汽车安全带卷簧用热轧钢带的开发生产

Development and Production of Hot Rolled Steel Strip for Coil Spring of Automobile Safety Belt

根据性能要求,冶炼过程采用洁净钢冶炼技术,热轧过程严格控制轧制工艺,成功开发生产了汽车安全带卷簧用热轧钢带,产品质量检测表明,钢的化学成分控制较好,钢质纯净,夹杂物尺寸小,热轧钢带的组织为珠光体,无网状渗碳体,边部无全脱碳层,珠光体片层细且均匀,片层间距300～450 nm。

According to the performance requirements,the smelting process is made of the smelting technology of clean steel and the rolling process is strictly controlled by the hot rolling process.The hot rolled steel strip for the automobile safety belt reed spring is successfully developed and produced.The product quality test shows that the chemical composition of the steel is well controlled,the steel is pure and the inclusion size is small.The microstructure of hot-rolled steel strip is pearlite,no net cementite,no decarburization layer at the edge,fine and uniform pearlite lamella,and the spacing between lamellae is 300-450 nm.