I-4 new surface treatment process is studied by chemicalconversioncoating technology.
采用化学转化膜技术，研制出I - 4表面处理新工艺。
2
HY-200 process procedure for colour chemicalconversioncoating of al and its alloys parts and the test method for quality control are introduced in this paper.
本文介绍了对铝及铝合金零件进行彩色化学转化处理的HY—200法的工艺及质量控制的试验方法。
3
Influences of factors such as pretreatment, chemicalconversion film on the quality of coating are analyzed.