How to paint on galvanized square pipe, how to paint, what paint to use?

Ordinary paint for galvanized pipes.

The adhesion is poor, can not play a protective role, and is easy to fall off and lose protection. The traditional phosphate primer and epoxy zinc yellow contain hexavalent chromium.

Ions, which have carcinogenic effects, are inevitably replaced by new products. At present, it is understood that an ED1000 epoxy primer is a high-quality product specially designed for the coating of galvanized pipe materials. This product is not only environmentally friendly and low VOC, but also meets EU standards.

The specific construction methods are as follows:

1) Use matching solvent to wipe the galvanized sheet.

surface, remove oil and grease, prevent adhesion, if there is rust and sand, can be cleaned, no need for overall sandblasting or sanding.

2) Coated with ED1000 epoxy primer, the paint will be with the curing agent.

Mix according to the ratio and add an appropriate amount of diluent.

Stir evenly and spray to achieve the required film thickness.

3) Coating matching topcoat, taking PU800 acrylic polyurethane topcoat as an example, mix the paint and curing agent according to the ratio, add an appropriate amount of diluent, stir evenly, and spray to achieve the required film thickness.

4) Check whether the thickness of the paint film is up to standard, whether the color is uniform and consistent, whether there are problems such as leakage and blistering, and repair it in time after discovery.

Precautions: 1) The ambient temperature is 5-40, and the relative air humidity is not more than 75%.

2) The coating interval of each paint is the surface drying time, and the primer and topcoat coating interval is 24 hours.

3) The primer and topcoat are made of special curing agent and thinner, which cannot be mixed.

4) The mixed paint is used up within 4 hours to avoid gelatinization of the paint.

Technology is advancing with each passing day. In addition to ED1000 epoxy primer. I also learned that a PU1000 (W) bottom surface integrated coating, which is also a paint dedicated to the surface of galvanized pipes, can be used if the anti-corrosion requirements are not particularly high.

One-time coating molding, generally spraying 1-2 can be completed, than ED1000 epoxy primer more construction links.

It is recommended to use zinc-rich paint to paint, and you can choose to spray another layer of silver-gray zinc-rich paint, which can increase the thickness of the zinc layer and achieve a better anti-rust effect.

The surface of the galvanized steel pipe is very smooth, which leads to poor adhesion of how much paint and is prone to the problem of peeling off the paint. After galvanizing, the steel pipe has a certain degree of rust resistance, but in long-term use, especially in harsh environments, it is easy to corrode, and the use of paint spraying is a more effective protection method.

Galvanized steel pipes need to use special paint to ensure that the paint film does not fall off. ED1000 epoxy primer, dedicated to the surface of galvanized substrates, has a variety of characteristics:

It can be used for galvanized pipe, galvanized sheet, aluminum plate, aluminum alloy, stainless steel and other smooth surface metal coating to ensure that the paint film does not fall off.

The paint film has good salt spray resistance, reaching 1000 hours, and has good anti-corrosion and anti-rust effect, which can better protect the substrate.

The surface of the substrate does not need to be sandblasted, no grinding, and solvents can be used to remove the surface oil, which saves manpower and material costs.

The paint does not contain heavy metals, is lead-free and chromium-free, meets the EU solvent emission standards, and is suitable for export workpiece coating.

The galvanized steel pipe is coated with a primer and a topcoat matching method, the primer is gray, which improves the adhesion and anti-rust ability, the topcoat has a variety of colors, good appearance decoration, aging resistance, high weather resistance, and adapts to various environments. Commonly used supporting schemes:

ED1000 epoxy primer + FC1200 fluorocarbon paint.

ED1000 epoxy primer + PU800 acrylic polyurethane topcoat.

Hello dear! Galvanized pipes can use "two-component zinc oxide yellow primer" as a primer paint, which must be brushed by hand, not roller coating, and a thin layer is enough. Then spray the corresponding topcoat, for example, you can spray an acrylic polyurethane paint on the surface, generally spraying a thickness of about 60 microns, to achieve double protection.

Phosphating treatment is required before painting: it is to use phosphoric acid to passivate the surface of the galvanized pipe to improve the roughness and adhesion of the galvanized pipe surface. Before painting the galvanized pipe, it is necessary to polish it, and it can be slightly polished to avoid damaging the anti-corrosion layer of the galvanized pipe itself, and to remove the dirt on the galvanized pipe.

Question: Why is the galvanized iron pipe easy to dissolve when it is made of silver powder paint?

Ask questions to spray silver powder and paint firmly.

Didn't do the processing sand turbine casually grind.

Dear, the outer layer needs to be cleaned up.

On the galvanized square pipe, you can use a professional galvanized pipe special primer ED1000 epoxy primer.

ED1000 epoxy primer is a primer product specially used for stainless steel, galvanized substrate, aluminum alloy and other light metals, which solves the problem that the traditional epoxy yellow primer is not environmentally friendly.

ED1000 epoxy primer has a variety of features:(1) Strong adhesion to the metal of various smooth substrates to ensure that the paint film does not fall off and does not fall off (2) The salt spray resistance can reach 1000 hours, and the corrosion resistance is excellent (3) The substrate does not need to be sandblasted or polished, and the surface is wiped with solvents, and the construction can be carried out after removing the oil stains, saving time and effort.

4) The paint does not contain heavy metals such as lead and chromium, and has no harm to health and the environment (5) ED1000 epoxy primer has two specifications, oily and water-based, which can adapt to different construction requirements.

If you feel that the thickness of the zinc layer is not enough, you can use zinc-rich paint to brush or spray to increase the thickness of the zinc layer of the galvanized pipe and ensure a better anti-rust effect.

If the galvanized pipe needs to be welded or cut, it is necessary to use anti-rust paint with high zinc content to paint the welding or cutting place to achieve the effect of anti-rust.

The general anti-rust paint and epoxy zinc-rich primer on the galvanized pipe are not suitable for use on it, and now the more used is the epoxy zinc phosphate primer, and the special primer specially made for galvanized parts. The steps of making paint are almost the same, in the early stage, it is necessary to do a dusting, drying, and frosting treatment on the substrate, and then choose according to the construction conditions to see whether it is spraying or brushing and other processes - Hangzhou Yasheng paint.

The commonly used orange round surface treatment is sandblasting and rust removal. If the surface treatment of the welding part on site, or the surface treatment of the smile mold in a small area, power tools can be used to polish and remove rust.

Less commonly used surface treatments include flame rust removal, pickling rust removal, etc.

After the surface of the galvanized pipe is treated, it is recommended to use zinc-rich paint with high zinc content to repair the zinc layer.

1. A suitable primer must be used on the galvanized surface, and the yellow layer should be a zinc yellow primer.

2. You can spray an acrylic polyurethane paint on the surface, and the general spraying thickness is about 60 microns.

3. ** in tens of yuan per kilogram.

The galvanized surface can not be coated with other paints casually, it will fall off after a long time, but it is not so complicated, what kind of paint do you paint with yellow paint, it is recommended to try it first. If not, you do what I say, and there will be no problem 100%.

Zinc Epoxy Phosphate Antirust Primer 70 microns.

Epoxy micaceous iron intermediate paint 120 microns.

Then you can paint whatever you like on it.

The galvanized surface must use a suitable primer, the yellow layer you spray should be a zinc yellow primer, so that the surface is sprayed with an acrylic polyurethane paint on the line, the general spraying thickness is about 60 microns, ** it is best to ask the manufacturer, the general paint is tens of yuan per kilogram.

Spray a layer of anti-rust paint, and then spray a layer of porcelain white paint to keep the color of the wall consistent.

This is where it can be opened.

This is where it can be opened.

To put it simply: aEasy to implement, b, easy to remember, cSimple to write, dConform to the habits of use.

There are only two states, 0 and 1, and there are many electronic devices that need to represent the two states, such as the switching on and off, and the transistor on and off

Positive and negative remanence of magnetic elements

Both the low and high levels of the potential level can represent two numbers.

With binary, the electronics are feasible to implement.

The simplicity of binary numbers has few algorithms and simple operations, which greatly simplifies the hardware structure of computer combinators.

The decimal multiplication ninety-nine formula table has 55 formulas, while binary multiplication has only 4 rules).

LogicalSince binary 0 and 1 correspond to the false (false) and true (true) of logical algebra, there is a theoretical basis for logical algebra, and it is natural to use binary to express binary logic.

Reasons why computers adopt binary:

1. The technical implementation is simple.

The computer is composed of logic circuits, and the logic circuits usually have only two states, the switch is turned on and off, which is exactly represented by "0" and "1".

2. The operation rules are simple, the sum of two binary numbers,

The combination of product operations is simple.

3. It is suitable for logical operation, and it can be opened at this time.

This is where it can be opened.

Binary has only two numbers, which coincide with the "true" and "false" in logical algebra.

4. Easy to convert, binary and decimal number conversion is simple.

Binary is a system of numbers that is widely used in computing technology.

Binary data is a number represented by two numbers, 0 and 1.

Its cardinal number is 2, the carry rule is "every two into one", and the borrowing rule is "borrow one to become two", which was discovered by Leibniz, a German master of mathematical philosophy in the 18th century.

Current computer systems use basically binary systems, and data is stored in computers mainly in the form of complements.

Binary in a computer is a very tiny switch, with "on" for 1 and "off" for 0.

It's not that complicated, just byte spraying.

It is also possible to use ordinary nitro paint. **Low.