论文部分内容阅读
酸性光亮锡铈铋电镀工艺由机电部十四所工艺部研制成功,经两年多的实践,证明工艺稳定、操作方便。经测试,各项性能指标超过国内外现有锡铅、光亮锡铈、光亮镀锡等镀层的指标,超过了国家一级品的规定。该工艺采用的镀液价格低,镀层不需热熔工艺,但表面却光亮美观、平整、可焊性好,抗氧化、抗腐蚀性好,适合双面孔化印制板、微波印制板的接地层的批量生产。对表面安装印制板更
Acid bright tin-cerium bismuth plating process electromechanical department fourteen by the Ministry of Technology successfully developed, after more than two years of practice, that the process is stable and easy to operate. After testing, the performance indicators than the existing domestic and international existing tin and lead, bright tin cerium, bright tin plating and other indicators, exceeding the national first-class product requirements. The process used in the low price of the bath, the coating does not require hot-melt process, but the surface is bright and beautiful, smooth, good solderability, anti-oxidation, good corrosion resistance for double-sided perforated PCB, microwave PCB Mass production of ground planes. Surface mount PCB more