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通过化学成份和热处理工艺的优选,试制出一种中锰钢齿板;现场试验证实其耐磨性高于传统的 Mn13和合金 Mn13齿板。中锰钢齿板使用后工作面的硬度高达 Hv_(0.2)800,远高于同等条件下 Mn13的硬度,X—线、金属薄膜电镜分析和电子衍射花样表明,中锰钢齿板加工硬化性能的改善是高密度位错与应变诱发马氏体的综合效应。
Through the optimization of chemical composition and heat treatment process, a medium manganese steel tooth plate was tried out. Field tests confirmed its wear resistance was higher than that of the traditional Mn13 and alloy Mn13 tooth plates. The hardness of the manganese steel tooth plate after use is up to Hv 0.280, which is much higher than the hardness of Mn13 under the same conditions. The X-ray diffraction, electron microscopy and electron diffraction pattern show that the work hardening properties of the medium manganese steel plate The improvement is the combined effect of high-density dislocations and strain-induced martensite.