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一、国内活塞肖生产工艺的现状 过去国内活塞肖的主要生产方式,大都采用实心棒料车削和钻孔,或用厚壁无缝钢管加工,材料利用率很低,前者约为40％,后者约为60％,大量原材料变为废屑浪费了。六十年代末期,国内低碳钢冷挤压技术发展,作为少无切削工艺在活塞肖生产中得到推广和应用,使工艺发生了重大变革,材料利用率显著提高。但鉴于活塞肖冷挤压工艺也存在一些缺陷,例如:从原材料开始到挤压成型,过程复杂;生产不连续,转序运输频繁;由于挤压力大,必须要有专门的冷挤压机和一整套热处理和化学表面处理设备等。因此近几年来,我们对活塞肖温挤压工艺进行了研究。
First, the domestic production process of Shaw Shaw Shaw past the main production methods Shaw Shaw, most of the use of solid bar turning and drilling, or thick-walled seamless steel pipe processing, material utilization is very low, the former is about 40%, after About 60%, a large number of raw materials into wasted waste. In the late 1960s, the development of domestic low carbon steel cold extrusion technology was promoted and applied as a non-cutting process in the production of piston Shaw, resulting in significant changes in the process and material utilization rate significantly increased. However, in view of the piston cold extrusion process there are also some shortcomings, for example: starting from raw materials to extrusion, the process is complex; production is not continuous, frequent transport sequence; due to the extrusion pressure, you must have a special cold extrusion machine And a complete set of heat treatment and chemical surface treatment equipment. Therefore, in recent years, we have studied the piston compression process.