1. Different thickness:
The thickness of hard oxidation is thicker than that of ordinary oxidation. Generally, the thickness of ordinary oxide film is 8--12UM, and the thickness of hard oxide film is generally 40--70UM.
Second, the hardness is unreasonable:
Hardness: general oxidation HV250--350, hard oxidation general HV350--550.
Three, the temperature is different:
Generally, it is around 18-22°C, and it can reach 30°C with additives. If the temperature is too high, powder or cracks will easily appear; hard oxidation is generally below 5°C. Relatively speaking, the lower the temperature, the higher the hardness.
Anodic oxidation is carried out under the condition of high voltage, which is an electrochemical reaction process; while conductive oxidation (also called chemical oxidation) does not need to be energized, it only needs to be soaked in liquid medicine, it is a pure chemical reaction.
Anodic oxidation takes a long time, often tens of minutes, while conductive oxidation only takes a few tens of seconds
The film produced by anodic oxidation has a few microns to tens of microns, and is hard and wear-resistant; the film produced by conductive oxidation is only 0.01-0.15 microns, and the wear resistance is not very good, but its advantage is that it is both conductive and resistant to atmospheric corrosion
