Factory Direct Sales 40 Grit Angle Grinding Disc / Concrete Grinder Wheel

abrasive disc grinding wheels flap disc

Angle grinding disc is a high speed grinding tool with resin as binder and glass fiber mesh as reinforcement. It has high impact strength, high grinding rate, easy to use and safe. The maximum use speed can reach 80m/ s, installed in various grinding machines for free grinding, easy to use.

Characteristics of angle grinding disc

1. Abrasive Material Diversity
   Angle grinding discs are available with different abrasive materials. For instance, aluminum oxide discs are common and offer good durability and cutting performance for general - purpose applications. Zirconia - alumina discs have higher strength and heat resistance, making them suitable for heavy - duty grinding tasks. Silicon carbide discs are excellent for grinding hard and brittle materials like ceramics and stone due to their sharp - cutting nature.
2. High - Quality Bonding
   The abrasive grains in angle grinding discs are firmly bonded using advanced bonding agents. Resin - bonded discs are popular as the resin provides good flexibility and shock resistance during operation. This ensures that the abrasive grains remain in place even under high - speed rotation and heavy - pressure grinding, prolonging the life of the disc.

Application of Angle grinding disc

1. Metalworking Applications
   • In the metal fabrication industry, angle grinding discs are used for cutting metal sheets, rods, and pipes. They can make straight cuts or beveled edges with precision. For example, in the construction of metal structures like bridges or industrial machinery frames, these discs are used to cut and shape the metal components.
   • For surface preparation in metalworking, they are used to remove rust, scale, and paint from metal surfaces. After welding, angle grinding discs can smooth weld seams and remove any slag or irregularities, preparing the surface for further processing such as painting or coating.
2. Construction and Building Industry
   • In masonry work, angle grinding discs are used to cut and shape bricks, concrete blocks, and tiles. When installing tiles on a bathroom or kitchen floor, the discs can be used to make accurate cuts around corners or to fit tiles around fixtures.
   • For concrete work, they can be used to cut through concrete slabs during demolition or renovation projects. In addition, they are used to grind and smooth concrete surfaces, for example, to create a level surface for a new floor installation.

Features of Angle Grinder Disc

Physical Structure and Dimensions

Diameter and Thickness

Angle grinder discs come in various diameters, typically ranging from 100mm to 230mm. Smaller - diameter discs (e.g., 100mm) are more suitable for detailed work or in confined spaces, while larger ones (e.g., 180mm or 230mm) are used for more extensive cutting or grinding tasks. The thickness also varies, with cutting discs usually being thinner (around 1 - 3mm) to minimize cutting resistance and grinding discs being thicker (about 4 - 6mm) to handle the pressure of grinding operations.

Hole Size

The center hole of the disc is designed to fit the spindle of the angle grinder. Common hole sizes are 16mm or 22mm. The correct fit between the disc's hole and the grinder's spindle is crucial for stable operation and safety.

Abrasive Material Characteristics

Hardness and Toughness

Different abrasive materials in angle grinder discs provide a range of hardness and toughness. For example, aluminum oxide discs have good overall hardness and toughness. Brown alumina is tough enough to withstand the rigors of grinding various steel alloys, while white alumina offers higher hardness for materials like quenched steel. Silicon carbide discs have extremely high hardness, making them excellent for cutting and grinding hard non - metallic substances such as ceramics and glass. Zirconia alumina discs combine the hardness of alumina with the added toughness from zirconium, enabling them to handle tough - to - grind metals like stainless steel.

Self - Sharpening Property

Many quality angle grinder discs have a self - sharpening characteristic. As the abrasive particles wear down during use, they break away in a way that exposes new, sharp edges. This self - sharpening property allows the disc to maintain its cutting and grinding efficiency over an extended period. For instance, during the grinding of a metal surface, the disc continuously presents fresh abrasive surfaces, reducing the need for frequent replacements.