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模具型腔的光整加工一直是模具加工中的难题。常采用手工方法,加工效率极低。若采用电化学抛光的方法,能有效地解决。抛光效率比手工方法提高数十倍。用电化学抛光金属零件虽早被应用,但抛光模具型腔尚未见到采用。我们对CrWMn,3Cr2W8V和Cr12等三种材料的模具进行了抛光试验。实验结果表明,采用电化学抛光可使模具型腔的粗糙度在原来的Ra3.2～1.6μm基础上降低到Ra0.4～2.2gμm,抛光时间仅5～14分钟,是一种比较理想的抛光方法。
Mold cavity finishing has been the mold processing problems. Often used manual methods, processing efficiency is very low. If using electrochemical polishing method, can effectively solve. Polishing efficiency than the manual method to improve several times. Electrochemical polishing of metal parts has long been used, but not yet used to polish the mold cavity. We polished the molds for three materials, CrWMn, 3Cr2W8V and Cr12. The experimental results show that using electrochemical polishing can reduce the roughness of the cavity of the mold to Ra0.4 ~ 2.2gμm on the basis of Ra3.2 ~ 1.6μm and polishing time of only 5 ~ 14 minutes, which is an ideal method Polishing method.