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

An alloy powder, laser cladding technology, applied in metal material coating process, improvement of process efficiency, coating and other directions, can solve the problem that protection parameters cannot be adjusted arbitrarily, it is difficult to solve excessive design, and it is difficult to meet protection requirements, etc. The effect of enhancing the resistance to sediment erosion, avoiding the segregation of elements, and improving the resistance to intergranular corrosion

Active Publication Date: 2022-03-18
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, preparation method of alloy powder material and application of alloy powder material in seawater corrosion resistant laser cladding material
  • Alloy powder material, preparation method of alloy powder material and application of alloy powder material in seawater corrosion resistant laser cladding material
  • Alloy powder material, preparation method of alloy powder material and application of alloy powder material 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%; The purity of each of the above elements is ≥99.9%.

[0037] During preparation, the specific steps are:

[0038] (1) Melting of alloy powder

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

[0040] (2) Atomized powder making

[0041]The alloy powder material is prepared by the atomization powder making technology protected by nitrogen, and the alloy melt prepared in step (1) is poured into the graphite crucible of the metal powder vacuum atomization powder making equipment (Zhuzhou Hanhe Industrial Equipment Co., Ltd.) , using the device for atomization and pulverization to obtain a...

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 ≤0.15wt.%.

[0046] During preparation, the specific steps are:

[0047] (1) Melting of alloy powder

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

[0049] (2) Atomized powder making

[0050] The alloy powder material is prepared by using the atomization powder making technology protected by nitrogen gas, and the alloy melt prepared in step (1) is poured into the crucible of the atomization rapid condensation device, and the device is used for atomization...

Embodiment 3

[0054] Raw material ratio of alloy powder material Ni: 38wt.%; Al: 3.8wt.%; W: 6wt.%; Fe: 0.5wt.%; Mn: 1.5%; Sb: 1%; 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 ≤0.15wt.%.

[0055] During preparation, the specific steps are:

[0056] (1) Melting of alloy powder

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

[0058] (2) Atomized powder making

[0059] The alloy powder material is prepared by using the atomization powder making technology protected by nitrogen gas, and the alloy melt prepared in step (1) is poured into the crucible of the atomization rapid condensation device, and the device is used for atomiza...

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Abstract

The invention provides an alloy powder material, a preparation method of the alloy powder material and application of the alloy powder material in a seawater corrosion resistant laser cladding material. The material comprises the following raw materials in percentage by mass: 38-45% of Ni, 3-6% of Al, 4-8% of W, 0.5-1.5% of Fe, 0.5-1.5% of Mn, 0.5-1% of Sb and the balance of Cu. The total amount of other impurity elements in the material is smaller than or equal to 0.15%. During preparation, raw material powder is weighed according to the proportion, Cu is heated and melted, then Ni is added, other raw materials are added after Cu and Ni are completely melted, molten alloy melt is obtained, the molten alloy melt is poured into a crucible of an atomization rapid condensation device, atomization powder making and screening are conducted through the device, and the alloy powder material is obtained. The alloy powder material is applied as a seawater-corrosion-resistant laser cladding material and can be metallurgically bonded with a to-be-protected workpiece, so that the corrosion-resistant life is greatly prolonged.

Description

technical field [0001] The invention relates to the fields of corrosion and wear protection technology, surface engineering technology, and metal material technology, specifically alloy powder materials and their preparation methods and their application in seawater corrosion-resistant laser cladding materials. The alloy powder is used for laser cladding, which can Improve the seawater corrosion resistance life of the steel pipe pile foundation. Background technique [0002] The corrosion environment of offshore wind power sites is complex. Humidity, salinity, sunshine intensity, alternating dry and wet service environments, sediment erosion, and bio-fouling 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 also located in the sea mud area, seawater immersion area and spray splash area, and its corrosion and protection issues need to be conside...

Claims

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Application Information

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Patent Type & Authority Applications(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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