论文部分内容阅读
采用27SiMnNi2CrMo D38中空钢经280℃等温淬火(不回火)制成的T38×1220接杆钎杆,用于水星14-lL型全液压凿岩台车,在弓长岭井下铁矿试验结果,平均使用寿命达80m/根以上。
Using 27SiMnNi2CrMo D38 hollow steel by 280 ℃ isothermal quenching (not tempering) made of T38 × 1220 post drill rod for Mercury 14-lL full hydraulic rock drill, bowing in Gongchangling underground iron ore test results, The average service life of 80m / root or more.