回流焊炉温曲线计算cpk回流焊炉温曲线计算CPK(Concentration Process Index)的步骤如下:确定关键过程参数(CPPs):回流焊炉温曲线中,关键过程参数包括炉子温度、保温时间、空气流量等。收集数据:收集回流焊炉温曲线的实际数据,包括实际温度、时间等。绘制温度曲线:将实际数据绘制成回流焊炉温曲线,并确定关键过程参数的控制限。计算CPK:根据实际数据和控制限,计算每个关键过程
BGA 焊点检测与失效分析技术吕淑珍【摘 要】The BGA Solder joint quality is difficult to detect,in order to collect all of the available data,a analysis process should be followed. X - ray can detect the defects such as s