冷轧辊在工作过程中要承受很大的轧制应力，加上轧件的焊缝、夹杂、边裂等问题，容易导致瞬间高温，使工作辊受到强烈热冲击，造成裂纹、粘辊、剥落甚至报废。因此，冷轧辊要有抵抗因弯曲应力、扭转应力、剪切应力引起的开裂和剥落的能力，同时也要有高的耐磨性。
Cold roll must bear a lot of rolling stress in the working process， add the weld， inclusion and edge crack of the rolled piece， which can easily lead to instantaneous high temperature，圣霖吊车轨， so that the work roll is subjected to strong heat shock，圣霖吊车轨哪家好， which causes crack， roll， peeling and even scrap. Therefore， the cold roller must resist the ability of cracking and spalling caused by bending stress， torsional stress and shearing stress，圣霖吊车轨购买， and also has high wear resistance.
（1）堆焊前需先将轧辊辊身表面的疲劳层或缺陷，尤其是裂纹必须彻底清除；
（2）在堆焊时，为了防止裂纹的产生，必须先加工轧辊辊身预热，圣霖吊车轨生产厂家，预热温度根据轧辊辊及堆焊材料而定。
(1) before welding， the fatigue layer or defect of the roller body surface must be first removed， especially the crack must be thoroughly removed.
(2) in the process of surfacing， in order to prevent cracks， the roller body must be pre heated， and the preheating temperature should be determined according to roll rolls and surfacing materials.
轧辊按材质主要分为哪几种类别？
轧辊按制造材料主要划分为铸钢系列轧辊、铸铁系列轧辊和锻造系列轧辊三大类别。
What are the main categories of the roll according to the material?
Rolls are mainly divided into three categories: cast steel series rolls， cast iron series rollers and forging series rolls.
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