糖分对温控器用无铅助焊剂的影响分析

Analysis on sugar content affecting lead-free soldering flux used for thermostat

通过分析波纹管助焊剂主原料甘油的含糖量,考察了糖分含量对助焊剂颜色变化和波纹管焊接不良率的影响.试验结果表明,甘油中糖分含量较高是造成助焊剂颜色变深和焊接性能变差的主要原因,助焊剂中蔗糖质量分数最高不能超过0.16%,葡萄糖质量分数最高不能超过0.96%.

In this paper,the sugar content of glycerol,which was the main raw material of corrugated pipe flux,was analyzed and soldering testing of flux were done.It was indicated that the high sugar content of glycerol was the main reason for color darken and poor weldability of flux.The mass fraction of sucrose in flux should be no more than 0.16%,and the mass fraction of glucose should be no more than 0.96%.