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介绍了ZA12合金板材包铝层的类别和标准,分析研究了板材横向包铝层局部过薄的产生原因,提出了产生包铝层厚度不均匀的主要原因及防止方法.“,”The assertment and standard of cladding for 2A12 alloy are introduced,analyzing and studying the reason for partial over-thin reason for plate cladding, explainingthe main reason and suggesting the countermeasure for inhomogeneous distribution in thickness of cladding are important.