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A kind of iron base alloy powder for cold spraying and its preparation method and application

An iron-based alloy, cold spray technology, applied in metal processing equipment, pressure inorganic powder coating, transportation and packaging, etc., can solve the problems of limited application scope, cumbersome and lengthy methods, etc., to enhance the deformation hardening ability and improve the deposition performance. , good softening effect

Active Publication Date: 2020-04-24
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The invention patent with authorized notification number CN104325148 B discloses a preparation method of low-resistance spherical metal powder for cold spraying and spherical metal powder. In this patent, the prepared spherical powder is repeatedly impacted at high speed on the substrate with corresponding specification surface protrusions. On the other hand, pits are formed on the surface of the metal powder, the occurrence of flow separation is suppressed by improving the surface morphology of the powder, and the flying speed of the powder is increased during the spraying process to achieve the effect of increasing the density of the coating. The range is limited, and the effect of spraying is not fundamentally improved by changing the hardness of the cold spray powder

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  • A kind of iron base alloy powder for cold spraying and its preparation method and application
  • A kind of iron base alloy powder for cold spraying and its preparation method and application
  • A kind of iron base alloy powder for cold spraying and its preparation method and application

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Effect test

Embodiment 1

[0036] The iron-based alloy powder for cold spraying of the present embodiment is composed of the following mass percentages: Mn 15%, Ni 5%, V 3%, C 1.5%, B 2%, Si 1%, La 2 o 3 1%, the balance is Fe.

[0037] The preparation method of the iron-based alloy powder for cold spraying of the present embodiment comprises the following steps:

[0038]Step 1. Mix 1.5kg electrolytic manganese powder, 0.5kg pure nickel block, 0.3kg pure vanadium block, 0.15kg graphite rod, 0.2kg pure boron powder, 0.1kg pure silicon powder, 0.1kg lanthanum oxide powder and 7.15kg pure iron block Put it into a vacuum induction furnace, melt it under the condition of 1550°C, then carry out slag removal, refining, homogenization and atomization treatment in sequence, and then dry and sieve to obtain the crude iron-based alloy powder; the atomization treatment The method is the plasma rotating electrode method, and the electrode rotation speed of the plasma rotating electrode method is 20000 rpm; the cru...

Embodiment 2

[0047] The iron-based alloy powder for cold spraying of this embodiment is composed of the following components in mass percentage: Mn 13%, Ni 3%, V 2%, C 1.3%, B 1%, Si 0.5%, CeO 2 0.5%, the balance is Fe.

[0048] The preparation method of the iron-based alloy powder for cold spraying of the present embodiment comprises the following steps:

[0049] Step 1. Mix 1.3kg electrolytic manganese powder, 0.3kg pure nickel block, 0.2kg pure vanadium block, 0.13kg graphite rod, 0.1kg pure boron powder, 0.05kg pure silicon powder, 0.05kg cerium oxide powder and 7.87kg pure iron block Put it into a vacuum induction furnace, melt it under the condition of 1400°C, then carry out slag removal, refining, homogenization and atomization treatment in sequence, and then dry and sieve to obtain the crude iron-based alloy powder; the atomization treatment The method is a vacuum air atomization method, the atomization gas of the vacuum air atomization method is nitrogen, and the atomization pre...

Embodiment 3

[0055] The iron-based alloy powder for cold spraying of this embodiment is composed of the following components in mass percentage: Mn 14%, Ni 4%, V 2.5%, C 1.4%, B 1.5%, Si 0.7%, Nd 2 o 3 0.7%, the balance is Fe.

[0056] The preparation method of the iron-based alloy powder for cold spraying of the present embodiment comprises the following steps:

[0057] Step 1. Mix 1.4kg electrolytic manganese powder, 0.4kg pure nickel block, 0.25kg pure vanadium block, 0.14kg graphite rod, 0.15kg pure boron powder, 0.07kg pure silicon powder, 0.07kg neodymium oxide powder and 7.52kg pure iron block Put it into a vacuum induction furnace, melt it under the condition of 1500 ° C, then carry out slag removal, refining, homogenization and atomization treatment in sequence, and then dry and sieve to obtain the crude iron-based alloy powder; the atomization treatment The method is a vacuum air atomization method, the atomization gas of the vacuum air atomization method is nitrogen, and the ...

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Abstract

The invention discloses an iron-based alloy powder for cold spraying, which is composed of the following components in mass percentage: Mn 13%-15%, Ni or Co 3%-5%, V 2%-3%, C 1.3%-1.5% %, B 1%~2%, Si 0.5%~1%, rare earth oxide 0.5%~1%, the balance is Fe, and the mass ratio of Mn and C is 10:1. The invention discloses a preparation method of iron-based alloy powder. The raw materials are smelted and then slag removal, refining, homogenization, atomization, drying and sieving are performed in sequence, and iron-based alloy powder is obtained by solid solution and reduction. The invention also discloses the application of the iron-based alloy powder. The invention controls the mass ratio of Mn and C in the iron-based alloy powder to make it have deformation hardening performance. The method of the present invention improves the deposition performance of the iron-based alloy powder through solution treatment. The iron-based alloy powder coating of the invention has high hardness, slow wear and long service life.

Description

technical field [0001] The invention belongs to the field of alloy material technology and surface modification technology, and in particular relates to an iron-based alloy powder for cold spraying and its preparation method and application. Background technique [0002] Cold spraying technology is a kind of preheated compressed gas (nitrogen, helium, air or mixed gas) as the acceleration medium, which drives metal particles to hit the substrate at a very high speed in the solid state, and deposits and forms by the way that the particles undergo strong plastic deformation. Low-temperature spraying technology for coatings. The biggest difference between cold spraying and thermal spraying is that the particle is heated differently, resulting in a different state before it hits the tool surface. The three major heat source temperatures of traditional thermal spraying technology are: combustion flame (temperature above 2000°C), electric arc (temperature above 5000°C), plasma (t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/00C22C38/02C22C38/04C22C38/08C22C38/10C22C38/12B22F1/00B22F9/08C23C24/04
CPCC22C38/002C22C38/02C22C38/04C22C38/08C22C38/10C22C38/12C23C24/04B22F9/082B22F1/142B22F1/145
Inventor 杨理京李争显王少鹏黄春良
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH