在 IF 钢的生产过程中,退火是非常关键的工艺环节。针对酒钢 CSP 生产的 Ti-IF 钢进行研究,分析了在罩式退火工艺条件下,罩式退火工艺对 Ti-IF 钢组织与性能的影响。结果表明:退火温度从680℃上升到750℃保温2 h,试样抗拉强度从284下降到268 MPa,屈服强度从114下降到96 MPa,屈强比从0.40降低到0.36,伸长率从44.3%提高到47%,塑性应变比 r 90值从2.22升高到2.60。
Annealing is the key limit in the productive process of IF steel.Focusing on the TI-IF steel produced by CSP process in JiuSteel,the effect of batch type annealing process on microstructure and properties of Ti-IF steel is investigated.The results indicate that when the annealing temperature increases from 680 ℃ to 750 ℃ within 2 h, tensile strength reduces from 284 to 268 MPa,yield strength reduces from 114 MPa to 96 MPa ,yield ratio decrea-ses from 0.40 to 0.36,elongation increases from 44.25% to 47% and r 90 increases from 2.22 to 2.60.
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