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磷化膜广泛用于金属材料(铁、铝、镁)的涂漆底层,它具有提高涂料吸附力及抗蚀性的功能,用于机械加工及冷挤压加工中,却显示出特殊的功能. 我厂在汽车空压机的连杆加工过程中,原存在“八字”孔浇铸锡合金后需对非加工表面进行打磨,以清除粘附的锡合金和提高外观质量,后来,利用磷化膜对熔融金属无附着力这一特性,将车“八字孔”→浇铸锡合→打磨修整的加工工序改为:磷化→车“八字孔”→浇铸锡合金,增加了一道磷化工艺,减少了一道打磨工序,改进后提高了加工质量,不用劳动强度较大的手工打磨,产品整洁美观.从“解放牌”至“东风140”均采
Phosphating film is widely used in the coating of metal materials (iron, aluminum, magnesium), it has the function of improving the adsorption and corrosion resistance of coatings. It is used in mechanical processing and cold extrusion processing, but it shows special functions I plant in the automotive air compressor connecting rod processing, the original existence of “character” hole cast tin alloy after grinding the surface to be non-processed to remove the adhesion of tin alloy and improve the appearance of quality, and later, the use of Phosphating film no adhesion to the molten metal of this feature, the car “character hole ” → cast tin joint → grinding dressing process to: phosphating → car “character hole ” → cast tin alloy, increase A phosphating process, reducing a grinding process, improve the quality of the processing, without labor-intensive hand-polished, clean and beautiful products from the “liberation card ” to “Dongfeng 140 ” are mining