Enamel HS-759

Specifications :

No	Name of the indicator	Requirements TNPA
		PrimerHS-059	Enamel HS-759	Lac CH-724
one	Color of lacquer on iodometric scale, mg of iodine, not darker	–	–	0.5
2	Film color	Red-brown, the shade is not normalized	Must be within tolerances of an approved color swatch.	–
3	The appearance of the film	Uniform, without wrinkles “craters”, drips and foreign inclusions		Uniform, glossy, without wrinkles, craters, drips and foreign inclusions
four	Conditional viscosity by VZ-246 viscometer with a nozzle diameter of 4 mm (or VZ-4) at a temperature of (20.0 ± 0.5) ° С, s	30 – 65	30 – 50	20 – 40
five	Mass fraction of nonvolatile substances,%	38 ± 2	33 ± 3	22 ± 2
6	Hiding power of dried film, g / m 2 , not more than, for enamels: white light gray gray	– – –	90 60 50	– – –
7	Drying time of the film at a temperature of (20 ± 2) ° С, h, not more than degree 3 to degree 4 to degree 5	one 24 –	one 24 –	2 – 24
eight	Flexural elasticity of the film, mm, not more	3	3	five
9	Grinding degree, µm, not more, for enamels: white light gray gray primer	– – – 40	thirty thirty 35 –	– – – –
ten	Adhesion, points, not more	2	–	–
eleven	Film hardness by pendulum device M-3, conventional units, not less	0.45	0.45	0.50
12	Shelf life (viability) at a temperature of (20 ± 2) ° С, h, not less	eight	eight	–

 

The coating system must comply with the standards specified in the table:

No	Name of the indicator	Requirements TNPA
one	Adhesion, points, not more	2
2	Resistance at (60 ± 2) ° С, h, not less than to the action of 25% solutions of acid-sulfuric, nitric salt sodium hydroxide	12 eight 12
3	Resistance at temperature (20 ± 2) ºС to the static effect of gasoline, h, not less	24
Note: the resistance of the coating to the static action of acids is checked in one acid from those indicated in subparagraph 2 of the table.

 

Advantages:  Primer, enamel and varnish are used to obtain a chemically resistant paint coating to protect the surface from the effects of corrosive and alkaline environments.

The primer is allowed to be used under weather-resistant perhlvinyl enamels of the HV brand and enamels based on vinyl chloride copolymers.

 

Surface preparation:  Preparation of the surface of the product for painting is carried out in accordance with the requirements of the TNP on the product,
GOST 9.402 or STB ISO 12944-4.

Oil, grease, marking paint, dirt and other substances, such as mineral contaminants, water-soluble salts that affect the quality of surface preparation, should be removed from the metal surface. It is necessary to remove incisions, burrs, welding spatters, round sharp edges, corners, teeth and welding seams. Then the surface should be thoroughly cleaned of rust, scale and other contaminants, dust-free, degreased and dried. It is most thoroughly necessary to clean the surface in the weld zone up to 3 cm wide from residues of fluxes, alkaline slags and oxides formed during welding.

To improve the protective properties of the surface, it is recommended to pre-clean the sandblasting or shot blasting to the degree of cleaning oxides 1 – 2 according to GOST 9.402.

 

Application:  before use, hardener No. 3 or hardener No. 5 is introduced into the primer and enamels.

The mass fraction of the injected hardener No. 3 for the XC-059 primer is 2.8%, and the hardener No. 5 is -2.6%. For enamel ХС-759 of hardener №3 – 3.0%; for hardener number 5 – 2.8%.

To dilute the primer, enamels and varnish to a working viscosity of 14 – 16 s using a VZ-246 type viscometer (or VZ-4) with a nozzle diameter of 4 mm at a temperature of (20.0 ± 0.5) ° C, apply solvents P-4, Р-4А in
accordance with GOST 7827.

Primer, enamel and varnish applied to the surface by means of pneumatic spraying.

The consumer independently selects the working viscosity depending on the working conditions (ambient temperature in the room, the diameter of the spray nozzle, the working pressure of compressed air, etc.).

In case of storage at low temperatures, the primer, enamels and lacquer are kept in a warm room before application (to avoid moisture condensation on the painted surface during painting) for at least
24 hours.

In the case of surface cleaning with a sandblasting or shot blasting method, the coating thickness should be increased taking into account the degree of surface roughness Ra (GOST 2789).

 

The consumption of  primer, enamel and varnish on a single-layer coating is 120-150 g / m², 130-160 g / m² and 100-120 g / m², respectively, without taking into account the complexity of the painted surface, its preparation, application method, color, staff qualifications and other factors. .

 

Storage : Primer, enamel and lacquer should be stored in a tightly closed container, out of the reach of children, protected from moisture and direct sunlight. Keep away from fire.

 

Precautionary measures : Persons associated with paint work must be provided with personal protective equipment (workwear, goggles, rubber gloves).

When carrying out painting works and after they finish, ventilate the room. The dried coating does not have a toxic effect on the environment and the human body.