Contact component cleaning process

The invention discloses a contact part cleaning process, a contact part comprises a base material and a silver contact welded on the base material, the base material comprises copper and/or copper alloy, and the cleaning process comprises an acid pickling process, a light vibration process, an acid activation process and a copper discoloration prevention treatment process. The cleaning requirement of silver contact welding copper or copper alloy is met through acid pickling to remove an oxidation film and copper color, vibration polishing to remove welding slag, acid activation and copper discoloration prevention treatment, namely, the oxidation film layer and the welding slag on the surface of a component and the pure copper color on the surface of a brass component are removed, the cleaned welding component is prevented from being oxidized and discolored again, it can be guaranteed that the silver contact is not corroded, and the service life of the silver contact is prolonged. And meanwhile, the RoHS contr