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HOT ROLLED WIRE MATERIAL EXCELLENT IN COLD FORGING PROPERTY AFTER SPHEROIDIZING TREATMENT, SPHEROIDIZING-ANNEALED STEEL WIRE HAVING EXCELLENT COLD FORGING PROPERTY, AND METHOD FOR PRODUCTION THEREOF
HOT ROLLED WIRE MATERIAL EXCELLENT IN COLD FORGING PROPERTY AFTER SPHEROIDIZING TREATMENT, SPHEROIDIZING-ANNEALED STEEL WIRE HAVING EXCELLENT COLD FORGING PROPERTY, AND METHOD FOR PRODUCTION THEREOF
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机译：优质化处理后的冷锻性能中的热轧线材性能优异，优质化处理后的热轧退火金属线材及其生产方法
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摘要
The hot rolled wire rod , containing 0.005 to 0.6 wt% of C , 10 vol.% perlite doctor or higher, bainite is less than 75 vol% , the ferrite is not more than 60 % by volume ( doctor pearlite + bainite + ferrite ) should satisfy the relation of total of 90 % by volume . The method for manufacturing a hot-rolled wire rod is rolled to steel , and wound by 750 to 1000 , 400 from the upper limit temperature of 750 to 1000 to cool the lower limit to the temperature of 550 to 20 / sec or more cooling rate, in the 400 to 550 maintained more than 20 seconds , and cooling . The liner , comprising 0.005 to 0.6 wt % C , and the distance between the cementite (standard deviation / average value ) is not more than 0.50 has a tissue . The liner of the production process , and the hot-rolled annealed wire visualization .
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