Method and system for submerged arc welding
US11135670B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2018 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Oct 23, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/124
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A submerged arc welding apparatus includes a first wire feeder feeding a first hot wire towards a work piece; a first contact tube transferring current to the first hot wire for arc generation to create a weld puddle; a second wire feeder feeding a cold wire at a variable feed speed towards the weld puddle; one or more sensors configured to continuously measure, during a welding phase, at least a first active welding parameter related to at least the first hot wire; and a control unit. The control unit is configured to determine different target values for the variable feed speed of the cold wire based on different values of the at least a first active welding parameter such that a different target value for the variable feed speed of the cold wire is determined according to a different value of the at least a first active welding parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.