Manufacturing method of processing tin plated disc with excellent weldability and fruiting resistance

摘要

The present invention relates to a method for manufacturing a tin plate for processing excellent in weldability and fluting resistance. In manufacturing a tin plated disc, the carbon content is 0.005% or less by weight, 0.010% or less by sulfur, 0.003% or less by nitrogen, Manganese 0.20 to 0.50%, aluminum 0.03 to 0.06%, boron 0.0005-0.0020%, titanium 0.01 to 0.03%, chromium 0.02 to 0.06%, effective Ti / C atomic ratio 0.4 to 1.2, excess boron amount 0.0001 to After adjusting to 0.0005%, homogeneous treatment of aluminum-kind steel containing elements inevitably contained in steel production at about 1200 to 1250 ° C, finishing hot rolling is carried out at 900 to 920 ° C, directly above Ar3 transformation point, and hot rolling is performed. It is carried out at 600 to 700 ° C., and the temperature is in the range of 690 to 740 ° C. during annealing.