Copper-nickel-chrome-molybdenum-based alloy powder and fusion covering method thereof

A molybdenum-based alloy, chrome-molybdenum alloy technology, applied in metal material coating process, coating and other directions, can solve the problems of corrosion, copper-based alloy impeller anti-corrosion needs to be improved, cavitation and other problems, to achieve good bonding and improve comprehensive performance And the effect of excellent service life and wear resistance

Active Publication Date: 2014-08-06
河北瑞驰伟业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual use process, it is found that the copper-based alloy impeller is still affected by seawater, and there are local spots of seawater corrosion or cavitation
[0008] It can be seen that the anti-corrosion and anti-cavitation performance of the copper-based alloy impeller still needs to be improved, especially the improvement of the surface treatment technology of the ship impeller should be a breakthrough point

Method used

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  • Copper-nickel-chrome-molybdenum-based alloy powder and fusion covering method thereof
  • Copper-nickel-chrome-molybdenum-based alloy powder and fusion covering method thereof
  • Copper-nickel-chrome-molybdenum-based alloy powder and fusion covering method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] In terms of mass percentage, the composition of the copper-nickel-chromium-molybdenum alloy powder is: Ni: 20%, Cr: 20%, Mo: 13%, W: 2%, and the balance is Cu. In terms of mass percentage, the composition of the matrix is: Mn: 11.5%, Al: 7.0%, Fe: 2.5%, Ni: 1.8%, zinc Zn: 0.3%, and the balance is Cu.

Embodiment 2

[0052] In terms of mass percentage, the composition of the copper-nickel-chromium-molybdenum alloy powder is: Ni: 23%, Cr: 23%, Mo: 15%, W: 3%, and the balance is Cu. In terms of mass percentage, the composition of the matrix is: Mn: 13.0%, Al: 8.0%, Fe: 3.0%, Ni: 2.0%, zinc Zn: 0.3%, and the balance is Cu.

Embodiment 3

[0054] In terms of mass percentage, the composition of the copper-nickel-chromium-molybdenum alloy powder is: Ni: 25%, Cr: 25%, Mo: 20%, W: 5%, and the balance is Cu. In terms of mass percentage, the composition of the matrix is: Mn: 14.0%, Al: 8.5%, Fe: 4.0%, Ni: 2.5%, zinc Zn: 0.3%, and the balance is Cu.

[0055] Select the substrates with the components described in the above three embodiments, and use the above-mentioned laser cladding method to clad the cladding layer of the corresponding material with a thickness of 500 μm on each substrate, and finally form a sample.

[0056] Next, test the corrosion resistance of the three test samples prepared above, and select three samples of manganese-aluminum bronze (0ZQAI12-8-3-2) with a weight of 15Kg and a thickness of 10mm to test the corrosion resistance. , and then compare and evaluate the corrosion resistance of the present invention.

[0057] Corrosion resistance test The experimental process and results are as follows: ...

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Abstract

The invention discloses copper-nickel-chrome-molybdenum-based alloy powder and a laser fusion covering method thereof and relates to substrate fusion covering materials and a laser fusion covering technology thereof. According to the copper-nickel-chrome-molybdenum-based alloy powder and the laser fusion covering method thereof, substrate corrosion resistance and cavitation resistance can be improved. The copper-nickel-chrome-molybdenum-based alloy powder comprises, by weight, the components of 5%-8% of NbC powder and 92%-95% of copper-nickel-chrome-molybdenum alloy powder, wherein the copper-nickel-chrome-molybdenum alloy powder comprises 20%-25% of Ni, 20%-25% of Cr, 13%-20% of Mo, 2%-5% of W, and the balance Cu. The laser fusion covering method comprises two steps of copper-nickel-chrome-molybdenum-based alloy powder preparing and cladding layer preparing.

Description

technical field [0001] The invention relates to a matrix anti-corrosion maintenance technology, in particular to a matrix cladding material and a laser cladding process thereof. Background technique [0002] The impeller of ship waterjet propulsion will suffer complex and severe corrosion such as pitting corrosion, stress corrosion and multi-phase flow corrosion of seawater, sandstone and cavitation during use. stainless steel or ferritic-austenitic duplex stainless steel. However, due to the low hardness (200-250HV) of austenitic stainless steel, its wear resistance and corrosion resistance in complex environments are poor. Therefore, the use of reasonable surface engineering technology to strengthen the stainless steel impeller of marine water jet propulsion has become the key to improving the service life of the impeller. [0003] At present, the surface treatment techniques for stainless steel impellers of marine water jet propulsion usually include laser cladding, pla...

Claims

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Application Information

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IPC IPC(8): B22F1/00C23C24/10C22C30/02
Inventor 李建平王菊花耿路
Owner 河北瑞驰伟业科技有限公司
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