Micro-arc oxidation reaction device

Abstract

The invention discloses a micro-arc oxidation reaction device. The device comprises a cooler unit, a power supply connection wire, a power supply, a numerical control table, a cooling water tank and a stainless steel electrolysis bath fixed in the cooling water tank and used for containing electrolyte and is characterized by further comprising a safety protection device, wherein the safety protection device comprises a barrel bath and a protection arc shield which are processed by PVC transparent plates; a PVC transparent plate cover is integrally formed at the top end of the barrel bath; drill holes are formed in the barrel bath and are connected with axial bolts at the periphery of the cooling water tank; a transverse girder is arranged at the upper part of the cooling water tank; a lead wire is arranged on the transverse girder; one end of the lead wire is connected with an anode of the power supply; the other end of the lead wire is connected with a metal substrate immersed in the electrolyte; semicircle centers at two ends of the protection arc shield are connected with axial bolts at two ends of the transverse girder; the protection arc shield can rotate forwards and backwards around the axial bolts. According to the micro-arc oxidation reaction device, the safety protection device is simple in structure and convenient to mount, dismount and maintain.

Description

technical field [0001] The invention relates to a micro-arc oxidation reaction device, which can protect experimenters during the reaction process and belongs to the field of metal material surface treatment. Background technique [0002] Micro arc oxidation (MAO), also known as micro plasma oxidation (MPO), plasma electrolytic oxidation (PEO). This technology is a new type of metal material surface treatment method, which is widely used in aerospace, medical, machinery and other fields. Micro-arc oxidation is developed from ordinary anodic oxidation technology. Non-ferrous metals such as aluminum, magnesium, titanium and their alloys are placed in a special electrolyte, and the surface relies on arc discharge to generate instantaneous high temperature and high pressure, and grows into a ceramic coating on the surface of the substrate. , so as to improve the wear resistance, corrosion resistance and heat resistance of the material surface. It can be specifically applied to...

AI Technical Summary

Problems solved by technology

However, there will be some safety problems in the reaction process: 1. Since the reaction process is carried out under high pressure, the water in the stainless steel electrolytic cell, connecting wires, wires connected to the anode, and the cooling box cannot be touched. Personnel conduct safety education and safety warnings are pasted around the experimental machine, but there will still be safety hazards in long-term experiments; 2. In general laboratory micro-arc oxidation tests, the wire connection is often wrapped with insulating tape to insulate 3. In the process of micro-arc oxidation reaction, sometimes the size of the sample is large and the reaction is relatively violent, and the stirring vibration of the stirring equipment may cause the substrate and the electrolytic cell wall short circuit

In order to avoid contact between the substrate and the stainless steel electrolytic cell during the reaction, it is often necessary to have requirements for the placement and size of the test piece, and the experimenter must always pay attention, which undoubtedly adds a lot of trouble. When the reaction is more violent, it will produce noise and affect people around

Although the micro-arc oxidation power supply and the laboratory power supply control gate are equipped with protective switches, after all, this is a protective function after a danger occurs. In the event of an electric shock or short circuit, it will still cause damage to personnel and instruments. There is no such switch yet. Do a good job of protection from the source on the micro-arc oxidation equipment

Images