Method and apparatus producing drawn copper wire from an electrical seam welder
US4820896A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1985 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Apr 23, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K11/309
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The copper wires employed for electrical resistance seam welding of tinned sheet metal with the help of wire electrodes until now had to be taken back to the smelter as old metal after a few applications. The additional operating costs associated with this were until now unavoidable for long seam resistance welding of tinned sheet metal since multiple uses or applications of the copper wire for resistance seam welding have proven to be impossible in spite of years of research. The problem of these additional operating costs can be solved such that new copper wires with a reduced diameter can be directly drawn from the copper wire employed as wire electrodes for resistance seam welding after their use in welding. These wires then, for example, can be used as signal conductors or as windings. The properties of these wires are totally in accord with copper wires that are directly drawn from new copper. By this process, the additional operating costs mentioned above are substantially reduced and in many cases are even totally eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.