热镀锌机组沉没辊轴套材料选择研究

Material Selection of the Bushings for Sink Rolls on HGL

根据热镀锌机组沉没辊轴套的失效机理及工况条件对材料性能要求的分析，选择了６ 种材料进行浸锌试验，并着重对３ 种材料进行工况磨损试验，最终选定２ 种材质制成轴套进行两次现场实地试验，结果表明热作模具钢Ｈ１１ 和高速钢Ｍ２ 制造的轴套使用寿命分别是原来的２ 倍和３ 倍。建议将Ｈ１１ 的碳含量提高到０．５ ％ ～０．６ ％ 能使其更适合轴套使用工况。

According to the analysis on the failure mechanism of the sink rolls’ bushings for HGL and the material properties required by service environment,there were 6 kinds of materials to be selected and soaked in molten zinc,3 kinds of them were tested under mimic service condition,finally,2 of the three were made into bushings and underwent tests twice on HGL.As a result,the service life of the bushings made of hot working die steel H11 and HSS M2 is two and three times respectively as long as the former’s.It is suggested that the carbon content of H11 should be increased to 0.5%～0.6% so as to meet the needs for bushings better.