Hard anodizing-Dalian HanPuJiangXin Precision Machinery Co.

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Hard anodizing

Release time：2020-04-10

Hard oxidation full name hard anodic oxidation treatment. Hard anodic oxidation film thickness of the general requirements of 25-150 um, most of the hard anodic oxidation film thickness of 50-80 um, film thickness is less than 25 um hard anodic oxidation film, used for other occasions of tooth and spiral parts, wear-resisting or insulation with anodic oxidation film thickness of about 50 um, in some special process conditions, the required thickness of production for more than 125 um hard anodic oxidation film, but must pay attention to the anode oxidation film is thicker, its outer microhardness can lower film layer on the surface of the roughness increases. The tank solution of hard anodic oxidation, it is vitriolic acid solution and vitriolic acid add organic acid commonly, wait like oxalic acid, sulfamic acid. In addition, hard anodic oxidation can be achieved by reducing the anodic oxidation temperature or sulfuric acid concentration. Special measures of anodizing may also be considered for deformed aluminum alloys with copper content greater than 5% or silicon content greater than 8%, or for die-cast aluminum alloys with high silicon content.

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Hard anodizing

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