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Super corrosion-resistant stainless steel powder as well as application thereof and application method thereof

An application method and technology of stainless steel, applied in the direction of coating, metal material coating process, etc., can solve the problem of insufficient dense structure, and achieve the effect of reducing segregation, high wear resistance, and optimizing process parameters.

Active Publication Date: 2017-06-27
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, compared with the existing powder and repair method, it has the following advantages. At present, the cladding powder is mainly made of stainless steel substrate powder. This method only repairs the failed part without strengthening it. However, the powder studied in the present invention improves the repaired part. Excellent wear resistance and corrosion resistance, which can effectively prevent the secondary failure of the repaired part; the current repair method also uses surfacing welding to repair failed stainless steel parts, but surfacing welding is easy to cause slag inclusions, pores, and cracks, making the structure not dense enough

Method used

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  • Super corrosion-resistant stainless steel powder as well as application thereof and application method thereof
  • Super corrosion-resistant stainless steel powder as well as application thereof and application method thereof

Examples

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Effect test

Embodiment 1

[0027] Embodiment 1: a kind of super corrosion-resistant stainless steel powder and its application and application method, its stainless steel powder is made of Fe, Ni, Cr, Mn, Mo, Cu, Al 2 o 3 and Y 2 o 3 The powder composition, in which by mass parts, includes: Fe24 parts, Cr30 parts, Ni30 parts, Mn1 parts, Mo5 parts, Cu2 parts, Al 2 o 3 5 copies and Y 2 o 3 1 serving.

[0028] The Fe, Ni, Cr, Mn, Mo, Cu, Al 2 o 3 and Y 2 o 3 The powders are all more than 99.6% pure.

[0029] The Fe, Ni, Cr, Mn, Mo, Cu, Al 2 o 3 and Y 2 o 3 The particle size of the powder is 180-220 mesh, and the preparation method is to weigh each alloy powder according to the mass part in the formula, and mix it mechanically to obtain a stainless steel powder product.

[0030] The mechanical mixing refers to grinding in a mortar for 1.8 h.

[0031] The application of the above-mentioned super-corrosion-resistant stainless steel powder is to use the prepared stainless steel powder for laser...

Embodiment 2

[0033] Embodiment 2: a kind of super corrosion-resistant stainless steel powder and its application and application method, its stainless steel powder is made of Fe, Ni, Cr, Mn, Mo, Cu, Al 2 o 3 and Y 2 o 3 The powder composition, wherein by mass parts, includes: 19 parts of Fe, 25 parts of Cr, 25 parts of Ni, 0.5 parts of Mn, 1 part of Mo, 1 part of Cu, Al 2 o 3 1 part and Y 2 o 3 0.5 servings.

[0034] The Fe, Ni, Cr, Mn, Mo, Cu, Al 2 o 3 and Y 2 o 3 The powders are all more than 99.6% pure.

[0035] The Fe, Ni, Cr, Mn, Mo, Cu, Al 2 o 3 and Y 2 o 3The particle size of the powder is 150-180 mesh, and the preparation method is to weigh each alloy powder according to the mass part in the formula, and mix it mechanically to obtain a stainless steel powder product.

[0036] The mechanical mixing refers to grinding in a mortar for 1.5 h.

[0037] The application of the above-mentioned super corrosion-resistant stainless steel powder is to use the prepared stainle...

Embodiment 3

[0039] Embodiment 3: a kind of super corrosion-resistant stainless steel powder and its application and application method, its stainless steel powder is made of Fe, Ni, Cr, Mn, Mo, Cu, Al 2 o 3 and Y 2 o 3 The composition of the powder, in parts by mass, includes: 29 parts of Fe, 35 parts of Cr, 35 parts of Ni, 1.5 parts of Mn, 10 parts of Mo, 3 parts of Cu, Al 2 o 3 10 copies and Y 2 o 3 1.5 servings.

[0040] The Fe, Ni, Cr, Mn, Mo, Cu, Al 2 o 3 and Y 2 o 3 The powders are all more than 99.6% pure.

[0041] The Fe, Ni, Cr, Mn, Mo, Cu, Al 2 o 3 and Y 2 o 3 The particle size of the powder is 220-250 mesh, and the preparation method is to weigh each alloy powder according to the mass part in the formula, and mix it mechanically to obtain a stainless steel powder product.

[0042] The mechanical mixing refers to grinding in a mortar for 2 h.

[0043] The application of the above-mentioned super corrosion-resistant stainless steel powder is to use the prepared ...

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Abstract

The invention discloses super corrosion-resistant stainless steel powder as well as an application thereof and an application method thereof. The powder consists of powder of the following components in parts by mass: 19-29 parts of Fe, 25-35 parts of Cr, 25-35 parts of Ni, 0.5-1.5 parts of Mn, 1-10 parts of Mo, 1-3 parts of Cu, 1-10 parts of Al2O3 and 0.5-1.5 parts of Y2O3. Compared with the prior art, alloy powder prepared has better flowability; a coating is good in quality after the alloy powder is laser-clad; the coating is free of crack holes and is compact in structure, and average hardness is improved; and moreover, according to an electrochemical test on the coating, corrosion resistance of 904L stainless steel is greatly improved.

Description

technical field [0001] The invention relates to a super-corrosion-resistant stainless steel powder and its application and application method, belonging to the field of metallurgy. Background technique [0002] 316, 304 and 904L stainless steel are the main materials for corrosion-resistant parts used by phosphorus chemical enterprises. The working environment of corrosion-resistant parts is in the slurry containing acidic corrosive media such as phosphoric acid and sulfuric acid and small solid particles, resulting in corrosion grooves on the surface of parts due to abrasion, and even gaps and grooves at the end of sheet workpieces And gaps, etc. cause the workpiece to break or fail and must be replaced, such as slurry pumps, return pipes, etc. There are more than ten large phosphorus chemical enterprises in my country, all of which have the problem of corrosion of workpieces by acidic media. During the production process, they need to stop to replace parts, which reduces ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C22C30/02C22C32/00C23C24/10
CPCB22F1/0003C22C30/02C22C32/001C23C24/103
Inventor 徐鹏陈建华刘其斌郭亚雄
Owner GUIZHOU UNIV
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