What are the advantages of surface treatment of products by sandblasting machine?

Sandblasting machine is a kind of equipment commonly used for surface treatment of products. Using sandblasting machine for surface treatment mainly has the following advantages:

First, the cleaning effect is good

Removal of stubborn impurities: Sandblasting machine can effectively remove rust, scale, old paint layer, oil pollution and other stubborn pollutants on the product surface. For example, in metalworking, the thick rust formed on the surface of metal parts stored for a long time can be completely removed by the impact of abrasive sprayed at high speed by sandblasting machine, so as to restore the metallic luster of the parts.

In-depth cleaning of micro-pores: it can clean micro-pores and depressions on the surface of products. For example, there may be tiny pores on the surface of some precision casting parts, and sand blasting can clean the impurities in the pores without damaging the parts themselves.

Second, the surface roughening effect is remarkable.

Enhance the adhesion of coating: After sandblasting the product surface, it can make the surface rough and increase the surface area. When subsequent surface coating treatments such as painting, electroplating and coating are needed, the coating can better adhere to the rough surface. Taking automobile parts as an example, after sandblasting, when the wheel hub is painted, the adhesion between the paint layer and the wheel hub surface is stronger, and it is not easy to peel off.

Optimize the bonding performance between products: for products that need welding, bonding and other processes, the rough surface after sandblasting can provide better bonding conditions. For example, in the construction industry, after sandblasting the steel surface, welding can make the welding more firm, because the rough surface increases the contact area between welding materials and steel.

Third, improve the anti-fatigue performance of products

Introducing beneficial compressive stress: During sandblasting, the impact of abrasive on the product surface will produce certain compressive stress on the surface. This compressive stress can offset part of the tensile stress borne by the product during use, thus improving the fatigue resistance of the product. For example, in the aerospace field, sandblasting some metal parts subjected to alternating loads can effectively prolong the service life of the parts.

Refine the surface grain structure: to some extent, sandblasting can also refine the grain structure of the product surface. Fine grain structure can improve the strength and toughness of materials, making products less prone to cracks and damage during long-term use.

Fourth, environmental advantages

Abrasive can be recycled: Many abrasives used by sandblasting machines, such as glass beads and steel grit, can be recycled. After the sandblasting process is finished, through simple screening and treatment, the abrasive after impurity removal can be used for sandblasting operation again, which reduces the production cost and the generation of waste.

Reduce chemical pollution: Compared with some chemical cleaning and surface treatment methods, sandblasting usually does not involve the use of a large number of harmful chemicals. For example, there is no need to use corrosive chemical reagents such as strong acid and strong alkali to remove rust or old paint layer, thus reducing the pollution to the environment and the harm to the health of operators.

Fifth, high processing flexibility

Products suitable for various materials and shapes: Sandblasting machine can be used for surface treatment of various materials, including metals (such as steel, aluminum, copper, etc.), ceramics, glass, plastics, etc. At the same time, whether the product is plane, curved surface, inner cavity or complex irregular structure, it can be effectively treated by adjusting the parameters such as sandblasting angle, spray gun position and abrasive type. For example, in handicraft production, sandblasting glass handicrafts with complex shapes can achieve local frosting effect and enhance artistic expression.

Different degrees of surface treatment effects can be achieved: by changing the abrasive particle size, sandblasting pressure, sandblasting time and other factors, surface effects with different roughness and cleanliness can be obtained. If very fine surface treatment is needed, use fine-grained abrasive and low sandblasting pressure; If you want to remove a lot of impurities and roughen the surface quickly, you can choose coarse-grained abrasive and higher sandblasting pressure.