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Device and method for improving defects of cladding layer based on eddy current induction technology

A technology of eddy current induction and cladding layer, which is applied in the direction of coating, metal material coating process, etc., to achieve the effect of strong controllability, improved performance and easy operating conditions

Active Publication Date: 2020-11-24
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the metallurgical defects existing in the existing laser cladding, such as cracks and pores, the present invention proposes a device and method for improving cladding layer defects based on eddy current induction technology

Method used

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  • Device and method for improving defects of cladding layer based on eddy current induction technology
  • Device and method for improving defects of cladding layer based on eddy current induction technology
  • Device and method for improving defects of cladding layer based on eddy current induction technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Clean the upper surface area of ​​H13 die steel.

[0057] Fix the device horizontally in the cladding equipment, and fix the H13 mold steel with dimensions of 150×150×12 mm in length, width and height respectively on the workbench 5 of the device, and make its upper surface within the range of the heating device 16 .

[0058] Set the path of the laser beam to be S-shaped on the computer-related software, the scanning speed is 10mm / s, the laser power is 300W, the spot diameter is 1mm, the overlap rate is 50%, the protective gas flow rate is 2.0L / min, and the For the cladding equipment, the laser beam 24 is vertically irradiated on the upper surface area of ​​the H13 mold steel, and the height of the nozzle 20 is adjusted so that the focal point is located on the upper surface of the H13 mold steel, and the travel path does not exceed the range of the heating device 16 .

[0059] Before cladding, the plug 18 of the device is powered on first, and then the toggle switch 17...

Embodiment 2

[0066] Clean the upper surface area of ​​45 steel.

[0067] Fix the device horizontally in the cladding equipment, and fix 45 steel with dimensions of 150×150×12 mm in length, width and height respectively on the workbench 5 of the device, and make its upper surface within the range of the heating device 16 .

[0068]Set the path of the laser beam to be S-shaped on the computer-related software, the scanning speed is 10mm / s, the laser power is 300W, the spot diameter is 1mm, the overlap rate is 50%, the protective gas flow rate is 2.0L / min, and the For the cladding equipment, the laser beam 24 is vertically irradiated on the upper surface area of ​​45 steel, and the height of nozzle 20 is adjusted to make the focal point on the upper surface of 45 steel, and ensure that the traveling path does not exceed the range of the heating device.

[0069] Before cladding, the plug 18 of the device is powered on first, and then the toggle switch 17 is pressed, and the permanent magnet 12...

Embodiment 3

[0076] Clean the upper surface area of ​​304 stainless steel.

[0077] Fix the device horizontally in the cladding equipment, and fix 304 stainless steel with dimensions of 150×150×12 mm in length, width and height respectively on the workbench 5 of the device, and make its upper surface within the range of the heating device 16 .

[0078] Set the path of the laser beam to be S-shaped on the computer-related software, the scanning speed is 10mm / s, the laser power is 300W, the spot diameter is 1mm, the overlap rate is 50%, the protective gas flow rate is 2.0L / min, and the For the cladding equipment, 24 laser beams are vertically irradiated on the upper surface area of ​​304 stainless steel, and the height of nozzle 20 is adjusted to make the focal point on the upper surface of 304 stainless steel, and ensure that the walking path does not exceed the range of heating device 16.

[0079] Before cladding, the plug 18 of the device is powered on first, and then the toggle switch 17...

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Abstract

The invention provides a device and a method for improving defects of a cladding layer based on the eddy current induction technology. The device comprises a worktable, an annular coil, a toggle switch, a rotating device, a contact switch, a temperature sensor, a thermal insulation system, a permanent magnet, a first elastic component, a second elastic component, a heat sensitive soft magnet and aheating device. A matrix is placed on the worktable; the toggle switch is pressed down; the permanent magnet rises through a rotating device and clings to the thermal sensitive soft magnet; a contactis connected; a power supply is connected; the annular coil is closed to produce a magnetic field; the changing magnetic field produces eddy current heating; when the temperature reaches a set temperature, the thermal sensitive soft magnet fails to produce the magnetic field; the permanent magnet falls back; the contact is disconnected; and the thermal insulation system is started. The device provided by the invention not only effectively reduces the generation rate of cracks and pores in the cladding layer, but also significantly improves the mechanical properties of the cladding layer. Thedevice is simple in operation and high in controllability and obviously improves the cladding effect.

Description

technical field [0001] The invention belongs to the technical field of surface modification, and in particular relates to a device and method for improving cladding layer defects based on eddy current induction technology. Background technique [0002] Laser cladding is a new surface modification technology that emerged with the development of high-power lasers in the 1970s. Different fillers are placed on the surface of the coated substrate by synchronous powder feeding method or preset powder method. Under the action of a high-energy-density laser beam, the surface coating is rapidly heated and melted by the laser nozzle, and after rapid cooling and solidification, a surface coating with a very low dilution rate and a metallurgical combination with the base material is formed. This technology is a surface strengthening method that significantly improves the properties of the substrate surface such as wear resistance, corrosion resistance, heat resistance, and oxidation res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 崔承云姜高强赵恺陈凯崔熙贵
Owner JIANGSU UNIV
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