论文部分内容阅读
从近几年我厂承接的工程机械修理任务来看,挖掘机、装载机斗齿的修复量较大。斗齿工作条件相当恶劣,磨损非常严重,寿命较短。尤其是挖掘机挖掘含岩石的土壤及挖掘爆破的岩石时,由于坚硬的岩石对斗齿的冲击作用,产生严重的凿削式磨料磨损。斗齿工作部分磨损50％左右时,应及时予以修复。斗齿材料根据生产厂家而异,其焊修特点也不相同。但常用材料一般为高锰钢或中碳低铬钢(碳当量约为0.65～0.75)。判断这两种材
From the point of view of the engineering machinery repair tasks undertaken by our factory in recent years, the amount of repair of excavator and loader bucket teeth is relatively large. The working conditions of bucket teeth are rather harsh, wear is very serious, and the life is short. Especially when excavators excavate soils containing rocks and excavate blasting rocks, due to the impact of hard rocks on the teeth of the buckets, severe abradable abrasive wear occurs. When the working part of bucket tooth wears about 50%, it should be promptly repaired. The tooth material differs depending on the manufacturer, and the welding repair characteristics are also different. However, commonly used materials are generally high-manganese steel or medium-carbon low-chromium steel (carbon equivalent weight is approximately 0.65 to 0.75). Judging these two materials