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A surfacing material for the bottom surface of continuous casting rolls

A technology for surfacing materials and continuous casting rolls, applied in welding/cutting media/materials, welding media, welding equipment, etc. Good welding process performance, small friction coefficient of surfacing layer, good impact resistance

Active Publication Date: 2018-06-29
JIANGSU XINGYUAN POWER PLANT & METALLURGICAL EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main problem in the current surfacing and remanufacturing roll technology is that the original roll and the surfacing material are prone to micro-cracks and layered tearing defects during use. Therefore, in addition to adjusting the process parameters, it is urgent to develop a good combination performance and Primer material with excellent physical and chemical properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A surfacing material for the bottom surface of a continuous casting roll, which contains the following components in terms of weight percentage: C 0.1%; P 0.025%; S 0.03%; Si 0.5%; Mn 1.5%; Cr 20%; Ba 1%; Ni 1.2% ;W 2%;V 1%;Nb 10%;Pt 0.3%;Zr0.2%;TiO 2 0.5%; CaF 2 1.2%; the balance is Fe.

[0024] The surfacing material on the bottom surface of the continuous casting roll is prepared through the following steps:

[0025] (1) Weigh each raw material powder according to the proportion in the formula, and put it into the mixer and mix it evenly;

[0026] (2) Put the uniformly mixed raw material powder into the melting furnace, raise the temperature of the melting furnace to 850°C for 30 minutes, and let the alloy liquid stand for 10 minutes after melting;

[0027] (3) After smelting, cast in an electromagnetic continuous casting machine under the protection of argon to prepare alloy ingots;

[0028] (4) First lower the temperature of the ingot to 350°C, put it directl...

Embodiment 2

[0032] A surfacing material for the bottom surface of a continuous casting roll, which contains the following components in terms of weight percentage: C 0.03%; P 0.023%; S 0.025%; Si 0.3%; Mn 1%; Cr 16%; Ba 3%; Ni 1.8%; W 3%; V 2%; Nb 7%; Pt 0.1%; Zr 0.05%; TiO 2 0.1%; CaF 2 0.6%; the balance is Fe.

[0033] The surfacing material on the bottom surface of the continuous casting roll is prepared through the following steps:

[0034] (1) Weigh each raw material powder according to the proportion in the formula, and put it into the mixer and mix it evenly;

[0035] (2) Put the uniformly mixed raw material powder into the melting furnace, raise the temperature of the melting furnace to 850-950°C for 20 minutes, and let the alloy liquid stand for 15 minutes after melting;

[0036] (3) After smelting, cast in an electromagnetic continuous casting machine under the protection of argon to prepare alloy ingots;

[0037] (4) First lower the temperature of the ingot to 400°C, and ...

Embodiment 3

[0041] A surfacing material for the bottom surface of continuous casting rolls, which contains the following components in terms of weight percentage: C 0.04%; P 0.021%; S ≤ 0.026%; Si 0.4%; Mn 1.2%; Cr 17%; Ba 2%; Ni 1.6% ;W 2%;V 1.5%;Nb 9%;Pt 0.3%;Zr0.1%;TiO 2 0.3%; CaF 2 1%; the balance is Fe.

[0042] The surfacing material on the bottom surface of the continuous casting roll is prepared through the following steps:

[0043] (1) Weigh each raw material powder according to the proportion in the formula, and put it into the mixer and mix it evenly;

[0044] (2) Put the uniformly mixed raw material powder into the melting furnace, raise the temperature of the melting furnace to 900°C for 25 minutes, and let the alloy liquid stand for 10 minutes after melting;

[0045] (3) After smelting, cast in an electromagnetic continuous casting machine under the protection of argon to prepare alloy ingots;

[0046] (4) First lower the temperature of the ingot to 380°C, put it direct...

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Abstract

The invention provides a surfacing welding material for the bottom surface of a continuous casting roller. The surfacing welding material for the bottom surface of the continuous casting roller has the following components, in percentage by weight, 0.03-0.1% of C, not higher than 0.025% of P, not higher than 0.03% of S, 0.3-0.5% of Si, 1-1.5% of Mn, 16-20% of Cr, 1-3% of Ba, 0.5-1.2% of Mn, 1.2-1.8% of Ni, 2-3% of W, 1-2% of V, 7-10% of Nb, 0.1-0.3% of Pt, 0.05-0.2% of Zr, 0.1-0.5% of TiO2 and 0.6-1.2% of CaF2, with the balance being Fe. The surfacing welding material for the bottom surface of the continuous casting roller is good in surfacing welding technological property, small in surfacing welding layer friction coefficient, good in impact resistance and intermetallic wear resistance, capable of realizing multi-layer surfacing welding without crack and easy to machine. The material can be used for the repair of carbon steel parts or the transition layers of other surfacing welding materials.

Description

technical field [0001] The invention relates to the field of welding materials, in particular to a surfacing welding material for the bottom surface of a continuous casting roll. Background technique [0002] Overlay welding is a welding process that deposits a layer of wear-resistant, corrosion-resistant, heat-resistant metal layers on the surface or edge of the workpiece. Surfacing welding can improve the service life of parts, use materials reasonably, improve product performance and reduce costs, and has significant economic benefits. In industrial production, welding technology such as surfacing welding is developing rapidly. Surfacing welding materials are divided into three categories: manual welding rods, welding wires, and strip welding strips. [0003] The continuous casting roll is a key component of the continuous casting machine. It is in continuous contact with the high-temperature slab that has not yet solidified inside, and at the same time it is subjected t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/3053B23K35/40
Inventor 赵飞文张柯柯王爱琴徐东倪静
Owner JIANGSU XINGYUAN POWER PLANT & METALLURGICAL EQUIP MFG
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