摘要:
The invention provides a method of producing a grain-oriented electrical steel sheet of the complete solid solution nitrided type that is good in glass film formation and excellent in magnetic properties, which method comprises: C: 0.025 to 0.09%, hot-rolling the steel slab containing Si: 2.5 to 4.0% and acid-soluble Al into a hot-rolled steel strip; controlling the rate at which N contained in the hot-rolled steel strip is precipitated as AlN to a precipitation rate of 20% or less; conducting hot-rolled strip annealing and cold rolling conducting decarburization-annealing combined with primary recrystallization by during the former part of the process in an atmosphere whose PH2O/PH2 is 0.30 to 0.70 and then during the latter part thereof in an atmosphere whose PH2O/PH2 is 0.20 or less, thereby making the circular equivalent average grain diameter of the primary recrystallization grains 7 μm to less than 18 μm; nitriding the strip as it travels in a mixed gas of hydrogen, nitrogen and ammonia; controlling the steel strip oxygen concentration before secondary recrystallization annealing calculated based on strip thickness of 0.30 mm (oxygen content: So) to 450 ppm to 700 ppm inclusive; applying a coat of annealing separator; and then conducting secondary recrystallization annealing in an atmosphere that, while the temperature at the hottest coil outer periphery point is between room temperature and 950° C., is controlled to a nitrogen atmosphere containing oxygen: 25 to 75% wherein the balance is hydrogen and PH2O/PH2 is 0.01 to 0.15.
摘要:
A golden ornament includes a base material; a Ti coating film which is formed on a surface of the base material in an atmosphere of an inert gas other than nitrogen and whose Ti atom content is constant in the thickness direction; a TiN gradient coating film which is formed on the Ti coating film and whose N atom content has a gradient in the thickness direction; a TiN coating film which is formed on the TiN gradient coating film and whose contents of Ti atoms and N atoms are constant in the thickness direction; an Au—TiN mixture gradient coating film which is formed on the TiN coating film and whose Au atom content has a gradient in the thickness direction; and an Au—TiN mixture coating film which is formed on the Au—TiN mixture gradient coating film and whose contents of Au atoms, Ti atoms, and N atoms are constant in the thickness direction. The golden ornament may further include an Au coating film or an Au alloy coating film which is formed on the Au—TiN mixture coating film and whose Au atom content is constant in the thickness direction.
摘要:
Prvided is a catalyst degradation preventing apparatus of a catalyst device containing a catalyst component that comes into contact with gas to chemically change the gas, including a burner for burning a fuel by combustible air to generate a gas containing nitrogen oxides by combustion, an endothermic device for absorbing heat from gas, a catalyst device having a catalyst component for decreasing nitrogen oxides contained in the gas after passing through the endothermic device, and a first poisoning substance removing device for removing a poisoning substance containing at least sulfur, which is contained in the fuel and adsorbs to a catalyst component or reacts with the catalyst component to form a compound. According to the apparatus, the decrease in performance of the catalyst device is prevented, and the effect of decreasing pollution can be retained over a long period of time.
摘要:
First, to decrease an amount of emitted nitrogen oxides to zero as much as possible and also decrease an amount of emitted carbon monoxide to a permissible level. Second, to save energy on combustion at a low air ratio close to 1.0. Third, to attain a stable air ratio control in a low air ratio combustion region.Included are a combustion step in which hydrocarbon-containing fuel is burned by the burner to generate gas free of hydrocarbons but containing oxygen, nitrogen oxides and carbon monoxide, an endothermic step in which endothermic device is used to absorb heat from gas generated in the combustion step, a hazardous-substance decreasing step in which the gas is brought into contact with an oxidation catalyst after the endothermic step to oxidize carbon monoxide contained in the gas by oxygen and reduce nitrogen oxides by carbon monoxide, and a concentration ratio adjusting step in which a concentration ratio of oxygen, nitrogen oxides and carbon monoxide in gas on the primary side of the oxidation catalyst is adjusted to a predetermined concentration ratio on the basis of concentration ratio characteristics of the burner and the endothermic device by using the air-ratio adjusting device of the burner.
摘要:
A transmitting system includes an Internet connecting unit, directly or indirectly connected with the Internet, which allows a plurality of communication units to perform communication through the Internet, and a media converter, connected with the Internet connecting unit by the first transmission medium, which converts a signal from the first transmission medium into a signal to a second transmission medium, converts a signal from the second transmission medium into a signal to the first transmission medium, and has a function of linking to the communication units. The transmitting system also includes a signal distributor, connected with the media converter and each of the plurality of communication units by the second transmission medium, which distributes a signal from the media converter and transfers the signal to the communication units, and transfers a signal from the communication units to the media converter.
摘要:
A video receiving system has one main-contract video receiver and at least one sub-contract video receiver connected to the main-contract video receiver via a network.The sub-contract video receiver has a) a video reception control unit which, when a video reception tuner unit receives a video signal, allows the video reception tuner unit to receive the video signal of a limited predetermined channel if a network connection detecting unit detects an unestablished connection with the main-contract video receiver; and b) a display signal output unit which outputs a display signal corresponding to the video signal received by the video reception tuner unit.
摘要:
Provided is a hydrogen generator which is capable of reducing a size of an entire apparatus and reducing a running cost by utilizing heat of a heat exchanger (1) for hydrogen reforming in a reformer (2), and which can particularly preferably be used in a facility such as a hospital, a restaurant, or a hotel utilizing both steam and electricity, and a fuel cell system using the hydrogen generator. The hydrogen generator includes the reformer (2) for generating hydrogen H2 from a fuel gas G and steam H2O incorporated in a fuel gas passage (12) of the heat exchanger (1) provided with a water pipe (13). The hydrogen generator utilizes a part of heat of the heat exchanger (1) for hydrogen reforming performed in the reformer (2). The hydrogen generator includes the reformer (2), a converter (3) for generating hydrogen from carbon monoxide generated in the reformer and steam, and a CO remover (4) for removing a carbon monoxide gas generated in the converter (3). The reformer (2), the converter (3), and the CO remover (4) are arranged in the flue gas passage (12) of the heat exchanger (1).
摘要:
The present invention provides a TV terminal embedded communication apparatus, which has a shape compliant with predetermined existing standard dimensions of a type of TV terminal set on a wall surface, including a TV antenna terminal connectable to a TV antenna terminal of an existing TV terminal connected to a coaxial cable connected to a TV antenna, a communication connector terminal, a coaxial communication processing function section connected to the TV antenna terminal and having a coaxial communication function, a connector communication processing function section connected to the communication connector terminal and having a communication connector communication processing function and a data transfer function section that transfers data between the coaxial communication processing function section and the connector communication processing function section, and can construct a high-speed home network without removing the existing TV antenna terminal.
摘要:
A communication system includes communication devices; a switch device having coaxial terminal units to which the communication device are connected, a switch unit of entirely or individually connecting the coaxial terminal units, and a switch control unit of controlling the connection status of the switch unit; and a transmittal right control device. The transmittal right control device is connected to the terminal, and manages the connection status of the switch unit, receives from the communication devices requests for time for communication with other communication devices, determines assignment of time for communications between the communication devices, notifies the communication devices of the assignment, and instructs the switch control unit not to make signals interfere among the communication devices in different combinations for communications in the same time period.
摘要:
Grain oriented silicon steel sheet on which is formed an insulating coating having a thickness that is not less than 2.5 .mu.m that imparts tension to the steel sheet which does not have an inorganic mineral layer formed during a final annealing step (glass film) and a method of forming on grain oriented silicon steel sheet an insulating coating that is not less than 2.5 .mu.m thick and which imparts tension to the steel sheet which does not have the inorganic mineral layer (glass film) that forms during finish annealing, and a method of forming a tensioning insulating coating on grain oriented silicon steel sheet which has been finish annealed and does not have an inorganic mineral surface layer (glass film), after first forming a layer of SiO.sub.2 not less than 0.001 .mu.m thick on the oriented silicon steel sheet.