CO2 globular transfer
US9662736B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 2013 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Jun 15, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/173
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention described herein generally pertains to a system and method for generating a negative polarity welding output current waveform to control a welding process. An electric arc welding system generates an electric welding waveform with portions in a negative polarity. A cycle of the electric welding waveform includes a background current phase, a short clearing ramp phase after the background current phase, a peak current phase, and a tail-out current phase of the electric welding waveform, wherein the peak current phase provides a negative peak current level, the tail-out current phase provides a monotonically increasing tail-out current level toward the positive background current level, and the short clearing ramp phase provides a decreasing current level in a positive polarity of current for the electric welding waveform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.