Method of fabricating a flow device
- Kingston, TN
This invention is a novel method for fabricating leak-tight tubular articles which have an interior flow channel whose contour must conform very closely with design specifications but which are composed of metal which tends to warp if welded. The method comprises designing two longitudinal half-sections of the article, the half-sections being contoured internally to cooperatively form the desired flow passageway. Each half-section is designed with a pair of opposed side flanges extending between the end flanges and integral therewith. The half-sections are positioned with their various flanges in confronting relation and with elongated metal gaskets extending between the confronting flanges for the length of the array. The gaskets are a deformable metal which is fusion-weldable to the end flanges. The mating side flanges are joined mechanically to deform the gaskets and provide a longitudinally sealed assembly. The portions of the end flanges contiguous with the ends of the gaskets then are welded to provide localized end welds which incorporate ends of the gaskets, thus transversely sealing the assembly. This method of fabrication provides leak-tight articles having the desired precisely contoured flow channels, whereas various conventional methods have been found unsatisfactory.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- W-7405-ENG-26
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 4112568
- OSTI ID:
- 863178
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
fabricating
flow
device
novel
leak-tight
tubular
articles
interior
channel
contour
conform
closely
design
specifications
composed
metal
tends
warp
welded
comprises
designing
longitudinal
half-sections
article
contoured
internally
cooperatively
form
desired
passageway
half-section
designed
pair
opposed
flanges
extending
integral
therewith
positioned
various
confronting
relation
elongated
gaskets
length
array
deformable
fusion-weldable
mating
joined
mechanically
deform
provide
longitudinally
sealed
assembly
portions
contiguous
localized
welds
incorporate
transversely
sealing
fabrication
provides
precisely
channels
conventional
methods
found
unsatisfactory
desired flow
flow passage
conventional methods
flow channels
flow channel
method comprises
novel method
method comprise
metal gasket
integral therewith
metal gas
tubular article
design specifications
/29/138/239/285/