The paper discusses the influence of alloying and heat treatment on drill bit materials,and analyses the chemical composition of recently-developed DH-MQ steel and the heat treatment process.

• 着重讨论了合金化和热处理工艺对凿岩钻头材料的影响,并具体分析了近年来出现的DH-MQ钢的化学成分及热处理工艺。