Metal grinding material sponge sandpaper is the main tool used for grinding and polishing by abrasives bonded to flexible materials such as paper and cloth. Sponge sandpaper is divided into paper tape base and cloth paper tape base: paper tape The base is relatively hard and can grind out a high-gloss surface. Paper-based sponge sandpaper is used in both fine and superfinishing. Cloth tape base is stronger than paper tape base, and is less sensitive to temperature and humidity than paper tape base, and will not lose stability due to increased temperature and humidity. Cloth sponge sandpaper is more durable than paper sponge sandpaper much taller. Abrasives commonly used in furniture production are alumina, silicon carbide, zirconia aluminum, garnet, and glass sand is used as abrasive for manual sandpaper.
The characteristics of sponge sandpaper for metal grinding materials: rough grinding, large plasticity, large grinding area, coarse grain size to avoid embedded chips, soft workpiece, etc.; fine grain size for fine grinding, hard workpiece, etc. The metal grinding material is bonded to the tape base by an adhesive. The adhesive should have strength, elasticity, heat resistance, water resistance, etc.
Waterproof abrasive paper is mainly used for grinding and polishing of automobiles, furniture, leather, home appliance shells and mechanical parts. Waterproof sandpaper has a small gap between the sand grains, and the fines produced by grinding are also small. When used with water, the fines will flow out with the water, so it should be used with water. If you use water sandpaper for dry grinding, the fines will It will stay in the gaps between the sand grains, making the surface of the sandpaper dull so that it cannot achieve its original effect, but dry sandpaper is not so troublesome, the gap between its sand grains is larger, and the fines produced by grinding are also larger during the grinding process, the powder will fall due to the large gap, so it does not need to be used with water.
The characteristics of waterproof sandpaper: the grinding efficiency is increased by 30-50%, the service life is long, the grinding produces less heat, the strength is high, the tear resistance is good, the anti-clogging effect is good, and the sandpaper is prevented from fading and affecting the surface quality of the workpiece.
