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针对叉车用门架槽钢Q420C在试生产过程中出现的边部裂纹、冲击性能波动等问题进行了深入分析研究。通过调整成分及脱氧工艺、改进夹杂物去除及轧制工艺、对轧钢设备适度改造等一系列措施,优化了生产工艺流程。生产实践表明,Q420C质量得到明显改善,杜绝了边部裂纹问题,不充满和拉丝现象得到有效控制,各项性能指标满足产品质量要求。
Aiming at the problems of edge crack and impact performance fluctuation of forklift Q420C in the trial production, the in-depth analysis was carried out. By adjusting the composition and deoxidation process, improve the inclusion removal and rolling process, a modest transformation of rolling equipment and a series of measures to optimize the production process. Production practice shows that Q420C quality has been significantly improved to eliminate the problem of edge cracks, drawing and drawing are effectively controlled, the performance indicators to meet product quality requirements.