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节约能源是当前机械行业迫切需要解决的一个问题,而热处理又是零件生产过程中消耗大量能源的工艺环节。从国内活塞销生产来看,活塞销热处理消耗的能源约占其整个能源消耗的80％左右。因此在保证产品质量的前提下,简化热处理工艺,推广和应用节能高效的新材料、新工艺是十分必要的。 一、冷挤压活塞销坯料 退火工艺 冷挤压活塞销成形工艺在国内已得到广泛的应用。现用活塞销材料大多采用15Cr、20Cr冷拉圆钢,由于在轧制过程中的冷加工硬化原因,坯料原始硬度实测可达HRB93-95(HB200左右),不能直接进行冷
Energy conservation is an urgent problem to be solved in the current machinery industry, and heat treatment is a process that consumes a large amount of energy during the production of parts. From the domestic production of piston pin point of view, piston pin heat treatment of energy consumption accounts for about 80% of its total energy consumption. Therefore, under the premise of ensuring the quality of products, it is necessary to simplify the heat treatment process, popularize and apply new energy-saving and new materials and technologies. First, the cold extrusion piston pin blank annealing process Cold extrusion piston pin forming process has been widely used in China. Most of the current piston pin materials used 15Cr, 20Cr cold-drawn round bar, due to cold work hardening in the rolling process, the original hardness measured up to HRB93-95 (HB200 or so), can not be directly cold