Method and apparatus for arc welding with wire heat control
A method and apparatus for controlled short circuit welding includes providing welding-type power and controlling the welding-type power to be controlled short circuit power. A user selectable heat control input is received and the heat content of a drop, each drop, or a plurality of drops is adjusted in response thereto.
1. A controlled short circuit welding-type power supply comprising:
a source of welding-type power having a control input;
a controlled short circuit controller, having a control output connected to the control input, and including a heat control module having a heat control input, and responsive to the heat control input and to a signal, accumulated over a plurality of welding cycles, indicative of resistive heat provided to a drop; and
a user selectable input connected to the heat control input.
2. The welding-type power supply of claim 1 , wherein the heat control module further includes a comparator responsive to the signal indicative of resistive heat and the heat control input.
3. The welding-type power supply of claim 2 , wherein the heat control module further includes a threshold module, that receives a signal indicative of a baseline threshold and the heat control input, and provides a threshold to the comparator.
4. The welding-type power supply of claim 2 , wherein the heat control module is comprised of digital circuitry.
5. The welding-type power supply of claim 2 , wherein the heat control module is comprised of analog circuitry.
6. The welding-type power supply of claim 2 , wherein the heat control module is implemented with software.
7. The welding-type power supply of claim 1 , wherein the source of welding-type power includes an inverter.
8. The welding-type power supply of claim 1 , wherein the source of welding-type power includes a converter.
9. The welding-type power supply of claim 1 , wherein the source of welding-type power includes an output bypass switch.
10. A method of controlled short circuit welding: comprising:
providing welding-type power;
controlling the welding-type power to be controlled short circuit power;
receiving a user selectable heat control input; and
adjusting the heat content of each drop in response to the user selectable heat control input and a signal, accumulated over a plurality of welding cycles, indicative of resistive heat provided to a drop.
11. The method of claim 10 , wherein adjusting includes comparing the signal indicative of resistive heat and a signal responsive to the heat control input.
12. The method of claim 10 , wherein adjusting further includes receiving a signal indicative of a baseline threshold and the heat control input and providing a threshold responsive thereto.
13. The method of claim 10 , wherein controlling includes switching an inverter.
14. The method of claim 10 , wherein controlling includes switching a converter.
15. The method of claim 10 , wherein controlling includes switching an output bypass switch.
16. A method of controlled short circuit welding, comprising:
providing welding-type power;
controlling the welding-type power to be controlled short circuit power;
receiving a user selectable heat control input; and
adjusting the heat content of a plurality of drops in response to the user selectable heat control input and in response to a plurality of signals, accumulated over a plurality of cycles, indicative of resistive heat provided to each of the plurality of drops.
17. A controlled short circuit welding-type power supply comprising:
a power means for providing welding-type power;
control means for controlling the power means to provide a controlled short circuit output, connected to the power means;
heat means for controlling the heat of each drop in response to a signal, accumulated over a plurality of welding cycles, indicative of resistive heat provided to each a drop, connected to the control means; and
user selectable input means for setting a desired heat content, connected to the heat means.
18. The welding-type power supply of claim 17 , wherein the heat means includes a means for providing a signal responsive to a comparison of the signal indicative of resistive heat and the heat control input.
19. A system for controlled short circuit welding: comprising:
means for providing welding-type power;
means for controlling the welding-type power to provide controlled short circuit power, connected to the means for providing;
means for receiving a user selectable heat control input, connected to the means for controlling; and
means for adjusting the heat content of each drop in response to the user selectable heat control input and in response to a signal, accumulated over a plurality of welding cycles, indicative of resistive heat provided to each drop, connected to the means for receiving and the means for controlling.
20. The system of claim 19 , wherein the means for adjusting includes means for comparing the signal indicative of resistive heat and a signal responsive to the heat control input.
21. The system of claim 20 , wherein the means for adjusting further includes means for a receiving a signal indicative of a baseline threshold and the heat control input and for providing a threshold responsive thereto.
22. A system of controlled short circuit welding: comprising:
means for providing welding-type power;
means for controlling the welding-type power to be controlled short circuit power, connected to the means for providing;
means for receiving a user selectable heat control input, connected to the means for controlling; and
means for adjusting the heat content of a plurality of drops in response to the user selectable heat control input and in response to a signal, accumulated over a plurality of cycles, indicative of resistive heat provided to each of the plurality of drops, connected to the means for receiving.