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为了获得经济价值和利用价值更高的耐磨材料,设计了一种以1.0%钛强化的中铬铸铁,并根据Jmat曲线确定了热处理工艺,同时借助光学显微镜、扫描电子显微镜、硬度计、冲击试验机和磨料磨损试验机等仪器设备,对其铸态及热处理态的显微组织和性能分别进行了观察测试。结果表明,经1 040℃淬火+回火处理的试样综合性能最好,其硬度为56.2HRC,耐磨性能比高铬铸铁高25%,并且该铸铁含铬量较低,具有一定的价格优势。
In order to obtain the economic value and higher value of wear-resistant materials, designed a 1.0% titanium reinforced chromium cast iron, and according to Jmat curve to determine the heat treatment process, at the same time by means of optical microscope, scanning electron microscope, hardness tester, impact Testing machine and abrasion testing machine and other equipment, the as-cast and heat-treated microstructure and properties were observed and tested. The results show that the samples hardened by quenching and tempering at 1 040 ℃ have the best comprehensive properties, the hardness is 56.2HRC, the wear resistance is 25% higher than that of high-chromium cast iron, and the content of chromium in the cast iron is low with a certain price Advantage.