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Possesses the minute spheroidization carbide the carbon steel or the production manner null of the alloy
Possesses the minute spheroidization carbide the carbon steel or the production manner null of the alloy
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机译:具有微小球化碳化物,碳钢或合金的生产方式
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摘要
PURPOSE:To save energy consumption and improve productivity by subjecting a high-carbon steel to hot rolling at =Ar3, to cooling at specific cooling velocity, to coiling at specific temp., to specific cold working, and then to heating and holding at specific temp. CONSTITUTION:A high-carbon steel or high-carbon alloy steel is hot-rolled in a temp. region of =Ar3, cooled at =30 deg.C/S cooling rate, and coiled in the temp. range between 500 deg.C and Ms. Subsequently, the hot rolled sheet is cold- rolled at =10% draft, and the resulting sheet is heated up to a temp. between the recrystallization temp. and the A1 point and held at the above temp. for 30-600sec, or, after the above hot rolling, the hot rolled sheet is coiled in a temp. range of (Ms+Mf)/2 while being cooled at =30 deg.C/S cooling rate and is then cold-rolled at =10% draft, followed by holding in a similar manner as above. By this method, spheroidizing treatment can be carried out in a short time.
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