矿井钻机卡瓦要求有较高的表面硬度和耐磨性,并要有相当的韧性,否则会在使用中出现脆性断裂。常用材料为T10钢,为充分发挥其性能优势,需要进行相应的热处理,以获得低温回火马氏体组织。但是由于该钢种成分和热处理工艺性的影响,在实际生产中淬火时经常出现裂纹,造成大量报废(废 Mine drill kava requires a higher surface hardness and wear resistance, and have considerable toughness, otherwise it will appear brittle fracture in use. Common materials for the T10 steel, to give full play to its performance advantages, the need for the corresponding heat treatment to obtain low-temperature tempered martensite. However, due to the composition of the steel and heat treatment process of the impact of the actual production of quenching often cracks, resulting in a large number of scrap (waste