SPC HEATANTICORRPROTECTION has developed a special mixture «ZINTEC^®» possessing protection, which is specific for other types of galvanizing. The product is ready for use and is easily applied by any painting technique at any temperature (-35^оС — +50^оС), humidity and even on the rust.

Use and application of «ZINTEC^®» special mixture

Zinc-rich special mixture «ZINTEC^®» is used in industrial and civil construction, transport construction, oil and gas complex, power engineering, railways, port and river developments, motor transport.

Anticorrosive protection of steel articles and structures operated in atmospheric conditions of all macroclimatic areas, types of atmosphere and categories of location according to GOST 15150-69.

The coating is resistant in fresh and sea water, aqueous salt solutions (pH = 6.0-10.0), ethanol and its aqueous solutions, use in centralized cold-water supply system is allowed.

The coating is not resistant in gasoline and some organic solvents.

«ZINTEC^®» (special mixture for cold galvanizing) specifications

«ZINTEC^®» coating is single-component, liquid (ready for use) consists of chemically pure electrolytic zinc, volatiles and binding agents.

The coating is supplied in tightly closed packaging.

Each packing item has a label indicating:

• manufacturer;
• product identification code;
• lot number ad date of manufacture;
• net weight.

Guaranteed storage life is unlimited, if stored in unbroken original package at -40°С — +30°С. It is recommended to tightly close package during further storage.

Technical specifications of «ZINTEC^®» mixture

Compatibility with other coatings

Zinc-rich special mixture «ZINTEC^®» is easily compatible with 90% solvent-borne finishing coatings. Compatibility with polyurethane, urethane-acrylic, acrylic, epoxide, vinyl, chlorinated rubber and alkyd coatings. It is strongly recommended to wait 4-5 hours after application of cold galvanizing mixture «ZINTEC^®» to achieve ideal compatibility, during this period a solvent will volatilize and not prevent further adhesion.

In aqueous salt solutions (pH = 6-9), fresh and sea water, zinc-rich special mixture «ZINTEC^®» effectively protects steel against corrosion. Zinc corrodes and runs out in time thereby protecting steel. Uniform corrosion rate in sea water is app. 10 mkm per year. For obtaining the best results and to prolong lifetime in sea water it is better to cover coating with polyurethane or epoxy lacquer.

Zinc-rich special mixture «ZINTEC^®» shows better steel protection below ground if it insulated from media by lacquer.

The coating is not resistant in gasoline and some organic solvents so it is recommended to cover it with finishing coating, which is resistant to such media.

Application procedure

It is recommended to apply anticorrosive coating at the temperature not lower than 30°С.

During carrying out of outdoor anticorrosive protection in wintertime it is necessary to:

• build shelter to protect from precipitation;
• Metal surface temperature should be on +3^oС higher than dew point.

Preparation of metal surface for application of coating

All parts of articles that are subject to protection should be accessible for inspection, surface preparation, and application of protective coating and its quality control.

Surface that is subject to preparation before application of coating should be free of burrs, sharp edges (radius less than 0.3 mm), welding splashes, rolls, burn-through and residual flux. Metal constructions’ welding areas (standard sections, plates, etc.) should be free of hidden cracks and cavities. If there is any oil or fat containment clean them using detergents. The metal surface should be prepared before applying «ZINTEC^®» coating:

New steel (metal-roll) with heavy scale is subject to sandblasting to the second degree according to GOST 9-402 and should be degreased.

• new steel (metal-roll) without scale should be degreased;
• old rusty surface — loose rust is eliminated manually or mechanically (scrubbing) or by high-pressure fresh water (10-20 mPa) and then the surface is degreased;
• previously zinc-coated surface — containment and upper layer of zinc salts are is eliminated manually or mechanically (by high pressure fresh water 10-20 mPa) and then the surface is degreased;
• previously painted surface — paint should be eliminated chemically, by remover (manually or mechanically by extra-high pressure water 175-275 mPa) and then degreased.

In manual abrasive machining of surface with fine wheel or sand paper, abrasive grit should be in 5-6 range according to GOST 3647-71 or in 180-220 range according FEPA standard. Remove dust from surface after manual and mechanical cleaning. Presence of bare places is not allowed.

Compressed air used for cleaning should be dry and clean and meet the requirements of GOST 9.010-80.

Preparation of mixture

During degreasing of small areas of surface use brush wetted with solvent, xylene. The mixture is applied on clean and degreased surface not later than after 12 hours, if metal constructions are outdoors and 48 hours, if indoors.

«ZINTEC^®» mixture is ready for use and application by brush, roller, and spray gun. The material can be diluted with solvents (petroleum, coal-tap), xylene, if necessary. Dilution of «ZINTEC^®» mixture with other solvents is not allowed. «ZINTEC^®» mixture should be should be thoroughly stirred with mixer till total homogeneity.

Material application

The mixture is applied on clean and degreased surface not later than after 12 hours, if metal constructions are outdoors and 48 hours, if indoors. Despite of chosen method of application of mixture on prepared surface, welds and hard-to-reach places should be firstly painted by brush. In case of cracks and hidden openings after welding eliminate possibility of ingress of moisture into them (by any nonpolluting means of waterproofing).

«ZINTEC^®» mixture can be applied on the surface by brush, roller, and spray gun or by means of dipping.

• Brushing:
  A brush should be from natural bristle, free of dust and containment. Dilution of «ZINTEC^®» mixture under standard conditions is not required.
• Roller application:
  A roller should be made from organic solvent resistant material, free of dirt and previously used painting materials. Dilution of «ZINTEC^®» mixture under standard conditions is not required.
• Hydraulic spraying:
  Equipment should be free of containment and previously used painting materials. Dilute, if necessary, with solvent or xylene in the ratio till 5% by weight. Air pressure – 0.2–0.3 mPа (2–3 bar). Nozzle diameter — 2.0–3.0 mm.
• Airless spraying:
  Equipment should be free of containment and previously used painting materials. Dilute, if necessary, with solvent or xylene in the ratio till 4% by weight. Air pressure — 8–12 mPа (80–120 bar). Nozzle diameter — 0.0015–0.025 inches, 0.38–0.68 mm.
• Dipping:
  Dilute, if necessary, with solvent or xylene in the ratio till 15% by weight.

If applied by any of above-mentioned methods «ZINTEC^®» mixture should be stirred regularly (each 20–30 minutes).

The material is to be applied layer-by layer, covering edge of previous line.

Total thickness of coating should be min 40 mkm – max 160 mkm. When applied on constructions with minor mechanical strains, maximum thickness of application can be increased to 200 mkm.

All application works are carried out at –30^оC-+50^oС and relative humidity up to 90%.

The mixture can be applied on wet surface. But the surface should be free of moisture as drops and at negative temperatures avoid crust of ice. It is recommended to use shelters in application of coating under rain or snow conditions.

Anticorrosive works quality control

Defect elimination and repair

Transportation and storage