Title:
金属管
Document Type and Number:
Japanese Patent JP5118057
Kind Code:
B2
Abstract:
A metallic tube for heating a medium or subject outside thereof or inside it by transfer of heat energy through walls of the tube, in which heat is absorbed or emitted at least to a substantial degree by radiation on one or both of the inner and outer surfaces of the tube, is of a material forming a layer of essentially Al2O3 on the surfaces thereof when heated to at least approximately 750° C. At least one of the external and the internal surface of the tube is coated by one of a metal, metal alloy and metal compound, which after oxidation forms a layer having an emissivity coefficient exceeding 0.7, or by a layer essentially consisting of a metal oxide which has an emissivity coefficient exceeding 0.7.
Inventors:
Ogre Glen, Cress
Yong Sung, Bo
Yong Sung, Bo
Application Number:
JP2008543238A
Publication Date:
January 16, 2013
Filing Date:
November 15, 2006
Export Citation:
Assignee:
Sandvik Intellectual Property Actie Borag
International Classes:
C10G9/20; F27B17/00; C22C38/00; C22C38/18; C22C38/36; C23C8/18; F27D1/00
Domestic Patent References:
| JP2003139273A |
Foreign References:
| WO2004104257A1 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Hiroshi Kamematsu
Nakamura Asayuki
Nagasaka Tomoyasu
Takashi Ishida
Tetsuji Koga
Hiroshi Kamematsu
Nakamura Asayuki
Nagasaka Tomoyasu