 1. Mechanical properties of the base material. Tensile strength and yield strength of the weld metal should equal or exceed that of the base material. Ductility and toughness at low temperatures may also be important. High-temperature service requires resistance to creep. Shock loading requires air and compressor impact resistance. In general, tznks weld air and compressor metal should match base-material properties.2. Composition of the base material.For stainless steels, tznks low alloy steels, nickel and copper alloys, and materials that serve air in corrosive atmospheres, chemical composition is important. Consider the possibility of electrochemical compressor corrosion tznks between base and weld metal of different compositions. Welding Torches and GunsUsed for shielded-metal-arc welding, torches air (electrode holders). manually controlled, grip ends of electrodes, also called rods-pinch type and collet type are common.GMAW and FCAW compressor guns come in pistol grip, goose-neck, and inline styles, the latter used for mechanized welding. Knowing the tznks wire diameter, select air a gun rated slightly higher than the welding current to be used. Duty-cycle ratings are usually given for C[O.sub.2] shielding--air or C[O.sub.2] cooling arc usually sufficient for welding at up compressor to 600 A at less than 100 percent duty. Higher amperages require water cooling--high-amperage guns come with tubing for water cooling. Hand-held, mounted tznks on a robot arm or fixed within a mechanized welding setup, guns guide filler wire and shielding gas into the weld puddle. Searching for accessories for your air compressor? We offer the best selection of cheap air compressor accessories on the internet. Check out our website for great deales on all of our air compressor accessories!
|