Gypsum-based investment material composition for casting, and method for manufacturing gypsum-based investment material composition for casting
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United States of America Patent
Stats
-
Dec 19, 2023
Grant Date -
Oct 1, 2020
app pub date -
Oct 1, 2018
filing date -
Oct 5, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention provides a gypsum-based embedding material composition for casting useful for forming a rapid-heating type gypsum-based embedding material and a method for producing the same. The gypsum-based embedding material is formed of the gypsum-based powdery embedding material composition by adding a malaxation liquid into the composition and heating the mixture in a high-temperature furnace. The gypsum-based embedding material composition contains as main components, at least one co-pulverized material selected from a co-pulverized material of calcined gypsum and quartz, that of calcined gypsum and cristobalite, and that of calcined gypsum, quartz, and cristobalite. The composition further contains a powdery moisture-retaining component or a liquid moisture-retaining component having a low water content, and has an average particle diameter of 30 μm or less.
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International Classification(s)
- 2018 Application Filing Year
- C04B Class
- 1451 Applications Filed
- 1034 Patents Issued To-Date
- 71.27 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C04B Class
- 0 % this patent is cited more than
- 2 Age
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