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轧后余热处理国外从七十年代起用于大生产。上海钢研所于1981年研究成功“螺纹钢筋轧后余热处理工艺和设备”用于上钢三厂,获得上海市重大科技成果一等奖。 上钢三厂采用轨后余热工艺经济效益显著 上钢三厂采用这一工艺后,用20Mnsi代替25Mnsi生产按BS4449—78标准出口的螺纹钢筋,性能合格率由80％左右提高到100％,成材率由84％提高到92％,现已生产了40万吨,纯增利2400万元,创汇1亿元。
After rolling heat treatment abroad from the seventies for large-scale production. In 1981, Shanghai Steel Research Institute successfully researched the “waste heat treatment process and equipment after rolling of steel bar” for the third plant of Shanghai Steel and won the first prize of major scientific and technological achievements of Shanghai Municipality. Steel Plant after using rail waste heat significant economic benefits Shangshang Steel Third Plant using this process, the use of 20Mnsi instead of 25Mnsi production according to BS4449-78 standard export rebar, performance pass rate increased from 80% to 100%, timber The rate has been raised from 84% to 92%. Now, it has produced 400,000 tons of pure silver and added 24 million yuan to earn 100 million yuan.