Yaokawa
Jun Yaokawa, Sendai-Shi JP
Patent application number | Description | Published |
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20090288797 | EXPENDABLE SALT CORE FOR CASTING - An expendable salt core has the shape of a water jacket by, e.g., die casting using a salt of bromine and at least one of sodium and potassium, and a salt of carbonic acid and at least one of sodium and potassium. The expendable salt core is formed to contain at least one of potassium and sodium as a cation, and bromine and carbonic acid as anions. For example, the expendable salt core is formed by casting using a melt obtained by melting a salt mixture of sodium bromide and sodium carbonate. | 11-26-2009 |
Jun Yaokawa, Miyagi JP
Patent application number | Description | Published |
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20090205801 | METHOD OF MANUFACTURING EXPENDABLE SALT CORE FOR CASTING AND EXPENDABLE SALT CORE FOR CASTING - A die casting method for forming an expandable salt core includes, first, a salt mixture containing at least a potassium salt and a sodium salt is melted by heating to obtain a melt. Subsequently, the temperature of the melt is decreased to set the melt in a semi-solidified (solid-liquid coexisting) state. The melt in the semi-solidified state is injected into a metal mold under a high pressure and solidified. After solidification, the obtained expendable salt core is taken out of the metal mold. | 08-20-2009 |
Jun Yaokawa, Nisshin-Shi JP
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20110127403 | SURFACE-TREATED MOLD AND METHOD OF PRODUCING SURFACE-TREATED MOLD - A surface-treated mold that includes a mold, a metal layer that is provided on a surface of the mold and contains at least one metal selected from nickel, chromium, tungsten and brass, and a carbon film that is provided on a surface of the metal layer, wherein the metal layer contains carbon, and the carbon concentration in the metal layer is higher between the boundary with the carbon film and the center of the metal layer than that between the boundary with the mold and the center of the metal layer. | 06-02-2011 |
20110183155 | MOLD, SOLIDIFIED BODY, AND METHODS OF MANUFACTURE THEREOF - A mold includes: a base; and a contact surface which is provided on the base and which comes into contact with a molten material. The contact surface is provided with a first surface portion that includes a first fiber layer in which first carbon fibers are raised, and a second surface portion having different surface characteristics from the first surface portion. | 07-28-2011 |
20130171021 | FREE CASTING METHOD, FREE CASTING APPARATUS, AND CASTING - A free casting method according to the present invention includes, a lead-out step for leading out molten metal from a lead-out area provided in a source of supply, e.g. a surface level of the molten metal, to retain the molten metal temporarily by surface films generated on an outer surface, and a forming step for obtaining a formed body by solidifying retained molten metal led out along a set passage depending on a desired casting shape, wherein the retained molten metal is solidified after being formed into the desired casting shape by applying an external force thereto at positions between an unrestrained root portion of the retained molten metal in vicinity of the surface level of the molten metal and a solidification interface defined as a boundary between the retained molten metal and the formed body in the forming step. | 07-04-2013 |
20140120250 | SURFACE-TREATED MOLD AND METHOD OF PRODUCING SURFACE-TREATED MOLD - A surface-treated mold that includes a mold, a metal layer that is provided on a surface of the mold and contains at least one metal selected from nickel, chromium, tungsten and brass, and a carbon film that is provided on a surface of the metal layer, wherein the metal layer contains carbon, and the carbon concentration in the metal layer is higher between the boundary with the carbon film and the center of the metal layer than that between the boundary with the mold and the center of the metal layer. | 05-01-2014 |
Jun Yaokawa, Aichi-Ken JP
Patent application number | Description | Published |
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20110209844 | DIE-CASTING DIE AND METHOD FOR DIE-CASTING | 09-01-2011 |
20110264425 | MOLTEN ALLOY SOLIDIFICATION ANALYZING METHOD AND SOLIDIFICATION ANALYZING PROGRAM FOR PERFORMING THE SAME - A molten alloy solidification analyzing method of the invention is characterized in that the amount of change in fraction solid is calculated based on the solidification rate of molten alloy and the solidification rate parameter that is a parameter for evaluating the influence of the solidification rate on solidification of the molten alloy, according to the fraction solid. By conducting such a simulation that takes into consideration the supercooling, a highly accurate solidification analysis is relatively easily performed for various molten alloys. | 10-27-2011 |
Jun Yaokawa, Nagakute-Shi JP
Patent application number | Description | Published |
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20140116567 | PIPE WITH RIB AND METHOD FOR MANUFACTURING PIPE WITH RIB - A pipe with a rib includes a pipe portion, and a rib portion formed inside the pipe portion. The rib portion includes a plurality of bent portions in accordance with bending of the pipe portion. | 05-01-2014 |
20150071817 | MANUFACTURING METHOD OF CASTING, MANUFACTURING DEVICE THEREOF, AND CASTING - There are provided a manufacturing method of a casting capable of easily manufacturing a casting having a complex form and of increasing the degree of freedom of form of the casting to be manufactured, a manufacturing device thereof and a casting. At the time of forming a casting by drawing out molten metal from a bath surface of a molten metal bath and solidifying the molten metal which has been drawn out, an outer contour unit configured from a plurality of outer contour defining members for defining the outer contour of a casting is arranged in a region between the bath surface of the molten meth bath and a solid region where the molten metal is solidified and the molten metal which has been drawn out from the bath surface is drawn out through a region determined by the outer contour unit, and the form of the casting is changed by moving at least one of the plurality of outer contour defining members according to the drawing out of the molten metal. | 03-12-2015 |