Copper base alloy powder preset coating for underwater laser cladding and preparation method of copper base alloy powder preset coating

A copper-based alloy, underwater laser technology, applied in the field of material science and engineering, can solve the problems of inclusions, poor metallurgical bonding of alloy coatings and substrates, etc., and achieves low cost, no cracks, inclusions, pores, and good forming quality.

Active Publication Date: 2017-07-14
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the alloy coating prepared by the laser cladding method in the existing water environment is not well bonded to the substrate m

Method used

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  • Copper base alloy powder preset coating for underwater laser cladding and preparation method of copper base alloy powder preset coating
  • Copper base alloy powder preset coating for underwater laser cladding and preparation method of copper base alloy powder preset coating
  • Copper base alloy powder preset coating for underwater laser cladding and preparation method of copper base alloy powder preset coating

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specific Embodiment approach 1

[0019] Specific Embodiment 1: The copper-based alloy powder pre-coating used for underwater laser cladding in this embodiment is composed of an alloy powder layer and a cladding protective coating, wherein the alloy powder layer is composed of copper-based alloy powder and α-cyano It is mixed with ethyl acrylate binder, and the cladding protective coating is composed of 40% to 45% CaF by mass percentage. 2 , 4%~5% CuO, 15%~18% CaCO 3 , 10% ~ 11% TiO 2 , 4% to 5% of Cu, 1% to 2% of Si, 2% to 3% of Al, 1% to 2% of Mn, 2% to 5% of ethyl cyanoacrylate and the rest Composition of activated carbon.

specific Embodiment approach 2

[0020] Embodiment 2: This embodiment differs from Embodiment 1 in that the thickness of the alloy powder layer is 1-2 mm.

specific Embodiment approach 3

[0021] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the thickness of the cladding protection coating is 0.2-0.5 mm.

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Abstract

The invention provides a copper base alloy powder preset coating for underwater laser cladding and a preparation method of the copper base alloy powder preset coating, and aims to solve the problems that cracks, air holes and other defects are prone to being generated to an alloy coating prepared through an existing water environment laser cladding method and a matrix. The preset coating is composed of an alloy powder layer and a cladding protection coating. The alloy powder layer is formed by mixing copper base alloy powder and a binder. The cladding protection coating is prepared from, by mass percent, 40%-45% of CaF2, 4%-5% of CuO, 15%-18% of CaCO3, 10%-11% of TiO2, 4%-5% of Cu, 1%-2% of Si, 2%-3% of Al, 1%-2% of Mn, 2%-5% of alpha-ethyl cyanoacrylate and the balance activated carbon. A cladding layer obtained by carrying out underwater laser cladding through the preset coating is good in quality and has no defects such as cracks, inclusions and air holes, and good metallurgical bonding is formed by the cladding layer and the matrix.

Description

technical field [0001] The invention belongs to the technical field of material science and engineering, and in particular relates to a copper-based alloy powder pre-coating for underwater laser cladding and a preparation method thereof. Background technique [0002] In recent years, copper and copper alloys have been widely used in the field of marine engineering. For example, brass and aluminum bronze for ship propellers, bronze for seawater pumps, and copper and copper alloys for submarine oil pipelines have all played a role in their respective fields. played a vital role. As far as today's metal material market is concerned, the rising price of copper has greatly increased the cost of copper alloy parts, which has greatly increased the maintenance cost of engineering facilities that originally required replacement parts. The copper alloy parts of marine engineering mostly fail in the form of fracture and wear and corrosion, especially the corrosion and wear of copper a...

Claims

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Application Information

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IPC IPC(8): C23C24/10B22F1/00
CPCB22F1/0003C23C24/103
Inventor 金国冯相如崔秀芳郑卫刘健铭蔡召兵温鑫
Owner HARBIN ENG UNIV
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