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Method for rapidly preparing gradient metal ceramic composite material by laser induction hybrid cladding

A laser induction, cermet technology, applied in the direction of metal material coating process, coating, etc., to achieve the effect of reducing the temperature gradient, no cracks in the structure, and eliminating the interface stress

Inactive Publication Date: 2010-05-19
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are no reports in the literature on the preparation of bulk cermet composites with high ceramic phase content and no cracks by laser induction composite cladding technology.

Method used

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  • Method for rapidly preparing gradient metal ceramic composite material by laser induction hybrid cladding
  • Method for rapidly preparing gradient metal ceramic composite material by laser induction hybrid cladding
  • Method for rapidly preparing gradient metal ceramic composite material by laser induction hybrid cladding

Examples

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Effect test

example 1

[0045] Preparation of NiCrAlY-ZrO 2 Gradient metal-ceramic composite parts, the part has the structure of an aeroengine blade, the root of the blade is made of NiCrAlY alloy, and ZrO is used from bottom to top 2 The mass percentage varies from 0% to 100%, and the tip of the blade is pure ZrO 2 Material.

[0046] The implementation process of this embodiment is:

[0047] (1) First, NiCrAlY-ZrO is paired by computer 1 2 Model design and layered "slicing" processing of aviation blade material parts: generate a 3D CAD model of the part in computer 1, and cut the model into a series of thin slices with a certain thickness and parallel to each other according to the requirements of processing accuracy and gradient structure design , that is, "slice" processing, so as to convert the three-dimensional data information of the part into a series of two-dimensional plane data information, form a series of scanning tracks of the laser induction composite cladding heat source parallel t...

example 2

[0054] Prepare Sellite6-WC hollow shaft gradient cermet composite parts, the inner surface of the part is Sellite6 alloy, the mass percentage of WC particles changes from 0% to 100% along the radial direction from the inside to the outside, and the outer layer is pure WC Material.

[0055] (1) First, carry out model design and layered "slicing" processing on the Sellite6-WC hollow shaft gradient metal-ceramic composite part through computer 1: generate a 3D CAD model of the part in computer 1, and perform the processing according to the machining accuracy and gradient structure The design requires that the model be cut into a series of thin slices with a certain thickness and parallel to each other, that is, "slicing" processing, so as to convert the three-dimensional data information of the part into a series of two-dimensional plane data information, forming a series of laser sensors parallel to the X-Y plane. The scanning trajectory of the composite cladding heat source is ...

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Abstract

The invention relates to a method for rapidly preparing a gradient metal ceramic composite material by laser induction hybrid cladding, which is characterized by comprising the following steps of: (1) generating a 3-D CAD solid model of a gradient metal ceramic composite material component by utilizing special CAD software or a reverse technology in a computer; (2) generating a processing program; (3) controlling the distance between the surface of a base material surface and an induction coil within the range of 2-10 mm; (4) locating a focused CO2 laser beam in an induction heating area; and (5) lifting a laser induction hybrid cladding processing head to the distance equal to the thickness of a CAD 2-D sheet. The invention has the advantages that: (1) a bulk metal ceramic composite material part the ceramic phase of which is continuously tunable along the material thickness direction within 0-100percent by weight is obtained; (2) the use ratio of laser energy and laser cladding efficiency are greatly improved; (3) the metal ceramic composite material with compact tissue but without cracks is obtained; (4) special tools and fixtures are not needed in the manufacturing process, and the flexibility is high; and (5) the mechanical property, the abrasive resistance and the corrosion resistance of the gradient metal ceramic composite material are greatly improved.

Description

technical field [0001] The invention relates to a method for preparing a gradient metal-ceramic composite material, in particular to a method for rapidly preparing a gradient metal-ceramic composite material by laser induction composite cladding. Background technique [0002] Metal-ceramic composites are formed by embedding ceramic phases with high melting point and high hardness in a metal matrix with certain plasticity and toughness, which can greatly improve the wear and tear of many key parts such as mining and cutting tools and machined parts. Service life in corrosive environments. [0003] At present, the methods for preparing metal-ceramic composite materials mainly include surfacing welding, plasma spraying and laser cladding. However, limited by the preparation process, the above method can only prepare shaped metal-ceramic composite coatings or small block metal-ceramic composite materials on the surface of metal materials, and there are still some defects. For ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
Inventor 周圣丰杜楠曾晓雁
Owner NANCHANG HANGKONG UNIVERSITY
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