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冷轧辊在使用中承受着很大的静载荷及动载荷,表面受到剧烈磨损,所以,冷轧辊最主要的技术条件是高而均匀的表面硬度。下面,以φ38冷轧工怍辊为例,介绍其热处理及硬度测试的情况。一、冷轧工作辊概况冷轧工作辊简图见图1所示。其材料为9Cr2钢,热处理技术条件为辊身表面硬度HS90～100,有效淬硬层深度不小于2毫米;辊身端面边缘软带宽度小于25毫米。
Cold roll in use to bear a great static load and dynamic load, the surface subjected to severe wear and tear, so the most important technical conditions of cold roll is high and uniform surface hardness. Next, taking the φ38 cold-rolled work roll as an example, the heat treatment and the hardness test are introduced. First, the cold work roll Overview Cold work roll sketch shown in Figure 1. The material is 9Cr2 steel, heat treatment technical conditions for the roll surface hardness HS90 ~ 100, effective hardened layer depth of not less than 2 mm; roll edge of the soft edge width of less than 25 mm.