Tig wire feeder is composed of print motor, double driven wire feeding mechanism, wire spool shaft with adjustable damping force and rotat-able argon torch holder. It is compatible with all kinds of argon welding machine and torch for the purpose of filling wire automatically,steadily and slowly.It provides step-less adjustment of the wire feeding speed,wire anti-sticking and automatic backdraw. The users could use the wire feeder easily and fix the welding position accurately to realize difficult brazing or spot welding. Perfect automatic TIG welding can be achieved in cooperation with traveling tractor or specialized tooling