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JPH09182939A |
To provide an Fe-Ni alloy ingot reduced in shrinkage hole and with good yield as a forging billet for a shadow mask. A heat insulating means 6 housing an exothermic material 9 containing a metallic aluminum and an iron oxide into an open...
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JPH09174198A |
To provide a metallic cast billet for plastic working good in cast yield, less in unevenness of wt. thereof, easy to pour molten metal, very small in meniscus and good in internal quality. The metallic cast billet 6 is formed by solidify...
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JPH09164470A |
To improve a yield and to suppress inverse V segregation generated inside an ingot by preventing casting defect of shrinkage cavity, porocity, etc., mainly formed in ingot upper part in particular for an alloy tool steel. In the electros...
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JP2538753Y2 |
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JPH09150239A |
To improve the yield and operatability by providing a heat insulating seat plate having a smaller opening part than the opening area of an ingot mold and arranged between the bottom of an upper head frame and the upper surface of the ing...
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JP2617654B2 |
PURPOSE: To make assembling in off-line possible and to make assembling of plate bricks at the other place having good circumference possible by arranging an intermediate base plate including a cartridge type runner cutting off mechanism...
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JPH09122831A |
To prevent occurrence of defects, such as adhesion failure of joined surface, blow hole, sticking of impurity by making clean the joining surface of molten base steel and a joining material, applying a carburizing preventing treatment, a...
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JPH0924450A |
To uniformly grow the columnar crystal which is long in the radial direction, and to facilitate the post-treatment after the mold is released. The molten metal 22 is poured in a mold 12 through a nozzle 18a by pouring the molten metal 22...
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JPH08332563A |
PURPOSE: To improve the pouring performance and the feeder head effect by arranging an electromagnetic booster to a mold at the molten metal pouring side and impressing the electromagnetic force to the molten metal. CONSTITUTION: A super...
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JP2562276B2 |
A pouring pad is provided for use in a tundish during sequence continuous casting. The pouring pad has a plurality of concentric primary ridge portions adjacent to the location of impact of a pouring stream from a ladle with the pad. The...
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JPH08291344A |
PURPOSE: To produce a metallic block having high cleanliness at a low cost by melting and solidifying the metallic block under a specific condition, accumu lating inclusions near the surface thereof and removing the surface layer. CONSTI...
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JPH08281415A |
PURPOSE: To prevent the oxidation of the surface of liquid metal in a furnace by protecting the surface of the liquid metal by a liquid seal which is stable to the holding temp. in the furnace without correspondence to the liquid metal a...
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JP2545588B2 |
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JPH08267178A |
PURPOSE: To provide a steel dispersing fine oxides controlled in the composition into the steel, restraining the development of harmful MnS in the center segregation part and excellent in a hydrogen induced cracking resistant characteris...
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JP2540619B2 |
PURPOSE:To prevent the oxidation of a low melting metal by charging the heat resistant oil of the volume required for covering the front surface of the low melting metal in a furnace body into the furnace body so that the contact of the ...
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JPH08215792A |
PURPOSE: To produce a cast ingot having good surface equal to a bottom pouring ingot-making method with little equipping cost and working burden by arranging a cylindrical splash preventing tube in a mold. CONSTITUTION: The splash preven...
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JPH08206801A |
PURPOSE: To provide a heat insulation method capable of efficiently heat insulating a final solidified part of a large cross sectional continuously cast bloom. CONSTITUTION: At the time of obtaining the large cross sectional continuously...
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JPH08197231A |
PURPOSE: To provide a favorable method for removing an insulating material containing glassy hardness layer remained on an ingot from the ingot and a device therefor. CONSTITUTION: This device 3 is provided with a stirring blade 70, driv...
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JPH08187548A |
PURPOSE: To prevent the leakage of molten metal and to improve the yield of the molten metal by screwing an adjusting pipe at least at one end of a main pipe. CONSTITUTION: A recessed groove 10a is formed in the longitudinal direction of...
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JPH08176810A |
PURPOSE: To produce an alloy ingot of uniform composition at the time of producing the Al-high m.p. metal alloy ingot by fusion casting by avoiding the weight segregation due to the settling of a heavy intermetallic compd. crystallized i...
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JPH08174156A |
PURPOSE: To manufacture the ingot of the casting surface as excellent as that in the bottom pouring ingot making method by floating the refractory board having a pouring hole on the molten steel surface while the molten steel is poured, ...
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JPH08157931A |
PURPOSE: To obtain an effective additive composition for iron-making and steelmaking having no adverse effect on the characteristic of a steel, etc., by regulating nitrogen content to a prescribed value, composing additive composition of...
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JPH08150455A |
PURPOSE: To manufacture a tube by the centrifugal casting free from defects on the inner surface of the tube, and excellent in the yield by specifying the content of Al2O3, CaO, CaF3, MgO and SiO2. CONSTITUTION: The best way to prevent g...
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JPH08141703A |
PURPOSE: To simply obtain an ingot having shrinkage cavity in the center part, to shorten a solidifying time and to improve the production efficiency of an ingot by widening a cooling zone of the side wall of a metallic mold containing m...
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JPH08141702A |
PURPOSE: To provide a process for producing an Ni-Ti based alloy having excellent workability. CONSTITUTION: The Ni-Ti based alloy which consists of fine equiaxed crystal of a crystal grain size of ≤50μm and exhibits elongation of ≥...
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JPH08120358A |
PURPOSE: To stably produce an ingot having fine crystal and excellent surface characteristic at the time of hot-working by forming the bottom part of a cylindrical mold for casting to a specific shape, at the time of casting into the ing...
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JPH08117925A |
PURPOSE: To prevent the generation of a shrinkage in a thick part in the production of the casting having a variable-thickness part by mixing a hollow refractory grain with the apparent density and diameter specified and a solid refracto...
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JPH0871739A |
PURPOSE: To improve quality of a product ingot by removing the floating slag on the surface of molten metal after a moving scraping plate and fixed scraping plate are joined and the slag floating on the surface of molten metal is scraped...
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JPH0871734A |
PURPOSE: To produce an steel ingot having sound casting structure as the basic material and to obtain a uniform product by plastic-working after solidifying molten steel poured in an ingot case while stirring with a stirrer composed of r...
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JPH0818109B2 |
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JPH0811271B2 |
An exothermic composition comprises a particulate readily oxidisable metal such as aluminium, magnesium or silicon and an organic fluorine-containing compound, and usually an oxidising agent for the readily oxidisable metal. The preferre...
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JPH0833960A |
PURPOSE: To provide an insulating material which surely prevents contamination of molten steel occurring due to air oxidation and the reaction of insulating material and has a sufficient insulating function without damaging and eroding r...
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JPH084917B2 |
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JPH0820847A |
PURPOSE: To prevent cracks and surface roughness at the time of casting and blooming rolling by subjecting stainless steel contg. specified amounts of C, Si, Mn, P, S, Cr, Al, rare earth metals, alkaline earth metals and Y to casting and...
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JPH08279B2 |
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JPH083609A |
PURPOSE: To obtain a heat insulating material for steel making having an extremely outstanding heat insulating characteristic and handling property without requiring calcination by composing this heat insulating material of the reduced s...
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JPH083623A |
PURPOSE: To produce a slag removing material which does not generate smoke and stimulative smell and is low in radiation heat by sticking black dye slag consisting of iron oxide to inorg. ore using glue for adhesion. CONSTITUTION: The bl...
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JPH07323350A |
PURPOSE: To provide a riser heat insulating material for casting having a rapid exothermic property and an excellent property to sustain a heat insulating effect. CONSTITUTION: The fine powder of an aluminum compd. contg. 20 to 60wt.% fe...
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JPH07316678A |
PURPOSE: To prevent the temp. drop of molten brass, to eliminate the reaction between a covering flux and the alloy component and the entrainment of the flux by the molten brass and to obtain the ingot having a low content of nonmetallic...
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JPH07284895A |
PURPOSE: To provide a heat insulating material which is excellent in the heat insulatability of the molten steel in a tundish. CONSTITUTION: The heat insulating material which contains 20 to 30 wt.% MgO, 35 to 42 wt.% SiO2, 10 to 20 wt.%...
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JPH0790334B2 |
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JPH07251259A |
PURPOSE: To prevent the pouring of molten metal in the condition of lowering the molten metal temp., to make the molten metal running good and to improve the quality of a casting by again executing dipping-up of the molten metal after on...
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JPH07248190A |
PURPOSE: To enhance a heating efficiency by increasing a slit width of a horizontal section toward a radial direction of a crucible and specifying its size in the crucible having a plurality of slits longitudinally to melt cold crucible ...
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JPH0783927B2 |
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JPH07232254A |
PURPOSE: To extend the service life of a die and also to improve the quality of a casting. CONSTITUTION: An injection plunger 6 and a pouring pool part 12 are arranged so that the projecting plane of the pouring pool part 12 in the shift...
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JPH07232246A |
PURPOSE: To enable a drastic improvement in operability as well as heat insulation or the like of molten steel in a tundish. CONSTITUTION: The tundish heat insulating material is produced so that the main component is constituted by addi...
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JPH0775762B2 |
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JPH07214270A |
PURPOSE: To minimize the production of an excess material by eliminating the effect of excess and deficiency of molten metal generated in the previous process in continuous casting equipment. CONSTITUTION: In the multi-strand system cont...
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JPH07214287A |
PURPOSE: To obtain an excellent heat insulating effect by subjecting the surface of molten metal to rapid diffusion covering and to assure an adequate working environment and to reduce a production cost by suppressing generation of smoke...
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JPH07216507A |
PURPOSE: To obtain an alloy type high damping steel plate excellent in weldability and workability at a low cost suitable for industrial material for public welfare. CONSTITUTION: A layer A is composed of a steel having a composition con...
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