Multiple electrode submerged arc welding method
US4214141A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1978 |
| Grant date | Jul 22, 1980 |
| Priority date | — |
| Expiry date | Dec 29, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/188
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A submerged arc welding method and more specifically, a multiple electrode welding method is disclosed wherein welding is performed by arranging electrodes in such a manner that the distance becomes at least 300 mm between a first molten pool formed by multilayer welding or by a single or plural electrodes preceding along the weld line and a subsequent molten pool formed by a single subsequent electrode or plural subsequent electrodes, as well as a submerged arc welding method which is characterized in that there is formed a slag having the components listed below on the weld metal formed by an electrode or a preceding electrode forming a preceding layer, and welding is carried out as such, without removing the slag, using an electrode or a subsequent electrode forming a subsequent layer; PA1 TiO.sub.2 : 20-65% by weight (up to 60% by weight, based on the total TiO.sub.2 amount, of which may be substituted by ZrO.sub.2); PA1 CaF.sub.2 : 9.6-40% by weight, and PA1 Al.sub.2 O.sub.3 : 10-56% by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.