| 离心铸造高铬合金铸铁气门座圈的组织及耐磨性能研究 |
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| 引用本文： | 季同鑫,薛茂权,黄之德. 离心铸造高铬合金铸铁气门座圈的组织及耐磨性能研究[J]. 铸造设备与工艺, 2021, 0(1): 30-34 |
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| 作者姓名： | 季同鑫 薛茂权 黄之德 |
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| 作者单位： | 常州工业职业技术学院现代装备制造学院;全椒雷科德精密机械有限公司 |
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| 基金项目： | 常州工院科研团队项目(ZD201813101003);江苏省大学生创新训练计划项目(202013101012Y)。 |
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| 摘 要： | 采用离心铸造制备两种高铬合金铸铁气门座圈.利用X射线衍射仪(XRD)、金相显微镜、洛氏硬度计和扫描电镜(SEM),对气门座圈铸态及热处理态后的试样物相组成、金相组织、力学性能及拉伸断口形貌进行了观察和分析,同时在销盘式摩擦磨损试验机上对高铬合金铸铁气门座圈的耐磨性能进行了磨损试验.结果表明,热处理前高铬合金铸铁主要为由...
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| 关 键 词： | 高铬合金铸铁 离心铸造 耐磨性能 碳化物 气门座圈 |
Microstructure and Wear Resistance of Centrifugal Casting High Chromium Cast Iron Marine Valve Seat Ring |
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| JI Tong-xin,XUE Mao-quan,HUANG Zhi-de. Microstructure and Wear Resistance of Centrifugal Casting High Chromium Cast Iron Marine Valve Seat Ring[J]. Foundry Equipment and Technology, 2021, 0(1): 30-34 |
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| Authors: | JI Tong-xin XUE Mao-quan HUANG Zhi-de |
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| Affiliation: | (Changzhou Institute of Industry Technology,Changzhou Jiangsu 213164,China;Quanjiao Recode Precision Machinery Co.,Ltd.,Quanjiao Anhui 239500,China) |
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| Abstract: | Two kinds of high chromium alloy cast iron marine valve seat were fabricated by centrifugal casting.The microstructures,tensile fracture morphology and mechanical properties were examined using X-ray diffractometer(XRD),scanning electron microscope(SEM),optical microscope and rockwell hardness tester,the wear resistance were also characterized by the pin on disc tribological tester.The results show that the as-cast microstructure of high chromium cast iron is primary austenite,eutectic austenite and eutectic carbide,and the microstructure after heat treatment is martensite and carbides,the hardness and strength are increased obviously.The wear resistance of high chromium cast iron after heat treatment is also improved due to the improvement of matrix structure and carbide morphology and distribution. |
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| Keywords: | high chromium cast iron centrifugal casting wear resistance property carbides marine valve seat ring |
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