复杂铸件热冷芯盒图纸设计中的优化技术

简述了目前热、冷芯盒设计中几个绘图技巧及附件结构设计方法的不足，重点介绍和讨论了复杂铸件一盒多芯的布局、CAD设计作图技巧、上顶芯板及射砂板布局、简单结构剖示图、可系列化设计的附件、可标准化设计的附件等优化设计的经验和体会。     

冷芯盒几种附件的通用性优化设计

简单介绍了冷芯盒底框、下顶芯板、下顶芯杆及其压板、合盒销（套）插入式射嘴以及射砂板锁紧销等几种附件的传统结构型式或冷芯盒说明书推介的型式（及其安装结构）存在的不足；针对这些冷芯盒附件的不足，注重提出了应用人体工效学、生活美学及绩效理论等对其结构进行通用性强的优化设计（方法）或评述了其优先选用的结构型式。     

细长及微小砂芯冷芯盒的优化设计

简单介绍了航空镁铝铸件上常用的直浇道芯、细长实体芯、细长中空芯及微小砂芯的结构特点。重点阐述了直浇道芯的几种冷芯盒方案各自的特点，并对其进行了比较分析，提出了其优（化）选设计方案。简单评述了其它几类砂芯之适用的冷芯盒制芯工艺方案。     

垂直分盒热芯盒的优化设计

简单评述了垂直分盒热芯盒设计中目前尚存在的一些不足之外，较细地阐述了分盒面、射砂方向、射砂口面积、顶芯机构、取芯机构及分盒负数，凸台尺寸放大制作等的优化设计技巧和优选方案。     

水平分盒热芯盒的优化设计

评述了水平分盒热芯盒设计目前尚存在的一些不足之处，较详细地阐述了分盒面、砂芯排布、下顶芯杆及其它安装结构，底框、下顶芯板、水冷射板、盒体组合件（图）等的优化设计技巧和优选方案。     

制芯中心冷芯盒模具几种附件结构的优化

介绍了SLC2-60+60L双射头制芯中心制芯特点,根据Loramendi公司提供的工装模具设计要求以及以往冷芯盒模具设计时积累的经验,对Loramendi制芯中心冷芯盒模具的射砂板、上顶芯-压平-吹气固化系统、芯盒底框窥视窗护板、模具下顶芯杆、模具起吊吊环等结构进行了优化设计,使模具结构简单,模具检修、安装方便,满足Loramendi制芯中心模具要求,降低了生产成本,保证了模具高效、稳定的运行。在缸盖砂芯制芯过程中,提高了制芯质量,获得了良好的经济效益。     

国内外冷芯盒法用气体发生器

本文针对目前国内外冷芯盒法所使用的气体发生器的特点进行了分类、评述.并指出了适用条件及使用时的注意事项.     

冷芯盒法研究与应用现状

本文评述了各种冷芯盒工艺的研究及应用现状,包括钠水玻璃/CO_2法、酚尿烷/胺法、呋喃树脂/SO_2法、环氧树脂/SO_2法、酚醛树脂/SO_2法、自由基法、酚醛树脂/酯法及有机粘结剂/CO_2法,指出了各种冷芯盒工艺的优点及存在的问题。并比较了粘结剂及硬化剂的性能。     

多种冷芯盒工艺法的综合分析

本文介绍了以三乙胺法为主的几种冷芯盒工艺，指明芯砂原砂化学成分、水分、砂温、混芯砂机选型为生产要点。继而综述常用SO2法、FRC游离基SO2法、β法及流行三乙胺法在抗拉、抗弯、抗湿强度，混芯总砂有效作用时间，芯盒、型板清洁要求方面，四种不同冷芯盒法优劣对比，及其生产普及采用程度。关于流行三乙腰法抗湿性差及砂芯过早分解溃散两大难题，前者经反复试验，选用抗湿性较佳的903酚醛树脂可解除苦恼；后者采用高热强度三乙胺冷芯盒法，其热变形曲线显示可较流行三已胺法延时110多秒才分解溃散。     

ZH860射芯机热(冷)芯盒附件结构的优化设计

简单介绍或评述了ZH860射芯机热(冷)芯盒的模底框、射砂板(及上顶芯板)导向销、下顶芯板- 垫板导柱、下顶芯杆及其压板、合盒销及套等几种附件的传统结构形式,或设备使用说明书推介的型式(及其安装结构)存在的不足;针对这些附件的不足,提出了应用人体工效学、生活美学、绩效理论等对其进行优化设计的方法,或评述了其优先选用的结构型式。     

精密冷滚轧机床本体结构优化设计

建立合理分析模型,改进优化算法,对冷滚轧机机架进行结构优化设计,使机架在满足刚度条件下材料合理分配,重量最轻。     

自动冷镦机离合器制动器结构优化设计

介绍改进冷镦机离合器制动器的安装位置和密封。     

DRC2000热模锻压力机优化设计

DRC2000热模锻压力机是在引进世界先进生产技术基础上,经过不断改进、完善,充分吸收MP、SP热模锻压力机的优点而设计的,具有重量轻、刚性好、传动平稳、结构可靠、导向精度高、维修操作方便等特点,用于进行成批大量的黑色和有色金属的模锻和精整锻件,锻件精度高,材料利用率高,生产率高,易实现自动化,同时对工人的操作技术要求低,噪声和振动小,是现代锻造生产不可缺少的高精锻设备。     

轴类零件冷锻成形的预成形工步设计及优化

以大高径比轴对称锻件的预成形设计为例,以预锻工步多目标的优化设计为目的,提出一种预成形新方法.从给定的最终成形件形状出发,基于Deform-3D软件进行数值模拟,采用正向设计,初步计算各预成形工步的几何参数,充分考虑了模腔的充填、降低终锻力、提高变形均匀性及减小材料最大损伤值等方面因素后,从终锻工步出发,逆向调试并优化各预成形工步的参数,并将模拟结果与实验结果作比较.实验结果表明,逆向技术在多工步锻造的预成形工步设计上具有指导意义.     

Process design and control in cold rotary forging of non-rotary gear parts

This paper is aimed to investigate the process design and control method in cold rotary forging of parts with non-rotary upper and lower profiles. Using the analytical and FE simulation methods, three critical technological problems in the cold rotary forging process of this kind of parts are resolved reasonably. The first one is that an accurate design method of the non-rotary upper die is presented based on the geometrical and kinematic relationship between the upper die and upper profile of parts. The second one is that the interference judgment between the upper die and upper profile of parts can be achieved by analytically obtaining the trajectory of any point in the upper die. The third one is that the metal flow and geometrical accuracy of the non-rotary upper profile of parts can be effectively controlled through optimizing the process parameters. On the basis of the above research, the cold rotary forging process of a typical gear part, both the upper and lower profiles of which are non-rotary, is investigated numerically and experimentally. The results indicate that the desirable geometrical accuracy of the non-rotary upper profile of the gear part can be obtained, which verifies that the process design and control method presented in this paper is valid and cold rotary forging can thus be used to manufacture the parts with non-rotary upper and lower profiles.     

覆盖件拉深模标准件智能装配与逆向辅助设计

通过对覆盖件拉深模辅助零件进行分类,提出相应的特征分析与装配定位方法,结合CAA开发工具在CATIA平台实现标准件在拉深模中的智能装配。对定制类标准件在模具上的安装避空位与座台结构自动化设计技术进行了研究,在覆盖件拉深模CAD中,建立辅助标准件库,直接调用所需的标准件,可以有效地提高设计效率,取得了较好的效果。     

Die design and experiments for shaped extrusion under cold and hot condition

The paper presents designing, fabrication and experiments for shaped extrusion of aluminum alloy (Al 2024) and lead alloy (70Pb30Sn). Flat and conical dies of H, T, L, elliptical and two-hole sections have been designed on the basis of upper bound technique by the authors for cold and hot extrusion. Hot extrusion has been performed in the temperature range 300–500 °C. Experimental investigation have been conducted for average extrusion pressure in cold case for lead alloy (70Pb30Sn) billets and in hot case for commercial grade aluminum (Al 2024) billets respectively. Extrusion pressure in the both cases has been compared with the theoretical work by the author for cold extrusion and for hot extrusion of aluminum alloy, result have been compared with a finite element based commercial package HyperXtrude. Theoretical results obtained by the upper bound technique and the HyperXtrude compares well with the experiments.     

Optimal die profile design for uniform microstructure in hot extruded product

The objective of this study is to design the optimal die profile that can yield more uniform microstructure of a hot extruded product. The microstructure evolution, such as dynamic and static recrystallization, and grain growth, is investigated by using the program combined with Yada and Senuma's empirical equations and rigid-thermoviscoplastic FEM. The die profile of hot extrusion is represented by a Bezier–curve to generate all the possible die profiles for a given extrusion ratio and initial radius of the billet. In order to obtain the optimal die profile which contributes to uniform microstructure of the product, the FPS (Flexible Polyhedron Search) method is applied to this study. To show the validity and effectiveness of the result of this study, an experiment of hot extrusion is performed, and the result of simulation is in good agreement with that of the experiment.     

内转子的冷挤压成形工艺及模具设计

介绍了内转子零件的冷挤压成形工艺及其模具设计。     

基于Web的汽车模具设计中标准件库的研究与开发

介绍了汽车模具设计中存在的问题，并提出了解决方案，然后对基于Web的标准件库的开发与使用进行了研究。