Explosion-welded pipe joint
US4981250A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 5, 1989 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Sep 5, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K20/085
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method of producing explosion-welded joints between the pipe or pipe lines. By carefully evaluating and testing the configuration of the ends of the pipes to be joined and also the functioning of the charge system, together with a system for encapsulating the charge and for determining the position of the charge during a welding sequence, it has been possible to provide a practical and reproduceable system which escapes the drawbacks of partial and poor weld bonds, cold-work hardening of the pipe material, and surface damage encountered with known systems of this kind. The method has been applied and tested on ferritic stainless material, so-called Duplex material, and on all carbon steel grades used in the production of pipe lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.