IMPROVED CONSUMABLE ELECTRODE ARC WELDING

摘要

A contact tip, suitable for electric arc welding using a consumable electrod e, has a body which defines a bore through which the electrode is able to pass to enable electric current from a welding power supply to be transferred from t he body to the electrode. In part of the length of the bore between an inlet en d and an outlet end, the body has at least one region a primary contact region at which the body is adapted to enable primary electrical contact with the electrode. Along a remainder of the length of the bore, the body is adapted such that any secondary contact between the body and the electrode along the remainder part does not substantially short circuit the primary electrical contact in the primary contact region of the bore.