Kevin,



Pls also consider whether there is some contaminant to dissolve from board

into the flux tank.  For example, silicon-containing compounds may inhibit

the foaming properties of the flux



Jackson Chan

Techncial Services Manager



Cookson Electronics - Alpha Metals

(Low cost, high reliability alloy - SACX0807)





                                                                           

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All,



我们公司最近波烽焊工序出了点问题，就是松香不能正常发泡，表现为松香在刚开始

使用的时候发泡很正常，但用了一两个小时之后发泡就不均匀、发泡很大.异致PCB板

经过预热后松香不能很好的挥发,残余松香附在触点上，后工序出现高不良．



请问如何解决此问题？如果分析松香是否有问题，可以从哪些方面入手？



Best regards,

Kevin Liang 梁益健

QA Supervisor

Tyco Electronics

Dongguan       Transpower       Electronic       Products      Co.      Ltd

Jinxin       Industrial       Area,       Jinmei,       Changping      Town

Dongguan,                         Guangdong,                         China.

Postal                             Code:                             523579

86                   769                  83335747-343                  Tel

86                    769                    83335746                   Fax

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