1983 Volume 23 Issue 5 Pages 410-416
Flange cracking of Drawn and Ironed can from tinplate is caused mainly by non-metallic inclusions in the end of the can. In this study, the chemical composition and the minimum size of non-metallic inclusions causing flange cracking in tinplate of Al-killed steel were examined. The chemical composition of non-metallic inclusions is composed of CaO-Al2O3 and the minimum size is 5μm in thickness and 50μm in width. Countermeasures for reducing inclusions were taken in the continuous casting process, and the tinplate quality was inspected by a magnetic inclusion detector, thus leading to a reduction in the flange cracking rate of Drawn and Ironed cans.
