| 膜沸腾阶段对竖直淬火件轴向硬度的影响 |
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| 引用本文： | 李芳,罗新民,李殿凯.膜沸腾阶段对竖直淬火件轴向硬度的影响[J].兵器材料科学与工程,2005,28(2):57-59. |
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| 作者姓名： | 李芳 罗新民 李殿凯 |
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| 作者单位： | 1. 江苏大学,材料学院,江苏,镇江,212013
2. 安徽工业大学,材料学院,安徽,马鞍山,243002 |
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| 摘 要： | 以传热学理论为基础,对轴类工件竖直淬火时膜沸腾阶段的传热情况进行分析,分析了工件表面蒸汽膜厚度的分布情况和传热系数的相应变化。对试验中所观察到的工件表面由底部向顶部逐渐润湿的现象,以及淬火后工件产生轴向硬度梯度的原因进行了解释。
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| 关 键 词： | 膜沸腾 润湿 轴向硬度 传热 |
| 文章编号： | 1004-244X(2005)02-0057-03 |
| 修稿时间： | 2004年7月28日 |
Contribution of film boiling to axial hardness of hardened workpiece |
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| LI Fang,LUO Xin-min,LI Dian-kai.Contribution of film boiling to axial hardness of hardened workpiece[J].Ordnance Material Science and Engineering,2005,28(2):57-59. |
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| Authors: | LI Fang LUO Xin-min LI Dian-kai |
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| Abstract: | On the basis of heat transfer theory, this paper analyzes heat transfer process in film boiling stage when axial workpiece is quenched vertically and distribution of steam film thickness as well as corresponding variation of heat - transfer coefficient. The reasons why surface of workpiece is moistened from bottom to top in quenching and axial hardness gradient is generated after quenching are also given in this paper. |
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| Keywords: | film boiling moisten axial hardness heat transfer |
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