Process for beam-welding two members different in hardness
US6441335B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 2000 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Dec 5, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/803
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In welding joint surfaces of a high-hardness member and a low-hardness member to each other by use of a laser beam or an electron beam, the point of irradiation of the laser beam or electron beam is offset from the joint surfaces of the high-hardness member and the low-hardness member toward the low-hardness member by a predetermined distance, such that the melting provided by the beam is caused to spread from the low-hardness member to the high-hardness member. Thus, even if the two members different in hardness from each other are welded together by use. of the laser beam or electron beam, it is possible to avoid a poor weld, which would otherwise cause a cracking in the high-hardness member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.