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.

• 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。