Cylinder-shaped part microarc oxidation fixture and using method thereof

Abstract

The invention provides a cylinder-shaped part microarc oxidation fixture and a using method thereof. The cylinder-shaped part microarc oxidation fixture includes a threaded rod, a gland nut, an upper support, a lower support and a clamping device; the gland nut is sleeved on the threaded rod, the lower surface of the seam allowance of the gland nut is connected with the upper surface of a boss of the upper support, and the lower support is arranged at the end part of the lower end of the threaded rod and is placed below the upper support; the clamping device comprises at least two groups of clamping units, and each group of the clamping units include a pressing rod, a connecting rod and a supporting nail; one end part of the pressing rod is arranged on the upper support, the other end of the pressing rod is provided with the supporting nail, one end of the connecting rod is arranged on the pressing rod, and the other end of the connecting rod is arranged on the lower support; the clamping units are uniformly distributed around the upper support. The cylinder-shaped part microarc oxidation fixture has the advantages of simple structure, low manufacture cost, convenient operation and strong reliability, and is suitable for microarc oxidation treatment of aluminum, magnesium and titanium and alloy specimens thereof.

Description

technical field [0001] The invention belongs to the technical field of micro-arc oxidation, and in particular relates to a clamp for micro-arc oxidation of a cylindrical part and a use method thereof. Background technique [0002] Micro-arc oxidation is a surface treatment technology that can directly grow ceramic layers in situ on the surface of Al, Mg, Ti, etc. and their alloys under the action of instantaneous high temperature and high pressure generated by micro-arc discharge. By adjusting the matching of electrolyte components and power supply parameters, a ceramic film layer consisting mainly of matrix element oxides accompanied by electrolyte components is formed on the metal surface to improve the surface hardness, wear resistance and corrosion resistance of the base metal. . [0003] In micro-arc oxidation, the cathode of the power supply is generally connected to the tank made of stainless steel, and the anode is connected to the parts. In the micro-arc oxidation...

AI Technical Summary

Problems solved by technology

If the contact between the fixture and the surface of the part is loose, due to the high pressure generated during the micro-arc oxidation process, a short circuit phenomenon will often occur at the contact point, and a sparking phenomenon will occur near the contact point, which will affect the micro-arc oxidation process on the one hand, and on the other hand. Oxide film quality near the contact point

After the micro-arc oxidation is finished, scars are often left at the contact point between the fixture and the part. For parts with appearance quality requirements, it affects the appearance and decoration requirements of the parts

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