Abrasive: Brown fused alumina is refined at a high temperature of over 2,250°C in an electric arc furnace with bauxite and coke as the main raw materials. Its main chemical component is Al₂O₃, usually with a content of 95.00%-97.00%, and it also contains a small amount of iron, silicon, titanium, etc. It has the characteristics of high hardness, good toughness, good self-sharpening property, and strong grinding force.
Substrate: Vulcanized fiber is used as the substrate. This material has a certain strength and toughness, which can withstand the pressure and friction generated during the grinding process and provide stable support for the abrasive.
Adhesive: Generally, synthetic resin adhesive is used to firmly bond the brown fused alumina abrasive to the vulcanized fiber substrate, ensuring that the abrasive grains do not easily fall off during the use of the grinding disc. At the same time, it guarantees the good integrity and wear resistance of the grinding disc.
Product Specifications
Grit: Common grits include 60#, 80#, 100#, 120#, 150#, 180#, 220#, 240#, 320#, etc. Different grits are suitable for different processing stages and surface precision requirements. Coarse grits are used for quickly removing materials and rough machining, while fine grits are used for semi-finishing and finishing.
Size: The outer diameter specifications include 100mm, 115mm, 125mm, 150mm, 180mm, etc., and the inner holes have shapes such as round holes, cross holes, and rice-shaped holes. Common inner diameter sizes are 16mm, 22mm, etc.
Performance Advantages
High Hardness and Wear Resistance: Due to the high hardness of brown fused alumina itself, the grinding disc has excellent grinding performance, can effectively cut various metal materials, and is not easy to wear during the grinding process, with a long service life.
Good Self-sharpening Property: During grinding, the brown fused alumina abrasive grains will continuously break and generate new sharp cutting edges, maintaining the grinding ability of the grinding disc, improving the grinding efficiency, reducing the grinding force and grinding heat, and being beneficial to improving the surface quality of the ground workpiece.
Strong Adaptability: It is suitable for grinding a variety of metal materials, such as carbon steel, alloy steel, stainless steel, etc., and can also be used for the processing of some non-metallic materials, with a relatively wide application range.
Application Scope
Metal Processing: It can be used for rough machining of metal products, such as paint removal, rust removal, deburring, and weld grinding. It can also be used for the grinding and polishing of metal surfaces to improve the surface finish and precision, and is widely applied in industries such as machinery manufacturing, automobile manufacturing, shipbuilding, and aerospace.
Hardware Product Processing: It is used for the grinding and polishing of hardware products such as cutting tools, tools, and molds, enabling them to meet the requirements of good surface quality and precision, and improving the performance and service life of the products.
Usage Precautions
Storage Conditions: It should be stored in a dry and ventilated environment, avoiding moisture and direct sunlight to prevent the deformation of the vulcanized fiber substrate and the rusting of the abrasive grains, which may affect the performance and service life of the grinding disc.
Installation Requirements: When installing, ensure that the grinding disc is correctly installed on the grinding equipment and the tension is appropriate. Excessive tightness or looseness may cause problems such as deviation or cracking of the grinding disc during use.
Select Appropriate Grinding Parameters: According to the workpiece material, hardness, and processing requirements, reasonably select grinding parameters such as grinding speed, feed rate, and grinding pressure to avoid excessive wear of the grinding disc, poor surface quality of the workpiece, or safety accidents caused by improper parameter selection.
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