Profile: Invacua Ltd. specializes in sub contract precision welding and brazing services. Induction brazing in vacuum produces joints equal in integrity to that of vacuum furnace brazing. Heat is localised to the joint area which means that the process does not anneal the whole assembly, this is useful where it is desirable to retain as far as is possible the wrought properties of the parent materials. The brazement can be observed throughout the thermal cycle so very close control of the process is possible. Precision pulsed TIG welding is ideal for joining small components that are heat sensitive and require a joint that is hermetic and mechanically sound.