按负公差轧制钢材可以使同一钢锭轧出更多的钢材,这不仅减少原材料的消耗,并降低了钢材的成本.我厂由于设备此较陈旧,在开始按负公差进行轧制时,曾出现了过多的二级品.自对影响负公差的各种因素作了较为详细和全面的分析后,通过各项技术措施计划的实现,解决了钢锭加热、孔型设计、轧辊车削质量、操作方法等问题,经过一年多的实践,取得了良好的效果.各主要指标完成情况如表1. Rolling of steel with negative tolerance allows the same steel ingot to be rolled out more, which not only reduces the consumption of raw materials but also reduces the cost of the steel.While our plant is relatively old, There are too many secondary products.After a more detailed and comprehensive analysis of the various factors affecting the negative tolerance, through the implementation of various technical measures to solve the problem of ingot heating, hole design, roll turning quality, Operation methods and other issues, after more than a year of practice, and achieved good results. The completion of the major indicators in Table 1.