Method for heat treating a metal tube or pipe, metal tube or pipe, and heat treatment furnace
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United States of America Patent
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Aug 29, 2017
Grant Date -
Feb 19, 2015
app pub date -
Mar 8, 2013
filing date -
Mar 26, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for heat treating a metal tube or pipe is provided to perform heat treatment in such a manner that metal tubes or pipes (1) to be accommodated in a heat treatment furnace are laid down on a plurality of cross beams (22) arranged along a longitudinal direction of the metal tubes or pipes with the distance between adjacent cross beams being in a range of 200 to 2500 mm. This makes it possible to inhibit bending and scratches of the metal tubes or pipes without causing discoloration and deterioration of the manufacturing efficiency for the metal tubes or pipes. When the metal tubes or pipes (1) are laid down on the cross beams (22), spacers may be interposed between the metal tubes or pipes (1) and the cross beams (22) on which they are laid down.
First Claim
Family
International Classification(s)
- F16L:PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR ....
- F27D:DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, ....
- C22F:CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS MET....
- F22B:METHODS OF STEAM GENERATION; STEAM BOILERS
- G21C:NUCLEAR REACTORS
- C21D:MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS....
- C22C:ALLOYS
- G21D:NUCLEAR POWER PLANT
- [Classification Symbol]
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