Surface treatment method for magnesium alloy
A surface treatment, magnesium alloy technology, applied in the field of metal surface treatment, can solve the problem that the wear resistance of the magnesium alloy conversion film layer has not been greatly improved, this layer of oxide film is easily corroded by strong acid and strong alkali, and the magnesium alloy crystal Inter-corrosion and other problems can be achieved to shorten the preparation time, improve the convenience and effect, and enhance the quality
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[0022] A surface treatment method for a magnesium alloy, comprising the steps of:
[0023] (1) One-time water washing: wash the magnesium alloy material with clean water to remove impurities and dust;
[0024] (2) Degreasing treatment: put the magnesium alloy material into the degreasing liquid, heat to keep the temperature of the degreasing liquid at 38-40°C, and complete the degreasing treatment after 20-25 minutes; the degreasing liquid consists of the following substances by weight: 5 parts Sodium nitrilotriacetate, 4 parts of sodium silicate, 3 parts of alkylphenol polyoxyethylene ether, 15 parts of sodium tripolyphosphate, 3 parts of fatty alcohol polyoxyethylene ether, 300 parts of water;
[0025] (3) Secondary water washing: wash the degreased magnesium alloy material with clean water, and dry it for later use;
[0026] (4) Primary pickling: Put the magnesium alloy material treated in step (3) into the primary pickling solution, heat to keep the solution temperature a...
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