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作者对带有光亮晶粒缺陷的L4M纯铝板进行了化学成分、金相分析、机械性能、冲压拉伸工艺、焊接和表面阳极化工艺试验;探讨了光亮晶粒的成因和性质。试验表明,纯铝板中的光亮晶粒对铝板的抗腐蚀性能几乎无影响,对焊接性能和表面阳极化无影响,机械性能有所下降。对于外观质量要求较高且必须采用拉伸变形工艺的工件,不宜采用这种带有光亮晶粒缺陷的铝板来制作。
The author has carried on the chemical composition, the metallographic analysis, the mechanical property, the stamping stretch craft, the welding and the surface anodizing craft experiment to the L4M pure aluminum plate which has the bright grain defect, Discusses the bright grain the origin and the nature. The experiment shows that the bright grain in the pure aluminum plate has almost no effect on the corrosion resistance of the aluminum plate, has no influence on the welding performance and the surface anodization, and the mechanical property declines. For the appearance of the higher quality requirements and the workpiece must be used tensile deformation process, should not use this with bright grain defects of aluminum to produce.