Warm form cooling and heat recovery tunnel
US4022570A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 1976 |
| Grant date | May 10, 1977 |
| Priority date | — |
| Expiry date | May 5, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27M2001/1552
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heat transfer apparatus for controlling the temperature of a formed workpiece is provided. The apparatus is in the form of a multi-tier rotary preheat, quench and heat recovery tunnel which provides for transfer of heat between tiers from workpieces to be cooled to workpieces to be heated, thereby conserving heat energy. Transfer of heat is accomplished by means of fans interconnected with the tier levels of the tunnel. A control system ensures proper temperature of air, passing through a hot-air fan, which is removed from a second level and transferred to a first level. Means are provided for loading slugs to be preheated prior to forming onto a first annular tray on the first level and for removing same after it has completed a single rotation about the cooling tunnel. After being further heated in an induction furnace, the slug is warm formed in a press to a desired configuration. The shaped workpiece is then transferred to the tunnel and loaded onto a second tier on a second level, below the first level. As the workpiece on the second tier completes a single rotation in a direction counter to the direction of rotation on the first tier, heat is transferred using circulated ai…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.