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12-4-antikorrozionnaya-zashhita-kuzova.html
12.4. Anticorrosive protection of a bodyBearing hollow profiles of a body, the bottom, the bottom parts of doors, racks, and also connections of details of a body, including a spot welding place are most of all subject to corrosion.
Quickly corrosion develops in the latent cavities and the bottom parts of a body at hit on a surface of a moisture, a dirt, salts, acids.
In this connection while in service the car additional protection is required: internal surfaces and the latent cavities of a body – drawing of special anticorrosive structures, and connections of details – drawing of sealing mastics.
Anticorrosive structures for body processing
№
SOFTWARE |
The structure name
|
Mark
|
Working viscosity, in сек, at 20 ° on ВЗ-4
|
Kind of a thinner, solvent
|
Drying mode
|
|
t, ° WITH
|
Time, mines
|
| 1 | Autopreservative of thresholds |
«МОВИЛЬ»
|
15–40
|
Uajt-spirit, gasoline
|
20
|
20–30
|
| 2 | Protective lubricant, non-drying |
NGM-ML
|
45
|
Uajt-spirit
|
20
|
15
|
| 3 | Protective film covering |
НГ-216Б
|
18–22
|
Uajt-spirit, gasoline
|
20
|
20
|
|
High viscosity
|
ксилол, сольвент
|
90
|
30
|
| 4 | Mastic antinoise |
БПМ-1
|
(Or 24 hours at 18–20 ° With
|
| 5 | Plastic compound
Polychlorine-vinyl |
Д-4А
|
High viscosity
|
–
|
130
|
30
|
| 6 | Mastic non-drying |
51-G-7
|
High viscosity
|
–
|
–
|
–
|
Applied materials for anticorrosive processing are specified in the table. Autopreservative «МОВИЛЬ» is used for processing of the latent cavities. It is recommended to process cavities every 1-1,5 year. Processing of surfaces, before covered нигролом and other oils, and also rusty surfaces is supposed.
Protective lubricant of NGM-ML is applied at processing of the latent cavities. This material processes cavities of all new cars.
Protective film covering НГ-216 Would be used for a covering of parts of the car under a body.
Mastic antinoise bitumen БПМ-1 is applied to protection against corrosion of the bottom of a body and for reduction of noise of vibration. Put mastic dispersion or manually in the thickness of 1,0-1,5 mm.
Пластизоль Д-4А it is applied to hermetic sealing of welded seams on external zones of a body.
Non-drying mastic 51-G-7 is used for hermetic sealing of joints of a body.
In internal cavities anticorrosive substance напыливается in the way of air or vacuum dispersion.
At air dispersion compressed air with pressure 0,5–0,8 МПа, a pistol-kraskoraspylitel with a tank, hoses and the extended nozzles for a pistol is required. Better quality of a covering is reached at vacuum dispersion under the pressure of 4–12 МПа which allows to spray materials of considerable viscosity.
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