The invention discloses a narrow-gap TIG
welding gun. The narrow-gap TIG
welding gun is different from the traditional
welding gun, a left air cover and a right air cover are arranged on the two sidesof a welding gun main body correspondingly, due to the fact that the direction is perpendicular to the width direction, the size limit is small, and a large protection space can be achieved; and thedouble-air-cover design is adopted, so that the
argon protection effect is also improved. The welding gun main body is internally provided with a cooling structure; and two insulating blocks for separating the welding gun main body from the left air cover and separating the welding gun main body from the right air cover correspondingly are arranged, so that the air covers can be prevented from being electrified, an electrified area can be reduced to the minimum, a
ceramic insulation layer does not need to be sprayed on the surface of the whole welding gun, and the situation that the width of the welding gun is increased is avoided. In general, the welding gun has the advantages that the high stability of a traditional TIG welding arc is maintained, the
layout is compact, the welding gun and the
water cooling are integrated into a whole, the welding gun can be integrally installed on an automatic welding
machine, a groove gap can be greatly reduced, so that a lot of welding materials and
electric energy consumption are saved, and the welding productivity is improved.