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双面印制板的工艺制作方法
2019-05-05 Information source: Tengchuangda

1)根据工程设计,选择好合适的铝板型号、厚度,下料。


2)铝板钻孔。钻孔位置同成品铝基双面板的元件孔。其孔径必须比第二次钻孔的孔径大一些(≥0.3mm~0.4mm).


3)铝板作阳极氧化处理,使铝基表面覆盖一层均匀的绝缘的天色氧化膜,膜厚度应大于10微米。


4)根据工程设计,查看夹心铝基板的结构,对半固化和铜箔下料。半固化片型号、尺寸及其铜箔厚度、尺寸应符合工程设计文件的要求。


5)压制成形。压制工艺用FT4层压工艺。


6)第二次钻孔。对层压完后的夹心铝基印制板的元件孔钻孔,必须保证第二次和第一次钻孔的孔中心重合。即使用第一次钻孔的磁带,但第二次钻孔比第一次要小些,避免元件孔与金属铝板短路。


7)化学趁铜,板面镀铜,光成像,图形电镀,蚀刻,阻焊。。。。外形加工,最终检查。各工序的制作,同常规FR4工艺


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