PRESSURE-CONTACT WELDING TIP Russian patent published in 1998 - IPC

FIELD: arc welding. SUBSTANCE: wire duct is made in center of tip. The latter has body and head joined together for separation by means of screw or bell-and-spigot joint. Tip body is made of brass, aluminum, chromate copper, zirconium copper, zirconium-chromate copper, or phosphorous bronze; tip head is made of copper, chromate copper, zirconium-chromate copper, zirconium copper, tungsten-silver alloy, tungsten-copper alloy, dispersed aluminum oxide copper, beryllium bronze, or nickel-beryllium bronze. Preferable material for tip body is brass and for head, chromate copper or zirconium-chromate copper. Diameter of wire duct in tip body is 1.03-1.25 of wire diameter which facilitates wire insertion, provides for reliable electric contact, prevents deviation from point of welding. EFFECT: enlarged service life, reduced cost, and improved reliability of tip. 7 cl, 7 dwg