Method of manufacturing a heat exchanger steel
US4022050A · kind A · utility
13Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1975 |
| Grant date | May 10, 1977 |
| Priority date | — |
| Expiry date | Dec 4, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49373
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of making a heat exchanger sheet is disclosed including progressively forming an elongated flat sheet of metal into a continuously corrugated sheet having a plurality of deeply drawn convolutions which extend across the sheet, and compressing the periphery of the corrugated sheet to provide a substantially flattened edge portion while retaining a centrally disposed corrugated portion with minimal cold working thereof. Preferably, the sheet made thereby has convolutions with slightly sloping walls to better provide a geometrically uniform overlapped pattern in the flattened edge portion thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.