【摘要】 介绍了矿用支护钢调质前后机械性能对比、调质钢的抗弯试验及使用情况。结果表明,调质后支护钢机械性能大为改善,支架承载能力大幅提高,可以小截面取代大截面,节省钢材,降低成本。更多还原

【Abstract】 The paper introduces the comparsion between the properties of the steel for mine supporting before and after queening and tempering for it, and describes its bending test and service conditions. The results show that the mechanical property of the steel after quenching and tempering is greatly improved, and the bearing capacity of the support is greatly increased, so the large section supporting steel can be replaced with small section on, thus saving the steel and cutting down the更多还原