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CONTINUOUSLY CAST GCR15 BEARING STEEL WIRE ROD CARBIDE NETWORK CONTROL METHOD
CONTINUOUSLY CAST GCR15 BEARING STEEL WIRE ROD CARBIDE NETWORK CONTROL METHOD
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机译：连续铸造GCR15轴承钢丝杆碳化物网络控制方法
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摘要
A continuously cast GCr15 bearing steel wire rod carbide network control method. The control method performs design optimization of chemical components of GCr15; before being put into use, a steel billet is evaluated and graded according to a superheating temperature and a macrostructure, feed specifications are clarified according to a billet grading, and special control of a heating process is performed, wherein a high-temperature time period having a furnace temperature ≥1150°C is appropriately extended and a rolling starting temperature is appropriately raised for a downgraded billet, and efforts are made to ease billet segregation under long high-temperature diffusion conditions; a coil air cooling process is improved, a coil in the air cooling process is adjusted according to a specified size, rapid cooling from a laying temperature to 700°C or below is performed, and the coil is kept at approximately 630-700°C for a set period of time before entering a cover again, thereby implementing effective carbide network control.
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