近终型金属铸造模具制造工艺设计分析与应用

近终型制模技术，可以缩短制模周期、降低生产成本。本文介绍近终型技术在制模工艺实际中的应用概况。并举出实例，指出近终型制模技术可以提高生产效率，快捷地制造出各种复杂的零件/金属模具，该技术有着广阔的应用前景。     

Kynar—500涂装工艺与涂层性能研究

介绍了Kynar－500涂料的涂装工艺，并对涂层的性能作了试验与分析。     

混合指示剂单相滴定法测定烷基磷酸酯钾盐

本研究用混合指示剂单相滴定法测定ISO标准方法所不能测定的磷酸盐阴离子表面活性剂的浓度.测定PK、E502A、昆山PK的常数K分别为355.lg/M、420.7g/M和344.0g/M,变异系数分别为1.45%、0.59%和1.26%,测定实际试样的加标回收率为98.2～103.9%.方法准确、简单、快速,不需用毒性较大的有机溶剂,本法适用于化纤油剂和涤纶短纤维上油率等的测定.     

Quality improvement of ball-end milled sculptured surfaces by ball burnishing

In this paper, the use of the ball burnishing process to improve the final quality of form tools (moulds and dies) is studied. This process changes the roughness of the previously ball-end milled surfaces, achieving the finishing requirements for plastic injection moulds and stamping dies. Ball burnishing can be easily applied in the same machining centres as those used for milling. In this way, both lead times and production costs can be dramatically reduced.

Both the burnishing system and its main parameters are taken into account, considering their influence on finishing. Workpiece surface integrity is ensured due to the surface smoothing effect of process and the associated cold working. Examples of different materials, machined surfaces, and industrial applications are explained, with respect to the maximum and mean surface roughness achieved.

The main conclusion is that using a large radial depth of cut in the previous ball-end milling operation, together with a small radial depth during burnishing can produce acceptable final roughness. Savings of production times are high, as burnishing is applied using the maximum linear feed of the machine, while milling must be made at moderate feeds. Moreover, ball burnishing NC programming is less critical and needs less care in its definition than CAM for milling.     

有机硅织物整理剂的选择与应用（二）

有机硅织物整理剂的选择与应用（二）黄德华张先亮（杭州树脂厂研究所３１００１１）（武汉大学化学系４３００７２）（上接１９９５年第５期第１４页）２．３涤纶缝纫线的整理剂国外，涤纶高速整理剂由双醚［ＲＯ－（Ｃ＿３Ｈ＿６Ｏ）＿ｍ（Ｃ＿２Ｈ＿４Ｏ）＿ｎ］＿２Ｃ...     

3 500 mm精轧机中间轴的修复及改造

本文简述了3 500 mm四辊精轧机主传动装置的结构,重点介绍了中间轴断裂后的修复及改造方案,接轴平衡轴承由胶木瓦改为滚动剖分轴承后,取得了良好效果.     

电化学机械光整加工表面形貌研究

提出了用于圆柱表面精密光整的夹心式电化学机械加工装置核心部件设计方案,探讨了主要工艺参数对表面质量影响规律。对采用这种新型加工方法所产生表面的轮廓高度特性、间距特性、形状特性、轮廓峰分布及表面波纹度进行了试验研究,结果表明电化学机械光整表面轮廓以高频小振幅波度为主要成分。     

成型阴极脉冲电化学光整加工在轧辊上的应用

采用成型阴极对冷轧丝杠轧辊进行脉冲电化学光整加工.文章介绍了该方法的基本原理,给出了实验装置,在一定的工艺条件下,对轧辊进行了脉冲电化学光整加工.结果表明,该方法能将轧辊表面粗糙度从0.3μm减小至0.06μm.     

军用涤纶长丝面料热转移印花及功能整理研究

介绍涤纶长丝面料分散染料热转移印花工艺,包括工艺流程、主要技术创新、产品应用等方面。阐述涤纶长丝面料阻燃涂层整理技术,并讨论阻燃剂用量、涂层增重量对整理效果的影响。总结防热红外侦察整理、防雷达波侦察整理、多功能迷彩面料生产及要点。文章表明,化纤长丝纺织产品的发展与国防建设是密切相关、相互促进、相辅相成的。以化纤长丝为基材生产的系列化军用产品是建设强大国防的重要保障。不断深化化纤长丝面料的功能性深度加工具有非常重要的意义。     

仿牛仔真丝绸涂料染整一步法探讨

仿牛仔真丝绸生产中可采用涂料染色、树脂整理一步法工艺，它可以提高产品的折皱回弹性，节约涂料用量。