Title:
複層熱処理炉、熱処理装置、及び熱処理方法
Document Type and Number:
Japanese Patent JP4699605
Kind Code:
B2
Abstract:
There is provided a heat treatment unit which uses a multi-layered heat treatment furnace (1) comprising a layer of fluidized bed (2) composed of particles and another layer of atmosphere layer (3) composed of gases, the former being excellent in thermal efficiency and uniformity of heat distribution and the latter being positioned in the free board section over the fluidized bed (2), in which these layers operate at temperature levels different from each other, and the work piece is heat-treated by being partly immersed in the fluidized bed (2) having a given temperature with the other part being exposed in the atmosphere layer (3) also operating at a given temperature, according to desired mechanical properties of the work piece at each position. This heat treatment unit is improved from the conventional one in that it can give desired mechanical properties which are required by each part of metallic work requires without increasing the investment cost.
Inventors:
Takayuki Sakai
Application Number:
JP2000397093A
Publication Date:
June 15, 2011
Filing Date:
December 27, 2000
Export Citation:
Assignee:
Asahi Tech Co., Ltd.
International Classes:
F27B15/02; C21D1/53; C21D9/34; C22F1/00; C22F1/04; C22F1/043; F27B15/00; F27B15/10; F27B15/18; F27D17/00; F27D19/00; F27D99/00
Domestic Patent References:
| JP64002645B1 | ||||
| JP4116112A | ||||
| JP3105193A | ||||
| JP2000017413A | ||||
| JP9249951A |
Attorney, Agent or Firm:
Ippei Watanabe
Koji Kikawa
Koji Kikawa