Normal temperature aluminum hard anodioxide is also called ordinary oxide film thickness is generally 5-15 microns, the hardness of 200-400HV.
Low-temperature oxidation is generally used for hard oxidation, hard oxidation characteristics
1: The color membrane layer is gray. brown. Ink green to black, related to the material composition and process, and the lower the temperature, the thicker the film layer, the darker the color.
2: Hardness oxide film is extremely hard, HV=1200-1500 hardness on pure aluminum, reduced hardness on alloy aluminum.HV=400-800. With microwells.
3: The thick film layer can reach up to 250 microns, so also known as thick film oxidation.
4: Corrosion has extremely high corrosion resistance, especially in the industrial atmosphere and marine climate.
5: Insulation and adiabatic dural film resistance, 100 microns, can withstand more than 2000 volt, melting point of 2050 degrees Celsius, thermal conductivity is low to 67KW/(M.K), is an excellent thermal resistance material.
6: The binding force and the body binding is very strong and solid.
Due to the properties of aluminum hard anodidic oxidation, it is widely used.It is mainly used for heat resistance, wear resistance and high insulation performance requirements of aluminum parts, such as piston, cylinder, bearing, water and electricity equipment impeller, etc.
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