Before gluing or painting, be sure to remove stains of grease from the surface. Otherwise, the finish will not be held in exactly those places where there will be oil traces, dust, dirt and other pollution. Each individual surface uses its own individual degreasing agent. Although now there are adhesives that do not need preliminary cleaning. Despite this, degreasing before joining is a very important element that will extend the life of the surface.
Removing stains of grease and oil from a metal surface
When finishing a metal coating, it is necessary to work in rubber gloves, a mask or a respirator. You also need to protect your eyes so as not to get burned if the solution accidentally gets into them. To do this, use special safety glasses. Then you can proceed directly to the work. It is worth taking a sheet of sandpaper and start overwriting the metal surface. This action will save the coating from rust, dirt and dust. When the entire area for gluing is completely processed, you need to wipe it with a rag soaked in a solution for processing metal. This will help remove residual contamination.
Well-proven solution for degreasing metal number 646. Many users give preference to such a tool. If the coating is small in metal, then it can be completely immersed in the finished solution. Then, after thoroughly drying the coating, you can begin work.
How to degrease the surface before gluing? For metal processing, water detergents are used. The TMS-31 or Sintamid-5 solution is very effective for such work. There are rules for phasing the surface. A thorough washing of the coating is done with one of the listed solutions diluted in water. Water temperature is taken about 80 degrees. Wipe the surface for at least ten minutes. Next, washing with running water alternates - first hot, then cold. It is recommended to coat the metal with a solution from the formation of corrosion from above.
Degreasing a wooden surface
You can get rid of old paint, tar or black oil on wood by carefully rubbing it with sandpaper or a brush with metal teeth. If the coating is heavily soiled or crushed, it is necessary to trim the wooden surface with a planer. After this treatment, you can not apply additional solutions, but immediately proceed to bonding. How to degrease the surface before gluing with double-sided tape? You can use an alcohol solution. You can also wash the surface well and let it dry.
How can I degrease the surface before gluing yet? Wood parts lend themselves very well to simple machining. It is worth using a stiff brush.
Organic solvents on wood should be applied with a roller. This will degrease the coating and remove old paint. But chemical compounds are best able to clean the surface. Then they can easily be removed with a spatula.
How can you degrease the surface before gluing plastic?
Such a surface is particularly thoroughly degreased. Plastic is very poorly glued to other materials. Degreasing before gluing can be carried out with a soap solution. Then you should wipe the surface with a rag soaked in acetone. Now, when the plastic dries, it is worth treating it with alcohol-containing solutions. It is necessary to carefully degrease, otherwise a reaction may occur and the surface will be damaged.
It is best to use medical or technical alcohol. When degreasing, there is not much difference. Many users wipe the plastic cover with vodka. Only use it with caution. First, test the solution on a small piece of plastic.
Other surface degreasing methods
In production, a degreasing solution and ultrasound are used to degrease the surface. Here, installations with radiation of the type UZU-0.25 s are used. In this way, any surface is prepared for gluing in minutes.
Alkaline compounds are also used for surface treatment. To increase the quality of cleaning, this solution should be heated. Then the surface is washed with clean water and dried well. The better it is to degrease the surface before gluing the parts under the conditions of production, a specialist with a diploma in chemistry will tell.
Passing the degreasing test
It is necessary to apply a few drops of boiled or distilled water to the treated surface . This is the most affordable and fastest way to check degreasing. This is especially true for metal coatings. With poor cleaning, a drop of water will take a spherical shape and freeze in one place. With perfect cleaning, the drop spreads over the entire surface and becomes flat.
From a vertical coating, water should drain smoothly, leaving a mark. This will mean that the surface is ready for bonding. This test is not entirely suitable for plastic coatings. It may be clean, but a drop will not moisturize it.
Bonding abrasive
This treatment will make the surface more rough, which will improve adhesion. After this treatment, you need to make sure that no dust or dirt remains on the surface. Therefore, wipe the coating with solvent. Then wash it with a brush or vacuum. Having treated the surface with this method, you can get a good gluing result.
How can you degrease the surface before bonding rubber?
You can carry out the treatment with alcohol, gasoline or acetone. It is necessary to withstand the product at a temperature of at least 20 degrees for about ten minutes, until the entire solution has evaporated from the surface. For bonding rubber, special glue is used, which is designed for this work.
Sandblasting
How to degrease the surface before gluing to get a high treatment result? Sandblasting is one of the most popular and practical. It is performed using a solution of quartz sand and water. The mixture is applied by spraying with a special apparatus under high pressure. All dirt or paint residue is immediately removed from the surface. This treatment is widely used for gluing and painting the car body and other machine parts.
After sandblasting, the top of the parts is rough, which makes gluing more resistant. You can still degrease the surface by ionization and pickling. But such a method is used only in production conditions. Such processing is quite expensive. Before degreasing the surface before gluing, thoroughly wash the coating with clean water and allow to dry. Then wipe the parts or surface with a rag with a solvent or technical alcohol. The wiping is carried out until the rag is perfectly clean, without traces of grease and oil.
How to degrease the surface before gluing yet? There are many methods and tools. The most popular methods have been described above. However, before starting treatment, it is necessary to conduct a test in a small area.