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JP62097761 |
PURPOSE: To decrease the generation of gaseous lead and lead-contg. waste and to improve the yield of lead by hanging a prescribed amt. of lead bar in a casting mold and bottom pouring a molten steel while blowing an inert gas from a mol...
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JP62068655 |
PURPOSE: To prevent the breakout of a molten steel and to unidirectionally solidify the molten steel using a water-cooled mold stool and plural water-cooled side walls which are not fixed by the same to constitute a casting mold which is...
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JP62054549 |
PURPOSE: To prevent the crack of a base material shell and to prevent the generation of the defective inter-layer adhesion of a clad plate by disposing and fixing a flat metallic core material into a vertical casting mold and attaching a...
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JP62038739 |
PURPOSE: To improve production efficiency, yield, etc. by pulling up a tundish nossle simultaneously upon completion of casting, then removing a partition side plate and executing rapping while moving a casting mold in an opposite direct...
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JP62034650 |
PURPOSE: To obtain an ingot or billet having the fine crystal grains of the solidified structure with a simple installation by cooling molten metal flow and adjusting the pouring rate thereof in the stage of pouring the molten metal whic...
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JP62033002 |
PURPOSE: To reduce a process for producing a thin-walled metallic composite material by hot rolling a composite slab which is so cast as to hold two sheets of core materials therein and coiling the rolled sheet, then separating the same ...
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JP62033043 |
PURPOSE: To improve the quality of a product and to reduce the cost thereof by superposing two sheets of core materials consisting of metallic sheets in an upright state, installing such core materials in a casting mold, preheating the s...
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JP62024839 |
PURPOSE: To produce a billet having no segregation in the central part of a steel ingot by pouring a molten steel into a casting mold and rolling down the steel ingot while a solid-liquid coexistence phase remains therein. CONSTITUTION: ...
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JP62013242 |
PURPOSE: To obtain a metallic pipe having a groove of high dimensional accuracy over the entire outside peripheral part by using a sand mold which is integrally molded to an annular shape to cast said pipe. CONSTITUTION: The preliminaril...
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JP62009746 |
PURPOSE: To easily form a cast ingot having excellent surface quality without having component fluctuations by lining the inside surface of a metallic mold for ingot making with ceramic paper and filling a molten metal into the metallic ...
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JP62006768 |
PURPOSE: To easily remove a sintered slag layer to be formed on the head of a steel ingot by spraying a mixture composed of ≥2 kinds of compds. of alkaline (earth) metals having low m.p. on the surface of a molten steel in the stage of...
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JP62006736 |
PURPOSE: To make the quality of a steel ingot uniform and to prevent the defect thereof by removing part of the sensible heat and latent heat of solidification retrained by a molten steel and settling and depositing the molten steel in a...
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JP62003867 |
PURPOSE: To improve the surface characteristic of a vertically short steel ingot and to prevent the internal defect thereof by opening two discharge holes for discharging a molten metal to the lower part of an immersion nozzle in a horiz...
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JP61296949 |
PURPOSE: To form an ingot having fine and uniform structure and to uniformly disperse a machinability-improving element therein by discharging a molten metal contg. the machinability-improving element into a casting chamber, applying an ...
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JP61296948 |
PURPOSE: To obtain a defectless casting having no foam in the inside by spraying a molten metal in a vacuum and solidifying the pulverous semi-molten metallic powder in a casting mold. CONSTITUTION: A bar 6 for regulating the flow rate o...
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JP61295353 |
PURPOSE: To improve hydrogen-induced cracking resistance by controlling Ca, REM, S and O in a molten steel so that a configulation-controlling index is a prescribed value or below and also by controlling the diameter of a dot-like segred...
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JP61293631 |
PURPOSE: To prevent the damage of a gate refractory board and to prevent the steel leakage from the base of a gate body by forming the surface contact part of the gate body to a small area limited to the front and pressing the gate body ...
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JP61293630 |
PURPOSE: To suppress the growth of a solidified shell and to maintain the specified meniscus by using a refractories having poor wettability and high bending strength to constitute the lower part of the gate refractory board on the front...
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JP61289960 |
PURPOSE: To stably form a defectless unidirectionally solidified steel ingot by preventing the solidification from the side walls of a casting mold in the stage of forming the steel ingot by pouring a molten steel into the casting mold c...
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JP61289946 |
PURPOSE: To decrease the generation of inverse V segregation and macro segregation, etc. by providing a riser part in the upper part at a convergent taper end of a hermetic casting mold of which the base is the max. wall surface of a fla...
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JP61289945 |
PURPOSE: To cast a vertically short steel ingot which is free from central segregation, porosity and surface crack by evenly providing recesses at a specific area ratio to the base of a casting mold in the stage of casting said ingot by ...
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JP61286042 |
PURPOSE: To suppress the deformation of MnS and to obtain a sulfur free-cutting steel having excellent machineability and directivity without adding special elements thereto by forming a molten steel contg. a specific ratio of sulfur int...
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JP61286043 |
PURPOSE: To cast a steel ingot always at the specified thickness and to obtain the good-quality steel ingot which is short in a non-stationary part and has no inclusions by minimizing the initial space of a horizontally moving mold and c...
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JP61279354 |
PURPOSE: To form a unidirectionally solidified ingot which is defectless and has high quality by lining the inside of an ingot case on a molding board with heat insulating refractories, passing cooling water to the passage in the molding...
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JP61276954 |
PURPOSE: To obtain a cold die steel of high quality almost free from defects such as microvoids or inclusions by adding prescribed percentages of C, Si, Mn and Cr as essential components and further adding a regulated amount of Al. CONST...
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JP61276744 |
PURPOSE: To prevent internal segregation and inside surface cracking and to obtain a hollow steel ingot having excellent quality by using a core consisting of a thin-walled metallic cylinder and support provided therein, pouring a molten...
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JP61276745 |
PURPOSE: To improve the internal quality of a steel ingot without decreasing cooling rate by removing a casting mold after the formation of a solidified shell, cooling directly and forcible the side face of the steel ingot then insulatin...
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JP61276763 |
PURPOSE: To cast a molten steel to a steel ingot which contains less impurities, has no macro segregation in the central part and has good quality by disposing plural stages of electric heating elements via a heat resistant material to t...
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JP61266151 |
PURPOSE: To cast stably an extra thick steel slab having a good surface shape without having a segregation band and compsn. defect on the surface at a high yield by blowing a gaseous refrigerant onto the surface of a molten steel cast in...
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JP61266153 |
PURPOSE: To produce inexpensively a three-layered clad steel without having base metals with a simple installation by forming the solidified shell of the molten steel in a non-magnetic mold then forming a negative segregation layer to a ...
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JP61266152 |
PURPOSE: To cast stably an extra thick steel slab having a good surface shape without having a segregation zone and compsn. defect on the surface at a high yield by forming a quickly cooled surface solidified shell by a heat extraction c...
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JP61262447 |
PURPOSE: To produce an electrical thick steel plate having excellent magnetic characteristics without requiring blooming, rolling, etc. by casting longitudinally short the melt of a pure iron for a magnetic material in such a manner that...
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JP61259857 |
PURPOSE: To shut off the molten metal flowing down from a vessel into a pouring pipe from the outdoor air and to prevent the atmospheric air pollution by providing superposedly a porous ring and air permeable cushion ring between the top...
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JP61255757 |
PURPOSE: To cast an ingot having uniform and fine crystal structure by dropping the liquid drops of a molten metal into a casting mold preheated to an adequate temp. thereby casting the ingot. CONSTITUTION: The casting mold 14 is preheat...
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JP61255758 |
PURPOSE: To melt uniformly and efficiently electrodes and to simplify and miniaturize a drop casting device by providing coils to the electrodes which are melted by the formed arc and of which the liquid drops are made to fall into a cas...
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JP61253161 |
PURPOSE: To case steel ingots having several kinds of shapes with the same casting mold in the production of the longitudinally short steel ingots each having a specific steel ingot ratio by making variable the width, length and height o...
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JP61253145 |
PURPOSE: To prevent casting defects and to improve yield by using a core made of ceramic fibers and solidifying unidirectionally a molten steel upward from the bottom part. CONSTITUTION: Refractories 26 such as magnesia are impregnated i...
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JP61249661 |
PURPOSE: To prevent the generation of a casting defect by disposing plural pieces of consumable electrodes at suitable intervals to a non-consumable electrode, conducting electricity between both electrodes to form an arc and dropping mo...
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JP61245960 |
PURPOSE: To obtain easily and quickly a billet and ingot consisting of prescribed comps. with a titled device which melts electrodes by the arc between a pair of the electrodes by providing a means for supplying an additive for component...
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JP61245961 |
PURPOSE: To obtain easily and quickly a billet and ingot consisting of prescribed compsn. with a titled device which melts electrodes by the arc between a pair of the electrodes by constituting the electrodes of ≥2 kinds of different m...
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JP61242749 |
PURPOSE: To make possible the manufacture of an ingot having fine crystalline structure by detecting the temp. of a molten metal under dropping in a drop casting method, feeding the detected information back to a temp. control device and...
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JP61238457 |
PURPOSE: To improve yield and to reduce the cost of ingot production by pressurizing a molten steel in a runner part from a pouring pipe part to transfer part thereof into a casting mold right after the end of casting. CONSTITUTION: A pr...
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JP61235047 |
PURPOSE: To obtain a metallic casting having fine crystal grain structure and high quality by passing a molten metal on an inclined cooling plate which is directly controlled in temp. thereby casting the metal in a half-molten state. CON...
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JP61232054 |
PURPOSE: To make possible the formation of a metallic ingot having no thickened segregation zone with good workability at a high yield by removing the upper part of a molten steel at the point of the time when the molten steel poured int...
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JP61229460 |
PURPOSE: To produce an ingot having fine crystal structure and excellent mechanical characteristics by melting the top end of the ingot cast from a bottom wall nozzle of a tundish into a casting mold by high-frequency induction heating a...
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JP61226144 |
PURPOSE: To improve the quality of a product by coating an F compd. which contains a specific ratio or above of F and reacts exothermically in the stage of thermal cracking at a high temp. on the surface of a cladding metal of an insert-...
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JP61222662 |
PURPOSE: To produce a clad steel ingot of which the joint surface is satisfactorily and thoroughly killed by installing a pouring pipe having the diameter of specific times the diameter of the pouring flow of a molten steel or below into...
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JP61216801 |
PURPOSE: To obtain a steel ingot having a flat surface in the upper part and good quality by a simple device and to make possible the utilization of the removed defective part as a billet by slitting away the thickly segregated part at t...
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JP61216841 |
PURPOSE: To obtain a composite iron or steel ingot having a defectless adhesion boundary by coating a core material with a wooden material and casting a base metal contg. components different from the components of the core material into...
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JP61212446 |
PURPOSE: To prevent the generation of cracking by putting a billet or ingot into a soaking pit until the solidified shell sticking thereto cracks on shrinkage by a temp. decrease and heating the billet then rolling the same. CONSTITUTION...
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