Method and apparatus for wire drawing
US5189897A · kind A · utility
7Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1991 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Oct 15, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21C1/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for drawing steel wire to produce high tensile strength, steel wire with increased torsional ductility. The wire is drawn through a plurality of standard dies (14) in a wire drawing machine (10). The cross section of the wire is reduced by a constant reduction of about 15% to about 18% at each of the standard dies (14) with the exception of the final two dies (18, 19). The wire is then reduced by about 10% to about 90% of the typical reduction at the next to last die (18) and the remainder of the reduction at the final die (19).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.