Study on the Rough Surface of KFC Copper Strip

Huang Guojie Xie Shuisheng Fang Naiyun Cheng Zhengkang

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Study on the Rough Surface of KFC Copper Strip
Issue S1, Pages: 146-147(2007)
Published：2007
DOI：
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[1]黄国杰,谢水生,方奶云,程镇康.KFC铜合金带材表面粗糙缺陷的研究[J].特种铸造及有色合金,2007(S1):146-147. DOI：

Huang Guojie Xie Shuisheng Fang Naiyun Cheng Zhengkang. Study on the Rough Surface of KFC Copper Strip[J]. Special Casting & Nonferrous Alloys, 2007, (S1): 146-147. DOI：

摘要

对KFC引线框架铜合金带材生产中

易出现的表面粗糙缺陷进行了分析和研究。分析采用能谱分析

SEM

金相分析等手段。对粗糙缺陷试样表面分析表明

试样的成分没有异常。进一步对缺陷试样的微观组织进行观察

发现缺陷试样:在抛光前

有较密集、且规则的微小轧痕;在抛光后

观察有较粗大的晶粒存在。对试样进行加热至700℃以上

缺陷消失。研究结果表明

现行的退火工艺中存在不合理的地方

导致晶粒大小不均

存在粗大晶粒。因此

需要进一步优化工艺参数

如提高退火的温度或延长退火的退火时间。

Abstract

The rough surface of KFC copper strip applied to lead frame was studied and analyzed.The method of energy spectrum analysis

SEM and metallographic analysis has been adopted to study and analyze.To compare the component of the rough surface of KFC copper strip with one of the normal copper strip

the component abnormity is not found.But to observe its microstructure of the rough surface

there are thinner and regular dimpling in the surface before the polishing and bigger crystal grains will be found after the polishing.The coarse structure vanished when the sample is heated higher than 700℃.It is shown that current annealing technique is not reasonable and should be improved and optimized.Such as enhance the annealing temperature or extend the annealing time.