Non-metallic angular grit white alumina 14# for surface treatment by grit blasting

White corundum grit for sandblasting is selected from fully smelted and crystallized white corundum fixed furnace charge, produced through processes such as crushing and screening. The particle size range of white corundum for sandblasting is strictly controlled to keep the abrasive grain size within a specific range. Sandblasting produces a uniform surface roughness. White corundum has good toughness, strong grinding ability, and excellent self-sharpening. When blasted onto the surface of the workpiece, it creates indentations through the impact force of the air stream. The passivated sandblasted surface is beneficial for the subsequent paint adhesion. White corundum sandblasting abrasives also offer the advantages of high sandblasting efficiency and high utilization rate.

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 on 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, it does not cause burning or oxidation on the sandblasted surface.

3. White corundum can also be directly used for grinding and polishing, surface treatment, sandblasting and rust removal, etc. It can be used for dry and wet sandblasting, surface roughening and polishing, surface treatment and passivation before spraying, etc.

4. White corundum alumina has high purity, with the main crystal phase being α-phase alumina. It has low impurities and low magnetic content. After sandblasting, it leaves no chemical residues, making it suitable for sandblasting mechanical components in the pharmaceutical, aviation, 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 by sandblasting of non-ferrous metals such as aluminum alloy and zinc alloy.

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

Sandblasting and atomization of colored inlaid glass and decorative glass.

Sandblasting passivation of dental dentures and pretreatment before bonding.

Surface treatment of materials such as ceramic tiles.

Sandblasting production line for kitchenware and cookware.

Surface treatment by sandblasting of wooden furniture and bamboo items.

Sandblasting and etching of stainless steel, alloy steel, and cast steel.

Surface cleaning by sandblasting of composite materials and plastic products.

Micro-sandblasting of 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.