路面铣刨机铣刨齿断裂原因分析  

Cause Analysis of the Milling Tooth Fracture of the Road Milling Machine

作　　者：程巨强[1] 汪学军 沈劲松 

机构地区：[1]西安工业大学材料与化工学院,西安710021 [2]湖北鸣利来冶金机械科技有限公司,湖北黄冈438000

出　　处：《凿岩机械气动工具》2016年第1期32-35,共4页Rock Drilling Machinery & Pneumatic Tools

摘　　要：针对路面铣刨机铣刨齿在施工过程中出现铣刨齿的断裂失效问题,从铣刨齿材料的组织方面进行原因分析,结果表明,铣刨机铣刨齿冲击韧性偏低、硬度偏高,材料中存在较多的夹杂物是导致铣刨齿断裂的主要原因。预防铣刨机铣刨齿断裂应从改善冶金质量、减少钢中夹杂物数量,改进热处理工艺,提高铣刀铣刨齿材料的韧性方面来考虑。For the fracture failure of the milling tooth which occurs during the construction using the road milling machine, the paper conduce a cause analysis in terms of the composition of the milling tooth ＇s materials. According to the results, low impact toughness, high hardness and much inclusions in materials of the milling teeth on the road milling machine primarily contribute to the fracture of milling teeth. To prevent the milling teeth from fracturing, we shall consider enhancing the metallurgical quality, improving the heat treatment process and increasing the toughness of the materials for the milling teeth.

关 键 词：铣刨机铣刨齿 断裂 金相组织 

分 类 号：TG421.6[金属学及工艺—焊接]