What should I do if the iron castings are soaked in water soluble rust inhibitor and then sprayed wi

Possible cause 1: There is too much rust inhibitor on the iron casting, which cannot adhere well to the paint.

2. Whether the reinforcing agent when blending paint is moderate.

Do it yourself.

Do not use water-soluble rust inhibitors, because a thin film will form on the surface of the workpiece, and the paint adhesion will not be reached! Some rust inhibitors are difficult to clean, and there will be adhesion that cannot be reached after washing with cleaning agents!

Water-soluble rust inhibitors and paints are insoluble, so no.

For general metal cleaning agents, there is a problem of incomplete cleaning of oil stains, and this cast iron environmental protection anti-rust cleaning agent can be easily achieved, because it is a water-soluble cleaning agent, and has a short-term anti-rust effect, and the water-soluble cleaning agent is not easy to affect the paint. However, the cleaning rate of water-soluble cleaning agents at room temperature is not very high, between 80-90%.

Cast iron environmental protection antirust cleaning agent is composed of high-quality surfactants, organic acids, accelerators, corrosion inhibitors and deionized water, and the product performance is stable. It has super washing power and low foaming. It can remove rust, pollutants (carbon deposits), and oxides.

The treated metal surface has no effect on welding, plating and painting. After rust removal, the original color of the metal is maintained, and it is non-corrosive to the human body.

1.It has strong penetration and cleaning functions, and is suitable for all kinds of metal parts, pipes, gears, bearings, etc.

The value is weak alkaline, no corrosion to copper, aluminum, steel, iron and other metals, and no damage to the metal surface and precision.

3.Contains a particularly effective surfactant, which can penetrate into any difficult-to-clean crevices, quickly peel off the oil and clean out, whether it is a common mechanical lubricating oil, cutting oil or difficult-to-clean anti-rust oil, stretch forming oil has excellent cleaning effect.

4.It is widely used, can be cleaned at room temperature or at high temperature, can be washed by hand, ultrasonic cleaning and high pressure spray cleaning. The key is suitable for copper, cast iron, copper alloy, aluminum, aluminum alloy, aluminum-zinc alloy, alloy steel, etc.

Material problems, bargains are like this.

Summary. Hello dear, glad to answer for you, <>

What is the reason for the water-based industrial paint sprayed on the cast iron and rust? Answer: Paint spray paint rust, the cause of rust 1, water through the cracks of the paint film, pores or bruises to the surface of the steel plate 2, the rust scale before painting can not be completely removed, the rust spots and electric welds should be paid special attention 3, the steel surface is polluted before painting, such as handprints, water traces on the surface that are allowed to dry by themselves, and the surface treatment is intact and cannot be painted in time. 4. The coating is incomplete, there are pinholes, missing coatings and other defects, such as some gaps, epoxy floor paint, and the electric weld is not coated with paint, such as not sealed.

What is the reason for the water-based industrial paint sprayed on the cast iron and rust?

Hello dear, glad to answer for you, <>

What is the reason for the water-based industrial paint sprayed on the cast iron and rust? Answer: Paint spray paint corrosion, the cause of rust 1, water through the cracks of the paint film, pores or bumps to the surface of the steel plate 2, before the coating of the rust can not be completely removed, the rust spots and electric welds should be paid special attention 3, before the painting of the steel surface is polluted, such as handprints, on the surface of the surface of the forest to dry the water traces, the surface treatment is intact and can not be painted in time. 4. The coating is incomplete, there are pinholes, missing coatings and other defects, such as some gaps, ring collapse of the oxygen floor paint, which weld of the electric group is not coated with paint, such as not sealed.

This kind of problem has arisen, how to deal with it? Please reply thanks.

Liked, can you speed up the question?

Appropriate dilution ratio: It is recommended to reduce the proportion of water slightly. Good ventilation:

It is necessary to choose a well-ventilated workshop for cluster construction. The exhaust method is preferable to one-way induction of air, and the exhaust fan on the wall can be used to extract the air. The combination of air supply and diversion of stupid wind is the wind requirements of air supply, which are filtered, dehumidified, and adjusted temperature.

Several industrial fans can also be installed, but the fan can not blow directly to the workpiece at close range, keep a certain distance from the workpiece, and use the swing head to infiltrate the car blowing. Reduce air humidity. For those with less stringent requirements, quicklime can also be sprinkled in the corners of walls and other places to absorb moisture.

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The pro reasons are as follows: 1The pretreatment is not thorough, and there is rust, floating rust or metal oxygen tung burning skin remaining on the surface of the metal workpiece; 2.In the environment of low temperature and high humidity, or the paint film is sprayed too thickly, the speed of water volatilization is relatively slow, which eventually leads to the slow drying speed of the paint film and the occurrence of flash rust; 3.

May be related to the dissolution and precipitation of iron compounds. In an environment with low temperature and high humidity, the contact time between water and metal substrate is prolonged, which in turn produces flash rust (rust); First, quality problems. 1. The resin content is insufficient, resulting in insufficient adhesion of the paint film to steel.

Yan Xixu has too much filler content. 2. Water-based industrial paint is a relatively mature industrial coating, but there are many water-based industrial paints on the market whose quality does not meet the national standard. Why is water-based industrial paint easy to rust?

Second, construction issues. 1. The thickness of the paint film is too thin, less than the roughness too much. The thickness of the paint film of water-based industrial paint, as an anti-corrosion and anti-rust primer, is about 50 m.

2. The treatment of steel structure substrates, before using water-based industrial paint, the rust and oil stains on the brushes must be cleaned up 3. Water-based industrial paint cannot be constructed in an environment where air humidity is greater than 85%; Under the condition of high humidity, a layer of invisible water film will form on the surface of the steel, and it is easy to return to rust when working under this condition. 4. Sea sand cannot be used for sandblasting; Sea sand contains a large amount of chloride ions, which is a major factor in galvanic corrosion. 5. How long does it take for water-based industrial paint to be used up within 1 hour.

Hope mine can help you <>

Do you have any other questions?

The paint model may be selected is not right, seawater is strongly corrosive, the general land paint can not be used at sea, if the process of transportation encounters the same seawater will corrode, the equipment used at sea is generally brushed with three paints, bottom, middle and surface. It may also be that you did not do a good job when you made the paint or the thickness did not meet the requirements, the surface of the cast iron is relatively rough, and the thickness of the dry film of the paint must be ***. In both cases, the former is more likely. Nuclear starvation.

Summary. From the perspective of adhesion theory, in addition to factors such as construction specifications, paint and spraying environment, adhesion is an important influencing factor, so to solve the problem of paint loss, it is necessary to enhance the interlayer adhesion between plastic and metal and paint to form a firm coating.

Hello, I am helping you to inquire about the relevant information and will reply to you immediately.

In the surface painting process of plastic or metal and other substrates, paint is a common poor spraying phenomenon, and there are many factors that cause paint to be removed, from the theory of adhesion, in addition to factors such as construction specifications, paint and spraying environment can be controlled, adhesion is an important influencing factor, so to solve the problem of paint loss, Qi Huai needs to enhance the interlayer adhesion between plastic and plastic and paint to form a solid coating.

Does this have anything to do with rust fixers?

Color steel tiles above.

No. That's what's going on.

You spray rust fixing agent, spray paint and color steel tiles to form a compartment.

Water-based industrial paints use water as the main solvent to create a high level of expertise on metal surfaces, especially high-carbon steel.

and iron castings) brushed with water-based paint.

Due to the presence of water and oxygen in the drying process, corrosion is very easy to occur, and rust spots (spots) appear, which is called flash rust. These flash rusts destroy the adhesion of the coating to the metal surface and will gradually increase the degree of rust in later years, making the coating lose its protective effect. Flash rust is the pole in the construction process of water-based industrial paint.

Problems that are prone to arise have seriously hindered its development.

Measures to prevent and control flash rust.

a.Accelerated drying: The temperature of the construction environment is 5-40 in the early days, and the relative humidity is appropriate.

b.Control the thickness of the paint film: if the thickness of the paint film is uneven, the coating is exposed or the thickness is too low, it will be easy to appear rusty and trapped;

c.Avoid contamination of metal substrates;

d.When the formula is designed, appropriate anti-flash rust additives are added in an appropriate amount.

Water ridge anti-flash rust agent.

The simplest and most effective way to solve flash rust is to use an anti-flash rust agent. Water-based anti-rust agent is an aqueous solution formed by using water as the main solvent and adding other anti-rust substances. There are generally three types of anti-flash rust agents' mechanism of action:

Corrosion inhibition, passivation and shielding can be divided into three categories according to the mechanism of rust prevention

1) Nitrite.

Kind: anti-flash rust agent and metal to form an insoluble and dense oxide film, thus preventing the anodic dissolution of the metal or promoting the passivation of the metal, thereby inhibiting the corrosion of the metal, this kind of product is also called corrosion inhibitor.

or passivators; 2) Phosphates: anti-flash rust agents and metals generate insoluble salts, so that the metal is isolated from the corrosive medium and is free from rust;

3) Metal-organic chelates: anti-flash rust agents and metals form insoluble complexes.

Covers the surface of the metal and protects the metal from corrosion.

Traditional anti-flash rust treatments add nitrite to the formulation, which is reductive because the flash rust phenomenon is caused by electrochemical action.

The release of negative charges can play a good role in corrosion inhibition, but because such substances are too ionic, a large amount of addition will lead to poor long-term water resistance of the paint film. Metal-organic chelate anti-flash rust agent can achieve the effect of corrosion inhibition, passivation and shielding at the same time, this kind of product is a comprehensive cost-effective anti-flash rust agent, and also has a good role in promoting the water resistance and salt spray resistance of the formed dry film.

Products with poor anti-flash rust effect during actual construction often cause very big problems and need to be paid attention to. Choosing the right anti-flash rust agent can not only solve the problem of flash rust, but also improve the long-term water resistance of the paint film, the anti-corrosion in the tank and other comprehensive benefits.