The work presented in this paper deals with the study of the influence of the operating parameters of welding on observables which are the geometrical characteristics of the melted zone. In this study, the method implemented is of the SMAW (Shielded metal arc welding) manual arc type and is used to assemble the pipes through the filling of a V-shaped chamfer between two tubes 1219.5 mm in diameter, 13 mm thick, and a material of grade X70 steel. In order to increase the productivity and reliability of the chamfer filling operation, we used the experimental designs method, on the one hand to estimate the effects of the operating parameters and their interactions on several functions characterizing the morphology of the weld bead, and on the other hand, to provide a mathematical model that links the welding process operating parameters to the objective functions studied.

本文提出的工作涉及焊接操作参数对可观察物的影响的研究，可观察物是熔化区的几何特征。在本研究中，所实施的方法是SMAW（屏蔽金属电弧焊）手动电弧类型，用于通过在直径为1219.5 mm，厚13 mm的两个管之间填充V形倒角来组装管。 X70级钢的材料。为了提高倒角填充操作的生产率和可靠性，我们使用了实验设计方法，一方面评估了操作参数及其相互作用对表征焊缝形态的几个功能以及对焊缝形态的影响。另一方面，