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Title: Metal spray apparatus with a U-shaped electric inlet gas heater and a one-piece electric heater surrounding a nozzle

Abstract

An electrically heated 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:
119051
Patent Number(s):
5,459,811
Application Number:
PAN: 8-192,697
Assignee:
MSE, Inc., Butte, MT (United States)
DOE Contract Number:  
AC22-88ID12735
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 17 Oct 1995
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; SPRAY COATING; EQUIPMENT; DESIGN; FASTENERS; SPRAYED COATINGS; LIQUID METALS; TEMPERATURE CONTROL; PRESSURE DEPENDENCE; USES

Citation Formats

Glovan, R J, Tierney, J C, McLean, L L, Johnson, L L, and Verbael, D J. Metal spray apparatus with a U-shaped electric inlet gas heater and a one-piece electric heater surrounding a nozzle. United States: N. p., 1995. Web.
Glovan, R J, Tierney, J C, McLean, L L, Johnson, L L, & Verbael, D J. Metal spray apparatus with a U-shaped electric inlet gas heater and a one-piece electric heater surrounding a nozzle. United States.
Glovan, R J, Tierney, J C, McLean, L L, Johnson, L L, and Verbael, D J. Tue . "Metal spray apparatus with a U-shaped electric inlet gas heater and a one-piece electric heater surrounding a nozzle". United States.
@article{osti_119051,
title = {Metal spray apparatus with a U-shaped electric inlet gas heater and a one-piece electric heater surrounding a nozzle},
author = {Glovan, R J and Tierney, J C and McLean, L L and Johnson, L L and Verbael, D J},
abstractNote = {An electrically heated 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 = {1995},
month = {10}
}