Method of build up welding to thin-walled portion
US6991150B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 29, 2003 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | Dec 26, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49318
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A recess formed in close contact with a thin-walled portion 3a of a workpiece to store molten metal at a surfaced portion, a jig 4 manufactured from a material with a higher heat-resisting temperature than that of the molten metal and a satisfactorily large heat capacity, a step (A) wherein the jig is installed on the workpiece, a preheating step (B) in which the workpiece and the jig are preheated to a predetermined temperature under the condition that jig 4 is installed, a build up welding step (C) for build up welding the thin-walled portion of the workpiece and forming weld beads at surfaced portion, and a jig-removing step (D) for removing the jig after weld beads solidify completely.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.