Which abrasives are suitable for surface treatment by rotary automatic sandblasting machine?

When the rotary automatic sandblasting machine carries out surface treatment, different abrasives can be selected according to the material of the workpiece, surface treatment requirements and process cost. The following are some common suitable abrasives:

Corundum abrasive

Brown corundum

Composition and characteristics: The main component is alumina with a content of about 95%, and it also contains a small amount of impurities such as titanium oxide and silicon oxide. It has the characteristics of high hardness, good toughness and strong wear resistance.

Scope of application: It is suitable for surface rust removal, paint removal and scale removal of various metal materials, such as steel, stainless steel and aluminum alloy, as well as improving surface roughness and enhancing coating adhesion. It can also be used for surface processing of non-metallic materials such as stone and glass.

white alundum

Composition and characteristics: the content of alumina is not less than 99%, the hardness is higher than that of brown corundum, the toughness is slightly lower, and the color is white. Its particle shape is regular, its cutting power is strong, and its surface roughness can be uniform.

Scope of application: It is often used for surface treatment of metal products and precision parts with high surface quality requirements, such as aerospace parts, electronic components, molds, etc. It is also suitable for some surface treatment occasions that require color, such as white metal products or workpieces that need subsequent color coating treatment.

Silicon carbide abrasives

Black silicon carbide

Composition and characteristics: the main component is silicon carbide, the content is above 95%, and the color is black or dark blue. Hardness is higher than corundum abrasives, and it has good thermal and electrical conductivity, wear resistance and corrosion resistance.

Scope of application: Suitable for processing metal materials with high hardness, such as high carbon steel, alloy steel, cemented carbide, etc., as well as non-metallic materials such as stone and ceramics. Commonly used in surface roughening, deburring, cutting and grinding.

green silicon carbide

Composition and characteristics: the content of silicon carbide is above 99%, and the color is green. It has higher purity, slightly higher hardness than black silicon carbide, sharp particles and good cutting performance.

Scope of application: It is mainly used in the fields of precision machining, optical instrument manufacturing, semiconductor manufacturing, etc., and carries out high-precision grinding, polishing and grooving of cemented carbide, optical glass, ceramics, gems and other materials.

Glass bead abrasive

Ordinary glass beads

Composition and characteristics: Made of ordinary glass, it has the characteristics of moderate hardness, good roundness and smooth surface. In the process of sandblasting, the impact on the surface of the workpiece is small and uniform surface compressive stress can be produced.

Scope of application: It is often used for surface polishing, deburring and strengthening of metal parts, which can improve the surface smoothness and fatigue strength of parts. It can also be used for surface treatment of plastics, rubber and other materials without damaging the surface of the materials.

Strengthened glass beads

Composition and characteristics: Through special processing, its strength and wear resistance are higher than ordinary glass beads. It can make the surface of the workpiece produce more significant compressive stress during sandblasting, and improve the fatigue resistance and corrosion resistance of the workpiece.

Scope of application: It is widely used for strengthening metal parts in aerospace, automobile manufacturing and other fields, such as aircraft landing gear, engine blades, automobile springs, etc., which can effectively prolong the service life of parts.

Walnut shell abrasive

Composition and characteristics: processed from walnut shell, it has the characteristics of low hardness, good toughness and irregular particle shape. It has stable chemical properties, no harmful substances and no pollution to the environment.

Scope of application: It is suitable for some occasions with low requirements for surface hardness but high requirements for cleanliness and environmental protection, such as surface cleaning and degreasing of non-ferrous metal materials such as aluminum alloy and copper alloy, and surface treatment of equipment and containers in food, medicine and other industries.