Aluminum Oxide Grit 12#/European Standard F12 for Sandblasting Large Ships Before Painting

      White corundum sand for sandblasting is produced from fully smelted and crystallized white corundum fixed furnace material through processes such as crushing and screening. The particle size range of white corundum for sandblasting is strictly controlled to ensure the abrasive grains are within a specific range. This results in a consistent surface roughness after sandblasting. White corundum has good toughness, strong grinding ability, and excellent self-sharpening properties. When blasted onto the surface of workpieces, it creates indentations through the impact force of the airflow. The passivated sandblasted surface enhances the adhesion of subsequent paint applications. White corundum abrasive grains also offer high sandblasting efficiency and high utilization rates.

WFA Abrasive blasting media is made of 99% aluminum oxide powder as raw material, which is refined and crystallized by electric melting (thus white corundum is also called fused alumina and white fused alumina). The white corundum sand produced by our factory has high purity, low impurities, low sodium content, uniform particles and high whiteness.

Chemical Composition of White Corundum (Typical Indicators):

Physical Properties of White Corundum Abrasive:

Product Models of White Corundum:

Main Performance Characteristics of White Corundum:

1. White corundum has a microhardness of 20.58 GPa, Vickers hardness of 2200-2400 kg/mm², and Mohs hardness of 9.0. It can be used for sandblasting most metals, cast steel, cast iron, non-ferrous metal alloys, chromium/manganese/tungsten/molybdenum-containing metals, glass, and other non-metallic materials.

2. White corundum has strong grinding ability and high sandblasting efficiency. Due to its excellent self-sharpening properties, it does not cause burning or oxidation on the sandblasted surface.

3. White corundum can also be directly used for grinding, polishing, surface treatment, sandblasting for rust removal, and other applications. It is suitable for dry and wet sandblasting, surface texturing and polishing, and surface treatment and passivation before coating.

4. White corundum has high purity of aluminum oxide, with the main crystalline phase being α-phase aluminum oxide. It has low impurities and low magnetic content, leaving no chemical residues after sandblasting. It can be used for sandblasting mechanical components in the medical, aerospace, and food industries.

Characteristics of white fused corundum:

1. Because the white fused alumina has good self-sharpening, strong toughness, strong grinding ability, hardness higher than brown corundum, and low heat generation, it can not only be used as a raw material for abrasive tools such as cutting discs and grinding wheels.

2. White fused corundum can also be directly used in grinding and polishing, surface treatment, sandblasting and rust removal, and can be used in dry and wet sandblasting, surface polishing and polishing, and surface treatment before spraying.

3. Fused alumina sand has strong wear resistance, so it is suitable as an additive material for wear-resistant products.

4. White fused corundum has high refractory temperature, acid and alkali corrosion resistance, and good thermal performance. It can be used as high temperature resistant materials such as casting surface sand, thermally conductive ceramics, and high temperature resistant glue. It is widely used in casting, steel refractory, chemical refractory, 95 batteries, decorative porcelain and other special ceramics and porcelain for daily life, as well as high-tech industries such as semiconductors and electronics.

Applications:

Passivation of non-ferrous metals such as aluminum alloy and zinc alloy through sandblasting.

Surface treatment of metal parts including sandblasting, rust removal, and preparation for spraying.

Frosting and atomization of stained glass and decorative glass.

Sandblasting and passivation of dental prostheses, pretreatment for bonding.

Surface treatment of materials like ceramic tiles.

Sandblasting production lines for kitchenware and cookware.

Surface treatment of wooden furniture and bamboo products through sandblasting.

Etching of stainless steel, alloy steel, and cast steel via sandblasting.

Surface cleaning of composite materials and plastic products through sandblasting.

Micro-sandblasting for semiconductors and semiconductor packaging equipment.

Applications of WFA Abrasive blasting media:

1. Metal sandblasting surface treatment:

Removing the oxide layer of metal, stainless steel, aluminum alloy, tungsten molybdenum, copper products and other materials. Abrasive sandblasting to remove rust. White aluminum oxide grain has strong grinding ability and high efficiency. It can be recycled and will not leave residues on the surface of the workpiece. White aluminum oxide grain does not contain iron, sulfur, chlorine and other elements. It can be used in dentistry, food, medical equipment, aerospace and other fields :

i. -Surface treatment before spraying for spraying, painting, supersonic thermal spraying, etc., to increase the unevenness of the surface of the material and enhance the holding power of the sprayed material. B-Prepare the surface treatment before painting the back panels of mobile phones and laptops.

ii.-Surface treatment before metal spray welding and titanium plating, such as sandblasting on the surface before brazing of super-hard grinding wheel and cemented carbide.

2. Surface treatment of glass and non-metallic materials:

i. Colored glass, glass products, ceramic products, bamboo chips, wood products, composite non-metallic materials and other materials such as sandblasting, matting, polishing, matte treatment, etc. Rubber materials such as printing rubber rollers, rubber molds, PU materials, acrylic sheets, plastics and other materials are surface-etched.

3. Semiconductor industry: White aluminum oxide used for surface treatment of aluminum alloy semiconductor components, surface treatment and sandblasting before vacuum sputtering; removal of impurities on the back of wafers.

4. Mold processing industry: White aluminum oxide blasting media for surface treatment of metal molds, forged steel molds, forged aluminum molds, mold steel, carbon steel, and mold processing industries such as matte surface treatment after mold biting. For example, wire cutting molds, glass molds, tire molds, conductive rubber molds, shoe molds, bakelite molds, electroplating molds, button molds, plastic product molds and other molds all use alumina sand.

5.Skin cleaning:Microdermabrasion Crystals white aluminum oxide could improve scars,blackheads,pore size. It makes skin smooth and clean without any contaminant.