Roll through billet heater
US4125365A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 1977 |
| Grant date | Nov 14, 1978 |
| Priority date | — |
| Expiry date | Apr 7, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27M2001/1556
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An apparatus for heating billets and the like prior to hot extrusion is disclosed. The apparatus includes an elongated, insulated tunnel having an inlet opening and an outlet opening. A conveyor extends through the tunnel from the inlet to the outlet and conveys a plurality of equally spaced, transversely arranged billets in a step-like manner. The conveyor rotates the billets as they are conveyed through the tunnel. A source of high temperature air is connected to a plenum positioned above the conveyor. High temperature air is discharged from the plenum through a plurality of slot-like jets positioned above the billets so that the air directly impinges on the billets. Temperature probes are included for insuring that the billets are biased to one side of the conveyor upon discharge and for sensing the billet temperature to control the air temperature within the tunnel. An unloader is provided for receiving the billets discharged from the tunnel and rotating them through an angle of 90.degree. and to a position for transfer to an extrusion press.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.