The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2016
Filed:
Nov. 27, 2012
Masaomi Mitsutake, Toyota, JP;
Hirotsune Watanabe, Miyoshi, JP;
Tomokazu Suda, Okazaki, JP;
Yusuke Kato, Toyokawa, JP;
Toshihiko Zenpo, Toyokawa, JP;
Masaomi Mitsutake, Toyota, JP;
Hirotsune Watanabe, Miyoshi, JP;
Tomokazu Suda, Okazaki, JP;
Yusuke Kato, Toyokawa, JP;
Toshihiko Zenpo, Toyokawa, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-Shi, JP;
SINTOKOGIO, LTD., Nagoya-Shi, JP;
Abstract
By mixing, stirring and kneading, with water glass () as a binder, sand (), a surfactant (), and water (), foamed sand (S) is generated. The foamed sand (S) is packed in a cavity of a metallic mold and solidified to form a sand mold. By using the sand mold, aluminum is cast. By using water glass that is an inorganic binder, during casting, harmful gas and odor are not generated. Further, when a molar ratio n of water glass (Na2O nSiO2 mH2O) is adjusted in the range of 0.65 to 1.30, a quantity of water (H2O) generated by heating water glass with a high temperature melt during casting can be suppressed. Thereby, hydrogen gas (H2) according to a reaction between water (H2O) and aluminum (Al) can be suppressed from being generated and casting quality can be improved.