| 加热对EPS模温度场分布及膨胀力传递的影响 |
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| 引用本文： | 米国发,浮红霞,王狂飞,刘翔宇,贾宝仟.加热对EPS模温度场分布及膨胀力传递的影响[J].铸造,2008,57(1):40-44. |
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| 作者姓名： | 米国发 浮红霞 王狂飞 刘翔宇 贾宝仟 |
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| 作者单位： | 1. 河南理工大学材料科学与工程学院,河南,焦作,454000
2. 哈尔滨工业大学材料学院,黑龙江哈尔滨,150001 |
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| 基金项目： | 河南省高校杰出科研创新人才工程项目 |
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| 摘 要： | 针对EPSN瓷壳型精铸失模时容易裂壳的现象，对EPS消失模精密铸造工艺进行研究后，建立了EPS模温度场分布模型，考察了加热对EPS模温度分布的影响。利用流变学原理建立了失模时EPS模的粘弹性模型，分析了失模时EPS模的粘弹性行为及力传递过程。利用单泡孔模型考察了EPS模中聚苯乙烯应力松弛现象对作用在型壳上膨胀力的影响，并推导出膨胀力表达式。
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| 关 键 词： | EPS模精密铸造 失模 温度场 膨胀力 加热 温度场 温度分布 力传递 影响 Pattern Transferring Force Compression Temperature Distribution Heating 表达式 膨胀力 作用 松弛现象 应力 聚苯乙烯 孔模型 单泡 传递过程 |
| 文章编号： | 1001-4977（2008）01-0040-05 |
| 收稿时间： | 2007-09-24 |
| 修稿时间： | 2007年9月24日 |
Influence of Heating on Temperature Distribution and Compression Force Transferring of EPS Pattern |
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| MI Guo-fa,FU Hong-xia,WANG Kuang-fei,LIU Xiang-yu,JIA Bao-qian.Influence of Heating on Temperature Distribution and Compression Force Transferring of EPS Pattern[J].Foundry,2008,57(1):40-44. |
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| Authors: | MI Guo-fa FU Hong-xia WANG Kuang-fei LIU Xiang-yu JIA Bao-qian |
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| Abstract: | Aiming at the problem of the ceramic shell cracking, the pattern removing technique of EPS pattern was presented. The model of temperature field in EPS pattern was proposed, by which the influence of heating on the temperature distribution was analyzed. The viscoelastic model was created on the basis of rheological theory, and the viscoelastic character of EPS pattern as well as the transferring of compression force during the pattern removing process were discussed. The effect of stress relaxation of polystyrene on the compression force acting on the shell was investigated, and the expression of compression force was deduced. |
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| Keywords: | EPS pattern precision casting pattern removing temperature field compression force |
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