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我厂过去生产装载机的斗牙及刀片材料均为ZGMn13。该钢处理后的硬度不高于HB180～220。但强烈冲击和压力后,会产生冷加工硬化,其硬度可达HB450～550,具有了良好的耐磨性能。装载机的工况和工作介质表明其磨损是静载而不是动载磨损。因而不会产生加工硬化,耐磨性就较差。1979年以ZG35CrMo代替ZGMn13效果更差。经过研究与试制,确定了以ZG28CrMnMo来代替ZGMn13。一、ZG28CrMnMo钢的成分和性能 ZG28CrMnMo钢的化学成分列于表1,其热处理制度和机械性能列于表2。材料静载下的耐磨性能与硬度、韧性、
Our factory used to produce bucket teeth and blade materials are ZGMn13. After the hardness of the steel is not higher than HB180 ~ 220. However, strong impact and pressure, it will produce cold work hardening, its hardness up to HB450 ~ 550, has a good wear resistance. Loader conditions and working media indicate that the wear is static instead of dynamic wear. So does not produce work hardening, wear resistance is poor. 1979 ZG35CrMo instead of ZGMn13 worse. After research and trial production, it was confirmed that ZGMnMo should be replaced by ZG28CrMnMo. First, the composition and properties of ZG28CrMnMo steel ZG28CrMnMo steel chemical composition is shown in Table 1, the heat treatment system and mechanical properties are shown in Table 2. Material under static load wear resistance and hardness, toughness,