预应力PC钢棒用热轧盘条30MnSi质量分析及工艺改进

本钢北营公司生产的预应力PC钢棒用热轧盘条30MnSi,由于铸坯裂纹使得盘条在螺旋刻痕加工过程出现分层现象。通过调节结晶器的振动方式、电磁搅拌方式、二冷水冷却工艺及控制结晶器液面波动等方式抑制铸坯裂纹的产生,工艺优化后产品质量达到客户要求。

The hot rolled wire rod 30 MnSi for prestressed PC steel bar produced by Beiying Company of Benxi Iron and Steel Co., Ltd. is delaminated in the process of spiral scratching due to the crack of billet. By adjusting the oscillation mode of mold,electromagnetic stirring mode, secondary cooling water cooling process and controlling the fluctuation of mold liquid level, the occurrence of billet cracks is restrained, and the product quality meets customer requirements after process optimization.