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Title: Method and apparatus for forming flues on tubular stock

Abstract

The present invention is directed to a die mechanism utilized for forming flues on long, relatively narrow tubular stock. These flues are formed by displacing a die from within the tubular stock through perforations previously drilled through the tubular stock at selected locations. The drawing of the die upsets the material to form the flue of the desired configuration. The die is provided with a lubricating system which enables the lubricant to be dispensed uniformly about the entire periphery of the die in contact with the material being upset so as to assure the formation of the flues. Further, the lubricant is dispensed from within the die onto the peripheral surface of the latter at pressures in the range of about 2000 to 10,000 psi so as to assure the adequate lubrication of the die during the drawing operation. By injecting the lubricant at such high pressures, low viscosity liquid, such as water and/or alcohol, may be efficiently used as a lubricant and also provides a mechanism by which the lubricant may be evaporated from the surface of the flues at ambient conditions so as to negate the cleansing operations previously required prior to joining the flues to other conduitmore » mechanisms by fusion welding and the like.« less

Inventors:
;
Issue Date:
OSTI Identifier:
7062280
Assignee:
Dept. of Energy TIC; ERA-06-005170; EDB-81-005619
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; STACKS; FABRICATION; ALCOHOLS; CONFIGURATION; DESIGN; DIES; LUBRICANTS; LUBRICATION; MANUFACTURING; TUBES; WATER; HYDROGEN COMPOUNDS; HYDROXY COMPOUNDS; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; 420200* - Engineering- Facilities, Equipment, & Techniques

Citation Formats

Beck, D.E., and Carson, C. Method and apparatus for forming flues on tubular stock. United States: N. p., 1979. Web.
Beck, D.E., & Carson, C. Method and apparatus for forming flues on tubular stock. United States.
Beck, D.E., and Carson, C. Fri . "Method and apparatus for forming flues on tubular stock". United States.
@article{osti_7062280,
title = {Method and apparatus for forming flues on tubular stock},
author = {Beck, D.E. and Carson, C.},
abstractNote = {The present invention is directed to a die mechanism utilized for forming flues on long, relatively narrow tubular stock. These flues are formed by displacing a die from within the tubular stock through perforations previously drilled through the tubular stock at selected locations. The drawing of the die upsets the material to form the flue of the desired configuration. The die is provided with a lubricating system which enables the lubricant to be dispensed uniformly about the entire periphery of the die in contact with the material being upset so as to assure the formation of the flues. Further, the lubricant is dispensed from within the die onto the peripheral surface of the latter at pressures in the range of about 2000 to 10,000 psi so as to assure the adequate lubrication of the die during the drawing operation. By injecting the lubricant at such high pressures, low viscosity liquid, such as water and/or alcohol, may be efficiently used as a lubricant and also provides a mechanism by which the lubricant may be evaporated from the surface of the flues at ambient conditions so as to negate the cleansing operations previously required prior to joining the flues to other conduit mechanisms by fusion welding and the like.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {12}
}