DSC-Based All-Digital SiC Inversion Type Multi-Function Argon Arc Welding Power Supply
US-2018345400-A1 · Dec 6, 2018 · US
Welding type power supply for TIG starts
US10556289B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10556289-B2 |
| Application number | US-201414535917-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 7, 2014 |
| Priority date | Nov 7, 2014 |
| Publication date | Feb 11, 2020 |
| Grant date | Feb 11, 2020 |
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- Title
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Abstract
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A method and apparatus for TIG welding and starting a TIG welding process includes limiting the pulse width of a power circuit when a TIG start is being performed, and monitoring for the creation of a welding arc. After the welding arc has been detected the limiting of the pulse width is ended.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of starting a TIG welding process, comprising: limiting the pulse width of a power circuit to be less than a desired magnitude when a TIG start is being performed; monitoring for the creation of a welding arc; and ending limiting the pulse width after the welding arc has been detected. 2. The method of claim 1 , further comprising delaying ending limiting the pulse width after the welding arc has been detected. 3. The method of claim 1 , further comprising delaying ending limiting the pulse width after the welding arc has been detected for a fixed period of time. 4. The method of claim 1 , further comprising delaying ending limiting the pulse width after the welding arc has been detected for at least one millisecond. 5. The method of claim 2 , further comprising providing a closed loop control after ending limiting of the pulse width. 6. The method of claim 5 , wherein limiting the pulse width includes providing an output voltage of about 10 volts. 7. The method of claim 6 , wherein limiting the pulse width of a power circuit is done when a TIG scratch start is being performed. 8. The method of claim 1 , wherein monitoring includes monitoring the output voltage. 9. The method of claim 1 , wherein monitoring includes monitoring the output current.
Assignees
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Classifications
Arrangements or circuits for arc welding with pulsed current or voltage · CPC title
- B23K9/067Primary
Starting the arc · CPC title
and of a non-consumable electrode · CPC title
Reduction of the arc voltage beneath the arc striking value, e.g. to zero voltage, during non-welding periods · CPC title
characterised by the shape of the pulses produced · CPC title
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- What does patent US10556289B2 cover?
- A method and apparatus for TIG welding and starting a TIG welding process includes limiting the pulse width of a power circuit when a TIG start is being performed, and monitoring for the creation of a welding arc. After the welding arc has been detected the limiting of the pulse width is ended.
- Who is the assignee on this patent?
- Illinois Tool Works
- What technology area does this patent fall under?
- Primary CPC classification B23K9/067. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Feb 11 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).