| 刮板机中部槽用贝氏体球铁组织与性能的研究 |
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| 引用本文： | 刘鉴卫,王铁宝,焦健,李国彬.刮板机中部槽用贝氏体球铁组织与性能的研究[J].煤矿机械,2009,30(3). |
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| 作者姓名： | 刘鉴卫 王铁宝 焦健 李国彬 |
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| 作者单位： | 河北工业大学,天津,300130 |
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| 摘 要： | 根据刮板输送机中部槽的使用条件失效形式和性能要求,研究了等温淬火工艺对球铁淬火组织和性能的影响。在290~210℃等温淬火(920℃奥氏体化)均可得到贝氏体。在230℃等温90 m in,球墨铸铁可获得良好的力学性能,即硬度为HRC45.5,冲击功为20.2 J,耐磨性比16Mn和ZG30SiMn分别提高了1.2和1.1倍。
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| 关 键 词： | 刮板输送机 中部槽 贝氏体 球墨铸铁 等温淬火 |
Investigation of Microstructure and Properties of Bainite Ductile Iron for Middle Flute of Scraper Conveyor |
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| LIU Jian-wei,WANG Tie-bao,JIAO Jian,LI Guo-bin.Investigation of Microstructure and Properties of Bainite Ductile Iron for Middle Flute of Scraper Conveyor[J].Coal Mine Machinery,2009,30(3). |
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| Authors: | LIU Jian-wei WANG Tie-bao JIAO Jian LI Guo-bin |
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| Abstract: | According to the failure way and property requirements,the effects of isothermal quenching on the microstructure and properties of spheroidal graphite cast iron were studied.When the isothermal quenching at 290~210℃(austenitizig at 920℃),spheroidal graphite cast iron can obtaine the bainite microstructure.Austempering at 230 ℃ for 90 mins,the spheroidal graphite cast iron shows fine mechanical properties,i.e.the hardness is HRC 45.5,the impact toughness is 20.2 J/cm2,and resistance to wear is respectively 1.2 times and 1.1 times as large as 16Mn and ZG30SiMn. |
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| Keywords: | scratch board conveyer middle flute bainite spheroidal graphite cast iron isothermal quenching |
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