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。
Welding temperature field was analyzed by using nonlinear 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.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2005年第9期73-76,共4页
Transactions of The China Welding Institution
关键词
全焊接阀门
温度场
曲线拟合
Curve fitting
Mathematical models
Temperature distribution