论文部分内容阅读
目前电器产品绝缘介质已由油转向六氟化硫或真空方面,中高压电器产品上大量采用铝合金件,相应对铝合金件的技术要求,如致密性、表面导电性、高强度、高耐蚀性等有着不同程度的要求。对于理想的铝合金件不仅要有好的型材,还必须符合成型、热处理、表面处理等工艺的特定要求。多年来由于铝合金件浇涛成型工艺中存在一定的问题,铸件经切削加工后表面存在缩孔、苍蝇脚等缺陷,工件经酸洗、阳极氧化或电镀等表面处理后常常发生气泡、脱皮、泛色等现象,影响铝合金制件产品质量。要使铝合金件经表面处理后能符合使用要求,就必须对涉及表面处理的各道工序的完整技术进行提高与完善。1.选材铸件经表面处理后易发生的脱皮,起泡和泛色现象主要由铸件的材质差和铸造工艺差所造成。
At present, the insulating medium for electrical products has been turned from oil to sulfur hexafluoride or vacuum. A large number of aluminum alloy parts are used in medium and high voltage electrical appliances. Corresponding technical requirements for aluminum alloy parts such as compactness, surface conductivity, high strength and high resistance Erosion and so have different levels of requirements. For the ideal aluminum alloy parts not only have good profiles, but also must meet the molding, heat treatment, surface treatment and other special requirements of the process. Over the years due to aluminum alloy pouring Tao molding process there are some problems, the surface after casting casting shrinkage, flies feet and other defects, the workpiece by pickling, anodizing or plating surface treatment often occurs after the bubble, peeling, Pan-color and other phenomena, affecting the quality of aluminum products. To make the aluminum alloy after surface treatment to meet the requirements, it must be on the surface treatment of the various processes of the complete technology to improve and perfect. 1. Selection Castings surface treatment prone to peeling, blistering and pan-color phenomenon is mainly caused by the poor casting materials and poor casting process.