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Title: Method and apparatus for spraying molten materials

Abstract

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. 12 figs.

Inventors:
; ; ; ; ;
Issue Date:
Research Org.:
MSE Inc
OSTI Identifier:
251108
Patent Number(s):
5,529,809
Application Number:
PAN: 8-192,691
Assignee:
MSE, Inc., Butte, MT (United States)
DOE Contract Number:  
AC22-88ID12735
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 25 Jun 1996
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; SPRAY COATING; FASTENERS; SPRAYED COATINGS; EQUIPMENT; DESIGN; LIQUID METALS

Citation Formats

Glovan, R J, Tierney, J C, McLean, L L, Johnson, L L, Nelson, G L, and Lee, Y M. Method and apparatus for spraying molten materials. United States: N. p., 1996. Web.
Glovan, R J, Tierney, J C, McLean, L L, Johnson, L L, Nelson, G L, & Lee, Y M. Method and apparatus for spraying molten materials. United States.
Glovan, R J, Tierney, J C, McLean, L L, Johnson, L L, Nelson, G L, and Lee, Y M. Tue . "Method and apparatus for spraying molten materials". United States.
@article{osti_251108,
title = {Method and apparatus for spraying molten materials},
author = {Glovan, R J and Tierney, J C and McLean, L L and Johnson, L L and Nelson, G L and Lee, Y M},
abstractNote = {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. 12 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {6}
}