example:DreamTherm 400 topcoat50% of 50% paint, 20% dilution, to construct 100um thickness dry film. In order to ensure the specified dry film thickness, what should be the wet film thickness for the construction of the paint?

4. Theoretical coating rate

For the owner and the contractor is the key factor to calculate the cost and coating dosage, the theoretical coating rate refers to the coating construction on a smooth surface without loss, every 1L of the area can be coated M2, the unit is M2 / L. By this definition, we can obtain the following formula for calculating the coating rate of liquid paint at any given dry film thickness (expressed in square 2 / liter):

(Theoretical) coating rate (m2 / l) = volume solid part 10 / dry film thickness (um)

For example, the solid content of inorganic zinc rich primer is 63%, the dry film thickness is 75um, and the theoretical coating rate is calculated:

5. Actual coating rate

The actual coating rate is the percentage of loss minus the theoretical coating rate. The calculation formula is as follows:

Actual coating rate = theoretical coating rate (1-loss%)

If the theoretical coating rate has been calculated and the loss percentage of the coating can be estimated, such as the loss of 40%, then the theoretical coating rate of the previous inorganic zinc rich primer is 75 microns:

Actual coating rate=Theoretical coating rate（1-40%）=8.4（1-40%）=5.04m2/L

In fact, the loss percentage is uncertain, because the actual construction is affected by a variety of factors, the construction methods, the technology of the work, the shape of the coating, the roughness of the surface, the working environment and the distribution degree of the film paint.

6. the actual amount of paint

The actual amount of coating is obtained on the basis of the actual coating rate and can be calculated according to the following formula:

Actual amount of coating = (area dry film thickness) / 10 volume solid content 100 (1-loss%)

In the above formula, (1-loss%) is the loss coefficient.

Example: there is 2000M2 inside a storage tank, 2 courses of phenolic epoxy coating with a solid content of 76%, each 150 microns, the estimated loss of 40%, calculate how much L of phenolic epoxy coating should be used.

Then 2 coatings to total 6582=1316L

7.paint price calculation

A: Unit price per square meter

In the coating project quotation, paint manufacturers often use different paint products, or even if the same paint and different volume content of the products to quote, and the price of the quotation is different. Is it possible to say that the low price is the low cost? As it turns out, even if the unit price of products with high volume content is high, the unit price per square meter is often lower than those with low volume content.

Unit price per square meter = (dry film thickness unit price / L) / 10 volume solid content

Example: a piece of structure, require construction dry film thickness of 120 micron epoxy primer, traditional epoxy primer solid content is 50%, if the unit price is 32 yuan / L, high solid content modified epoxy primer solid content is 80%, if the unit price is 49 yuan / L, it can be seen that the use of high solid content of modified epoxy primer, lower unit price per square meter.

B: The price conversion of liter and kg

Foreign coating companies in the coating formula design and technical data calculation and packaging specifications, all use the concept of L, domestic companies often with KG to carry out technical data calculation and packaging, the introduction of the concept of quality can be convenient calculation, the density of related data products can be obtained from the manufacturer's data manual.

Price per liter / density = price per kg

Example: an epoxy deiron intermediate paint has a density of 1.8 KG/L and the price of 48.8 yuan / L, then the price of the epoxy deiron intermediate paint per kilogram is 48.8÷1.8=27.11 yuan / KG

Since the density of coatings is usually higher than 1.0 KG/L, unless the dilution of the solvent is sometimes lower than 1.0 KG/L, the price per L looks larger than the unit price per KG.

2. Welcome to order theDreamTherm 400 topcoat

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"Silicone high-temperature resistant paint is composed of silicone resin, special temperature-resistant corrosion-resistant pigments, additives, organic solvents, etc. It is used for high-temperature anti-corrosion on the outer walls of blast furnaces and hot blast furnaces. It can also be used for chimneys, flues, exhaust pipes, high-temperature Hot gas pipes, heating furnaces, heat exchangers and other metal surfaces require high temperature corrosion protection."

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