Abstract: A reaction gas or a gas containing a reaction gas is blown through blowing nozzles onto a steel material in a chemical vapor deposition treating chamber at a velocity sufficient to forcibly remove reacted products from reacted surfaces of a steel material while suppressing irregular thickness of a deposited film.

Abstract: A silicon single crystal manufacturing apparatus according to the CZ method which includes a partition member for dividing a quartz crucible into a single crystal growing section and a material melting section and having at least one small hole for permitting the passage of molten silicon, and a heat keeping cover for covering the partition member and the material melting section. The heat keeping cover is made of a sheet of metal selected from the group consisting of Ta, Mo and W and containing Fe 50 ppm or less and Cu 10 ppm or less. The metal sheet includes a surface layer composed of a silicon-enriched layer, and the depth of an area of the silicon-enriched layer in which the content of Si is greater than the contents of Fe and Cu at the same position therein is not less than 10 .mu.m from the surface. The content of Fe in the silicon-enriched layer is not greater than 5 ppm.

Abstract: Molten metal is put under pressure of up to 10 atmospheres in a covered ladle and a gas soluble in the metal is bubbled through the melt. Some gas goes into solution, while the remainder rises in bubbles and brings inclusions suspended in the molten metal up to the surface. Then the pressure is lowered, after which gas comes out of the solution in fine bubbles which also bring impurity inclusions up to the surface. In another method molten steel is refined at pressures not exceeding atmospheric pressure in a covered ladle equipped for evacuation and equipped for bubbling gas through the molten steel bath. Bubbling followed by pressure reduction can then be performed to form two stages of cleaning. Heat may be added for compensating the cooling effect of gas expansion.

Abstract: The present invention relates to a method for producing high silicon steel strip in a continuous treatment line through chemical vapor deposition (called "CVD" hereinafter), wherein the steel strip is subjected continuously to siliconization at temperatures between 1023.degree. and 1200.degree. C. by CVD in a non-oxidizing gas atmosphere containing SiCl.sub.4 between 5% and 35% in molar fraction. Subsequently a diffusion treatment is performed in a non-oxidizing gas atmosphere not containing SICl.sub.4 for diffusing Si uniformly throughout the steel strip, which is then cooled and coiled. If required, the steel strip may be coated with an insolating film and subjected to a baking treatment, before cooling and coiling.

Abstract: A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combusion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets disposed centrally of the burner tile, and wherein the combustion air outlets and fuel gas outlets are formed and disposed with specified jetting angles and distances to produce burning without oxidation.

Abstract: A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets disposed centrally of the burner tile, and wherein the combustion air outlets and fuel gas outlets are formed and disposed with specified jetting angles and distances to produce buring without oxidation.

Abstract: A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets disposed centrally of the burner tile, and wherein the combustion air outlets and fuel gas outlets are formed and disposed with specified jetting angles and distances to produce burning without oxidation.

Abstract: A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets disposed centrally of the burner tile, and wherein the combustion air outlets and fuel gas outlets are formed and disposed with specified jetting angles and distances to produce burning without oxidation.

Abstract: A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets disposed centrally of the burner tile, and wherein the combustion air outlets and fuel gas outlets are formed and disposed with specified jetting angles and distances to produce burning without oxidation.

Abstract: A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets disposed centrally of the burner tile, and wherein the combustion air outlets and fuel gas outlets are formed and disposed with specified jetting angles and distances to produce burning without oxidation.

Abstract: This invention relates to a continuously treating line for a steel band, having a heating furnace by directly flaming. For heating the steel band with causing reduction, the heating furnace of directly flaming system is provided with a plurality of heating burners of reduction system which may form non-equilibrium range of the air and the fuel in a flame, that is, a reduction range, wherein the heating burners are positioned at predetermined arrangement with respect to the steel band and at a certain pitch predetermined in relation with an inner diameter of the burner in a line running direction.The treating line has said heating furnace constructed as mentioned above and a subsequent atmosphere furnace, and said atmosphere furnace may be provided with a sealing chamber having various means for avoiding invasion of the outer air.

Abstract: An apparatus for hot dip plating on one side of a metal strip, comprising a plurality of nozzles disposed at an oblique angle to the direction of travel of the strip and having outlets which are tilted toward the edges of the strip, whereby splashing of the plating material is avoided, and occurence of plating material on the non-plated side of the strip is also avoided, and the plating is regular and without irregularity of plating or areas lacking plating material.

Abstract: A vertical type electro-galvanizing apparatus, which comprises: a U-shaped electro-galvanizing tank including a first vertical path (12) at a steel strip inlet side, a second vertical path (13) at a steel strip outlet side and a horizontal path (14) for communicating the lower end of the first vertical path (12) to the lower end of the second vertical path (13); a first conductor roll (2), arranged above the first vertical path (12), for directing a steel strip (5) downwardly into the first vertical path (12) and applying electricity to the steel strip (5); at least one sink roll (3, 3'), arranged in the horizontal path (14), for upwardly reversing the travelling direction of the steel strip (5); a second conductor roll (4), arranged above the second vertical path (13), for directing the steel strip (5) upwardly from the second vertical path (13) and applying electricity to the steel strip (5); at least one first electrode plate (6, 6) arranged in the first vertical path (12); at least one second electrode pl

Abstract: An apparatus for continuously cooling a heated metal plate lying horizontally, which comprises: an upper cooling water ejecting means, arranged above the metal plate in parallel to the width direction thereof, for ejecting cooling water onto the upper surface of the metal plate; a water tank, arranged below the metal plate, for receiving cooling water; and a lower cooling water ejecting means having a lower cooling water ejecting bore, arranged in the water tank in parallel to the width direction of the metal plate. The lower cooling water ejecting means ejects, in the form of a jet stream, cooling water from the lower cooling water ejecting bore together with cooling water received in the water tank, onto the lower surface of the metal plate. The above-mentioned jet stream is surrounded by a jet stream guide duct arranged between the lower cooling water ejecting means and the lower surface of the metal plate.

Abstract: A uniform plating treatment is carried out on one-side of a steel strip in that the strip is travelled horizontally over a still surface of a plating bath while the plating bath is jetted onto the one-side of the strip, and the one-side is positively given on its edges a plating flow running in width of the strip outwardly from the edges and the other part except the edges is given the plating flow running in length of the strip.

Abstract: A uniform plating treatment is carried out on one-side of a steel strip in that the strip is travelled horizontally over a still surface of a plating bath while the plating bath is jetted onto the one-side of the strip, and the one-side is positively given on its edges a plating flow running in width of the strip outwardly from the edges and the other part except the edges is given the plating flow running in length of the strip.

Abstract: In an electrolytic treating on a strip of metal, namely electroplating, electrolytic degreasing or any other electrolytic treatment on a strip of metal, in order to fludify the liquid between the plane parallel plate electrodes immersed inside the tank or between the plane parallel electrodes and the metal strip passed therebetween by jetting the liquid from the nozzles into the tank, a plane dummy plate or plates are arranged between the nozzles and the plane parallel plate electrodes to adjoin the electrodes and extend in the direction of the nozzles in the same planes as the electrodes to thereby prevent the damping of the jet flow velocity. Moreover, the plane parallel plate electrodes have their edges on the nozzle side arranged in positions at which the half-value width of the nozzle jets from the nozzles overlap each other to thereby ensure a uniform distribution of the jet flow velocity.

Abstract: A system for measuring and controlling the concentration of an emulsion, wherein a measuring pipe included in an emulsion feed line is fitted with an emulsion concentration-detecting device; the ultrasonic wave transmitter of the concentration-detecting device sends forth ultrasonic waves into an emulsion running through a circulation line so as to be caught by an ultrasonic wave receiver; the concentration-detecting device generates an output signal corresponding to the velocity with which ultrasonic waves are propagated from the ultrasonic wave transmitter to the ultrasonic wave receiver, utilizing the fact that the velocity of said propagation is substantially proportional to the concentration of an emulsion flowing through the circulation line, and also delivers an output signal corresponding to temperature variation from a detection terminal through a transducer to a circuit for correcting the measured concentration of the emulsion according to temperature variation in view of the fact that the propagati