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Special cobalt-based cermet alloy powder for laser cladding of surface of bushing

A laser cladding and ceramic alloy technology, applied in the field of alloy powder, can solve the problems of poor hardness, permanent deformation, and easy wear of the shaft sleeve

Inactive Publication Date: 2013-09-18
张家港和昊管理咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During long-term operation, due to the extrusion force and compound mechanical force on the shaft sleeve, the shaft will be worn or permanently deformed, and the cost of repairing or replacing the shaft is too high
Therefore, in addition to using expensive materials to make shaft sleeves, other shaft sleeves generally have the disadvantages of poor hardness, low strength, and easy wear.

Method used

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  • Special cobalt-based cermet alloy powder for laser cladding of surface of bushing

Examples

Experimental program
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Effect test

Embodiment 1

[0020] 110g tungsten carbide, 3g carbon, 80g calcium fluoride, 50g silicon nitride, 30g boron, 50g silicon, 50g iron, 200g molybdenum, 10g manganese, and 417g cobalt are thoroughly mixed to obtain 100-200 mesh cobalt-based cermet alloy powder.

Embodiment 2

[0022] 130g of tungsten carbide, 3g of carbon, 50g of calcium fluoride, 40g of silicon nitride, 40g of boron, 40g of silicon, 60g of iron, 180g of molybdenum, 8g of manganese, and 449g of cobalt are thoroughly mixed to obtain 100-200 mesh cobalt-based cermet alloy powder.

Embodiment 3

[0024] 120g tungsten carbide, 2g carbon, 50g calcium fluoride, 30g silicon nitride, 50g boron, 30g silicon, 80g iron, 170g molybdenum, 7g manganese, and 461g cobalt are thoroughly mixed to obtain 100-200 mesh cobalt-based cermet alloy powder.

[0025] The mixed metal alloy powder in Example 3 is uniformly ejected from the powder nozzle of the laser head. The powder feeding direction of the cermet alloy powder is coaxial with the laser beam. The laser wavelength is 1.06μm and the output power is 4000W. The running speed is 2m / min, and the single lane width is 2mm. The shaft sleeve obtained by laser cladding is mechanically inspected to obtain the following data: (The distance in the following table is based on the bottom surface of the cladding layer as the base plane, above the base plane is positive, and below the base plane is negative)

[0026]

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Abstract

The invention discloses special cobalt-based cermet alloy powder for the laser cladding of the surface of a bushing. The cobalt-based cermet alloy powder contains the following ingredients in percentage by weight: 11-13% of wolfram carbide, 0.2-0.3% of carbon, 5-8% of calcium fluoride, 3-5% of silicon nitride, 3-5% of boron, 3-5% of silicon, 5-8% of ferrum, 17-20% of molybdenum, 0.7-1% of manganese and the balance of cobalt. The cobalt-based cermet alloy powder is special for the laser cladding of the bushing and is used for improving the compactness of the metal structure of the surface of the bushing, so that the hardness, strength and wear resistance of the bushing are improved.

Description

Technical field [0001] The invention relates to an alloy powder, in particular to a cobalt-based cermet alloy powder specially used for laser cladding on the surface of a shaft sleeve. Background technique [0002] Laser has the characteristics of high brightness, high directivity, high monochromaticity, and high coherence. It is now being used in more and more fields. Laser cladding is one of the surface treatment technologies. In a nutshell, the principle of laser cladding is to use high-energy laser beams to irradiate the surface of the metal material. The surface of the substrate is quickly melted. The liquid metal forms a small-scale molten pool. At the same time, new powder materials are filled in the molten pool. , The original metal material is mixed with the added powder to form a new layer of liquid metal. After the laser beam passes, the liquid metal layer is rapidly cooled to form a solid cladding layer on the metal surface. The main function of the shaft sleeve is ...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C19/07C22C32/00C22C30/00
Inventor 柳岸敏张翀昊王小红顾斌杨健朱小虎
Owner 张家港和昊管理咨询有限公司
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