Embedding metal parts of complex shape in sand contained in a steel box prevents strains and warping during heat treatment. The sand not only provides a simple, inexpensive support for the parts but also ensures more uniform distribution of heat to the parts

Briscoe, C. C.

Kelley, R. C.

English

NASA Technical Reports Server

December 1966	 Brief 66-10616 
NASA TECH BRIEF	
A, JAL 
NASA Tech Briefs are issued to summarize specific innovations derived from the U.S. space program, 
to encourage their commercial application. Copies are available to the public at 15 cents each 
from the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151. 
Heat-Treatment of Metal Parts Facilitated by Sand Embedment 
The problem: 
To eliminate the need of special holding fixtures 
used to prevent strains and warping of metal parts 
of complex shape subjected to heat treatment, such 
as annealing or stress relieving. 
The solution: 
Embed the metal parts in sand contained in a steel 
box. The sand not only provides a simple, inexpen-
sive support for the parts but also ensures more uni-
form distribution of heat to the parts. 
How it's done: 
The heat treatment process is carried out by placing 
the box containing the parts completely embedded 
in sand into a temperature controlled oven. Use of 
an oven may be eliminated, at an appreciable cost 
saving, by attaching electrical leads to the ends of
the steel box and resistance-heating the box and 
contents to the desired temperature. 
Note: 
Inquiries concerning this innovation may be di-
rected to:
Technology Utilization Officer 
Marshall Space Flight Center 
Huntsville, Alabama 35812 
Reference: B66-10616 
Patent status: 
No patent action is contemplated by NASA. 
Source: C. C. Briscoe and R. C. Kelley 
of the Boeing Company, 
under contract to 
Marshall Space Flight Center 
(M-FS-1543) 
Category 03 
This document was prepared under the sponsorship of the National 
Aeronautics and Space Administration. Neither the United States 
Government nor any person acting on behalf of the United States
Government assumes any liability resulting from the use of the 
information contained in this document, or warrants that such use 
will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19660000614 2020-03-11T17:46:19+00:00Z


Heat-treatment of metal parts facilitated by sand embedment

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