Extrusion die pre-heating device and method
US9975275B2 · kind B2 · utility
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2References
21Claims
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Key dates
| Filing date | Jun 20, 2013 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Sep 25, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21C29/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of pre-heating an extrusion die comprises heating an extrusion die using a first group of heating elements and a second group of heating elements; and then heating the extrusion die using only the first group of heating elements to bring the extrusion die to a desired pre-heat temperature, or heating the extrusion die using the first and second groups of heating elements, the second group of heating elements being operated at reduced power, to bring the extrusion die to a desired pre-heat temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.