Preparation method for improving emulsion white strip defect after C19400 copper alloy strip is subjected to emulsion cold rolling

The invention relates to a new material, in particular to a preparation method for improving the emulsion white strip defect after a C19400 copper alloy strip is subjected to emulsion cold rolling. According to the method, in order to improve the quality stability of the emulsion in the C19400 copper alloy strip rolling process of the four-roll cold rolling mill, measures are taken in the aspects of fixed replacement period, filtering requirements, use process control and the like, it is ensured that bacteria do not grow in the emulsion, it is ensured that the surface of the rolled strip is free of the surface defect of emulsion white strips, and the quality requirement for machining of the next procedure is met. By adopting technical measures, the surface of the C19400 copper alloy is free of emulsion white strip defects after emulsion rolling, and the surface quality requirement of the copper strip in the follow-up machining process is met. 本发明涉及新材料，具体为一种改善C19400铜合金带经乳液冷轧后出现乳液白条缺陷的制备方法。本方法为了提升乳化液在四辊冷轧机轧制C19