摘要
为了保证彩印后产品的效果,用于制作奶粉罐的镀锡板需进行5~8次印铁烘烤。在多次烘烤中素铁面与烘房花架接触的位置经常出现黑色的花架烫伤缺陷,无法满足用户的使用要求。该缺陷分析表明,花架烫伤处锡层有严重的擦伤,其发生的原因为带钢和花架在印铁过程中发生摩擦造成。通过改进1#、2#机架工作辊配辊方式提高粗糙度、提高带钢表面合金锡厚度、改变钝化方式,有效解决了印铁过程花架烫伤缺陷的发生。
The tinplate used for making milk powder cans,has to be baked for 5 ~ 8 times to guarantee the appearance effect after the can was color printing. But after multi-times baking,some black burn defects often appeared on the surface of the tinplate which was contact with baking frame,which can＇t meet the user＇s requirements. The analysis of the defect shows that,Sn layer was contused heavily when the tinplate was baking,the reason was that the tinplate and the frame scrub to each other in the printing process. By improving the mode of work rolls in stand 1 and stand 2when the plate was temper rolling to increase the roughness of the tinplate,increasing the thickness of the Sn alloy layer in the reflow process and improving the passivation process,which were effective to prevent the frame burn defects happen.
出处
《宝钢技术》
CAS
2016年第2期43-47,共5页
Baosteel Technology
关键词
镀锡板
奶粉罐
花架烫伤
粗糙度
钝化膜
tin plate
milk powder cans
frame burn defects
roughness
passivation film
