Filler metal for welding sintered materials
US5296677A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1992 |
| Grant date | Mar 22, 1994 |
| Priority date | — |
| Expiry date | Feb 26, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K35/3086
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Disclosed herein is a filler metal for joining (mainly by high energy density beam welding) a part of porous sintered material to a part of the same material or steel, which gives rise to a weld zone free of such defects as cold cracking and blowholes. The filler metal contains, by weight, at least one selected from the group consisting of Cr, Mo, and Si and at least one selected from the group consisting of Ni, C, and Mn in an amount specified by the equations below EQU Y .gtoreq.-(1/3)X +23 and Y .gtoreq.12 where PA1 X =Cr(%) +Mo(%) +1.5 Si(%) PA1 Y =1.2 Ni(%) +20 C(%) +0.8 Mn(%) and at least one selected from the group consisting of Al, Ti, Zr, and V in a total amount of 0.3-5%, with the balance being Fe and inevitable impurities. The filler metal may be in the form of solid wire or cored wire. The filler metal for arc welding has a composition defined by Y .gtoreq.-(1/3)X +18 and Y .gtoreq.7.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.