冷激合金铸铁气门挺杆表层组织对其耐磨性的影响
Influence of Surface Layer Microstructure on Wear Resistance of Chilled Alloy Cast Iron Tappet
摘 要
为了深入了解冷激合金铸铁气门挺杆的磨损规律,研究了冷激合金铸铁气门挺杆表层组织对耐磨性的影响.结果表明:当气门挺杆组织中的石墨以点状均匀分布,碳化物呈细小针状、块状,分布较为均匀时,耐磨性较好,磨损形式以划伤、点蚀为主;当气门挺杆组织中的石墨以片状均匀分布,碳化物呈粗大针状、块状,分布不均匀时,耐磨性较差,磨损形式以剥落为主.
气门挺杆
组织
耐磨性
chilled alloy cast iron
tappet
microstructure
wear resistance
Abstract
In order to deeply comprehend the wear regularity of chilled alloy cast iron tappet,the influence of surface layer microstructure on wear resistance was studied.When the microstructure of surface layer is in the form of fine spot graphite and acicular or blocky carbide distributing equably,wear resistance of the tappet is high and wearing form is mainly scratch and pitting corrosion.Otherwise,when the microstructure of surface layer is in the form of lamellar graphite and rough acicular or blocky carbide distributing unevenly,wear resistance of the tappet is low and wearing form is mainly spalling corrosion.
中图分类号 TG143.6 TG113.1 U464.134
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收稿日期 2006/3/13
修改稿日期 2006/5/16
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备注赵建才(1965-),男,山东济南人,讲师,博士.
引用该论文: ZHAO Jian-cai,MEI Dian-jun. Influence of Surface Layer Microstructure on Wear Resistance of Chilled Alloy Cast Iron Tappet[J]. Materials for mechancial engineering, 2007, 31(2): 50～52
赵建才,梅殿君. 冷激合金铸铁气门挺杆表层组织对其耐磨性的影响[J]. 机械工程材料, 2007, 31(2): 50～52
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【3】林子光,郭炎.表面形貌对抗擦伤能力影响的实验研究[J].机械设计,1999(11):8-10.
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