Abstract: The method of manufacturing a metal component includes: generating a laser beam; splitting the laser beam into a first laser beam and a second laser beam; reflecting the second laser beam; irradiating the first laser beam through a first condensing optical system to an irradiation position on a surface of a workpiece made of metal, wherein the first condensing optical system condenses the first laser beam; irradiating the second laser beam through a second condensing optical system to the irradiation position, wherein the second condensing optical system condenses the second laser beam; adjusting a spot diameter ratio, wherein the spot diameter ratio is a ratio of a first spot diameter to a second spot diameter, wherein the first spot diameter is a diameter of the first laser beam on the irradiation position, wherein the second spot diameter is a diameter of the second laser beam on the irradiation position; and moving the irradiation position to weld the workpiece.

Abstract: A flexible flame-retardant chlorinated polyolefin resin composition contains no plasticizer, generates almost no halogen-containing gas and no significant amounts of smoke during combustion. Uses thereof are also given. The chlorinated polyolefin resin composition comprises 50-95 parts of a chlorinated polyolefin, 50-5 parts of a copolymer of ethylene/a compound having ethylenic unsaturated groups/carbon monoxide (the total amount of this copolymer and the chlorinated polyolefin being 100 parts), 10-100 parts of a metal hydroxide, and 10-100 parts of calcium carbonate (“parts” herein indicates parts by weight); a formed article formed by shaping this chlorinated polyolefin resin composition; and a process for imparting flame retardancy using this chlorinated polyolefin resin composition.

Abstract: There is disclosed a multi-layer laminate molding having a layer structure that a main material layer made mainly of a polyethylenic resin at the outer side and an ethylene-vinyl acetate copolymer saponified product layer or polyamide resin layer at the inner side are laminated through at least an adhesive material layer, the adhesive material layer comprising a resin composition containing (A) 60 to 95% by weight of at least one resin selected from the-group consisting of (1) a high density polyethylenic resin having specified physical properties, (2) a linear low density polyethylenic resin having specified physical properties, (3) a modified high density polyethylenic resin obtained by grafting unsaturated carboxylic acid and the like onto the above (1), and (4) a modified linear low density polyethylenic resin obtained by grafting unsaturated carboxylic acid and the-like onto the above (2), and containing at least 0.

Abstract: A polyethylenic resin composition comprising: at least one high density polyethylenic resin selected from (a) a high density polyethylenic resin (Resin A) and (b) a modified high density polyethylenic resin as derived by grafting on the Resin A a monomer of unsaturated carboxylic acid or its derivative (Resin B), at least one linear low density polyethylenic resin selected from (c) a linear low density polyethylenic resin (Resin C) and (d) a modified linear low density polyethylenic resin as derived by grafting on the Resin C the monomer as described in (b) above (Resin D), and (e) a linear very low density polyethylenic resin (Resin E) having a density (g/cm.sup.3) of at least 0.890, but less than 0.910, and a melting point of 110.degree. to 125.degree. C. This polyethylenic resin composition is excellent in fuel oil resistance, low temperature impact resistance, and heat resistance, and provides a material having affinity or adhesive properties to various resinous and metallic materials.

Abstract: A metallic carrier composed of an end face portion formed in at least one of the axial end portions of a honeycomb body and an outer circumferential reinforcing layer in which foils in a range from the outermost layer to a quarter of the total number of layers are joined together in the axial intermediate portion. Thus, the metallic carrier is flexible in expansion and shrinkage. Further, the honeycomb body and a jacket are joined to each other mainly at the outer circumference of the outer circumferential reinforcing layer of the honeycomb body, to reduce thermal stress developed between the honeycomb body and jacket while maintaining the strength against a high temperature, to thereby prevent the metallic carrier from being ruptured.

Abstract: When soldering a honeycomb body formed by alternately piling flat foils (plates) and corrugated foils (plates), a binder liquid is sucked up from the end face of the honeycomb body to form a binder streak in a space defined by contacting portions of the flat foil (plate) and corrugated foil (plate), a solder is scattered and applied onto the binder streak, and the honeycomb body is then dried and heated to effect a soldering of the honeycomb body. According to this method, soldering can be accomplished only in the vicinity of the contacting portions of the flat foil (plate) and corrugated foil (plate), with a desired soldering structure.

Abstract: A steel having good wear resistance which contains 0.55-1.10% of C, up to 2.0% of Si, up to 2.0% of Mn, 12.0-25.0% of Cr and particularly suitable as a material for piston rings or rocker arms. Further addition of 0.05-1.10% of Al to the above steel gives a steel improved in properties for spheroidization of carbides and uniformization of carbide particle size, leading to further enhancement of wear resistance. If required 0.20-2.0% of Ni may be added to the steels, whereby corrosion resistance, toughness and hardenability are improved. An addition of at least one of 0.2-3.0% of Mo, 0.1-1.5% of V and 0.05-0.70% of Nb to the steels improves high-temperature strength and surface hardness. The steel is surface treated by gas nitriding of the like in a surface area for sliding contact with an opponent member.

Abstract: A steel having good wear resistance which contains 0.55-1.10% of C, up to 2.0% of Si, up to 2.0% of Mn, 12.0-25.0% of Cr and particularly suitable as a material for piston rings or rocker arms. Further addition of 0.05-1.10% of Al to the above steel gives a steel improved in properties for spheroidization of carbides and uniformization of carbide particle size, leading to further enhancement of wear resistance. If required 0.20-2.0% of Ni may be added to the steels, whereby corrosion resistance, toughness and hardenability are improved. An addition of at least one of 0.2-3.0% of Mo, 0.1-1.5% of V and 0.05-0.70% of Nb to the steels improves high-temperature strength and surface hardness. The steel is surface treated by gas nitriding of the like in a surface area for sliding contact with an opponent member.

Abstract: An exhaust gas purifying catalyst of this invention comprises a heat resistance stainless steel catalyst support, an oxide film containing zirconium oxide formed on the heat resistance stainless steel catalyst support, an activated alumina catalyst carrier layer formed on the oxide film, and at least one metal catalyst loaded in the activated alumina catalyst carrier layer. Thus, the activated alumina catalyst carrier layer's come-off from the catalyst support and the oxidation of the catalyst support are suppressed at the same time, and the conversions of the hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NOx) are also improved.

Abstract: When soldering a honeycomb body formed by alternately piling flat foils (plates) and corrugated foils (plates), a binder liquid is sucked up from the end face of tile honeycomb body to form a binder streak in a space defined by contacting portions of the flat foil (plate) and corrugated foil (plate), a solder is scattered and applied onto the binder streak, and the honeycomb body is then dried and heated to effect a soldering of the honeycomb body. According to this method, soldering can be accomplished only in the vicinity of the contacting portions of the flat foil (plate) and corrugated foil (plate), with a desired soldering structure.