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Large-size alloy steel ingot pouring mold and method

A pouring method and alloy steel technology, applied in the field of metallurgy, can solve problems such as low utilization rate of raw materials, and achieve the effect of improving pouring quality

Active Publication Date: 2018-12-07
ANHUI FUKAI STAINLESS STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[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

Method used

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  • Large-size alloy steel ingot pouring mold and method
  • Large-size alloy steel ingot pouring mold and method

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Embodiment 1

[0015] combine figure 1 and figure 2 , the present embodiment provides a casting mold and method for a large alloy steel ingot. The casting mold includes mold slag 5, a steel mold 1, an insulating refractory mud ring 2, a metal conductive ring 4 and an external power supply 3, and the top of the steel mold 1 is provided with an insulating The refractory mud ring 2, and the inner diameter of the steel mold 1 is the same as the inner diameter of the insulating refractory mud ring 2. 4 connection, the negative pole is connected to the bottom of steel mold 1 and grounded.

[0016] The height of the insulating refractory mud ring 2 is 20cm, and the height of the metal conductive ring 4 is 5cm, which is arranged at 3cm below the edge of the insulating refractory mud ring 2 .

[0017] Mold slag 5 is composed of: Al2O3: 40%, CaO: 35%, CaF2: 15%, coke: 10%, and its production method is to crush 100 meshes and mix in proportion. Mold slag 5 is put into the bottom of steel mold 1 as a...

Embodiment 2

[0021] combine figure 1 and figure 2 , the present embodiment provides a casting mold and method for a large alloy steel ingot. The casting mold includes mold slag 5, a steel mold 1, an insulating refractory mud ring 2, a metal conductive ring 4 and an external power supply 3, and the top of the steel mold 1 is provided with an insulating The refractory mud ring 2, and the inner diameter of the steel mold 1 is the same as the inner diameter of the insulating refractory mud ring 2, the two are coaxially distributed, the inner wall of the insulating refractory mud ring 2 is provided with a metal guide ring 4, and the positive pole of the external power supply 3 is connected to the metal conductive ring 4 connection, the negative pole is connected to the bottom of steel mold 1 and grounded.

[0022] The insulating refractory mud ring 2 has a height of 30cm, and the metal conductive ring 4 has a height of 8cm, which is placed at the place 5cm below the edge of the insulating ref...

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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 invention relates to the technical field of metallurgy, in particular to a casting mold and method for a large alloy steel ingot. Background technique [0002] Pouring is the final operation of the steelmaking production process and has a great influence on the quality of the product. The solidification conditions of the steel ingot in the ingot mold determine the crystallization structure of the steel ingot, and also determine the chemical composition and uniformity of the structure. For large steel ingots, the problem of smelting is more prominent. In order to improve the metallurgical quality of large steel ingots, researchers at home and abroad have studied and improved the shape of steel ingots, riser shapes, pouring temperature, pouring methods and pouring speeds. With the development of the national economy, the demand for large-scale machinery and equipment is strong, and the market for large-scale alloy steel ingots is increasing day by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D7/06B22D7/12
CPCB22D7/06B22D7/12
Inventor 林立洲章良刚徐涛林心炳陈伟生吴勤峰郑仁波陈素芳赵跃胜
Owner ANHUI FUKAI STAINLESS STEEL