Device and method for preparing high-entropy alloy coating through electric spark deposition

A technology of electric spark deposition and high-entropy alloy, which is applied in metal material coating process, coating and other directions, can solve the problems of difficulty in taking into account efficiency and deposition quality, high porosity of thermal spraying technology, and high cost of laser cladding technology. The effect of stable EDM deposition process, improving EDM deposition efficiency, and reducing surface thermal stress

Active Publication Date: 2021-06-11
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventors found that the cost of laser cladding technology is relatively high; thermal spraying technology has the defect of high porosity; the larger the discharge energy of micro-arc discharge deposition, the higher the deposition efficiency and the worse the coating surface quality, and vice versa, the efficiency and Difficult to balance deposition quality

Method used

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  • Device and method for preparing high-entropy alloy coating through electric spark deposition
  • Device and method for preparing high-entropy alloy coating through electric spark deposition
  • Device and method for preparing high-entropy alloy coating through electric spark deposition

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Effect test

Embodiment 1

[0040] In a typical implementation of the present application, such as Figure 1-3 As shown, a device for preparing high-entropy alloy coatings by EDM, including a processing mechanism, a protective gas supply mechanism, and a power supply assembly.

[0041] The processing mechanism includes a sealing cover 1, and a two-axis linkage mechanism is fixed inside the sealing cover.

[0042] The two-axis linkage mechanism can adopt the existing two-axis linkage mechanism, including the first horizontal movement mechanism 2 , and the moving part of the first horizontal movement mechanism is connected with the second horizontal movement mechanism 3 . The second horizontal movement mechanism is vertically arranged with the first horizontal movement mechanism. The moving part of the second horizontal moving mechanism is fixed with a base 20 made of insulating material, the base is used to place workpieces, and the two-axis linkage mechanism can output two mutually perpendicular movemen...

Embodiment 2

[0061] This embodiment discloses a working method of the device for preparing a high-entropy alloy coating by electrospark deposition described in Embodiment 1, comprising the following steps:

[0062] Step 1: In the sealed cover, use the protective gas supply mechanism to fill the protective gas, immerse the workpiece to be processed in the protective gas and place it on the insulating base, install the tool electrode and the piezoelectric actuator on the machine tool spindle, and connect the workpiece with the Connect the negative pole of the power supply assembly, connect the tool electrode to the positive pole of the power supply assembly, open the gas cylinder, pressure regulating valve, and rotary vane vacuum pump to complete the preparation for processing.

[0063] Step 2: Start the power system and power supply components of the machine tool spindle. The power supply components apply pulses between the tool electrodes and the workpiece, and use the charging and discharg...

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Abstract

The invention relates to a device and method for preparing a high-entropy alloy coating through electric spark deposition. The device comprises a machining mechanism and a shielding gas supply mechanism, wherein the machining mechanism comprises a sealing cover, a two-axis linkage mechanism capable of containing a workpiece is arranged in the sealing cover, a vertical lifting mechanism is arranged at one side of the two-axis linkage mechanism, the vertical lifting mechanism is connected with a power system, the power system is connected with a main shaft, and the main shaft is connected with a tool electrode through a piezoelectric actuator; and the shielding gas supply mechanism is connected with the sealing cover through a pipeline, a pressure regulating part and a power supply assembly are installed on the pipeline, the positive electrode of the power supply assembly is used for being connected with the tool electrode, and the negative electrode of the power supply assembly is used for being connected with the workpiece. The coating prepared through the device is good in quality.

Description

technical field [0001] The invention relates to the technical field of mechanical processing equipment, in particular to a device and method for preparing a high-entropy alloy coating by electrospark deposition. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The principle of EDM technology is to use the spark discharge between the tool electrode and the workpiece in the pulse circuit to melt the tool electrode material and deposit it on the workpiece. Additive manufacturing technology. The tool electrode is connected to the positive pole of the pulse power supply, and the workpiece is connected to the negative pole of the pulse power supply. The tool electrode and the workpiece are gradually approaching. When the electric field strength between the tool electrode and the workpiece reaches the breakdown strength, spark discharge is generated, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C26/02
CPCC23C26/02
Inventor 王侃许祥宇何欣璐刘勇
Owner SHANDONG UNIV
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