"Shell cracking is the single greatest problem affecting investment casters. A clearer understanding of the factors affecting the melt profile of the wax can be gained using computational fluid dynamics (CFD) to model the interaction among 1) the thermal conductivity of the wax, 2) the thermal conductivity of the shell, and 3) the temperature of the autoclave during the autoclave de-waxing cycle. The most favorable melt profile results from a high autoclave temperature (438⁰K to 458⁰K) and saturated thermal conductivity of the shell (1.36 to 1.40 Wm⁻¹k⁻¹) in conjunction with a low wax thermal conductivity (0.33 Wm⁻¹k⁻¹). These parameters reduce the likelihood of shell cracking as a result of wax bulk expansion"--Abstract, page iv.
Liou, Frank W.
Kohser, Ronald A.
Materials Science and Engineering
M.S. in Materials Science and Engineering
Missouri University of Science and Technology
Journal article titles appearing in thesis/dissertation
- Parametric modeling of the autoclave de-waxing process
- Investment shell building on ice patterns
- Oxidation during solidification of 15.5 PH marine propellers
x, 68 pages
© 2009 Edward Alan Druschitz, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Heat -- Transmission
Shell molding (Founding)
Print OCLC #
Electronic OCLC #
Link to Catalog Recordhttp://laurel.lso.missouri.edu/record=b7317123~S5
Druschitz, Edward A., "Investment shell cracking" (2009). Masters Theses. 5003.