焊接熔池的数学模型及焊接工艺参数的在线最优化

MATHEMATICAL MODEL OF MOLTIEN POOL AND ON-LINE OPTIMIZATION OF WELDING PARAMETERS

关键词:  焊接熔池  数学模型  参数

Key words:  Welding pool  Mathematical model  Parameter

摘要:

用数学模型方法进行焊接过程的计算和预测,关键是选取合适的计算模型和模型参数。本文介绍了一种用红外测温,对所建立的熔池数学模型参数进行修正的方法。结果表明,修正后的模型基本反映了熔池形成的规律。在此基础上,就所给的焊道尺寸要求值进行了焊接工艺参数优化,取得了较为满意的结果。

Abstract:

The key to a successful calculation and prediction of welding process by mathematical model method is the selecting of an appropriate model and its parameters. This paper introduccs an infra-red means employed to identify the mathematical model parameters of molten pool. The results, of experiments show the identified model essentiall represents the way of molten pool forming. The welding parameters selected on the basis of the model may give fairly satisfactory results in the requisite pool. size.