Method and a system for starting and stopping a hot wire system

摘要

A method and a system (100) for starting and / or stopping of a hot wire (140) - process. A hot wire system contains a filler wire feeding device (180), which comprises: a contact tube (160) for holding a cored wire (140), a wire supply mechanism, a power supply (130, 170) for applying a heating current to the wire; and a control unit (180) which, with the feed mechanism and the power supply (130, 170) is coupled. The control unit (180) is configured for this purpose, the heating current to the wire (140) to control and the wire (140) with respect to the workpiece (115) to be positioned by means of an electric arc, a melting said pool (116, 117) to form, in order to obtain a hot wire process (280, 380) to initiate. The control unit (180) may further be configured for this purpose, the supply of the wire (140) to the enamel said pool (116, 117) and to regulate the current to the wire (140) so as to control and / or to pulsation, that the wire (140) in a stable manner from the melt said pool (116, 117) is pulled when the hot wire process is stopped (280, 380).