| 球墨铸铁曲轴的气体软氮化 |
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| 引用本文： | 方涛平,方彩娟,孙建章.球墨铸铁曲轴的气体软氮化[J].电工标准与质量,1988(3). |
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| 作者姓名： | 方涛平 方彩娟 孙建章 |
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| 作者单位： | 长沙水电师院，济南职业大学，济南职业大学 |
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| 摘 要： | 柴油机的珠量铸铁曲轴系重要零件,气体软氮化应用到球墨铸铁领域还是一种新工艺,而且比中坝淬火效果好,提高了曲轴的抗疲劳和抗磨损的能力。本文对气体软氮化的基本原理、设备、工艺参数的选择和催渗方法进行了探讨,对软氮化后曲轴的尺寸形状误差、光洁度和机械性能的提高等进行了较详细的试验、分析和比较,结果,经气体软氮化后的曲轴不但尺寸形站误差符合图纸要求外,而且抛去轻微氧化层后光洁度还略有提高,曲轴安全系数由1.3～1.6提高到1.70～1.77,并且一般不再发生疲劳断面 ,使用寿命比原来寿命增加3.33倍以上。
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| 关 键 词： | 气体软氮化 催渗 软氮化层 |
GASEOUS CARBON-NITRIDING OF DUCTILE-IRON CRANKSHAFT |
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| Fang Taoping.GASEOUS CARBON-NITRIDING OF DUCTILE-IRON CRANKSHAFT[J].Journal of Changsha University of Electric Power(Natural Science Edition),1988(3). |
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| Authors: | Fang Taoping |
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| Affiliation: | Fang Taoping (Changsha Normal University of Water Resources and Electric Power) Fang Caijuan Sun Jianzhang (Jinan Vocational College) |
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| Abstract: | The ductile-iron crankshaft is an important part of a diesel. In manufacturing the crankshaft, using the technique of gaseous carbon-nitriding is more beneficial than that of medium frequency ternper. This paper deals with the basic theory of gaseous carbon-nitriding, the equipment needed, the choice of technique parameters and the method of temper-accelerating. In the paper, it is stated that the crankshaft is tested after being cafbon-nitrided. Also in the paper, the improvement of mechanical effect is analysed and compared with that using the technique of medium frequency temper and the dimensional errors are compared and analysed. |
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| Keywords: | gaseous carbon-nitriding temper-accelerating skin coat produced in the dry cyanide process under the eutectoid transition temperature |
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