Research on Design of Narrow Gap TIG Welding Torch

To satisfy the needs of large-thick walled connectiong in Chinese industry,the narrow gap welding torch was designed.this narrow gap welding torch was used to carry out process experiment.While the welding-current is 250A,the welding-velocity is 0.36m/min,the feeding wire velocity is 0.96m/min and the rate of the protecting gas is 35L/min,the welding seams are perfect without defects.