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Research of Evaluation on Printability of Solder Paste
Author(s): 
Pages: 67-70
Year: Issue:  2
Journal: ELECTRONICS PROCESS TECHNOLOGY

Keyword:  焊膏SMT可印刷性;
Abstract: 焊膏的印刷性能是SMT中最致SMA的各种缺陷.介绍一种焊膏的印刷性能测试方法,其特点是采用了"刀-环"印刷结构,其中模板设计成环形来实现连续的印刷.此外在环形模板内焊膏滚动的切线方向上安装J形探针,监测焊膏的滚动印刷阻力.通过对几种焊膏的滚动印刷试验,并对可印刷性能进行了评价分析,力求获得一个简单的评价焊膏可印刷性能的指标.焊膏印刷阻力呈下降趋势,在滚动停止时跌倒到最小值.以最终的印刷距离作为焊膏的印刷寿命或者耐受值,由此来有效评估焊膏可印刷性.
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