Recently, the news from hebei iron and steel group scale plate abrasion, MR tin substrate material plate type bad problem was successfully overcome and heavy flat rate decreased from 4.08% to 4.08%, and the basic stability zone plate type after plating, MR material for the future laid a good foundation stable production in large quantities.
Since last year, the factory production of MR tinplate material substrate after generally show a flat edge wave in the process of tin plating, the serious influence of temper mill production order. In order to improving the quality of MR material product plate type, earlier this year, the factory set up specialized technical research team, detailed understanding of the features of MR material raw materials, and combining with actual production with specific guidance. At the same time, they are in the middle of the mill process for the given of bending roll and roll speed across is optimized, according to the type of material are realized, the maximum guarantee after rolling strip width direction outspread, after rolling of strip shape is good. On this basis, in the process of fire test special annealing process, according to the thickness of strip steel pressure ratio and product test and optimize the annealing process, ensure that after annealing strip uniform of the organization. After the implementation of these measures, MR tin of substrate material of heavy flat rate decreased significantly, the implementation after plating with steel plate shape basically stable.