Production Technology Development for Low-carbon Bainitic Steel CW590L
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摘要: 在实验室对低碳贝氏体钢590L进行了开发研究,主要包括成分设计和连续冷却转变(CCT)曲线的测试,最后进行冶炼和轧制。根据实验室研究结果并结合川威950生产线实际情况,优化了CW 590L微合金钢的工业生产方案并成功进行了实践。对工业生产的微合金钢的组织与性能进行检测,其平均屈服强度为505 MPa,平均抗拉强度为630 MPa,平均延伸率为27%,冷弯(d=1a)全部合格且综合性能波动不大,产品组织和性能完全满足用户需求。Abstract: Through the cooperation with technology institutions,the development of low-carbon bainitic steel 590L grade is studied in the laboratory.The main work is composition design and CCT curve test of steel.According to the laboratory research results and combined with the 950 production line situation of Chuanwei,the industrial production plan of CW590L micro-alloy steel is optimized and practice is successfully put forward.The detection of microstructure and properties of the over 10 000 tons micro-alloy steel product shows that the average yield strength is 505 MPa,the average tensile strength is 630 MPa,the average elongation is 27% and the cold bending(d=1a) is completely qualified.The microstructure and properties fully satisfy the needs of the clients.
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Key words:
- low carbon bainitic steel /
- CW590L /
- microalloying /
- CCT curve /
- microstructure /
- properties
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