By selecting suitable acidity of preplating bath, the coating quality can also be I...
选择适宜的预镀液的酸度也可以提高镀层质量。
2
The invention comprises the following procedures: preplating, etching, chromium plating, washing, removal of hydrogen, hole loosing, washing and drying.
本发明包括镀前工序、刻蚀工序、镀铬工序、水洗工序、除氢工序、松孔工序、水洗烘干工序。
3
The effects of the composition and technological conditions of electroless tin preplating bath on the thickness and morphology of the coatings are investigated.