Anti-corrosion compounds for car body treatment
Name of the composition | Brand | Working viscosity, in sec. at 200°C according to VZ-4 | Type of solvent, diluent | Drying mode | |
°C | min. | ||||
| Automotive threshold preservative | "MOVIL" | 15 – 40 | White spirit, gasoline | 20 | 20 – 30 |
| Protective lubricant, non-drying | NGM-ML | 45 |
| 20 | 15 |
| Protective film coating | NG-216B | 18 – 22 | White spirit | 20 | 20 |
| Anti-noise mastic | BPM-1 | high viscosity | White spirit, gasoline | 100–110 | 30 |
| Polyvinyl chloride plastic | Plastisol D-11A | high viscosity | – | 130 | 30 |
| Polyvinyl chloride plastic | Plastisol D-4A | high viscosity | – | 130 | 30 |
| Non-drying mastic | 51-G-7 | high viscosity | – | – | – |
The areas most susceptible to corrosion are the load-bearing hollow sections of the body, the bottom, the lower parts of the doors, pillars, as well as the joints of body parts, including spot welding.
Corrosion develops most quickly in hidden cavities and lower parts of the body when moisture, dirt, salts, and acids come into contact with the surface.
In this regard, during the operation of the vehicle, additional protection of the internal surfaces and hidden cavities of the body is required by applying special anti-corrosion compounds, and in the joints of parts by applying sealing mastics.
The materials used for anti-corrosion treatment are listed in the table Anti-corrosion compounds for body treatment.
The article is copied from the website vazbook.ru
Auto preservative "Movil" is used for processing hidden cavities. It is recommended to process cavities every 1-1.5 years. Auto preservative "Movil" allows processing surfaces previously coated with nigrol or other oils, as well as rusty surfaces.
Protective lubricant NGM-ML is used for processing hidden cavities. This material is used to process hidden cavities of new cars.
Protective film coating NG216B is used to cover parts of the car under the body.
Bitumen anti-noise mastic BPM-1 is used to protect the underbody from corrosion and to reduce noise from vibration. The mastic is applied by spraying or manually with a thickness of 1.0–1.5 mm.
Plastisol D-11A is used to protect the underside of the car body from corrosion, abrasive wear and for noise insulation. Coating thickness is 1–1.2 mm. Plastisol adhesion to EF-083 and FL-093 primers.
Plastisol D4A is used for sealing welded seams on the outer areas of the body.
Non-drying mastic 51-G-7 is used for sealing body joints.
The anti-corrosion substance is sprayed into the internal cavities using air or airless spraying.
Air spraying requires compressed air with a pressure of 0.5-0.8 MPa, a spray gun with a tank, hoses and extension nozzles for the gun. The best coating quality is achieved with airless spraying under a pressure of 412 MPa, which allows spraying materials of significant viscosity.