Method for producing a ring support with a sheet metal cooling channel welded thereon
US7003878B2 · kind B2 · utility
0Cited by
4References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2001 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Dec 19, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49995
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a method for producing a ring support (1) with a sheet metal cooling channel welded thereon (5), which is transfused later with an aluminium melt for producing a piston. The aim of the invention is to improve the production of openings (4) for supplying and removing oil. Said openings are produced even before the transfusion of the cooled ring support. When the alfin pretreament of the cooling ring supports occurs, said cooling channel is filled with melt and emptied again during removal front the alfin bath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.