Estimation of cooling rate in the welding of plates with intermediate thickness
Estimation of cooling rate in the welding of plates with intermediate thickness
复制标题
中等厚度板材焊接冷却速率的估算
DOI：
--
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
D. Ivey
中科院分区：
文献类型：
--
作者：
K. Poorhaydari;B. M. Patchett;D. Ivey
提出了一种新的估算焊接截面实际冷却速度的方法。该方法是基于应用加权因子的罗森塔尔分析解决方案的厚和薄板。该系数由热影响区（HAZ）宽度确定，从蚀刻截面获得，并反映了板对热流条件的实际响应。文献中以前的公式是基于薄板或厚板条件的假设，而大多数实际条件介于这两个极端之间。有限的实验测量的冷却速率，进行了仪表焊接，显示出良好的一致性与预测值。该模型进一步用于预测整个热影响区的峰值温度分布。
An innovative method for estimating the actual cooling rate in a welded section is presented. The method is based on applying a weighting factor to the Rosenthal analytical solutions for thick and thin plates. The factor is determined from the heat-affected zone (HAZ) width, obtained from etched sections, and reflects the actual response of the plate to the heat flow condition. Previous formulations in the literature are based on the assumption of either thin-plate or thick-plate conditions, while most actual conditions lie somewhere between the two extremes. Limited experimental measurements of cooling rate, carried out by instrumented welding, showed good agreement with predicted values. The model was further used to predict the peak temperature profile across the HAZ.