Systems, methods, and apparatus to preheat welding wire
US10675699B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2016 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Feb 8, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/24
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A contact tip assembly with a preheating tip comprises a welding power source configured to provide welding current to a welding circuit, the welding circuit comprising a welding electrode and a first contact tip of a welding torch. The assembly also includes an electrode preheating circuit configured to provide preheating current through a portion of the welding electrode via a second contact tip of the welding torch, and a voltage sense circuit to monitor a voltage drop across the two contact tips, and the electrode preheating circuit adjusts at least one of the first current or the preheating current based on the voltage drop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.