A method and device for preparing distribution-controllable wc-reinforced metal-based composite coatings assisted by an electromagnetic composite field

A technology of auxiliary device and magnetic field generating device, which is applied in metal material coating process, coating, electromagnet and other directions, can solve the problem of less research on distribution regulation, and achieve the effect of simple structure, convenient use and avoiding sinking to the bottom.

Active Publication Date: 2022-03-22
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

From the above reports, the research on the distribution regulation of WC mainly focuses on laser cladding and melting injection, but there are few researches on the distribution regulation of WC in WC particle reinforced composite coatings prepared by plasma cladding.

Method used

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  • A method and device for preparing distribution-controllable wc-reinforced metal-based composite coatings assisted by an electromagnetic composite field
  • A method and device for preparing distribution-controllable wc-reinforced metal-based composite coatings assisted by an electromagnetic composite field
  • A method and device for preparing distribution-controllable wc-reinforced metal-based composite coatings assisted by an electromagnetic composite field

Examples

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Embodiment 1

[0043] Using the above-mentioned electromagnetic field auxiliary device, this embodiment prepares a WC-enhanced metal-based composite coating with controllable distribution according to the following steps:

[0044] Step 1. The size of the substrate to be clad is 120mm×60mm×15mm, and the material is 20# steel. Firstly, the surface of the base material is polished, cleaned, and dried, and then placed on the table top of the liftable workbench of the electromagnetic field auxiliary device, and fixed with a chuck.

[0045] Step 2. Turn on the excitation power supply of the magnetic field generating device, and feed in a 3A direct current to generate a transverse steady-state magnetic field with a magnetic field strength of about 120mT, which is perpendicular to the longitudinal section of the workpiece.

[0046] Step 3. Add Ni60 powder with a particle size of 100-300 mesh and spherical nickel-coated WC powder with a particle size of 100-200 mesh into the corresponding powder feed...

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Abstract

The invention discloses a method and device for preparing a distribution-controllable WC reinforced metal-based composite coating assisted by an electromagnetic composite field. The metal-based self-fluxing alloy powder is used as the coating base material, and the WC particle powder is used as the coating reinforcement. Phase, through electromagnetic composite field assisted plasma cladding to form WC reinforced metal matrix composite coating on the surface of the workpiece to be treated. In the process of plasma cladding, the invention applies a magnetic field and an electric field to the workpiece at the same time, so that the charged particles and the charged fluid in the molten pool are subjected to an upward Lorentz force under the joint action of the magnetic field and the electric field, and the WC particles are prevented from sinking to the bottom , so that the WC particles are evenly distributed in the composite coating.

Description

technical field [0001] The invention belongs to the technical field of surface engineering, and in particular relates to a method and a device for preparing a WC reinforced metal-based composite coating with controllable distribution by electromagnetic composite field-assisted plasma cladding. Background technique [0002] The failure of metals, including wear, corrosion fatigue and fracture, often starts from the metal surface. The metal-based (iron-based, nickel-based or cobalt-based) composite coating reinforced by WC particles can significantly increase the hardness of the workpiece surface and improve the wear resistance and corrosion resistance of the workpiece. It has both the high hardness of WC and the high toughness of metal, and the WC particles and alloy have good mutual wettability and high bonding strength. The WC-enhanced nickel-based composite coating also has red hardness, and its hardness decreases little under high temperature conditions, and it still has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10B22F1/18H01F7/20
CPCC23C24/103H01F7/20B22F1/17
Inventor 黄海鸿赵伦武何岩磊仉会健李思念
Owner HEFEI UNIV OF TECH
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