摘要
本文通过对煤岩钻头铸造缺陷的检验,从理论和实践两个方面对其常见铸造缺陷进行了分析和研究,找出了缺陷生成的原因,并针对性地提出了改进措施。
This paper analysed and studied the casting defects of coal-rock bits both theoretically and practically.It found out the causes of the defects occured and reised the improving measures.
关键词
钻头
铸造缺陷
煤矿开采
煤岩钻头
coal-rock bits
casting defect,mould shell
liquid metal
