Method and apparatus for spraying molten materials

Patent · Mon Jan 01 00:00:00 EST 1996

OSTI ID:870485

Glovan, Ronald J ^[1]; Tierney, John C ^[1]; McLean, Leroy L ^[1]; Johnson, Lawrence L ^[1]; Nelson, Gordon L ^[1]; Lee, Ying-Ming ^[1]

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1. Butte, MT

A metal spray apparatus is provided with a supersonic nozzle. Molten metal is injected into a gas stream flowing through the nozzle under pressure. By varying the pressure of the injected metal, the droplet can be made in various selected sizes with each selected size having a high degree of size uniformity. A unique one piece graphite heater provides easily controlled uniformity of temperature in the nozzle and an attached tundish which holds the pressurized molten metal. A unique U-shaped gas heater provides extremely hot inlet gas temperatures to the nozzle. A particularly useful application of the spray apparatus is coating of threads of a fastener with a shape memory alloy. This permits a fastener to be easily inserted and removed but provides for a secure locking of the fastener in high temperature environments.

• Research Organization: MSE INC
• DOE Contract Number: AC22-88ID12735
• Assignee: MSE, Inc. (Butte, MT)
• Patent Number(s): US 5529809
• OSTI ID: 870485
• Country of Publication: United States
• Language: English

Related Subjects

method
apparatus
spraying
molten
materials
metal
spray
provided
supersonic
nozzle
injected
gas
stream
flowing
pressure
varying
droplet
various
selected
sizes
size
degree
uniformity
unique
piece
graphite
heater
provides
easily
controlled
temperature
attached
tundish
holds
pressurized
u-shaped
extremely
hot
inlet
temperatures
particularly
useful
application
coating
threads
fastener
shape
memory
alloy
permits
inserted
removed
secure
locking
environments
spray apparatus
molten materials
gas temperature
memory alloy
molten metal
gas stream
particularly useful
shape memory
temperature environments
selected size
inlet gas
molten material
useful application
metal spray
stream flowing
size uniformity
easily controlled
temperature environment
supersonic nozzle
shaped gas
stream flow
gas heater
gas temperatures
easily inserted
injected metal
ray apparatus
size uniform
/427/118/264/