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使用光学显微镜、硬度计和冲击试验机,对比研究了两种衬板用低碳合金钢的组织和性能。结果表明:对于所研究的两种衬板用低碳合金钢,当铬含量为6.0%、镍含量为2%时,其退火态组织为少量先共析铁素体+屈氏体,淬火-回火态的组织为板条马氏体;当铬含量为9.0%、镍含量为1%、锰含量为1.5%时,其退火态和淬火回火态的组织均为马氏体。后者的硬度要高于前者,韧性次之。在含有铁矿石的酸性矿浆中,冲击功为1.2J时,铬含量为9.0%、镍含量为1%、锰含量为1.5%的低碳合金钢冲击腐蚀磨损性要优于铬含量为6.0%、镍含量为2%的低碳合金钢。
Using optical microscope, hardness tester and impact tester, comparatively studied the microstructure and properties of two kinds of low carbon alloy steel for lining. The results show that when the content of chromium is 6.0% and the content of nickel is 2%, the annealed microstructure of the two kinds of low carbon alloy steel used for lining is a small amount of pro-eutectoid ferrite + troostite, and the quenching- The tempered tissue is lath martensite. When the content of chromium is 9.0%, the content of nickel is 1% and the content of manganese is 1.5%, the microstructures of annealed and quenched and tempered are martensite. The latter hardness is higher than the former, followed by toughness. In the acidic ore slurry containing iron ore, impact energy of 1.2J, the chromium content of 9.0%, the nickel content of 1%, the manganese content of 1.5% low carbon alloy steel corrosion corrosion wear better than the chromium content of 6.0 %, Low carbon alloy steel with 2% nickel content.