【摘要】 研究了阴极辊焊缝处组织与电解铜箔表面上形成的光亮带之间的关系。研究发现 ,在电解铜箔生产中 ,阴极辊表面焊缝处组织与基体金属组织晶粒尺寸不同级 ,因此电流在阴极上分布不均匀 ,在相同时间内沉积的铜箔厚度也不均匀 ,厚度差引起铜箔色差 ,形成光亮带 ;从电结晶的角度看 ,焊缝处晶粒尺寸大、分布的电流密度低 ,因此 ,在焊缝处沉积的铜箔的晶粒尺寸也较大 ,焊缝斑被原样复制。更多还原

【Abstract】 The relationship of the welding seam microstructure of the drum cathode and the light region forming on the copper foil surface was studied. It was found that during the electrodepositing process, the grain size of the welding seam and that of the matrix metal is not the same grade so that the current distribution in the cathode is uneven. During the same time the thickness of electrodeposited copper foils is not homogeneous and the thickness difference results in the luster difference on copper foils surface, then the light region appears. According to the theories of electro crystalization, in the welding seam the grain size is bigger and the current density is smaller, so the grain size of copper foils electrodeposited on welding seam is also bigger. Namely, the weld trace is copied.更多还原