Invention Grant
- Patent Title: Heat exchanger tube, method of manufacturing heat exchanger tube, and fluidized-bed furnace
- Patent Title (中): 换热器管，热交换器管的制造方法和流化床炉
-
Application No.: US11645584Application Date: 2006-12-27
-
Publication No.: US07895957B2Publication Date: 2011-03-01
- Inventor: Hirotoshi Inomata , Hiroshi Yoshida
- Applicant: Hirotoshi Inomata , Hiroshi Yoshida
- Applicant Address: JP Tokyo
- Assignee: Dowa Holdings Co., Ltd.
- Current Assignee: Dowa Holdings Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Rader, Fishman & Grauer PLLC
- Priority: JP2005-379720 20051228
- Main IPC: F23M9/10
- IPC: F23M9/10 ; F23G5/30 ; F28F21/08
Abstract:
A heat exchanger tube 41 includes: a first cover layer 44 provided on an outer side of a tube main body 42 to partly or completely cover a tube main body 42; and a second cover layer 45 provided on an outer side of the first cover layer 44 to partly or completely cover the first cover layer 44. The first cover layer 44 is formed by overlay-welding a material higher in ductility than the second cover layer 45 to the tube main body 42. The second cover layer 45 is formed by overlay-welding a material higher in hardness than the first cover layer 44 to the first cover layer 44.
Public/Granted literature
- US20070157859A1 Heat exchanger tube, method of manufacturing heat exchanger tube, and fluidized-bed furnace Public/Granted day:2007-07-12
Information query
