一、前言钎杆是凿岩作业的重要工具,随着矿山采掘工业的迅速发展,对钎杆相应地提出了更高的要求。为此,我们对钎钢钢种、冶轧工艺、热处理工艺进行了研究和实际凿岩试验。经有关单位几年的共同努力,研制成了两个钢钎新钢种和相应的工艺方法,使钎杆的使用寿命提高了一步。22毫米六角小钎杆的试验寿命达200～250米/根,大生产的寿命达100～120米/根;φ32毫米圆形联接钎杆试验寿命达1262米/根。 First, the foreword Drill rod is an important tool for rock drilling operations, with the rapid development of mining industry, mining, mining rod accordingly put forward higher requirements. To this end, we drill steel, smelting process, heat treatment process were studied and the actual drilling test. After years of joint efforts by the relevant units, the company has developed two new types of steel brazing and the corresponding technological methods, so that the service life of the drill rod is increased by one step. 22 mm hexagonal small drill rod test life of 200 ~ 250 m / root, the production of life of up to 100 ~ 120 m / root; φ32 mm circular coupling rod test life of 1262 m / root.