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A kind of chute liner of ironmaking blast furnace distributor and its preparation method

A technology for ironmaking blast furnaces and distributors, which is applied in the field of chute liners and can solve problems such as short life

Active Publication Date: 2017-07-07
SHITSZJACHZHUAN SANKHUAN VEHLV KORPOREHJSHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In order to solve the defect that the chute liner in the prior art cannot realize the advantages of high hardness, high wear resistance, impact resistance, high toughness, cold resistance and thermal fatigue performance, and short service life, the present invention provides a Disclosed is a chute liner for an ironmaking blast furnace distributor and a preparation method thereof. The liner is to pour two metal solutions into the same object to form two metal objects with different chemical compositions.

Method used

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  • A kind of chute liner of ironmaking blast furnace distributor and its preparation method

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Embodiment 1

[0037] An ironmaking blast furnace distributor chute liner, the chemical composition of the chute liner includes: by weight percentage, C 3.5%, Mn 0.65%, Si 0.45%, P 0.035%, S 0.035%, W 3.55% , Mo 1.85%, V0.85%, Cr 19.5%, B 0.65%, and the balance is Fe.

Embodiment 2

[0039] An ironmaking blast furnace distributor chute liner, the chemical composition of the chute liner includes: by weight percentage, C 3.6%, Mn 0.75%, Si 0.67%, P 0.045%, S 0.04%, W 4.2% , Mo 2%, V 1%, Cr19.8%, B 0.7%, and the balance is Fe.

Embodiment 3

[0041] An ironmaking blast furnace distributor chute liner, the chemical composition of the chute liner includes: by weight percentage, C 3.2%, Mn 0.7%, Si 0.5%, P 0.04%, S 0.03%, W 3.5% , Mo 1.9%, V 0.9%, Cr 20%, B 0.7%, and the balance is Fe.

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Abstract

The invention discloses a distributor chute lining plate of an iron smelting blast furnace, and belongs to the technical field of chute lining plates. The chute lining plate comprises the following chemical components in percentage by weight: 3.2-4.0% of C, 0.6-0.9% of Mn, 0.4-0.8% of Si, 0.03-0.05% of P, 0.03-0.05% of S, 3.5-4.5% of W, 1.8-2.2% of Mo, 0.8-1.2% of V, 19.5-20.5% of Cr, 0.6-0.9% of B, and the balance of Fe. The invention further discloses a preparation process of the chute lining plate; and through the preparation process and the improvement of all the chemical components of the chute lining plate, the prepared chute lining plate has high hardness, high wear resistance, impact resistance, high toughness and cold-heat fatigue resistance, and can satisfy various different working conditions to reach long life.

Description

technical field [0001] The invention belongs to the technical field of chute liners, and relates to a bimetal structure chute liner, in particular to a chute liner for an ironmaking blast furnace distributor and a preparation method thereof. The liner has both high hardness and high wear resistance , impact resistance, high toughness, cold and thermal fatigue resistance, can meet various working conditions and achieve long life. Background technique [0002] The top charging equipment of the ironmaking blast furnace is installed at the highest end of the blast furnace, and the distributor is installed at the bottom of the whole set of charging equipment. The distribution chute and the distributor are integral structures, which can be disassembled or installed at any time, so it is usually called the chute distributor. The upper part of the chute is about five meters away from the feeding level of the ironmaking raw materials, and the lower part is about five meters away fro...

Claims

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Application Information

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IPC IPC(8): C22C37/10C22C37/06C21D5/00C21D1/26C21D1/20C21D9/00B22D19/16C21B7/20
CPCB22D19/16C21B7/20C21D1/20C21D1/26C21D5/00C21D9/0081C22C37/06C22C37/10
Inventor 魏明义苟忠荣贾占良杜呈朝王长青
Owner SHITSZJACHZHUAN SANKHUAN VEHLV KORPOREHJSHEN
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