| 摘要: |
| 建立了一种基于试验的非线性曲线拟合的新方法来分析焊接温度场。采用改进的温度场数学解析模型后,拟合得到与实测结果相当接近的温度-时间拟合曲线方程。根据不同条件下的拟合方程,对其回归系数进行了影响因素的分析。并考虑实际需要,得到了不同初始温度下全焊接阀体的密封圈安全位置范围,为阀门焊接工艺的制定提供了重要依据。 |
| 关键词: 全焊接阀门 温度场 曲线拟合 |
| DOI： |
| 分类号: |
| 基金项目: |
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| Fitting analysis on welding temperature field of fully welded valve |
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PANG Fang-jie1, XU Ji-jin1, CHEN Li-gong1, ZHANG Min2
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1.School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200030, China;2.Shanghai Neles-Jamesbury Ltd, Shanghai 200092, China
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| Abstract: |
| Welding temperature field was analyzed by using non-linear curve fit method based on experiments.The fitting temperature-time equation was obtained from actual data with an improved mathematic model.From different fitting equations under different conditions,regression coefficients were also analyzed.Considering the actual need,the location range of the sealing loop was acquired. |
| Key words: fully welded valve welding temperature field non-linear curve fit |
