electro-hydraulic free forging hammer and 1T-10T of the electro-hydraulic die forging hammer, JA31 Series Closed Single Point Press, T92Y Series Hydraulic automatic riveting machines and Y83 series of automatic machines and other metal scrap briquette machinery and accessories, complete product specifications and to undertake all kinds of forging machinery overhaul, according to loading, debugging and other services.

公司主要生产销售C41系列各种型号的空气锤、1T-10T的电液自由锻锤和1T-10T的电液模锻锤，JA31系列闭式单点压力机，T92Y系列液压自动铆接机及Y83系列全自动金属屑压块机等机械及配件，产品规格型号齐全，并承接各种锻压机械的大修、按装、调试等服务。

Drawbench Die Series :0.05-35 .00 mm Natural Diamond Wire Drawing Die, Polycrystalline Diamond Wire Drawing Die, imported materials and Polycrystalline Wire Drawing Die, Wire Drawing Die China-made, single crystal CVD Wire Drawing Die and other special mold.

主要产品：1。拉丝模具系列：0.05-35.00mm天然金刚石拉丝模、聚晶金刚石拉丝模、进口料聚晶拉丝模、国产拉丝模、单晶CVD拉丝模及其它特种模具。

Main processing PCB (ordinary die, die hard, complex die, die intensive, aluminum molds), FPCB die, metal molds, supporting the processing punch Stripping die, metal processing machines and PCB peripheral equipment, non-standard equipment design, Production.

主要加工PCB (普通模具、硬性模具、复合模具、精修模具、铝基模具)、FPCB模具、五金模具、加工配套的冲床模具脱模器、五金机加工及PCB周边设备、非标设备设计、制作。

The effects of the wheel hub part structure on the metallic deformation flow actions during die forging process were analyzed by using the methods of combining the finite element numerical simulation with the experimental study, and the metalic deformation flow rule during die forging process was revealed.

摘 要：采用有限元模拟和实验研究相结合的方法，分析了模具结构对航空轮毂件模锻成形过程中金属变形流动行为的影响机理，揭示成形过程中金属变形及流动的规律。

Comparting fatigue tests on TR upsetting and open die forging,this paper finds that the fatigue strength of the TR upsetting crankshaft is 16 — 22 percent higher than that of the open die forging crankshaft.

本文介绍了先进的TR镦锻法制造曲轴毛坯的工作原理。

3D-CTM (Coupled Thermo-Mechanical Forming Simulation) software for precision forging process of aero-engine blade was developed. The key technologies of 3D coupled rigid-viscoplastic thermo-mechanical FEM simulation of blade forging process were studied systematically. By using the remeshing method of contracting from the boundary to the inner, new mesh system from old distorted mesh system can be obtained. A method of modifying the position of nodes touching on the die according to its original normal was proposed to avoid "dead lock" problem due to uncontinuity of normal of scatted die meshes. The pseudo-static iterative algorithm was used to simplify the coupled thermo-mechanical computation. In particular, formulations to determine relaxation factor β was established for rigid viscoplastic FEM adopting penalty function method, and an improved cubic factor rapid algorithm derived from these formulations was proposed by combining with the advantage of advance and retreat search method.

采用基于边界构形的内缩法，实现了三维畸变网格的重新划分；提出了初矢修正法对触模节点的位置进行修正，解决了由于离散的模具网格的法矢不连续造成的&死锁&问题；采用准静态迭代法简化了速度场和温度场耦合计算过程；特别是针对减速因子β的选取，建立了适用于三维复杂成形过程刚粘塑性罚函数法有限元三次因子法的计算公式，并结合进退搜索法提出了改进的三次因子快速算法，提高了模拟计算效率和稳定性，在此基础之上，开发了面向叶片精锻过程的三维刚粘塑性热力耦合有限元模拟分析系统(3D-CTM)，系统的可靠性得到了圆柱体镦粗的验证。

No complex distressful things on your mind but only our love and care for each other.

无复杂痛苦的事情，对你的心，但只有我们的爱和照顾对方。

At first light, on his own initiative, Vick located the enemy emplacements andfired on them, using 15 rounds.

破晓时分，维克主动地去查找敌军的炮位并向它们开火，打了15发弹药。