论文部分内容阅读
1 前言钢铁件在冷加工前进行磷化处理,形成润滑层,可避免冷加工出现表面应力和表面破裂,从而延长模具的使用寿命。目前,国内采用的锌系冷加工磷化液能耗大(处理温度为70～80℃),工效低,磷化后的冷加工只能进行一道冷拔,冷加工的收缩比为15％左右,槽液更换频繁。为了改变这种状况,研制了适用于冷加工的磷化工艺,其特点是磷化速度快,膜均匀,厚度适中。实用证明,用此磷化液磷化后,工件冷加工可连续进行二道,收缩比可达30％以上。2 工艺配方及主成分的作用
1 Introduction Iron and steel parts before phosphating cold processing, the formation of lubrication layer, cold work to avoid surface stress and surface rupture, thereby extending the service life of the mold. At present, the zinc phosphating solution used in China is characterized by large energy consumption (processing temperature is 70-80 ℃), low work efficiency and cold working after phosphating. The shrinkage ratio of cold working is only about 15% Frequent replacement. In order to change this situation, developed for the phosphating process cold processing, which is characterized by fast phosphating, uniform film, the thickness of moderate. Practical proof, with phosphating phosphating solution, the workpiece can be continuously cold processed two, the shrinkage ratio of up to 30%. 2 process formula and the role of the main component