Abstract: 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.

Abstract: A method of treating a surface of a mold that includes supplying a fullerene into an amorphous carbon layer that covers the surface of the mold and heating the amorphous carbon layer to at least 400° C. while covering a surface of the amorphous carbon layer with a covering member.

Abstract: Disclosed are an inexpensive casting member on which a film with high peel strength is formed, and a method for manufacturing the casting member. A surface-treated mold (1) includes a metal mold (10) having the molding surface including a plurality of protrusions (11) each having an inverse-slope shape, and a carbon film (20) formed on the molding surface of the metal mold (10). The surface-treated mold (1) is manufactured through a step (S1) including a modeling step (S10) for producing the metal mold (10), by means of selective laser sintering, which has the molding surface including the plurality of protrusions (11) each having the inverse-slope shape, and a film-forming step (S20) for forming the carbon film (20) on the molding surface of the metal mold (10) produced in the modeling step (S10).

Abstract: A method for rust-proofing a mold, which is capable of reducing the time and the cost required for rust-proofing the mold. The method includes an iron hydroxide-forming step for forming iron hydroxide on a predetermined part of the surface of the mold, and a surface-treating step for forming a film covering the molding surface of the mold, and for changing the iron hydroxide formed on the mold into black rust, by heating the mold, under an oxygen-deficiency atmosphere, on which the iron hydroxide is formed in the iron hydroxide-forming step.

Abstract: In the invention, a nano carbon layer that is constituted by a nano carbon group is formed on a molten metal contact surface of a casting member, and a lubricant that has a pulverulent body, which is constituted by BN, graphite, talc or silica, as a main component is applied onto the nano carbon layer. It is preferable that a nitrided layer be formed between the nano carbon layer and the molten metal contact surface of the casting member when the nano carbon layer is formed, and that the lubricant applied to the nano carbon layer have a BN pulverulent body as a main component. According to the invention, the mold releasability and fluidity of the casting member can be maintained even if the number of times of casting is increased, and the cost of the process of subjecting the molten metal contact surface of the casting member to the surface treatment can be reduced.

Abstract: Disclosed are a film with high strength which does not easily deteriorate, and a method for manufacturing the film. A step for manufacturing a film formed on the molding surface of a die, includes an initial film-forming step for forming, on the molding surface of the die, an initial film having a carbon film which has a plurality of nano-carbons, and to which a plurality of fullerenes are applied, and a nitrogen compound layer and a sulfurized layer which are situated between the carbon film and the die, and an intermittent heating step for intermittently heating the initial film formed in the initial film-forming step under a non-oxidizing atmosphere.

Abstract: A power module includes a power device and a heat sink. The heat sink includes a refrigerant passage in which a cooling medium flows and a corrugated fin body arranged in the refrigerant passage. The refrigerant passage is defined by a surface and a backside, and the power device is disposed in proximity to the surface. The corrugated fin body has crests and troughs that extend in the flow direction of the cooling medium and side walls each of which connects the corresponding one of the crests with the adjacent one of the troughs. Each adjacent pair of the side walls and the corresponding one of the crests or the corresponding one of the troughs arranged between the adjacent side walls form a fin. A guide that extends in the flow direction of the cooling medium and operates to stir the cooling medium is arranged in each of the fins.

Abstract: 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.

Abstract: 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.

Abstract: An oil-based graphite lubricant for a plunger includes graphite that is used as a solid lubricant, and an organic bentonite swollen by a mineral oil and a surfactant that are used as a graphite dispersant. The lubricant is prepared by a method which includes a first step of causing an organic bentonite to swell in the mineral oil, a second step of adding a surfactant, and a third step of adding and dispersing graphite.

Abstract: 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.

Abstract: A surface treatment method for a metal material is provided which includes applying diluted sulfuric acid to a surface of the metal material that is composed primarily of iron, performing a heat treatment on the metal material in the presence of at least one of CO, CO2 and organic gas under nitriding conditions under which a nitrided layer is formed in a superficial layer of the metal material after the application of the diluted sulfuric acid to form a carbon film which includes at least one of carbon nanocoils, carbon nanotubes and carbon nanofilaments on a surface of the nitrided layer of the metal material.

Abstract: 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.

Abstract: A technique for an infrared radiation thermometer used for thermography detects measurement abnormality of the infrared radiation thermometer and estimates the causes of the measurement abnormality such as contamination of an objective lens and a malfunction in a mechanism section of the infrared radiation thermometer.

Abstract: A surface treatment method includes covering a surface of a casting mold with a carbon film containing at least one type of nanocarbon selected from the group including carbon nanocoils, carbon nanotubes and carbon nanofilaments, and further applying fullerenes to that surface. With this surface treatment method being performed on a surface (a cavity surface, etc. of a casting mold) making contact with a molten casting material such as aluminum, etc., sticking of the molten casting material to the mold is inhibited, release resistance of the product is reduced, and release effectiveness is improved. The release effectiveness lasts longer than in the case of a conventional carbon film.

Abstract: A heat sink (1) for power module is capable of mounting a power device (101) on at least a surface of the heat sink. The heat sink includes a refrigerant passage (1d) in which cooling medium that dissipates heat generated by the power device (101) flows and a corrugated fin body (1a) arranged in the refrigerant passage (1d). The corrugated fin body (1a) has crests (21b) and troughs (21c) that extend in the flow direction of the cooling medium, and side walls (21a) each of which connects the corresponding one of the crests (21b) with the adjacent one of the troughs (21c). Each adjacent pair of the side walls (21a) and the corresponding one of the crests (21b) or the corresponding one of the troughs (21c) arranged between the adjacent side walls (21a) form a fin (21). Each of the side walls (21a) has a louver (31) that operates to, at least, rotate the cooling medium flowing in the associated fin (21). The heat sink (1) thus has a further improved heat dissipating performance.

Abstract: A heat sink for a power module able to realize a further improvement of heat radiating performance and a further improvement of a mounting property is provided. The heat sink 1 for a power module has a laminating body 20, a first side plate 30 and a second side plate 40. The laminating body 20 has plural flow path plates 21 formed in a plate shape in which plural grooves 23 parallel to each other are concavely arranged on a flat joining face 22. Each groove 23 is set to a parallel flow path 50 parallel to a front face side by laminating each flow path plate 21 by each joining face 22. A portion other than each groove 23 of each joining face 22 forms a heat transfer path 70a to each parallel flow path 50 of a laminating direction. A flow-in path 30a and a flow-out path 40a are formed in the first and second side plates 30, 40. The flow-in path 30a and the flow-out path 40a are joined to side faces 26a, 26b of the laminating body 20, and are communicated with each parallel flow path 50.

Abstract: A die-casting die is provided. The die-casting die may include a cavity forming surface. A part of the cavity forming surface may be coated with a surface treatment layer. The surface treatment layer may include a mixture of fibrous carbon and particle carbon and have a thermal conductivity that increases in connection to an increase in an acted pressure.

Abstract: A technique for an infrared radiation thermometer used for theiniography that detects measurement abnormality of an infrared radiation thermometer and estimates the causes of the measurement abnormality such as contamination of an objective lens and a malfunction in a mechanism section of the infrared radiation thermometer.

Abstract: Feature points (41, 42, 43) in the heat image (10) of a casting die (1) are extracted and a predetermined geometrical conversion processing is performed on the heat image (10) such that the feature points are superimposed on the reference feature points (61, 62, 63) set in a reference heat image (30) picked up previously to generate a corrected heat image (20). A difference image (40) is generated by superimposing the corrected heat image (20) and the reference heat image (30) such that the corrected feature points (51, 52, 53) in the corrected heat image (20) is superimposed on the corresponding reference feature points (61, 62, 63). With such an arrangement, a highly reliable difference image can be generated even when the imaging field of vision slips off among a plurality of heat images.