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一、概况按照中日双方合同规定,武钢于1982年2月进行了取向硅钢的磁性考核试验。试验的冶炼、浇铸、初轧、热轧的工艺条件都严格按日方的要求进行。磁性考核通过以后,日方为中方制订了相应的技术规程。此后,各工序的操作都严格按该规程进行,热轧也不例外。但是,即使按该规程要求进行,取向硅钢成品的原牌号(Q_(10)+Q_(11))合格率仍然较低(1985年平均为74.70％),另有25.3％是Q_(12)以下低磁性牌号的产品。这不仅降低了武钢的经济效益(Q_(10)的单价为3200元/
I. Overview According to the contract stipulated by both China and Japan, WISCO conducted the magnetic examination of oriented silicon steel in February 1982. The smelting, casting, initial rolling, hot rolling process conditions are strictly in accordance with the requirements of Japan. After the magnetic examination passed, the Japanese side formulated corresponding technical regulations for the Chinese side. Since then, the operation of all processes are strictly in accordance with the rules, hot-rolled is no exception. However, the qualification rate of the original grades (Q_ (10) + Q_ (11)) of the finished silicon steel products is still low (averagely 74.70% in 1985) and another 25.3% is less than Q_ (12) even though the requirements of the code are followed. Low magnetic grade products. This not only reduces the economic benefits of Wuhan Iron and Steel (Q_ (10) unit price of 3200 yuan /