一种长寿命热轧圆钢成品孔型构成方法

A Pass Composition Method for Long-life Hot Rolled Round Steel Products

强韧性与耐磨性是复合铸铁轧辊的主要性能,过钢量是衡量轧辊好坏的关键指标,通过介绍圆钢成品孔型构成方法、设计原理、技术要求,分析单扩张孔型不足之处,创新设计双扩张多半径成品孔型构成方法,投入生产线后,所生产的成品圆钢尺寸精度、不圆度符合要求,提高了轧辊利用率40%,节约了备件费用,在同行业具有一定的推广价值。

The toughness and wear resistance are the main properties of compound cast iron rolls, the carrying capacity is the key index to measure the quality of rolls. Through introducing the pass composition method, design principle and technical requirements of round steel products, the shortcomings of single-expansion pass were analyzed, and the innovative design of finished product’s pass composition method with double expansion and multi-radius was carried out, and after putting into the production line, the dimension accuracy and non-roundness of finished round steels met the requirements, the utilization ratio of rolls was increased by 40%, the cost of spare parts was saved, having a certain popularization value in the same industry.