Continuous extrusion apparatus
US6988389B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 10, 2005 |
| Grant date | Jan 24, 2006 |
| Priority date | — |
| Expiry date | Aug 10, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21C29/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Die heater body assembly for continuous extrusion apparatus includes a die block of non-magnetic material for the extrusion of copper tube and a bucket portion forming a sliding fit in a die heater body. The die heater body includes a coil of copper tubing in a ceramic support material provided with electric power and cooling water connections to heat the bucket portion by electrical induction to a temperature of approximately 700° Celsius. To concentrate the electric induction heating effect at the bucket portion low reluctance magnetic members and magnetic material end blocks direct eddy current flow toward the bucket portion. Weakening of the shoe as a consequence of provided the heating is limited.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.