Analysis and Study on Crack Defect of Steel 42CrMoA Quenching for Percussive Rock Drill Rod
Steel used for percussive rock drill rod has strict requirements for chemical composition and heat treatment of raw materials due to its use in broken rocks.Based on the macroscopic analysis,chemical composition,macro,metallography and hardness test of 3 different kinds of defects and normal samples to be quenched after normalization,the stress cracks caused by improper heat treatment are determined.
drill rod steel42CrMoAquenching crackingmetallographic analysis
万方数据
维普
