Micro-arc oxidation treatment device for titanium alloy parts without marks

Abstract

The invention provides a titanium alloy component print-free micro-arc oxidation treatment device. The device comprises an electrolytic cell, a lifter and a cathode assembly. The cathode assembly comprises cathodes, a guard plate assembly and flexible sealing rubber plates. The cathodes are mounted in the guard plate assembly and located on the two sides of a titanium alloy component descending path. Upper guard plates, rear guard plates and lower guard plates close the upper surfaces, the lower surfaces and the side faces, back to the titanium alloy component descending path, of the cathodes. Hollowed-out front guard plates are fixed to the side faces, facing the titanium alloy component descending path, of the cathodes. Hollowed-out holes are uniformly formed in the hollowed-out front guard plates. The hollowed-out area is set according to the requirement for the electric field intensity. The flexible sealing rubber plates are fixed to the front ends of the two lower guard plates. When the lifter can drive a titanium alloy component to descend, the flexible sealing rubber plates are attached to the titanium alloy component to enable the oxidized titanium alloy component to be partially separated from the electric field. According to the titanium alloy component print-free micro-arc oxidation treatment device, sheet-like open type cathodes are changed into the cathodes with the closed lower portions, and oxidized titanium alloy is made to be separated from the electric field. Consequently, energy is saved, and erosion of titanium alloy can be effectively prevented.

Description

technical field [0001] The invention relates to the technical field of light metal surface treatment, in particular to an imprint-free micro-arc oxidation treatment device for titanium alloy parts. Background technique [0002] At present, the maximum output average current of micro-arc oxidation power supply at home and abroad is about 500A, according to the oxidation current density of 2A / dm 2 Calculated, the processing area at one time is only 2.5m 2 , for large siding and others over 3m 2 All large-sized titanium alloy parts cannot be oxidized at one time. In recent years, the micro-arc oxidation industry has developed a scanning micro-arc oxidation treatment device and process, which has realized the continuous non-marking micro-arc oxidation treatment of large aluminum alloy parts. However, when this method is used to process large titanium alloy parts, ablation or oxide film peeling often occurs. In view of the fact that it is impossible to manufacture micro-arc o...

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Problems solved by technology

However, when this method deals with large titanium alloy parts, ablation or oxide film peeling often occurs

In view of the fact that it is impossible to manufacture micro-arc oxidation equipment suitable for ultra-large areas at this stage, for large-scale titanium alloy parts, on the premise that the power of the micro-arc oxidation power supply does not increase, research on suitable (no impression and ablation) micro-arc oxidation The treatment device and process are an important way to solve the micro-arc oxidation treatment of large-scale titanium alloys

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