Setting expansion of investment and accuracy of castings

Stevens L. (1988) Setting expansion of investment and accuracy of castings. Dental Materials, 4 6: 367-370. doi:10.1016/S0109-5641(88)80051-4


Author Stevens L.
Title Setting expansion of investment and accuracy of castings
Journal name Dental Materials   Check publisher's open access policy
ISSN 0109-5641
Publication date 1988
Sub-type Article (original research)
DOI 10.1016/S0109-5641(88)80051-4
Volume 4
Issue 6
Start page 367
End page 370
Total pages 4
Subject 2211 Mechanics of Materials
2500 Materials Science
3500 Dentistry
Abstract Setting expansion of 4 phosphate-bonded investments was measured under 3 different conditions: a hygroscopic condition, a condition using a ring lined with a wet liner and a condition using a ring lined with a dry liner. Accuracy of castings of a Ni-Cr alloy made in each of the 4 investments in rings lined with a wet liner was measured. One investment exhibited negative potential for hygroscopic expansion. Expansion of all investments in wet-lined rings was not significantly different from their expansion under the hygroscopic condition. There was no significant difference in setting expansion between the investments when a wet liner was used. Significant differences in accuracy existed between castings produced in the different investments using a wet liner. The correlation between the setting expansion of the investments using a wet liner and the accuracy of castings produced using a wet liner was not high and was not significant. Comparison between investments with regard to their ability to produce accurate castings in terms of mould expansion by measurement of setting expansion is of no value.
Keyword casting accuracy
phosphate bonded investment
setting expansion
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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Created: Tue, 12 Jul 2016, 00:54:33 EST by System User