高锰钢履带板铸件晶粒粗大缺陷的分析与改进  

Analysis and Enhancement of Coarse Grain Size in High Manganese Steel Track Plates Castings

作　　者：孙建昌[1] 卫心宏 张竣明 SUN Jian-chang;WEI Xin-hong;ZHANG Jun-ming(Research and Development Center of Taiyuan Heawy Industry Co.,Ltd.,Taiyuan Shanxi 030024,China;Taiyuan Heawy Industry Cas ting and Forging Sub-Co.,Taiyuan Shanxi 030024,China)

机构地区：[1]太原重工股份有限公司技术中心,山西太原030024 [2]太原重工股份有限公司铸锻件分公司,山西太原030024

出　　处：《铸造设备与工艺》2023年第5期48-50,53,共4页Foundry Equipment & Technology

摘　　要：对大型挖掘机高锰钢履带板断裂部位进行取样,通过宏观断口观察、低倍酸浸、金相组织检验等方式对履带板早期断裂的原因进行了分析,结果表明组织晶粒粗大导致大型挖掘机高锰钢履带板铸件过早失效。结合生产实际,制定了高锰钢履带板铸件晶粒度改善的工艺措施,通过冶炼、铸造及热处理等工艺的优化,提高了高锰钢履带板铸件的晶粒度水平,提升了产品的质量和使用的可靠性,延长了履带板铸件的使用寿命。The present study examines the fracture behavior of high manganese steel track plates in large excavators and analyzes the underlying causes for their premature failure.The findings indicate that the presence of a coarse grain structure is responsible for the early fractures observed in these castings.In light of practical production considerations,technological measures have been developed to enhance the grain size of high manganese steel track plate castings.By optimizing smelting,casting,and heat treatment processes,improvements have been achieved in both grain size distribution and overall product quality,leading to enhanced reliability and extended service life of track plate castings.

关 键 词：高锰钢 履带板 晶粒粗大 工艺措施 

分 类 号：TG337[金属学及工艺—金属压力加工]