Alloy powder material, its preparation method and application in seawater corrosion resistant laser cladding material

A technology of alloy powder and alloy, which is applied in the field of metal materials, can solve the problems that the protection parameters cannot be adjusted at will, it is difficult to meet the protection requirements, and it is difficult to solve the over-design, so as to enhance the anti-sediment erosion ability, avoid element segregation, improve Effect of Intergranular Corrosion Resistance

Active Publication Date: 2022-07-12
CHINA THREE GORGES CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the sacrificial anode method, although the system is simple, does not require an external power supply, is easy to manage and does not require daily maintenance after operation, its limitations are also obvious: the protection parameters cannot be adjusted at will; the protection period is short; it is difficult to solve the problem of over-design, resulting in waste
For the applied (forced) current method, although the service life of the anode is long and the protection parameters can be adjusted at any time according to the operation of the system, it is prone to over-protection phenomenon, resulting in hydrogen embrittlement cracking; the anti-corrosion effect is limited by the actual working conditions, and it is difficult to achieve uniform protection Requirements, etc., require a stable and reliable regulation and control system
[0005] In summary, the existing corrosion protection methods for steel pipe pile foundations for offshore wind turbines are difficult to meet the requirements of long protection period, good protection effect, simple construction, easy maintenance, strong applicability, not easy to wear, and easy to be popularized in large areas

Method used

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  • Alloy powder material, its preparation method and application in seawater corrosion resistant laser cladding material
  • Alloy powder material, its preparation method and application in seawater corrosion resistant laser cladding material
  • Alloy powder material, its preparation method and application in seawater corrosion resistant laser cladding material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Raw material ratio of alloy powder material: Ni: 43wt.%; Al: 4.3wt.%; W: 6wt.%; Fe: 1wt.%; Mn: 1%; Sb 0.5%; Cu: balance. The purity of each of the above elements is ≥99.9%.

[0037] When preparing, the specific steps are:

[0038] (1) Melting of alloy powder

[0039] Weigh the powder materials according to the proportion, and add metal Cu into the vacuum intermediate frequency induction furnace for heating. After Cu is completely melted, Ni is added. After Cu and Ni are completely melted, Al, W, Fe, Mn, Sb and other metal raw materials are added. The molten alloy was held at a temperature of 1100°C for 50 minutes.

[0040] (2) Atomization pulverizing

[0041]The alloy powder material is prepared by the atomization pulverizing technology under nitrogen protection, and the alloy melt obtained in step (1) is poured into the graphite crucible of the metal powder vacuum air atomization pulverizing equipment (Zhuzhou Hanhe Industrial Equipment Co., Ltd.). , and the device...

Embodiment 2

[0045] Raw material ratio of alloy powder material: Ni: 45wt.%; Al: 6wt.%; W: 8wt.%; Fe: 1wt.%; Mn: 1%; Sb 0.5%; Cu: balance. The purity of each of the above elements is ≥99.9%. The total mass fraction of other impurity elements in the material is less than or equal to 0.15wt.%.

[0046] When preparing, the specific steps are:

[0047] (1) Melting of alloy powder

[0048] Weigh the powder materials according to the proportion, and add metal Cu into the vacuum intermediate frequency induction furnace for heating. After Cu is completely melted, Ni is added. After Cu and Ni are completely melted, Al, W, Fe, Mn and other metal raw materials are added. The molten alloy was held at a temperature of 1200°C for 60 minutes.

[0049] (2) Atomization pulverizing

[0050] The alloy powder material is prepared by the nitrogen-protected atomization powder technology. The alloy melt obtained in step (1) is poured into the crucible of the atomization rapid condensation device, and the dev...

Embodiment 3

[0054] The raw material ratio of the alloy powder material is Ni: 38wt.%; Al: 3.8wt.%; W: 6wt.%; Fe: 0.5wt.%; Mn: 1.5%; Sb: 1%; The purity of each of the above elements is ≥99.9%. The total mass fraction of other impurity elements in the material is less than or equal to 0.15wt.%.

[0055] When preparing, the specific steps are:

[0056] (1) Melting of alloy powder

[0057] Weigh the powder materials according to the proportion, and add metal Cu into the vacuum intermediate frequency induction furnace for heating. After Cu is completely melted, Ni is added. After Cu and Ni are completely melted, Al, W, Fe, Mn and other metal raw materials are added. The molten alloy was held at a temperature of 1100°C for 55 minutes.

[0058] (2) Atomization pulverizing

[0059] The alloy powder material is prepared by the nitrogen-protected atomization powder technology. The alloy melt obtained in step (1) is poured into the crucible of the atomization rapid condensation device, and the d...

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Abstract

The invention provides an alloy powder material, a preparation method thereof, and an application in a seawater corrosion-resistant laser cladding material. The material comprises the following raw materials in terms of mass percentage: Ni 38-45%, Al 3-6%, W 4-8%, Fe 0.5-1.5%, Mn 0.5-1.5%, Sb 0.5-1%, and the balance is Cu; the total amount of other impurity elements in the material is ≤0.15%. When preparing, firstly weigh the raw material powder in proportion, heat and melt Cu, then add Ni, and after Cu and Ni are completely melted, add other raw materials to obtain a molten alloy melt, pour the molten alloy melt into the atomization and rapidly condense In the crucible of the device, the device is used to atomize powder and sieve to obtain the alloy powder material. The alloy powder material is used as a seawater corrosion-resistant laser cladding material, which can realize metallurgical combination with the workpiece to be protected, greatly improving Corrosion resistance life.

Description

technical field [0001] The invention relates to the technical fields of corrosion and wear protection technology, surface engineering technology and metal material technology, in particular to an alloy powder material and a preparation method thereof and application in a laser cladding material resistant to seawater corrosion. Improve seawater corrosion resistance life of steel pipe pile foundation. Background technique [0002] The corrosive environment of offshore wind farms is complex, humidity, salinity, sunshine intensity, alternating dry and wet service environment, sediment erosion, biofouling and other problems will bring great challenges to the corrosion protection of offshore wind power equipment. As a large-scale steel structure of an offshore wind farm, the steel pipe pile foundation is located in the sea mud area, the seawater full immersion area and the spray splash area at the same time, and its corrosion and protection issues need to be more seriously conside...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/02B22F1/00B22F9/08C23C24/10
CPCC22C30/02C22C9/06C22C19/03C22C19/002B22F9/082C23C24/106B22F1/00Y02P10/25
Inventor 高远邹祖冰
Owner CHINA THREE GORGES CORPORATION
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