Technical requirements for rust prevention of vacuum oil filter

The technical requirements for rust prevention of vacuum oil filter mainly include the following aspects to ensure that the equipment has good rust prevention performance and durability in long-term use:

1. Material selection

- Key component materials: Components in contact with oil (such as filter elements, oil tanks, pipes, etc.) should be made of corrosion-resistant materials, such as stainless steel (such as 304 or 316L) or carbon steel with rust prevention treatment.

- External materials: The equipment housing should be coated with rust-proof coating or sprayed with rust-proof paint.

2. Surface treatment

- Cleanliness: Before rust prevention treatment, all metal surfaces must be thoroughly cleaned to remove oil, rust and impurities.

- Rust removal level: Reach Sa2.5 or above (sandblasting rust removal standard), ensuring that there is no oxide scale and rust on the surface.

- Coating treatment:

- Internal surface: Apply oil-resistant and corrosion-resistant rust-proof coating (such as epoxy resin coating).

- External surface: Spray anti-rust primer and topcoat, the color should meet the equipment requirements.

- Electroplating or galvanizing: Electroplating or hot-dip galvanizing can be used for some parts to enhance the anti-rust ability.

3. Anti-rust oil or anti-rust agent

- Before assembling the equipment, apply anti-rust oil or anti-rust agent to the internal metal parts to prevent rust during transportation and storage.

- Anti-rust oil should comply with relevant standards (such as GB/T 4879) and have good high temperature resistance and anti-emulsification properties.

4. Sealing

- All connecting parts of the equipment should be well sealed to prevent moisture and air from entering and causing internal rust.

- Sealing materials should be oil-resistant and corrosion-resistant, such as fluororubber or nitrile rubber.

5. Environmental adaptability

- The equipment should be able to operate for a long time in high humidity, high temperature or corrosive environment without rusting.

- Anti-rust treatment should meet the requirements of the equipment operating environment (such as coastal areas require stronger anti-corrosion ability).

6. Process requirements

- Spraying process: Spraying should be uniform, without missing, sagging or bubbles, and the coating thickness should meet the design requirements.

- Curing process: The coating needs to be fully cured to ensure adhesion and durability.

- Inspection standards: After the anti-rust treatment is completed, a salt spray test (such as GB/T 10125) or other anti-rust performance tests are required to ensure compliance with the standards.

7. Maintenance requirements

- During the use of the equipment, the status of the anti-rust coating and seals should be checked regularly, and damaged parts should be repaired in time.

- When the equipment is out of use for a long time, the inside of the equipment should be treated with anti-rust (such as nitrogen protection or anti-rust oil).

8. Related standards

- GB/T 4879-2016: Anti-rust packaging standard.

- GB/T 10125-2012: Artificial atmosphere corrosion test (salt spray test).

- ISO 12944: Anti-corrosion protection of coatings and varnishes.

The above technical requirements can ensure that the vacuum oil filter has good anti-rust performance in long-term use, extend the life of the equipment and ensure operational stability.