Components must undergo the following processes before assembly:
1. According to the processing requirements, some parts need to be polished, and there should be no processing burrs on the surface.
2. All parts are degreased.
3. After degreasing is completed, pickling and passivation is carried out, and the cleaning agent does not contain phosphorus.
4. Rinse with pure water after pickling and purification, and there should be no chemical residues. This step is omitted for carbon steel parts.
5. Wipe the parts with non-woven fabrics one by one, and do not leave the surface of the parts such as wire hair, or dry them with clean nitrogen.
6. Wipe the parts one by one with non-woven fabric or precision filter paper dipped in analytical pure alcohol until there is no dirty color.
