Surface treatment of machined parts:
1. On the surface of machined parts, there should be no defects such as scratches, abrasions, etc. that damage the surface of the parts.
2. The surface of the processed thread is not allowed to have defects such as black skin, bumps,random buckles and burrs. All steel surfaces that need to be painted must be removed from rust, scale, grease, dust, mud, salt and dirt before painting.
3. Before rust removal, use organic solvent, lye, emulsifier, steam, etc. to remove grease and dirt on the surface of steel parts.
4. The time interval between the surface to be coated by shot peening or manual rust removal and the primer coating shall not be more than 6h.
5. The surfaces of the riveted parts in contact with each other must be coated with anti-rust paint with a thickness of 30~40um before connecting. Lap edges should be closed with paint, putty or adhesive. Primer damaged due to processing or welding, to be repainted.
Sealing treatment of machined parts:
1. Each seal must be soaked with oil before assembly.
2. Strictly check and remove the sharp corners, burrs and foreign objects left in the processing of parts before assembly. Make sure that the seals are not scratched when they are installed.
3. After bonding, the excess adhesive that flows out should be removed.
