Large-size titanium alloy structure micro-arc oxidation based on scanning cathode and verification method

A micro-arc oxidation, large-scale technology, applied in the direction of electrolytic coating, surface reaction electrolytic coating, coating, etc., can solve the problems of reducing corrosion resistance fatigue performance, complicated process control, poor wear resistance, etc., and achieve the goal of reducing mechanical properties impact, broad application prospects, and the effect of promoting high performance

CN109537022AInactive Publication Date: 2019-03-29CHINA SPECIAL TYPE FLIER RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-03-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a large-size titanium alloy structure micro-arc oxidation based on scanning cathode and an experimental verification method thereof. Through theoretical design and experimentalresearch and other manners, a large-size titanium alloy structure surface one-time micro-arc oxidation technology is achieved, the key technologies of scanning cathode device design, one-time large-area micro-arc oxidation technical process regulation and control and the like are achieved, thereby solving the problems of micro-arc oxidation process and film surface quality of large-size structural parts and improving the capacity of one-time area treatment to be more than 4m<2>, the oxidation efficiency is greatly improved, and a foundation is laid for micro-arc oxidation treatment on the surfaces of light alloy large-sized parts, such as aluminum alloy, magnesium alloy and the like, and complex parts.
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Description

technical field

[0001] The invention belongs to the technical field of light metal surface treatment, and in particular relates to a scanning cathode-based micro-arc oxidation of a large-scale titanium alloy structure and a verification method. Background technique

[0002] Micro-arc oxidation technology became an international research hotspot in the middle and late 1980s. Since the 1990s, countries such as the United States, Germany, Russia and Japan have accelerated the research and development of micro-arc oxidation technology, and have applied it in petroleum, textile, aerospace, weapons, Ships and other fields began to be applied. Since the introduction of micro-arc oxidation technology into China in the late 1990s, many domestic units have carried out research work one after another. The micro-arc oxidation film layer is a ceramic structure with a certain degree of brittleness. It is easy to produce microcracks under the interaction of external force and load, which ...

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Embodiment Construction

[0047]The specific implementation manner of the present invention will be described in detail in conjunction with the summary of the invention and the accompanying drawings.

[0048] The micro-arc oxidation method of large-scale titanium alloy structure based on scanning cathode established in the patent of the present invention, the main research contents include: scanning cathode device design, scanning cathode micro-arc oxidation process research, micro-arc oxidation film thickness characteristics research and large-scale Experimental verification study of micro-arc oxidation of titanium alloy.

[0049] a) Scanning cathode device design

[0050] Design two scanning cathodes with different structures, closed and semi-closed, carry out the influence of scanning cathode structure on micro-arc oxidation, and optimize the scanning cathode structure.

[0051] 1) Effect of closed scanning cathode on micro-arc oxidation

[0052] In order to prevent the loss of the electric field,...