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Flux core welding wire for cement bin material liner plate

A cement silo and liner technology, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problem of affecting the wear resistance and impact resistance of the coating, the pores of the coating, and the coating is easy to fall off, etc. problems, to achieve the effect of increasing arc stability and nitrogen fixation, reducing porosity and cracks, and reducing welding spatter

Inactive Publication Date: 2017-09-22
安徽飞弧焊业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of surfacing, spatter is easy to occur, which makes the coating produce pores, affects the wear resistance and impact resistance of the coating, and the coating is easy to fall off

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A flux-cored welding wire for a cement silo liner, comprising a low-carbon steel strip sheath and a flux core, wherein the raw materials of the flux core include: graphite 6.3%, fluoride 5%, titanium dioxide 5.5%, diboride Titanium 6.5%, silicon dioxide 2.5%, calcium carbonate 2.5%, manganese powder 7%, molybdenum powder 2.5%, vanadium powder 1.5%, chromium powder 20%, aluminum powder 3%, magnesium powder 4%, boron carbide 0.5%, Rare earth oxide 6.5%, the balance is iron powder.

[0017] After surfacing welding of the Q235 steel plate in Example 1, the surface hardness is 64HRC, and the wear resistance is good.

Embodiment 2

[0019] A flux-cored welding wire for a cement silo liner, comprising a low-carbon steel strip sheath and a flux core, wherein the raw materials of the flux core include: 6% graphite, 5.5% fluoride, 5% rutile nano-titanium dioxide, Titanium diboride 7%, silicon dioxide 2%, calcium carbonate 3%, manganese powder 6%, molybdenum powder 3%, vanadium powder 1%, chromium powder 22%, aluminum powder 2%, magnesium powder 5%, boron carbide 0.4%, rare earth oxide 7%, the balance is iron powder;

[0020] Wherein, the fluoride is barium fluoride, lithium fluoride and sodium fluorozirconate, wherein the weight ratio of barium fluoride, lithium fluoride and sodium fluorozirconate is 7:2:0.5;

[0021] The rare earth oxides are lanthanum oxide, cerium oxide and rubidium oxide, wherein the weight ratio of lanthanum oxide, cerium oxide and rubidium oxide is 2.5:1:0.4.

[0022] After the Q235 steel plate is surfacing welded with Example 2, the surface hardness is 65HRC, and the wear resistance i...

Embodiment 3

[0024] A flux-cored welding wire for a cement silo liner, comprising a low-carbon steel strip sheath and a flux core, wherein the raw materials of the flux core include: 6.5% graphite, 4.5% fluoride, 6% rutile nano-titanium dioxide, Titanium diboride 6%, silicon dioxide 3%, calcium carbonate 2%, manganese powder 8%, molybdenum powder 2%, vanadium powder 2%, chromium powder 18%, aluminum powder 4%, magnesium powder 3%, boron carbide 0.6%, rare earth oxide 6%, the balance is iron powder;

[0025] Wherein, the fluoride is barium fluoride, lithium fluoride and sodium fluorozirconate, wherein the weight ratio of barium fluoride, lithium fluoride and sodium fluorozirconate is 8:1:1;

[0026] The rare earth oxides are lanthanum oxide, cerium oxide and rubidium oxide, wherein the weight ratio of lanthanum oxide, cerium oxide and rubidium oxide is 2:1.5:0.2.

[0027] After the Q235 steel plate is surfacing welded with Example 3, its surface hardness is 66HRC, and its wear resistance i...

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Abstract

The invention discloses a flux core welding wire for a cement bin material liner plate. The flux core welding wire comprises a low-carbon steel strip skin and a flux core. The flux core comprises the raw materials of, by weight, 6%-6.5% of graphite, 4.5%-5.5% of fluoride, 5%-6% of titanium dioxide, 6%-7% of titanium diboride, 2%-3% of silica, 2%-3% of calcium carbonate, 6%-8% of manganese powder, 2%-3% of molybdenum powder, 1%-2% of vanadium powder, 18%-22% of chrome powder, 2%-4% of aluminum powder, 3%-5% of magnesium powder, 0.4%-0.6 % of boron carbide, 6%-7% of rare earth oxide, and the balance iron powder. A welding coating is good in abrasion resistance, high in impact resistance and not liable to fall off.

Description

technical field [0001] The invention relates to the field of welding wire technology, in particular to a flux-cored welding wire for cement silo lining boards. Background technique [0002] The silo liner is often used in the cement manufacturing process, and it is often damaged by the wear and impact of the silo during use; the surfacing coating can be formed by surfacing welding on the surface of the silo liner to increase its performance and service life. However, during the surfacing process, spatter is likely to occur, causing pores in the coating, affecting the wear resistance and impact resistance of the coating, and the coating is easy to fall off. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a flux-cored welding wire for cement silo lining plates. The welding coating of the present invention has good wear resistance, high impact resistance, and the coating is not easy to f...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/3086B23K35/40
Inventor 卢齐元
Owner 安徽飞弧焊业股份有限公司