| 张立文,朱德才,邢磊,张国梁,韦荣选.铝合金与5CrMnMo模具钢界面接触换热系数实验研究[J].,2009,(1):60-64 |
| 铝合金与5CrMnMo模具钢界面接触换热系数实验研究 |
| Experimental measurement on thermal contact conductance coefficient between aluminum alloys and 5CrMnMo die steel |
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| DOI：10.7511/dllgxb200901012 |
| 中文关键词: 接触换热系数 铝合金 5CrMnMo |
| 英文关键词: thermal contact conductance (TCC) coefficient aluminum alloy 5CrMnMo |
| 基金项目:国家“九七三”资助项目. |
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| 中文摘要: |
| 利用自制的接触换热系数测量装置对铸造铝合金和挤压铝合金分别与5CrMnMo模具钢的接触换热系数进行了实验研究．分析了铝合金与5CrMnMo模具钢间的接触换热系数随接触表面温度和载荷的变化，发现接触换热系数与温度并不存在简单的正比关系，而与载荷的指数近似成正比关系，并且在相同的接触条件和测量条件下铸造铝合金与5CrMnMo的接触换热系数普遍要比挤压铝合金的小． |
| 英文摘要: |
| A set of self-developed thermal contact conductance (TCC) coefficient experimental system was employed in the experiments on the TCC coefficient between cast aluminum and 5CrMnMo die steel, and between extruded aluminum alloy and 5CrMnMo die steel. The changing tendency of TCC coefficient, in accordance with interfacial temperature and contact pressure between aluminum alloy and 5CrMnMo die steel is analyzed. It is found that TCC coefficient is not directly in proportion to interfacial temperature, but is roughly in proportion to contact pressure index. Besides, when they are in the same contact condition and measuring condition, the TCC coefficient between cast aluminum and 5CrMnMo die steel is generally smaller than that of the extruded aluminum alloy. |
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