摘要:
A pressure molding apparatus comprises a furnace defining a heating space for accommodating a mold assembly including a mold body charged with a raw material to be molded, and a pressure piston for pressurizing the raw material; heating means for heating the heating space; and load imposing means for imposing a load on the pressure piston to mold the raw material. The load imposing means includes at least one weight means and weight supporting means. The weight supporting means is selectively set in a load-free state in which the weight supporting means supports the weight means so that the weight of the weight means is not imposed on the pressure piston, and a load imposed state in which the weight supporting means releases the support of the weight means so that the weight of the weight means is imposed on the pressure piston.
摘要:
A cable monitoring system, which monitors failure of a plurality of cables connecting a power supply and a welding gun, has voltage detection lines connected to arbitrary two points of each of the cables, an insulating transformer a primary side of which is connected to the voltage detection lines of each cable, and a failure detector connected to a secondary side of the insulating transformer and detecting failure of each cable based on voltage on the secondary side of the insulating transformer for each cable.
摘要:
A pressure transducer comprising a silicon diaphragm on which a semiconductor strain gauge is formed and which has a diaphragm portion deformable in response to a pressure, an insulating support which is made of borosilicate glass having the silicon diaphragm rigidly mounted thereon and which is provided with a pressure introducing hole in its central part, a metallic support which is cylindrical, which is made of an iron-nickel alloy similar in the thermal expansion coefficient to the borosilicate glass and on which the glass insulating support is rigidly mounted, and a metallic housing within which the integrated structure consisting of the silicon diaphragm, the glass insulating support and the metallic support is arranged; the silicon diaphragm, the insulating support and the metallic support being joined by the anodic bonding, the metallic support being rigidly welded to the metallic housing at its lower end part.
摘要:
A method of forming a thin film pattern on a base having a step portion. This method comprises a first step of forming a thin film of given material on the base, a second step of forming a predetermined pattern of a first photoresist film on said thin film at one of a first portion including a lower part of the step portion and a second portion including an upper part of the step portion, a third step of forming a predetermined pattern of a second photoresist film on said thin film at the other of the first and second portions and a fourth step of applying ion-milling to said thin film of given material using masks said first and second photoresist film patterns formed on said thin film at the first and second portions.
摘要:
An integrated circuit package in which semiconductor elements mounted on an insulating substrate, ends of lead pieces introduced from the outside and wires that electrically connect them, are accommodated in a cell that is air-tightly defined by the substrate, a cap and a sealing glass. The lead pieces are composed of an alloy having a coefficient of thermal expansion nearly equal to, or smaller than, the coefficient of thermal expansion of the substrate. The alloy is an iron alloy which contains nickel and cobalt, and having a martensite transformation temperture of lower than -55.degree. C.
摘要:
A strain gauge is formed on one main surface of a semiconductor single crystal substrate while an insulating oxide film is formed on the other main surface of the substrate. A metal junction layer including several layers inclusive of eutectic alloy layers is formed on the surface of the insulating oxide film and the thus prepared structure is mounted on a metal strain generator. By heating this assembly to temperatures approximating to the eutectic point of the eutectic alloy layer, the semiconductor substrate and the metal strain generator are joined together.
摘要:
A semiconductor pressure transducer comprising a piezoresistive semiconductor diaphragm, a cylindrical stem made of a glass having a thermal expansion coefficient approximating that of the diaphragm and hermetically bonded by anodic bonding to the latter, and a cylindrical holder hermetically bonded by anodic bonding to the cylindrical stem is disclosed. The holder is made of a ferromagnetic alloy material containing Fe, Co and Ni and having a mean thermal expansion coefficient of 35.times.10.sup.-7 /.degree.C. or less within the temperature range between 30.degree. C. and 350.degree. C.
摘要:
A method of producing a sintered material having a high wearing resistance and damping capacity by mixing 5-30 wt. % of a powdery metal selected from the group consisting of lead, magnesium and graphite with the remainder of a powdery metal selected from the group consisting of iron, copper, aluminum, cast iron and alloys thereof, compression-molding the mixture, subjecting the same to plastic treatment and sintering the same by heating to a temperature above a recrystallization point of the matrix metal, and the sintered material thus produced.
摘要:
A semiconductor transducer comprising an improved strain-yielding body yielding a strain in response to the impartation of a force or displacement, and a semiconductor strain gauge bonded to the strain-yielding body. The improved strain-yielding body is made of an iron-nickel-cobalt alloy containing 28.2 to 31.0% by weight of nickel and 15.0 to 19.5% by weight of cobalt. This iron-nickel-cobalt alloy is initially heated up to a temperature above 600.degree. C. for the purpose of standard heat treatment for removing its internal strain. After the standard heat treatment, the iron-nickel-cobalt alloy is subjected to cold working at a working rate of more than and including 60%, and is then subjected to heat treatment at a temperature between 350.degree. C. and 600.degree. C. The heat-treated iron-nickel-cobalt alloy is shaped into the predetermined form of the strain-yielding body.
摘要:
A cable monitoring system, which monitors failure of a plurality of cables connecting a power supply and a welding gun, has voltage detection lines connected to arbitrary two points of each of the cables, an insulating transformer a primary side of which is connected to the voltage detection lines of each cable, and a failure detector connected to a secondary side of the insulating transformer and detecting failure of each cable based on voltage on the secondary side of the insulating transformer for each cable.