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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.

Inventors:
 [1];  [1];  [1];  [1];  [1];  [1]
  1. Butte, MT
Issue Date:
Research Org.:
MSE INC
OSTI Identifier:
870485
Patent Number(s):
5529809
Assignee:
MSE, Inc. (Butte, MT)
DOE Contract Number:  
AC22-88ID12735
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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/

Citation Formats

Glovan, Ronald J, Tierney, John C, McLean, Leroy L, Johnson, Lawrence L, Nelson, Gordon L, and Lee, Ying-Ming. Method and apparatus for spraying molten materials. United States: N. p., 1996. Web.
Glovan, Ronald J, Tierney, John C, McLean, Leroy L, Johnson, Lawrence L, Nelson, Gordon L, & Lee, Ying-Ming. Method and apparatus for spraying molten materials. United States.
Glovan, Ronald J, Tierney, John C, McLean, Leroy L, Johnson, Lawrence L, Nelson, Gordon L, and Lee, Ying-Ming. Mon . "Method and apparatus for spraying molten materials". United States. https://www.osti.gov/servlets/purl/870485.
@article{osti_870485,
title = {Method and apparatus for spraying molten materials},
author = {Glovan, Ronald J and Tierney, John C and McLean, Leroy L and Johnson, Lawrence L and Nelson, Gordon L and Lee, Ying-Ming},
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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {1}
}

Patent:

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