汽车顶盖天窗侧整形模设计

通过对汽车顶盖零件特点分析,介绍了顶盖的冲压工艺,设计了顶盖天窗侧整形模。根据生产需要,在第四工序的天窗翻边部位设计三组侧整形斜楔,侧整形凸模、凹模均要设在下模,模具可以成形出有天窗和无天窗的汽车顶盖这两种制件。重点介绍了顶盖天窗侧整形模中的两种双动斜楔结构的应用,在顶盖天窗左边位置采用两组对向的电车斜楔,布置在下模中部区域附近,由两个驱动块分开驱动,模具调整方便,结构稳定性好;在天窗前后侧位置采用复动斜楔,模具结构紧凑,节省了模具空间。通过本模具中对双动斜楔的灵活运用表明,模具结构稳定可靠,方便了制造与调试,节约了成本,保证了产品质量,提高了生产效率。     

全景天窗顶盖侧整形模设计

以某车型全景天窗顶盖为例,通过对零件结构进行分析,介绍了全景天窗顶盖冲压工艺,设计了用于成形全景天窗口部特征的侧整形模,并阐述了2种双动斜楔机构在全景天窗顶盖侧整形模中的应用。实际应用表明,凹模扩张斜楔机构与凹模收缩斜楔机构的联合使用,使模具机构更加紧凑和稳定,实现了全景天窗口部沿周负角法兰的同步成形,减少了成形工序,降低了零件制造成本。     

汽车顶盖天窗模具调试方法及新工艺的应用

结合实际应用介绍了汽车顶盖天窗模具成形的调试方法及新工艺的应用,以旧工艺方法与优化后的工艺方法分析讨论,有效的改善了汽车顶盖天窗制件在拉伸成形过程中的一些问题。     

汽车顶盖天窗成形快换模设计

通过对汽车顶盖零件特点分析,设计了顶盖天窗成形快换模,根据生产需要,模具可成形有天窗的汽车顶盖和无天窗的汽车顶盖2种制件,着重介绍了模具快换结构的工作过程与设计制造要点。该快换结构功能可靠,降低了模具制造成本,可为类似零件的模具设计提供参考。     

带气动切换机构的汽车顶盖翻边整形模设计

通过对汽车覆盖件的冲压工艺方案分析,介绍了一种带气动切换机构的汽车顶盖外板的冲压工艺方案,以及汽车顶盖的翻边整形模结构设计;实现了有天窗型顶盖和无天窗型顶盖外板的翻边整形工艺可以在同一副模具上进行生产的目的;重点讲述了顶盖翻边整形模结构、切换机构及工作原理。实际生产表明,该结构可降低模具开发成本,缩短模具切换时间,提高生产效率。     

汽车顶盖天窗侧翻边模设计

对天窗顶盖成形工艺进行分析,通过调整双动斜楔结构在一道工序内同时完成顶盖天窗4条边的侧翻边,减少模具数量,节省了模具制造成本,提高了生产效率。     

天窗版与非天窗顶盖共用模具设计

基于模具的特性,提出了多种相同功能产品共模生产的方法。通过分析天窗版顶盖与非天窗顶盖产品的成形特点,阐述了OP20修边、冲孔和OP40翻边、整型、冲孔的模具结构以及其工作过程。采取增加集成电气化的技术措施,减少冲压工艺,实现共模生产,使产品的一致性更加稳定。降低了模具成本,提高了生产效率。     

汽车全景天窗顶盖切翻工艺与模具设计

分析了汽车全景天窗顶盖结构特点,针对天窗顶盖尾部的刚性要求及搭接处多的特点,设计冲压工序及模具结构,将侧翻边、切边、上翻边等工序整合在一道工序中完成,冲压成形工序由5道减少至4个,模具数量减少1副,缩短生产周期,提高生产效率,节约生产成本。     

某车型天窗加强环回弹优化方法

某高强钢天窗加强环外形尺寸大，内部中空，因受顶盖外板造型限制呈弧面形结构，成形过程中易出现回弹现象，介绍了其回弹解决方案，运用CAE分析、回弹补偿、模具优化等方法整改拉深模，提升了天窗加强环的合格率和尺寸精度。     

轿车顶盖模具天窗的冲翻方式

介绍了带下压料的天窗冲翻结构在轿车顶盖天窗中的应用。通过对顶盖的冲压工艺以及对顶盖模具的结构的分析,在无顶盖天窗模具后增加一副带下压料冲翻结构的模具,实现轿车顶盖有天窗和无天窗两种状态。与传统的顶盖生产模具相比,该结构不仅能够降低模具设计开发成本,也能够节省冲压车间的占用面积,还可以提高模具的生产效率;与带有切换机构的顶盖生产模具相比,该结构能在一定程度上改善制件缺陷,提高带天窗制件的匹配度,增加客户满意度。     

模具渗硼工艺及其发展应用

渗硼是提高模具使用寿命的重要途径，是在金属表面形成高硬度的金属硼化层，显著提高其耐磨性，且具有良好的耐热性和耐蚀性。近年来，随着渗硼工艺逐步改进和完善，已发展了复合渗、多元共渗及低温渗硼工艺，取得了良好的经济效果。     

Stainless and acid-resisting steels and alloys

Conclusions Highly alloyed steels and alloys are produced in conformity with GOST or technical specifications in thick and thin sheets, beams and channels, bars, hot-rolled and cold-rolled pipe, and rod. Castings are produced in the specialized plant of the Ministry of Chemical and Petroleum Machine Building.The technology of welding stainless steels and alloys is given in [15] and [16].TsNIIChERMET. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 10, pp. 43–50, October, 1967.     

Nanochemistry and supramolecular chemistry of actinides and lanthanides: Problems and prospects

The possibility of using unique properties of lanthanides in the nanotechnology is demonstrated. The origination of linear and nonlinear optical properties of lanthanide compounds with phthalocyanines, porphyrins, naphthalocyanines, and their analogs in solutions and condensed state and the prospects of obtaining novel materials on their basis are discussed. Based on the electronic structure and properties of lanthanides and their compounds, namely, optical and magnetic characteristics, electronic and ionic conductivity, and fluctuating valence, molecular engines are classified. High-speed storage engines or memory storage engines; photoconversion molecular engines based on Ln(II) and Ln(III); electrochemical molecular engines involving silicate and phosphate glasses; molecular engines whose operation is based on insulatorsemiconductor, semiconductor-metal, and metal-superconductor types of conductivity phase transitions; solid electrolyte molecular engines; and miniaturized molecular engines for medical analysis are distinguished. It is shown that thermodynamically stable nanoparticles of Ln _x M _y composition can be formed by d elements of the second halves of the series, i.e., those arranged after M = Mn, Tc, and Re. Prospects of using lanthanide superconductors in nanotechnology are considered.     

ADI和CADI在冶金矿山等行业中的应用及前景

综述了ADI和CADI的耐磨性能及耐磨原理;详细介绍了ADI磨球、衬板和锤头的应用情况,认为ADI件无论在综合力学性能,还是在耐磨性、使用寿命、成本方面都优于高铬铸铁件;同时还介绍了CADI在农业机械领域的应用效果.根据我国钢铁行业的发展趋势,指出ADI和CADI耐磨件市场前景广阔.     

金刚石、CBN有序排列及择优取向工具的研发及应用

有序排列／择优取向超硬材料工具的技术创新，将广泛适用于电镀、树脂、陶瓷、金属结合剂制品工具中，使用超硬材料颗粒在结合剂中均匀排列并择优定向，以最大潜能的发挥超硬材料各个方面固有的特性。并针对不同的加工对象，有选择性的使用超硬材料各自不同的特性，从而使超硬材料工具将以经济、高质与高效的优势替代传统的超硬材料工具并将进入新兴的加工领域，为生产企业带来新的发展机遇。本文将对有序排列与择优取向技术的研究现状及其在不同的金刚石工具中的应用做一阐述。     

Hardness and elastic modulus of amorphous and nanocrystalline SiC and Si films

Hydrogen-free amorphous and nanocrystalline films were prepared by magnetron sputtering of the SiC or Si targets. Mechanical properties (hardness, elastic modulus, intrinsic stress) and film structures were investigated in dependence on the substrate bias and temperature. It was found that both hardness and elastic modulus of all amorphous a-SiC films prepared at different substrate temperatures and biases are always lower than those for bulk α-SiC single crystal while the hardness of partially crystalline SiC films is higher and the elastic modulus lower than those for α-SiC one. In contrast, both hardness and elastic modulus of all amorphous Si films are always lower than those for nanocrystalline Si films which show approximately the same value as the Si single crystal.