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随着我国国产高效率新型凿岩机YT-25及YT-30在矿山凿岩中的大量使用,以往的中空炭8钢钎已不能满足需要。为了解决这个问题,新抚钢厂会同长沙矿山研究院、北京地质学院等单位协作进行新的中空合金钎钢的试验研究。经过一年多来室内及现场较全面系统的试验,对中空铬钼、中空55硅2锰钼二个合金中空钢号获得了基本成功。在弓长岭铁矿、河北铜
With the large-scale use of the domestic new high-efficiency rock drill YT-25 and YT-30 in mine rock drilling, the conventional hollow carbon 8 drill can not meet the needs. In order to solve this problem, the new steel plant in collaboration with Changsha Institute of Mining, Beijing Institute of Geology and other units in collaboration with the new hollow alloy steel brazing research. After more than a year of comprehensive laboratory and field tests, the hollow chrome molybdenum, hollow 55 Si 2 Mn 2 Mo hollow steel hollow steel number obtained the basic success. Changling Iron Bow, Hebei Copper