Method and system for hot wire welding
OwnerTony Lee Arndt, Roger Carl Dik +1inventors
InventorsTony Lee Arndt, Roger Carl Dik, Pellervo Johnnes Kaskinen
Life of this patent
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Abstract
A hot wire welding method and system rely upon a welding torch with a non-melting electrode, a melting metal filler wire that is fed into a weld puddle created by welding arc, a microprocessor controller for controlling (i) current of the main welding arc, (ii) filler wire feed speed, and (iii) hot wire current for heating the filler wire. The method and system also rely upon a main welding power supply for supplying the main welding arc and a secondary DC supply for supplying the hot wire current. The hot wire current is automatically controlled by the microprocessor to supply the correct amount of current to the filler wire in response to changes in wire feed speed.
Claims32
A system for hot wire welding comprising:
- a welding torch;
- means for forming a welding arc at said welding torch to provide a weld puddle;
- means for feeding a hot metal filler wire into said weld puddle at a specified speed;
- and
- means for continuously controlling a current flow for heating said filler wire in response to said specified speed of said hot wire.
A system for hot wire welding comprising:
- a welding torch;
- means for forming a welding arc at said welding torch to provide a weld puddle;
- means for feeding a hot metal filler wire into said weld puddle at a specified speed;
- means for heating said filler wire;
- and
- means (i) for controlling a current flow to said welding arc forming means, (ii) for controlling said filler wire feeding means to adjust said specified speed, and (iii) for continuously controlling said heating means to provide a current flow for heating said filler wire in response to said specified speed of said hot wire.
A method of hot wire welding comprising the steps of:
- forming a welding arc at a welding torch to provide a weld puddle;
- feeding a metal filler wire into said weld puddle at a specified speed while said filler wire is heated;
- and
- continuously controlling a current flow for heating said filler wire in response to changes in said specified speed of said filler wire.
A method of hot wire welding comprising the steps of:
- forming a welding arc at a welding torch to provide a weld puddle;
- feeding a hot metal filler wire into said weld puddle at a specified speed while said filler wire is heated;
- and
- with a digital computer (i) controlling a first current flow to said welding arc forming means, (ii) adjusting said specified speed, and (iii) continuously controlling a second current flow for heating said filler wire in response to said specified speed of said filler wire.
A computer-readable medium having stored thereon a data structure relating wire feed rates versus hot wire current at a plurality of percentage hot wire settings as shown in FIG. 10.
A system for hot wire welding comprising:
- a welding torch;
- a welding power supply for supplying power to said welding torch for forming a welding arc at said torch to provide a weld puddle;
- a filler wire supply mechanism for feeding a metal filler wire heated by electrical current into said weld puddle at a specified speed;
- and
- a controller for continuously controlling current flow for heating said filler wire in response to said specified speed of said hot wire.
A system for hot wire welding comprising:
- a welding torch;
- a first power supply supplying power to said welding arc at said torch to provide a weld puddle;
- a filler wire supply for feeding a metal filler wire heated by electrical current into said weld puddle at a specified speed;
- a second power supply for supplying said electrical current for heating said filler wire;
- and
- a controller, said controller (i) controlling a current flow from said power supply means to said welding torch, (ii) controlling said filler wire supply to adjust said specified speed, and (iii) continuously controlling said current supply to provide current flow for heating said filler wire in response to said specified speed of said hot wire.
Dependencies are inferred from the claim text.