Identification welding parameters using complex criteria of quality

In the present paper,the graphical method determination of optimal welding parameters of GMAW is described.Some quality complex criteria that are the ratio of weld sizes have been proposed.These criteria allow optimizing the shape of the weld metal zone,reducing the likelihood of hot cracks formation,and reducing the stress concentration of the weld at the toe.In the proposed methodology,the earlier described equations connecting the welding parameters and the weld dimensions of mild and low-alloy steels are explored.Determination of the optimal welding parameters is carried out graphically taking into account the variance of the welding parameters.An example of using the proposed method destined to determine the optimum welding parameters is provided.It is shown that its accuracy is sufficiently good for a practical application