Abrasive: Alumina is used as the abrasive. Alumina has the characteristics of high hardness, good wear resistance, and strong cutting ability, which can effectively grind and polish various materials, suitable for a variety of materials such as metals, woods, and plastics.
Backing Base: It is usually made of Grade C imported latex paper base, polyester film, or sponge film, etc. The paper base has a certain degree of flexibility and strength, ensuring that the sandpaper is not easy to be damaged during use. The film base has good flatness, and the abrasive grains can be bonded more closely to the film, making it less likely for the abrasive grains to fall off. Moreover, the base is not easy to be broken even under high-intensity grinding.
Backed Flock: A layer of flocked cloth is planted on the back of the sandpaper. The function of the backed flock is to facilitate the adhesion to the adhesive disc of the grinding equipment, making the installation and disassembly of the sandpaper more convenient. At the same time, it can ensure that the sandpaper is firmly matched with the grinding machine during use and is not prone to displacement.
Holes: There are small holes distributed on the surface of the sandpaper. Common numbers of holes include 8 holes, 9 holes, 17 holes, etc. Different sizes and numbers of holes are designed to meet different grinding requirements and equipment. These small holes can play the roles of heat dissipation and chip removal during the grinding process, prevent the abrasive debris from blocking the sandpaper, extend the service life of the sandpaper, improve the grinding efficiency, and also reduce the dust flying, improving the working environment.
Product Specifications
Size: There are various sizes available. Common disc sandpapers include 5 inches, 6 inches, 7 inches, 9 inches, etc., corresponding to diameters of 125mm, 150mm, 180mm, 225mm, etc. respectively. In addition, there are rectangular sandpapers, such as 112mm×220mm, etc.
Grit: The grit range is relatively wide. Common grits include P40, P60, P80, P100, P120, P180, P240, P320, P400, P600, P800, etc. The smaller the number, the coarser the particles, and the stronger the ability to remove materials. The larger the number, the finer the particles, and the higher the surface finish after grinding.
Performance Advantages
Strong Grinding Force: High-quality alumina abrasive and the high-temperature-resistant electrostatic sand-planting process make the abrasive grains of the sandpaper evenly distributed and sharp, which can quickly and effectively remove burrs, oxide scales, old paint layers, etc. on the surface of the workpiece, improving the grinding efficiency.
Good Wear Resistance: Alumina abrasive itself has high hardness and wear resistance. Coupled with the reinforcement of the backing base material and the protection of the anti-blocking coating, the sandpaper is not easy to be worn during a long-time grinding process, and has a long service life.
Good Grinding Effect: The sand planting is uniform, and all the abrasive grains face outward with sharp tips, which are sharp for cutting. It can ensure that the surface after grinding is smooth and flat, without leaving uneven sand marks. At the same time, the anti-blocking coating can effectively remove the dust, avoid the blockage of the abrasive grains, and thus provide a more uniform surface treatment effect.
Convenient to Use: The backed flock design makes the installation and disassembly of the sandpaper and the grinding equipment very convenient. The sandpaper can be quickly switched, saving working time. Moreover, the sandpaper has good flexibility and can adapt to the grinding of workpieces with different shapes and curved surfaces.
Application Scope
Automotive Industry: It can be used for the grinding of automotive parts, the renovation of automotive wheels, the grinding and polishing of automotive paint surfaces, etc. It can remove surface scratches, rust, and old paint, preparing for repainting or glazing.
Hardware Industry: It is suitable for the grinding of hardware accessories, the removal of welding spots, etc., making the surface of hardware products smoother and improving product quality and appearance.
Furniture Industry: It is used for the grinding of wood surfaces of furniture, the grinding and polishing of primer coats, etc. It can make the wood surface smooth and delicate, enhance the adhesion of the paint, and improve the texture and aesthetic appearance of the furniture.
Other Fields: It can also be applied to industries such as the grinding of plastic parts, the rust removal of metal products, shipbuilding, machining, architectural decoration, etc., for grinding, polishing, and finishing of various materials.
Usage Method
Select the appropriate sandpaper: According to the material of the workpiece, the grinding requirements, and the surface condition, select the perforated alumina backed flock sandpaper with the appropriate grit and size. For example, coarse-grit sandpaper is suitable for quickly removing a large amount of material or grinding uneven surfaces; fine-grit sandpaper is used for fine grinding and polishing.
Install the sandpaper: Tightly bond the sandpaper to the adhesive disc of the grinding equipment through the backed flock to ensure that the sandpaper is firmly installed and avoid loosening or falling off during use.
Perform grinding: During grinding, maintain an appropriate angle and pressure between the grinding equipment and the surface of the workpiece, and move the grinding equipment evenly to ensure that the sandpaper can fully contact the surface of the workpiece for grinding. For workpieces with different shapes and parts, different grinding methods can be adopted, such as linear grinding, circular grinding, or arc grinding, etc.
Replace the sandpaper regularly: As the usage time increases, the abrasive grains of the sandpaper will gradually wear out, and the grinding effect will decrease. When it is found that the grinding force of the sandpaper is significantly weakened, the surface is blocked, or the abrasive grains fall off, etc., a new sandpaper should be replaced in a timely manner to ensure the grinding quality and efficiency.
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