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Device for reducing oxygen content of rare earth wires added into steel

A technology of wire oxygen content and rare earth is applied in the field of devices for reducing the oxygen content of rare earth wire added to steel, and can solve the problem of high oxygen content of rare earth wire

Pending Publication Date: 2022-07-22
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects of the existing technology, the technical problem solved by the present invention is to provide a device for reducing the oxygen content of rare earth wires added to steel, which can solve the problem that the oxygen content of rare earth wires used in continuous casting steel is too high at present. Purification, to avoid harmful inclusions after feeding low-purity rare earth wires in the steel, and to play the beneficial role of rare earths in improving the strength, toughness, and corrosion resistance of steel

Method used

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  • Device for reducing oxygen content of rare earth wires added into steel
  • Device for reducing oxygen content of rare earth wires added into steel
  • Device for reducing oxygen content of rare earth wires added into steel

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Steel grade: weathering steel 09CuPTiRE, diameter of rare earth wire is 2.5mm, oxide layer thickness of rare earth wire is 70μm, radius of isolation cover is 25mm, continuous casting and drawing speed is 1.5m / min, slab section size: 230*1400mm, continuous casting 3 Tanks, each tank of molten steel weighs 180 tons.

[0027] 1. Install the rare earth wire coil on the reel 17, and take a sample to detect the total oxygen content of the rare earth wire: 0.0073%;

[0028] 2. Pull out the rare earth wire 10 through the guide cylinder liner 4 of the wire stripper 18, the wire feeder 19, and the guide steel pipe 12 respectively;

[0029] 3. Place the isolation cover 20 in the mold 21, and immerse it in the mold slag 15 and the molten steel 16 to a depth of 25 mm, such as image 3 shown;

[0030] 4. Rotate the pressure adjustment bolt 8 to adjust the pressure applied by the torsion spring 7 to the scraper 5, jog the thread feeder 19 to move the rare earth wire a little, use a ...

Embodiment 2

[0034] Steel grade: ship plate steel E36, the diameter of the rare earth wire is 3.0mm, the thickness of the oxide layer of the rare earth wire is 75μm, the radius of the isolation cover is 30mm, the continuous casting and drawing speed is 1.0m / min, the section size of the casting blank: 300*1550mm, continuous casting 4 tanks, each tank weighs 100 tons.

[0035] 1. Install the rare earth wire coil on the reel 17, and take a sample to detect the total oxygen content of the rare earth wire: 0.0061%;

[0036] 2. Pull the rare earth wire through the guide cylinder liner 4 of the wire stripper 18, the wire feeder 19, and the guide steel pipe 12 respectively;

[0037] 3. Place the isolation cover 20 in the crystallizer 21, and immerse it in the mold slag 15 and the molten steel 16 to a depth of 30 mm, such as image 3 shown;

[0038] 4. Rotate the pressure adjustment bolt 8 to adjust the pressure applied by the torsion spring 7 to the scraper 5, jog the thread feeder 19 to move th...

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Abstract

The invention relates to a device for reducing the oxygen content of rare earth wires added into steel, which comprises a rolling wheel, a wire stripping machine, a wire feeding machine, an isolation hood and a guide steel pipe, and is characterized in that the isolation hood is arranged in a crystallizer, penetrates through casting powder and is embedded into molten steel by a certain depth; the winding wheel, the wire stripping machine and the wire feeding machine are sequentially arranged side by side with the isolation hood; the guide steel pipe is of a 90-degree L-shaped structure, one side of the guide steel pipe perpendicularly penetrates through the isolation hood and is fixedly connected with the isolation hood, and the other side of the guide steel pipe is horizontal and is aligned with the direction of a rare earth wire penetrating through the wire feeder. The device has the beneficial effects that the device is simple in structure and easy and convenient to operate, the problem that the oxygen content of rare earth wires used for continuous steel casting at present is too high can be solved, harmful inclusions are prevented from being generated after low-purity rare earth wires are fed into steel by purifying the rare earth wires, and the beneficial effects of rare earth on improving the strength, toughness, corrosion resistance and the like of the steel are achieved.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to a device for reducing the oxygen content of rare earth wire added to steel. Background technique [0002] The addition of rare earth materials to steel can play a role in promoting the denaturation and microalloying of inclusions, and can improve the strength, toughness, corrosion resistance and other properties of steel. At present, the continuous casting process is widely used to produce steel billets, and the method of adding rare earth mainly adopts the mold feeding method. The rare earth-containing steel has high requirements on the total oxygen content of rare earth wires, and the total oxygen content is required to be less than 30ppm. The chemical properties of rare earth are very active and easy to be oxidized. Its reactivity with oxygen is higher than that of aluminum. It begins to form an oxide layer after a few minutes of exposure to air, and the thi...

Claims

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Application Information

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IPC IPC(8): B22D11/108C21C7/00
CPCB22D11/108C21C7/0006
Inventor 黄玉平廖相巍赵成林张维维
Owner ANGANG STEEL CO LTD