新型低铬合金耐磨钢在挖掘机斗齿上的应用  

Application of New Low Chromium Alloy Wear Resistant Steel to the Excavator Bucket Teeth

作　　者：姜利坤[1] 

机构地区：[1]山东省科学院新材料研究所,山东济南250014

出　　处：《铸造》2013年第12期1225-1228,共4页Foundry

基　　金：山东省自然科学基金(ZR2010EL012)

摘　　要：研究了用于挖掘机斗齿的新型低铬合金耐磨铸钢。结果表明，该材料经过热处理后具有良好的综合性能，冲击韧性（带U型缺口）为20-28J／cm2，硬度为HRC50-54，抗拉强度为1630～1810MPa，伸长率为5％～7％。生产试验表明，该斗齿材料较高锰钢大大延长了挖掘机斗齿的使用寿命，减少了更换斗齿的次数，提高了机器运转效率，具有良好的经济效益。New low chromium alloy wear resistant cast steel used for excavator bucket teeth was studied. The results show that the material has good comprehensive mechanical properties after heat treatment, the impact toughness （with u-shaped notch） is 20-28 J/cm2, hardness is HRC 50-54, tensile strength is 1 630-1 810 MPa, the elongation is 5%-7%. The production trial shows that compared with high manganese steel, the material for bucket teeth greatly prolonged the service life, the frequency of replacement of dipper teeth was reduced, the efficiency of the machine was improved, and the good economic efficiency was obtained.

关 键 词：挖掘机 斗齿 耐磨合金 铸钢 马氏体 

分 类 号：TG142.72[一般工业技术—材料科学与工程]