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上海硅钢片厂热轧电机硅钢片采用轧后控制冷却新工艺,已有一台轧机投入大批生产。在钢的化学成份和其它工艺条件不变的情况下,使高级牌号D_(23)的比率显著提高,且有40％低硅钢片的单位铁损达到高硅钢片D_(31)水平,其中有75—78％数量达到日本冷轧矽钢片S_(18)的电磁性能标准。为区别常规工艺,特定轧后控制冷却硅钢片为“D_(31A)”,并制定了技术条件,保证生产使用。该项新工艺已于80年12月24日通过了技术鉴定。
Shanghai Silicon Steel Factory Hot-rolled silicon steel sheet after rolling controlled cooling of new technology, has been put into mass production of a rolling mill. In the same chemical composition and other process conditions of steel, the ratio of advanced grade D_ (23) was significantly increased, and 40% of the low silicon steel per unit iron loss reached the level of high silicon steel D_ (31), of which 75-78% of the number of Japanese cold-rolled silicon steel S_ (18) of the electromagnetic performance standards. In order to differentiate the conventional technology, the specific controlled cooling silicon steel sheet after rolling is “D_ (31A)”, and the technical conditions are formulated to ensure the production and use. The new technology passed the technical appraisal on December 24,