摘要:
Disclosed is a method of refining of a high purity steel capable of effectively lowering impurities in molten steel into respective ultra-low ranges. In secondary refining for molten steel after a molten iron prerefining process and a converting process, a reducing agent and a flux are added on the bath surface within a ladle containing the molten steel decarburized in a converter so that the composition of slag on the bath surface is adjusted in such a manner that the total concentration of FeO and MnO becomes 5 wt % or less, and subsequently, impurities in the molten steel are effectively lowered into respective ultra-low ranges using a RH vacuum degassing unit.
摘要:
A process for producing an extremely low carbon steel in a top- and bottom-blown converter. The process is characterized in top-blowing a mixed gas of oxygen gas and an inert gas onto a molten steel in the top- and bottom-blown converter. The mixed gas is blown through a top-blowing lance at the final decarburization stage, while a gas (selected from a group consisting of an inert gas, oxygen gas and a mixture of oxygen and an inert gas) is bottom-blown into the molten steel in the converter.
摘要:
Method for producing highly purified silicon for use in solar cells by a single solidification purification, pouring silicon into a mold and gradually fractionally solidifying it while solidifying the liquid surface, followed by purifying the solidified silicon by zone melting or continuous casting using an electromagnetic mold, or by zone melting in combination with continuous casting, and optionally causing directional solidification to concentrate impurities, leaching and recycling.
摘要:
A process for producing a steel in at least two converters using a great or substantial amount of an iron-bearing cold material. The iron-bearing cold material and a carbonaceous material are supplied into one of the converters under the presence of a molten iron or a preliminarily treated molten iron and are melted therein under oxygen-blowing to obtain a preliminarily treated molten iron containing a high content of carbon, and the preliminarily treated molten iron is refined in the other converter under oxygen-blowing to obtain a molten steel having the given composition.
摘要:
A process for continuously casting steel slabs employing a molten steel containing an oxygen concentration of 30 ppm or less, preferably, 20 ppm or less, using a straight immersion nozzle to which an inert gas is not injected, and disposing a static magnetic field generator on the back surface of the mold for applying the strong static magnetic field to the molten steel within the mold, thereby restricting the flow of the molten steel. With this process, it is possible to prevent the nozzle blocking, and hence to obtain the steel slabs excellent in the internal and surface qualities.
摘要:
According to one embodiment, an electronic apparatus includes a sound characteristic output module configured to analyze audio data in video content data, thereby outputting sound characteristic information indicative of sound characteristics of the audio data. A talk section detection process module detects talk sections in which talks are made by persons, which are included in the video content data, on the basis of the sound characteristic information, and classifies the detected talk sections into a plurality of groups which are associated with different speakers. A display process module displays, on a time bar which is representative of a sequence of the video content data, a plurality of bar areas indicative of positions of the detected talk sections in the sequence of the video content data, in different display modes in association with the groups.
摘要:
The present invention provides a metallic coating having a sheen and having a discontinuous structure at high productivity and low cost by using sputtering. A resin product includes a resin base material, and a metallic coating having a sheen and a discontinuous structure that is deposited on the resin base material so as to include a portion in which a high-formation metal that relatively readily forms a discontinuous structure when using vacuum vapor deposition is sputtered, and thereafter, a low-formation metal that does not relatively readily form a discontinuous structure when using vacuum vapor deposition is sputtered. The high-formation metal and the low-formation metal are selected from at least two species of metals whose crystal structures are identical and whose lattice constant difference is within 10%.
摘要:
The wave-transmitting cover comprises a transparent resin layer, a base layer and a decorative layer, and the decorative layer contains a lustered piece. The method for producing it comprises a film-forming step of forming a film that has a print face and a deposition design face formed thereon, a shaping step of shaping the film, a first molding step of molding one of a transparent resin layer or a base layer thereon to give a first molded part, and a second molding step of forming the other of the transparent resin layer or the base layer on a surface of the first molded part where the film is provided.
摘要:
The present invention relates to a sheet-like medical covering member, which covers the surface of a medical device attached inside a living body and/or to a percutaneous site, and thereby allows the medical device to be fixed inside a living body and/or to a percutaneous site, so as to allow the medical device to stably stay there for a long period of time, wherein the sheet-like medical covering member is modified by a hydrophilic surface treatment, and/or by a coating treatment with calcium phosphate ceramics or with a composition comprising a biopolymer.
摘要:
A metallically gross layer decorative molded article for use in the beam path of a radar device has a luxurious metallic design similar to the color tone of a chrome plating and the like, does not hinder the transmission of radio wave, and has excellent adhesion with a substrate. The metallically gross layer decorative molded article includes a substrate comprised of a transparent resin layer, a tin and/or tin alloy layer provided on a back surface of the substrate, and a design paint layer provided on a back surface of the tin and/or tin alloy layer.