Process for micro-arc oxidation and glazing of magnesium alloy

Abstract

The invention discloses a process for micro-arc oxidation and glazing of a magnesium alloy. The process comprises the following steps: 1, removing paraffin, namely soaking a magnesium alloy workpiece in a Quakerclean69 cleaning agent for 60-180 seconds at 80-100 DEG C under a vacuum condition; 2, performing hydrocarbon cleaning, namely soaking the magnesium alloy workpiece in a PRIME201 cleaning agent for 400-600 seconds at 25-40 DEG C under a vacuum condition; 3, drying, namely putting the magnesium alloy workpiece in a vacuum condition of 100-120 DEG C for 480-720 seconds; 4, performing sandblasting, namely spraying 180-mesh sand to the surface of the magnesium alloy workpiece by using a pressure of 0.2-0.25Mpa; 5, performing micro-arc oxidation, namely soaking the magnesium alloy workpiece in a KOH solution, and connecting the magnesium alloy workpiece and the KOH solution to an anode and a cathode of a 450V and 10A power source; and 6, spraying glaze, namely spraying Lailiya low-temperature glaze of which the concentration content volume percentage is 17-20% and the temperature is 22-28 DEG C to the magnesium alloy workpiece.

Description

technical field [0001] The invention relates to the field of industrial heat treatment and surface modification treatment, in particular to the micro-arc oxidation, pre-treatment and post-glazing process for the surface of magnesium alloys. Background technique [0002] Micro-arc oxidation, also known as plasma oxidation, is to grow a continuous and uniform ceramic film layer on the metal surface in situ through high pressure and high temperature in the micro-arc discharge area, thereby changing the metallographic structure of the surface of magnesium alloy products. The metal-based ceramic film layer has excellent performance, has the advantages of corrosion resistance, wear resistance, biological activity and high hardness, and is widely used in aerospace, machinery, textile and medical equipment and other fields. [0003] For example, the "magnesium alloy micro-arc oxidation electrolyte and micro-arc oxidation method" disclosed in the patent application number: 2013101242...

AI Technical Summary

Problems solved by technology

However, there are still some situations that affect the production and processing efficiency in the implementation process, such as: 1. It needs to be pickled after grinding or degreasing, which is complicated to operate; Oxide or ammonia water adjusts the pH value of the solution to 10~14, and then micro-arc oxidation, the operation is complicated; 3. Water is involved in each step, and the dehydration process is complicated