Effect of Electrospark Alloying Process on Microstructure and Properties of the coating

Using electrospark alloying machine, a series of experiments were carried out to investigate the effect of electrospark surface strengthening process on the microstructure and the properties of the coatings with ultrafine cemented carbide as electrode material and white cast iron as substrate material. The results indicated that the optimum process parameters to be used reached a satisfying coating surface. Wear test results showed the coatings had a high wear-resistance.     

镁合金加工技术的现状与发展

主要叙述了镁合金加工技术的现状与最新进展，分析了镁合金压铸成形、半固态铸造、锻造等工艺的变形特点及关键技术，并对镁合金加工技术的发展趋势进行了展望。     

粘胶纤维切断刀的腐蚀磨损与寿命

本文分析了粘胶纤维切断刀的腐蚀磨损形貌,并将几种钢经不同表面处理后进行试验。结果表明:镀覆 TiN 的 Cr15Ni18Mo2Cu3或1Cr18Ni12Mo2Ti 不锈钢切断刀能显著提高其寿命。     

超高频电容式型砂水分传感器的研制

介绍了自行研制的超高频电容式水分传感器的设计和工作原理.通过试验,研究了传感器的测量误差.结果表明,新研制的传感器可较好地适用于型砂水分的在线测量.     

国内织针热处理工艺的现状及对策

介绍了当前国内织针热处理工艺中淬火和回火加工所用的设备、工艺及存在的问题,提出了解决方法和对策.     

电火花表面强化技术的研究进展

介绍了电火花表面强化的原理与特点,概述了与电火花表面强化技术的研究现状,指出了电火茶表面强化技术的发展趋势。     

Rapid Tooling Technique Based on Stereolithograph Prototype

Rapid tooling technique based on the sterelithograph prototype is investigated. The epoxy tooling technological process was elucidated. It is analyzed in detail that the epoxy resin formula is easy to cast, curing process, and release agents. The transitional plaster model is also proposed. The mold to encrust mutual-inductors with epoxy and mold to inject plastic soapboxes was made with the technique. The tooling needs very little time and cost, for the process is only to achieve the nice replica of the prototype. It is benefit for the trial and small batch of production.