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一、概述冷轧工作辊的寿命不仅取决于它的质量,也取决于它的正确使用和维护。现代大型冷轧机组的使用条件十分繁重,要求轧辊必须具有足够的刚性,很高的辊面硬度和耐磨性。因此,冷轧工作辊一般都采用高碳铬系合金钢锻制而成,辊面进行强冷淬火,这就使辊面一定深度内得到硬脆的马氏体组织,而轧辊内部却有相当大的残余应力。冷轧工作辊所具有的这些特殊性能使其难以承受温度的急剧变化和过大的外力作用。
First, an overview Cold-rolled work roll life depends not only on its quality, but also on its proper use and maintenance. Modern large cold-rolled unit of the conditions are very heavy, requiring the roll must have sufficient rigidity, high hardness and wear resistance of the roll. Therefore, the cold-rolled work rolls are generally made of high-carbon chromium alloy forged steel, the roller surface quenching, which makes a certain depth of the roll to get hard and brittle martensite, but there is a considerable internal roller Large residual stress. These special properties of cold-rolled work rolls make it difficult to withstand the dramatic temperature changes and excessive external forces.