种GCr15轴承钢小方坯的生产方法

• Format: Patent
• Language: Chinese
• Published: 07.09.2016
• Subjects: ALLOYS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; METALLURGY OF IRON; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

本发明公开了种GCr15轴承钢小方坯的生产方法，工艺流程为"铁水预处理120t顶底复吹转炉LFVD150mm×150mm小方坯连铸机高线铸坯加热高压水除鳞轧制控冷"。转炉采用双渣法工艺进行脱硫，终点高拉碳；LF精炼实现钢水的还原精炼和深脱硫、高碱度；VD真空脱气去除钢水中的氢和氮，破空后镇静，去除夹杂物和进步脱硫；连铸过程采用低过热度弱冷工艺、电磁搅拌技术和铸坯缓冷工艺，提高铸坯的质量；铸坯加热工序保证充足的加热时间及加热温度，保证铸坯加热均匀，碳化物充分溶解。本发明的生产方法很好的控制了钢中的氧、氮及夹杂物的含量，且轧材具有良好的综合力学性能，满足国家标准。