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Casting mold and method for large alloy steel ingot
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A pouring method and alloy steel technology, applied in the field of metallurgy, can solve the problems of low utilization rate of raw materials and achieve the effect of improving pouring quality
Active Publication Date: 2021-03-19
ANHUI FUKAI STAINLESS STEEL
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[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a casting mold and method for large alloy steel ingots to solve the problem of low utilization of raw materials in the preparation process of large alloy steel ingots in the prior art
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Embodiment 1
[0015]Combinefigure 1 withfigure 2In this embodiment, the present embodiment provides a pouring mold and method of a large alloy steel ingot, and the casting mold includes a protective slag 5, a steel mold 1, an insulating refractory coil 2, a metal conductive ring 4, and an external power source 3, and the top of the steel mold 1 is provided with insulation. The refractory mud ring 2, and the inner diameter of the steel mold 1 is the same as the inner diameter of the insulative refractory ring 2, the two coaxial distributions, the insulative refractory rings 2, a metal conductive ring 4, the positive electrode and metal conductive rings of the external power source 3 4 Connect, the negative electrode is connected to the bottom of the steel mold 1 and ground.
[0016]The insulating refractory rings 2 height is 20 cm, and the metal conductive ring 4 height is 5 cm, and it is disposed at 3 cm below the insulating refractory ring 2.
[0021]Combinefigure 1 withfigure 2In this embodiment, the present embodiment provides a pouring mold and method of a large alloy steel ingot, and the casting mold includes a protective slag 5, a steel mold 1, an insulating refractory coil 2, a metal conductive ring 4, and an external power source 3, and the top of the steel mold 1 is provided with insulation. The refractory rings 2, and the inner diameter of the steel mold 1 is the same as the inner diameter of the insulating film ring 2, the two coaxial distributions, the insulative refractory rings 2, the insulating refractory rings 2, a metal guide ring 4, the positive electrode and metal conductive rings of the external power source 3 4 Connect, the negative electrode is connected to the bottom of the steel mold 1 and ground.
[0022]The insulating refractory coil 2 height is 30 cm, and the metal conductive ring 4 height is 8 cm, which is disposed at 5 cm below the insulating refractory ring 2.
[0023]The protective residue 5 ingredi...
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Abstract
The invention discloses a large-size alloy steel ingot pouring mold and method. By adding a to-be-poured material and insulated refractory mortar rings at the tops of existing steel molds, the inner walls of the insulated refractory mortar rings are provided with metal conducting rings, the bottoms of the steel molds are provided with covering slag layers, and thus, the protection effect on moltensteel is achieved; the two-quickness one-slowness bottom pouring method pouring technology is adopted, and slag is protected from floating upwards so that molten steel splashing can be prevented; when the covering slag enters the insulated refractory mortar rings, a power source forms a circuit, the molten steel at a riser is subjected to appropriate heat compensation and heat preservation undercovering slag resistance action, scabbing, cold-lap, hole shrinkage and cracking prone to occurring to the surface layer of a steel ingot are eliminated, the defects of loosening, segregation and thelike of the interior of the steel ingot are overcome, the quality of the steel ingot is improved, and follow-up machining of the steel ingot is facilitated.
Description
Technical field[0001]The present invention relates to the field of metallurgical technology, in particular, is a pouring mold and method of a large alloy steel ingot.Background technique[0002]Pouring is the final operation of the steelmaking production process, which has a great impact on the quality of the product. The coagulation conditions of the steel ingot in the steel ingot mold determine the crystallization structure of the steel ingot, and also determines the chemical composition and tissue uniformity. For large steel ingots, smelting problems are more prominent. In order to improve the metallurgical quality of large steel ingots, researchers at home and abroad have been studied and improved in the shape, rush shape, casting temperature, casting mode and casting speed, etc. With the development of the national economy, the demand of large-scale mechanical equipment is strong. The market of large alloy steel ingots is increasing, and alloy steel smelting has developed to larg...
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