Automatic Micro-arc Oxidation Treatment Method for Large Size Workpiece Surface
A technology of workpiece surface, micro-arc oxidation, applied in the direction of anodizing, surface reaction electrolytic coating, coating, etc., to achieve the effect of increasing the scope of application, saving resources and costs, and increasing the cooling rate
Active Publication Date: 2019-12-10
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
[0005] First of all, the object of the present invention is to provide an automatic micro-arc oxidation treatment equipment for the surface of large-sized workpieces to solve the existing problems in the surface micro-arc oxidation treatment of large-sized workpieces
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[0049] The specific implementation manner of the present invention will be further described below by describing the embodiments in conjunction with the accompanying drawings.
[0050] figure 1 It is a structural schematic diagram of the automatic micro-arc oxidation treatment equipment for large-sized workpiece surface provided by this embodiment, which includes a pulse power supply 1, an electrolyte circulation system, a movable cathode shower head 4 and an automatic treatment control system. Wherein, the output anode of the pulsed power supply 1 is electrically connected to the workpiece 11 to be processed through the anode wire 2 , and the output cathode of the pulsed power supply 1 is electrically connected to the movable cathode nozzle 4 through the cathode wire 3 .
[0051] The pulse power supply 1 includes a main body of a power box and a panel controller, and the panel controller is equipped with an electric parameter adjustment button and an electric parameter displa...
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Abstract
An automatic micro-arc oxidation treatment equipment and method for the surface of a large-sized workpiece, the micro-arc oxidation equipment includes a pulse power supply, an electrolyte circulation system, a movable cathode nozzle and an automatic treatment control system. The electrolyte circulation system includes a circulation pump, a flow regulating valve, an electrolyte tank and an electrolyte delivery pipe. An insulating column carrying workpieces to be processed is arranged in the electrolyte tank. The movable cathode sprinkler head includes a stainless steel liquid spray sheet at the front end, a spray area adjusting device for adjusting the spray area of the stainless steel liquid spray sheet, and a nozzle main body cover. The nozzle main body cover and the stainless steel liquid spray sheet constitute the inner cavity of the nozzle. The automatic processing control system includes an automatic control device for walking paths and a real-time control device for film thickness. Under the automatic processing control system, the micro-arc oxidation treatment equipment sprays the electrolyte to the surface of the workpiece to be repaired for micro-arc oxidation treatment through the movable cathode nozzle, which can realize partial repair of the workpiece or partial-to-whole micro-arc oxidation treatment.
Description
technical field [0001] The invention relates to an automatic micro-arc oxidation treatment device and method for the surface of a large-sized workpiece, belonging to the technical field of surface treatment. Background technique [0002] Micro-arc oxidation technology is a new technology for in-situ growth of oxide ceramic layers on the surface of aluminum, magnesium, titanium and their alloys. Its essence is that when aluminum, magnesium, titanium and other valve metals are put into the electrolyte, after electrification, anodic oxidation occurs on the surface of the base metal to form an oxide insulating film. As the voltage increases, the voltage acting on the surface of the metal oxide film increases accordingly. When the voltage increases to a critical value, the weak part of the formed oxide film is broken down, and a micro-arc discharge phenomenon occurs. The electrolyte contacts the substrate through the discharge channel to undergo an oxidation reaction, and finally...
Claims
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IPC IPC(8): C25D11/02C25D11/06
CPCC25D11/005C25D11/024C25D11/026C25D11/06
Inventor 周强朱宗涛陈辉
Owner SOUTHWEST JIAOTONG UNIV