Alkaline sliding plate for continuous casting of special steel and preparation process thereof

A special steel and continuous casting technology, applied in the direction of manufacturing tools, casting equipment, metal processing equipment, etc., can solve the problems of poor Ca corrosion resistance and difficulty in adapting, and achieve the goal of enhancing corrosion resistance, reducing carbon content, and improving strength Effect

Active Publication Date: 2020-06-02
YIXING REFRACTORY MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon-bonded aluminum-carbon and aluminum-zirconium-carbon slides have poor Ca corrosion resistance and are difficult to adapt to the continuous casting of special steels such as calcium-treated steel, high-oxygen steel, high-quality steel, boiling steel, killed steel, and semi-killed steel.

Method used

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  • Alkaline sliding plate for continuous casting of special steel and preparation process thereof
  • Alkaline sliding plate for continuous casting of special steel and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Raw material specifications and formula (weight percentage) are as follows:

[0031] (1) Magnesium-aluminum spinel with a particle size of 3-1mm, 25%;

[0032] (2) Magnesium-aluminum spinel with a particle size of 1-0mm, 33%;

[0033] (3) Magnesium-aluminum spinel with particle size ≤0.045mm, 18%;

[0034] (4) Aluminum-rich spinel (A90) with a particle size of 0.002~0.005mm, 11%;

[0035] (5) Flake graphite, 1%;

[0036] (6) Carbon black, 2%;

[0037] (7) Metal magnesium powder with particle size ≤0.045mm, 6%;

[0038] (8) Magnesium-aluminum alloy powder with particle size ≤0.045mm, 3%;

[0039] (9) Boron carbide with particle size ≤0.045mm, 1%;

[0040] (10) Additional composite resin, +6%;

[0041] (11) Carbon dioxide gas.

[0042] Raw material (10) composite resin is added separately, not included in the total mass percentage of raw materials. The composite resin is made by mixing silicone resin and phenolic resin in a ratio of 3:1. Raw material (11) carbon...

Embodiment 2

[0056] Raw material specifications and formula (weight percentage) are as follows:

[0057] (1) Magnesium-aluminum spinel with a particle size of 3-1mm, 38%;

[0058] (2) Magnesium-aluminum spinel with a particle size of 1-0mm, 28%;

[0059] (3) Magnesium-aluminum spinel with particle size ≤0.045mm, 15%;

[0060] (4) Aluminum-rich spinel (A90) with a particle size of 0.002~0.005mm, 9%;

[0061] (5) Flake graphite, 1.5%;

[0062] (6) Carbon black, 1.5%;

[0063] (7) Metal magnesium powder with particle size ≤0.045mm, 4%;

[0064] (8) Metal magnesium aluminum alloy powder with particle size ≤0.045mm, 2%;

[0065] (9) Boron carbide with particle size ≤0.045mm, 1%;

[0066] (10) Additional composite resin, +5%;

[0067] (11) Carbon dioxide gas.

[0068] Raw material (10) composite resin is added separately, not included in the total mass percentage of raw materials. The composite resin is made by mixing silicone resin and phenolic resin in a ratio of 2:1. Raw material (1...

Embodiment 3

[0081] Raw material specifications and formula (weight percentage) are as follows:

[0082] (1) Magnesium-aluminum spinel with a particle size of 3-1mm, 50%;

[0083] (2) Magnesium-aluminum spinel with a particle size of 1-0mm, 22%;

[0084] (3) Magnesium-aluminum spinel with particle size ≤0.045mm, 13%;

[0085] (4) Aluminum-rich spinel (A90) with a particle size of 0.002~0.005mm, 7%;

[0086] (5) Flake graphite, 2%;

[0087] (6) Carbon black, 1%;

[0088] (7) Metal magnesium powder with particle size ≤0.045mm, 3%;

[0089] (8) Metal magnesium aluminum alloy powder with particle size ≤0.045mm, 1%;

[0090] (9) Boron carbide with particle size ≤0.045mm, 1%;

[0091] (10) Additional composite resin, +4%;

[0092] (11) Carbon dioxide gas.

[0093] Raw material (10) composite resin is added separately, not included in the total mass percentage of raw materials. The composite resin is made by mixing silicone resin and phenolic resin in a ratio of 2:1. Raw material (11) c...

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Abstract

The invention relates to an alkaline sliding plate for continuous casting of special steel and a preparation process thereof. The advantages of various carbon sources are compounded, magnesium metal powder is added into the sliding plate taking magnesium aluminate spinel as a main raw material, CO2 is adopted as a sintering atmosphere, and the CO2 reacts with the Mg powder at a high temperature togenerate MgO and graphene; the generated MgO has high reaction activity and reacts with Al2O3 in situ to form spinel to promote sintering; and the graphene and spinel generated in situ fill fine holes, so that the material is more compact, and the erosion resistance and oxidation resistance of the sliding plate are enhanced.

Description

technical field [0001] The invention relates to an alkaline sliding plate for special steel continuous casting and a preparation process thereof, belonging to the field of high-temperature ceramics and refractory materials in the discipline of inorganic non-metallic materials. Background technique [0002] There are about 2,000 grades and about 50,000 varieties and specifications of special steel in the world. As my country's industrialization deepens and equipment manufacturing advances into high-tech fields, the market for high-quality, high-performance, and personalized special steel products that cannot be replaced by ordinary steel, which are required by emerging industries such as wind power, nuclear power, high-speed rail, large aircraft, petrochemicals, and automobiles, will grow rapidly . In the smelting of special steel, in order to eliminate the blockage of the nozzle caused by aluminum deoxidation products, it is necessary to treat the molten steel with calcium, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/443C04B35/66C04B35/81C04B35/622C04B35/64B22D41/32
CPCC04B35/443C04B35/66C04B35/622C04B35/64B22D41/32C04B2235/5427C04B2235/5436C04B2235/425C04B2235/401C04B2235/402C04B2235/3821C04B2235/5276C04B2235/3826C04B2235/46C04B2235/658C04B2235/656C04B2235/6567C04B2235/9684C04B2235/9607C04B2235/9676
Inventor 陈松林蒋正跃王俊涛胡小成刘士范闫昕
Owner YIXING REFRACTORY MATERIAL
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