Abstract: An abrasive cleaning agent is provided which can be used for a polishing process for polishing a surface of a workpiece to form a mirror surface, which suppresses generation of static electricity and adhesion of stains to the workpiece, which decreases a crushing ratio, and which has a low environmental burden when the abrasive cleaning agent is disposed of. The above abrasive cleaning agent includes an elastic material containing a soluble nitrogen substance as a primary component, which is obtained from tubers of devil's tongue and which contains mannan as a primary component, and a 10% to 30% of water; and 1 to 30 percent by weight, with respect to the elastic material, of abrasive grains of size #220 or less, which are supported on surfaces of the elastic material and/or are buried therein, so that the grain diameter on the whole is in the range of 88 to 1,190 ?m.

Abstract: An abrasive cleaning agent is provided which can be used for a polishing process for polishing a surface of a workpiece to form a mirror surface, which suppresses generation of static electricity and adhesion of stains to the workpiece, which decreases a crushing ratio, and which has a low environmental burden when the abrasive cleaning agent is disposed of. The above abrasive cleaning agent includes an elastic material containing a soluble nitrogen substance as a primary component, which is obtained from tubers of devil's tongue and which contains mannan as a primary component, and a 10% to 30% of water; and 1 to 30 percent by weight, with respect to the elastic material, of abrasive grains of size #220 or less, which are supported on surfaces of the elastic material and/or are buried therein, so that the grain diameter on the whole is in the range of 88 to 1,190 ?m.

Abstract: A sliding member is produced by forming hardening layers with two-layered structure on surface of a substrate metal with a Vickers hardness of not more than Hv300, such as aluminum or magnesium alloy for example, and then forming a DLC film having surface roughness defined as maximum height roughness Rz of 1 to 10 ?m further on the hardening layers. The above-described hardening layers are composed of a first hardening layer dispersed with heavy metal particles, preferably made of tungsten and/or tantalum in the substrate metal, and a second hardening layer formed under the first hardening layer.

Abstract: A piston allowing a lubrication layer of a resin coating with a low friction coefficient to be tightly adhered to a skirt portion of a piston for an internal combustion engine, with low friction, superior wear resistance, and superior anti-seizing properties and that can reduce wear of a cylinder inner wall even if the lubrication layer is peeled off or abraded, is provided. Metal or ceramic fine particles having an average particle diameter of 20 ?m to 400 ?m are injected with compressed air or compressed nitrogen as a mixture fluid onto the skirt portion of the piston, made of an aluminum alloy and produced by a method such as casting or forging, at an injection speed of 80 m/s or more or an injection pressure of 0.2 MPa or more to be collided with the skirt portion, thereby uniformly making a microstructure of a piston base material fine-grained in a depth range of 1 ?m to 15 ?m from a surface of the skirt portion and forming a modified layer with an activated surface.

Abstract: The present invention provides a surface-oxide abrasion-resistant lubricant coating that can maintain high lubricity for a long time without wear of a base material and a coating or damage to an object to be contacted by a simpler method and with less expensive material. A mixed fluid of a compressed gas and fine-particle powders of two soft metals having lower hardness and lower melting point than the base material of a sliding contact portion is ejected onto a surface of the sliding contact portion. The fine-particle powders of the soft metals are made to react with oxygen in the compressed gas at the surface of the sliding contact portion to form a metal-oxide film with high melting point composed of metal oxides of the two soft metals, one of the metal oxides having higher hardness than the other. This metal-oxide film with high melting point includes a coating having a thickness of 0.

Abstract: To provide a lubricant for metallic material working and a method of press working a metallic material that makes it possible to improve the working accuracy of a press worked product and prolong the life of the die assembly beyond prior levels of life. [Solution] A lubricant for metallic material working comprises a mixture of a sulfur-based extreme pressure agent, an organic zinc compound, a calcium-based additive, and an ester compound, with lubricant base oil. The sulfur-based extreme pressure agent has a sulfur content of 5% by weight or higher based on the total weight of the lubricant. The organic zinc compound has a zinc content of 0.5% by weight or higher based on the total weight of the lubricant. The calcium-based additive has a calcium content of 0.5% by weight or higher based on the total weight of the lubricant. And the ester compound occupies a content of 1.0% by weight or higher based on the total weight of the lubricant.

Abstract: An internal combustion piston comprises a modified layer produced by a surface treatment including injecting injection powders having a diameter of 20 ?m to 400 ?m and containing a reinforcing element to be collided with a surface of the internal combustion piston obtained by casting and forging by injecting at an injection speed of 80 m/s or more or at an injection pressure of 0.3 MPa or more, the reinforcing element improving a strength of an alloy comprising the piston when being diffused and penetrated in the alloy, wherein by the surface treatment, oxides generated on the surface of the piston by the casting and forging are removed, and surface flaws generated on the surface are repaired, whereby the modified layer is formed to have a uniformly fine-grained metal microstructure which contains the reinforcing element in the injection powders diffused and penetrated in the vicinity of the surface of the piston and an alloy element of the alloy comprising the piston.

Abstract: Uniform nano-scale microstructures can be reliably formed on the surface layer of this metal product while still improving the surface roughness and make the surface layer robust enough not to disappear due to wear. The surface of the metal product is repeatedly subjected to instantaneous rapid heating and rapid cooling by intermittently ejecting onto the surface of the metal product shot with a mixture of three or more approximate but different particle sizes for a high ejection density, thereby forming uniform microstructures near the surface of the metal product and forming micro-diameter dimples in the metal surface.

Abstract: A sliding member is produced by forming hardening layers with two-layered structure on surface of a substrate metal with a Vickers hardness of not more than Hv300, such as aluminum or magnesium alloy for example, and then forming a DLC film having surface roughness defined as maximum height roughness Rz of 1 to 10 ?m further on the hardening layers. The above-described hardening layers are composed of a first hardening layer dispersed with heavy metal particles, preferably made of tungsten and/or tantalum in the substrate metal, and a second hardening layer formed under the first hardening layer.

Abstract: A method for surface treatment capable of easily improving a mechanical strength of an internal combustion piston at a reasonable cost is provided. A modified surface layer is formed by injecting injection powders containing a reinforcing element to be collided with an Al—Si alloy-based piston obtained by casting and forging by injecting under predetermined conditions, the reinforcing element being diffused and penetrated in the piston to improve the strength thereof. When a function, such as fuel modification, is imparted to the modified surface layer, an element exhibiting a photocatalytic function by oxidation, such as Ti, Sn, Zn, Zr, or W, is selected as the reinforcing element.

Abstract: A method for surface treatment capable of easily improving a mechanical strength of an internal combustion piston at a reasonable cost is provided. A modified surface layer is formed by injecting injection powders containing a reinforcing element to be collided with an Al—Si alloy-based piston obtained by casting and forging by injecting under predetermined conditions, the reinforcing element being diffused and penetrated in the piston to improve the strength thereof. When a function, such as fuel modification, is imparted to the modified surface layer, an element exhibiting a photocatalytic function by oxidation, such as Ti, Sn, Zn, Zr, or W, is selected as the reinforcing element.

Abstract: A piston allowing a lubrication layer of a resin coating with a low friction coefficient to be tightly adhered to a skirt portion of a piston for an internal combustion engine, with low friction, superior wear resistance, and superior anti-seizing properties and that can reduce wear of a cylinder inner wall even if the lubrication layer is peeled off or abraded, is provided. Metal or ceramic fine particles having an average particle diameter of 20 ?m to 400 ?m are injected with compressed air or compressed nitrogen as a mixture fluid onto the skirt portion of the piston, made of an aluminum alloy and produced by a method such as casting or forging, at an injection speed of 80 m/s or more or an injection pressure of 0.2 MPa or more to be collided with the skirt portion, thereby uniformly making a microstructure of a piston base material fine-grained in a depth range of 1 ?m to 15 ?m from a surface of the skirt portion and forming a modified layer with an activated surface.

Abstract: There is provided a method for surface treatment of a sliding portion of a product, which is an economical method, has less risk of polluting the working environment, or causing a fire by the powder dust, and yet enables high lubricativeness to be achieved, and many concavities to be formed on the sliding portion while simultaneously providing lubricativeness. Injection particles, obtained by blending soft-metal solid lubricant particles the surfaces of which have been oxidized and layered-structure solid lubricant particles, are injected onto a surface of the sliding portion of the product to be treated at an injection speed of 150 m/sec or more, thereby to diffuse and penetrate the surface to form a layer of the injection particles, and to form many concavities on the surface of the sliding portion.

Abstract: A functional sheet which exercises desired actions such as healing effect in high efficiency, without restriction by its use condition and the like is provided. A functional sheet 1 which exercises functions such as healing effect, relaxation effect, decomposition and removal of harmful substances according to complex functions such as generation of minus ions and/or photocatalyst function, by supporting a photocatalyst powder 10 such as titania (TiO2), tin oxide (SnO), zinc oxide (ZnO), SnO2, ZrO2, and WO3 which is oxidized in a structure of which a bond with oxygen is decreased as goes from its surface into the inside gradually, and a radioactive powder 20 containing a natural radioactive substance such as thorium (Th), for example, the powder of monazite, in a condition in which they are mutually brought in contact or adjacent, on a carrier 30 which forms a sheet shape composed by entangling a lot of fibers such as nonwoven fabric.

Abstract: The present invention provides a surface-oxide abrasion-resistant lubricant coating that can maintain high lubricity for a long time without wear of a base material and a coating or damage to an object to be contacted by a simpler method and with less expensive material. A mixed fluid of a compressed gas and fine-particle powders of two soft metals having lower hardness and lower melting point than the base material of a sliding contact portion is ejected onto a surface of the sliding contact portion. The fine-particle powders of the soft metals are made to react with oxygen in the compressed gas at the surface of the sliding contact portion to form a metal-oxide film with high melting point composed of metal oxides of the two soft metals, one of the metal oxides having higher hardness than the other. This metal-oxide film with high melting point includes a coating having a thickness of 0.

Abstract: An abrasive cleaning agent is provided which can be used for a polishing process for polishing a surface of a workpiece to form a mirror surface, which suppresses generation of static electricity and adhesion of stains to the workpiece, which decreases a crushing ratio, and which has a low environmental burden when the abrasive cleaning agent is disposed of. The above abrasive cleaning agent includes an elastic material containing a soluble nitrogen substance as a primary component, which is obtained from tubers of devil's tongue and which contains mannan as a primary component, and a 10% to 30% of water; and 1 to 30 percent by weight, with respect to the elastic material, of abrasive grains of size #220 or less, which are supported on surfaces of the elastic material and/or are buried therein, so that the grain diameter on the whole is in the range of 88 to 1,190 ?m.

Abstract: A fuel reformer which can improve fuel cost is provided. The fuel reformer 1 is formed by filling a granular catalytic material 10 provided with a metal oxide layer having an oxygen deficit tilting structure formed on the surface by shot peening in a process chamber 24 formed in a casing 20 having a fuel inlet 21 and an outlet 22. The fuel introduced into this fuel reformer 1 is activated by contact with the metal oxide layer 12 formed on the surface of said catalytic material 10 so that the fuel cost of the combustion apparatus to which the fuel is supplied is improved.

Abstract: [Object] To provide a lubricant for metallic material working and a method of press working a metallic material that makes it possible to improve the working accuracy of a press worked product and prolong the life of the die assembly beyond prior levels of life. [Solution] A lubricant for metallic material working comprises a mixture of a sulfur-based extreme pressure agent, an organic zinc compound, a calcium-based additive, and an ester compound, with lubricant base oil. The sulfur-based extreme pressure agent has a sulfur content of 5% by weight or higher based on the total weight of the lubricant. The organic zinc compound has a zinc content of 0.5% by weight or higher based on the total weight of the lubricant. The calcium-based additive has a calcium content of 0.5% by weight or higher based on the total weight of the lubricant. And the ester compound occupies a content of 1.0% by weight or higher based on the total weight of the lubricant.

Abstract: Occurrence of a powder dust explosion is prevented in a photocatalyst coating method of forming a titania layer by injection of titanium powder. Powder of titanium or titanium alloy is injected on a surface of a product to be treated composed of metallic product, ceramic, or mixture thereof, with compressed gas having inert gas as a principal component containing oxygen from 0 to 15% by mass, and the titanium in the powder of titanium or titanium alloy is diffused and oxidized on the surface of the product to be treated to form a titania layer.

Abstract: A method for surface treatment capable of easily improving a mechanical strength of an internal combustion piston at a reasonable cost is provided. A modified surface layer is formed by injecting injection powders containing a reinforcing element to be collided with an Al—Si alloy-based piston obtained by casting and forging by injecting under predetermined conditions, the reinforcing element being diffused and penetrated in the piston to improve the strength thereof. When a function, such as fuel modification, is imparted to the modified surface layer, an element exhibiting a photocatalytic function by oxidation, such as Ti, Sn, Zn, Zr, or W, is selected as the reinforcing element.