Accession Number:

AD0411488

Title:

PRECISION PATTERN MAKING TECHNIQUES,

Descriptive Note:

Corporate Author:

NAVAL AVIONICS FACILITY INDIANAPOLIS IND

Personal Author(s):

Report Date:

1963-03-31

Pagination or Media Count:

17.0

Abstract:

Three methods of controlling wax shrinkage are shown. One is the insulation of selected die surfaces to gain directional solidification. This technique can eliminate solidification shrinkage and solidification stresses. Another method is the reduction of solid shrinkage effects by feeding wax at lower temperatures. Cavity pressure measurements are used to indicate duration of feeding. The third method is the use of pneumatic pressure in the interior of the pattern. This causes an il void as wax shrinkage occurs and permits true reproduction of the curvature or flatness of the die cavity surfaces. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE