Ferrochromium-based powder core wire and preparing method and application thereof

A technology of ferrochrome and core wire, which is applied in the direction of metal material coating process, coating, fusion spraying, etc.

Inactive Publication Date: 2014-09-10
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of the oxidation behavior of the molten particles during the spraying process, and because the material composition design needs to be further optimized, the content of the amorphous phase in the arc sprayed amorphous coatings reported so far is often low

Method used

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  • Ferrochromium-based powder core wire and preparing method and application thereof
  • Ferrochromium-based powder core wire and preparing method and application thereof
  • Ferrochromium-based powder core wire and preparing method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A ferrochrome-based powder core wire material, made of a stainless steel belt covering a powder core, the powder core composition is a mixture of seven element powders, and its weight percentage range is as follows: 45 % Cr, 12 % B, 4 % Si, 2 % W, 10 % Nb, the balance being Fe.

[0039] The stainless steel belt is made of 304L stainless steel belt, and the weight ratio of the powder core to the stainless steel belt is 0.43:1.

[0040] A method for preparing a ferrochrome-based powder core wire material, comprising the steps of:

[0041] (1) Mix the seven element powders of the powder core, add alcohol, and wet mix in a ball mill for 5 hours to obtain a mixture, in which the volume ratio of alcohol to powder is 0.4:1, and the weight ratio of stainless steel balls to the mixed powder in the ball mill 5:1, ball mill speed ≤150r / min;

[0042] (2) Place the mixture in a rotary evaporator, dry until the alcohol evaporates, then put the dried mixture in an oven at a temperat...

Embodiment 2

[0049] A chromium-iron-based powder core wire material, made of a stainless steel belt covering a powder core, the powder core composition is a mixture of seven element powders, and its weight percentage range is as follows: 40 % Cr, 15 % B, 5 % Si, 1 % W, 2 % Nb, and the balance is Fe.

[0050] The stainless steel belt is made of 304L stainless steel belt, and the weight ratio of the powder core to the stainless steel belt is 0.49:1.

[0051] A method for preparing a ferrochrome-based powder core wire material, comprising the steps of:

[0052] (1) Mix the seven element powders of the powder core, add alcohol, and wet mix in a ball mill for 6 hours to obtain a mixture, in which the volume ratio of alcohol to powder is 0.46:1, and the weight ratio of stainless steel balls to the mixed powder in the ball mill 6:1, ball mill speed ≤150r / min;

[0053] (2) Place the mixture in a rotary evaporator, dry until the alcohol volatilizes, then put the dried mixture in an oven at a temp...

Embodiment 3

[0060] A ferrochrome-based powder core wire material, made of a stainless steel belt covering a powder core, the powder core composition is a mixture of seven element powders, and its weight percentage range is as follows: 50 % Cr, 5 % B, 1 % Si, 3 % W, 10 % Nb, the balance being Fe.

[0061] The stainless steel belt is made of 304L stainless steel belt, and the weight ratio of the powder core to the stainless steel belt is 0.55:1.

[0062] A method for preparing a ferrochrome-based powder core wire material, comprising the steps of:

[0063] (1) Mix the seven element powders of the powder core, add alcohol, and wet mix in a ball mill for 7 hours to obtain a mixture, in which the volume ratio of alcohol to powder is 0.52:1, and the weight ratio of stainless steel balls to the mixed powder in the ball mill 7:1, ball mill speed ≤150r / min;

[0064] (2) Place the mixture in a rotary evaporator, dry until the alcohol volatilizes, then put the dried mixture in an oven at a tempera...

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Abstract

The invention provides a ferrochromium-based powder core wire and a preparing method and application thereof. The ferrochromium-based powder core wire is made by making a stainless steel band be coated with a powder core, wherein the powder core is formed by mixing, by weight, 40%-60% of Cr, 5%-15% of B, 1%-5% of Si, 1%-5% of W, 2%-10% of Nb and the balance Fe which are all powder; the weight ratio of the powder core to the stainless steel band is (0.43-0.67) to 1; when a ferrochromium-based amorphous coating is prepared by adopting the electric arc spraying technique, oil removing and rust removing processing needs to be performed on the surface of a base body firstly, and then sand blasting and other preprocessing are performed. The ferrochromium-based powder core wire can be used for the ferrochromium-based amorphous coating which is high in amorphous content and hardness and excellent in corrosion resistant and abrasion resistant performance, and the coating is particularly suitable for site construction of large steel structures and the like and can be applied to various industrial fields like corrosion prevention and abrasion resistance.

Description

Technical field [0001] The present invention is a thermal spray field in material processing projects, which involves a chromium iron core fans and their preparation methods and applications. Background technique [0002] In the shortcoming of crystal materials such as crystal boundaries, precipitation, and component bias, the amorphous material has a very excellent corrosion resistance.Compared with the traditional crystalline material, the possibility of generating the effect of the original battery effect between the neighboring phases caused by the difference between the component and the crystal structure is greatly reduced in amorphous materials.For passivation materials, the corrosion resistance of the material is generally controlled by a layer of uniformly dense passivation film formed on the surface of the material.Due to the uniformity of structure and composition, amorphous materials show excellent corrosion resistance in various harsh corrosive environments.Z. zhou ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C23C4/06C23C4/12C22C45/00C23C4/131
Inventor 吴玉萍郭文敏洪晟高文文张建峰
Owner HOHAI UNIV
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