3Cr2W8V模具钢的高温干摩擦磨损行为研究
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摘要
采用自制磨料磨损实验机,通过室温和高温滑动磨损实验,研究了钨系热作模具钢3Cr2W8V的干摩擦磨损性能。分析了3Cr2W8V钢室温和高温滑动磨损特性以及磨损面形貌,并对磨损机理进行了探讨。结果表明,初始加热温度对3Cr2W8V钢的抗磨性能有较大影响。在初始加热温度低于500℃时,3Cr2W8V钢具有良好的抗磨性能;当超过500℃以后,钢的抗磨性能迅速下降。低温和高温磨损时,3Cr2W8V钢的磨损面形貌均表现为以微犁削磨损为主,只是在室温时微犁沟浅,在650℃时微犁沟的宽度和深度加大。
The dry friction and wear properties of tungsten-based hot-work die steel 3Cr2W8V were studied by using self-made abrasive wear tester through room temperature and high temperature sliding wear tests. The sliding abrasion characteristics and abrasive surface morphology of 3 Cr2W8V steel at room temperature and high temperature were studied.The wear mechanism was discussed. The results show that the initial heating temperature has great effects on the anti-wear performance of 3Cr2W8V steel. When the initial heating temperature is below 500 ℃, 3Cr2W8V steel has good anti-wear performance. After over 500 ℃, the abrasion resistance of the steel decreases rapidly. Wearing at room temperature and high temperature, the wear surface of 3Cr2W8 V steel is in micro-plow wear. At room temperature, the micro-plowing is slight. At650 ℃, the width and depth of the micro-plowing increase.
The dry friction and wear properties of tungsten-based hot-work die steel 3Cr2W8V were studied by using self-made abrasive wear tester through room temperature and high temperature sliding wear tests. The sliding abrasion characteristics and abrasive surface morphology of 3 Cr2W8V steel at room temperature and high temperature were studied.The wear mechanism was discussed. The results show that the initial heating temperature has great effects on the anti-wear performance of 3Cr2W8V steel. When the initial heating temperature is below 500 ℃, 3Cr2W8V steel has good anti-wear performance. After over 500 ℃, the abrasion resistance of the steel decreases rapidly. Wearing at room temperature and high temperature, the wear surface of 3Cr2W8 V steel is in micro-plow wear. At room temperature, the micro-plowing is slight. At650 ℃, the width and depth of the micro-plowing increase.
引文
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[4]唐明华.3Cr2W8V热作模具钢的预处理工艺研究[J].现代机械,2003(4):73-74.
[5]李志,曲敬信,吴仲行,等.真空熔结镍基合金涂层的组织结构及其高温磨损特性[J].材料工程,2000(1):7-12.
[6]Jiang Jiaren,Stott F H,Stack M M.Some frictional features associated with the sliding wear of the nickel based alloy N80A at 250℃[J].Wear,1994,176:185.
[7]Jiang Jiaren,Stott F H,Stack M M.A mathematical model for sliding wear of metals at elevated temperatures[J].Wear,1995,181-183:20.
[8]谢梅英,刘新,王中,等.穿管机顶头的热磨损[J].钢铁研究学报,1989,9(1):34-39.