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US 3,939,897 AGranted
Method for producing heat-insulating casting
AssigneeToyota Jidosha Kogyo Kabushiki Kaisha
InventorsYasuhisa Kaneko, Yasuhiko Komatsu, Yoshihiro Hibino, Yasuo Okada
Life of this patent
Estimating the term…
Abstract
A method for producing a heat-insulating casting characterized by placing a flexible ceramic semifinished product having a smooth surface, a modulus of elasticity of 200-5000 Kg/mm.sup.2, a bending strength of 8-200 Kg/cm.sup.2, and a wall-thickness less than 1/4 of the inside diameter, inside a casting mold, and casting molten metal so as to enclose the ceramic semifinished product.
Claims5
A method for manufacturing heat-insulating castings comprising the steps of:
- setting a flexible semifinished ceramic product, having a smooth surface, an elastic modulus of 200 to 5,000 kg/mm.sup.2, a bending strength of 8 to 200 kg/cm.sup.2, and a wall-thickness less than 1/4 of its inside diameter, inside a casting mold and casting molten metal to enclose the ceramic semifinished product.
Dependencies are inferred from the claim text.