Method for producing pellets for use in a cryoblasting process
Abstract
A cryoblasting process having a centrifugal accelerator for accelerating frozen pellets of argon or carbon dioxide toward a target area utilizes an accelerator throw wheel designed to induce, during operation, the creation of a low-friction gas bearing within internal passages of the wheel which would otherwise retard acceleration of the pellets as they move through the passages. An associated system and method for removing paint from a surface with cryoblasting techniques involves the treating, such as a preheating, of the painted surface to soften the paint prior to the impacting of frozen pellets thereagainst to increase the rate of paint removal. A system and method for producing large quantities of frozen pellets from a liquid material, such as liquid argon or carbon dioxide, for use in a cryoblasting process utilizes a chamber into which the liquid material is introduced in the form of a jet which disintegrates into droplets. A non-condensible gas, such as inert helium or air, is injected into the chamber at a controlled rate so that the droplets freeze into bodies of relatively high density.
- Inventors:
-
- Clinton, TN
- Heiskell, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 871146
- Patent Number(s):
- 5666821
- Assignee:
- Lockheed Martin Energy Systems, Inc. (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B08 - CLEANING B08B - CLEANING IN GENERAL
B - PERFORMING OPERATIONS B24 - GRINDING B24C - ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; producing; pellets; cryoblasting; process; centrifugal; accelerator; accelerating; frozen; argon; carbon; dioxide; target; utilizes; throw; wheel; designed; induce; operation; creation; low-friction; gas; bearing; internal; passages; otherwise; retard; acceleration; move; associated; removing; paint; surface; techniques; involves; treating; preheating; painted; soften; prior; impacting; thereagainst; increase; rate; removal; quantities; liquid; material; chamber; introduced; form; jet; disintegrates; droplets; non-condensible; inert; helium; air; injected; controlled; freeze; bodies; relatively; density; cryoblasting process; frozen pellets; controlled rate; process utilizes; liquid material; carbon dioxide; centrifugal accelerator; liquid argon; wheel designed; inert helium; throw wheel; internal passage; producing pellets; accelerating frozen; accelerator throw; /62/
Citation Formats
Foster, Christopher A, and Fisher, Paul W. Method for producing pellets for use in a cryoblasting process. United States: N. p., 1997.
Web.
Foster, Christopher A, & Fisher, Paul W. Method for producing pellets for use in a cryoblasting process. United States.
Foster, Christopher A, and Fisher, Paul W. Wed .
"Method for producing pellets for use in a cryoblasting process". United States. https://www.osti.gov/servlets/purl/871146.
@article{osti_871146,
title = {Method for producing pellets for use in a cryoblasting process},
author = {Foster, Christopher A and Fisher, Paul W},
abstractNote = {A cryoblasting process having a centrifugal accelerator for accelerating frozen pellets of argon or carbon dioxide toward a target area utilizes an accelerator throw wheel designed to induce, during operation, the creation of a low-friction gas bearing within internal passages of the wheel which would otherwise retard acceleration of the pellets as they move through the passages. An associated system and method for removing paint from a surface with cryoblasting techniques involves the treating, such as a preheating, of the painted surface to soften the paint prior to the impacting of frozen pellets thereagainst to increase the rate of paint removal. A system and method for producing large quantities of frozen pellets from a liquid material, such as liquid argon or carbon dioxide, for use in a cryoblasting process utilizes a chamber into which the liquid material is introduced in the form of a jet which disintegrates into droplets. A non-condensible gas, such as inert helium or air, is injected into the chamber at a controlled rate so that the droplets freeze into bodies of relatively high density.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1997},
month = {Wed Jan 01 00:00:00 EST 1997}
}
Works referenced in this record:
Source of Uniform‐Sized Liquid Droplets
journal, October 1964
- Schneider, J. M.; Hendricks, C. D.
- Review of Scientific Instruments, Vol. 35, Issue 10
Apparatus for producing uniform solid spheres of hydrogen
journal, June 1977
- Foster, C. A.; Kim, K.; Turnbull, R. J.
- Review of Scientific Instruments, Vol. 48, Issue 6