Title:
【発明の名称】加熱装置及び加熱方法
Document Type and Number:
Japanese Patent JP2003523497
Kind Code:
A
Abstract:
The present invention is for a method for heating of blanks and other heating of metallic materials in a furnace before working where heat is transferred to a blank in the furnace by radiation. According to the method of the invention an important part of the radiation hits the walls of the furnace and are reflected there before it is transferred to the blank. Preferably the furnace is designed so that heat radiation is reflected also at the bottom of the furnace. At least 50% of the radiation which reaches the blank ought to be reflected radiation. The invention is also for a furnace for beating of blanks and other comprising at least one furnace bottom part (1) and at least one furnace top part (4) having side walls (5, 6, 7, 8) where at least parts of the side walls of the top parts are inclined so that opposite walls are inclined towards each other.
Inventors:
Sandsberg, Mats
Johansson, Lars-Guerlain
Johansson, Helena
Anderson, Yang
Johansson, Lars-Guerlain
Johansson, Helena
Anderson, Yang
Application Number:
JP2001560610A
Publication Date:
August 05, 2003
Filing Date:
February 06, 2001
Export Citation:
Assignee:
Cantar Activolag
International Classes:
C21D9/00; C21D1/34; F27B3/16; F27B3/20; F27B17/00; F27D11/02; F27D99/00; (IPC1-7): F27B3/16; C21D9/00; F27B3/20; F27D11/02
Domestic Patent References:
| JPS5569606U | 1980-05-13 | |||
| JPS5819486U | 1983-02-05 |
Attorney, Agent or Firm:
Shigeru Yagita (2 outside)