Process for manufacturing clad metal tubing
US5056209A · kind A · utility
36Cited by
5References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1989 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | Dec 8, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49936
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for manufacturing clad metal tubing from two different types of metals having different deformation resistances is disclosed. The process comprises preparing a combined billet having two blank pipes arranged concentrically with each other, the pipes being made of different metals, and applying hot extrusion to the billet while adjusting the heating temperature of the pipe such that a pipe of the metal having a higher deformation resistance is heated to a higher temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.