Take You To Know Common Artificial Abrasives Such As Brown Corundum Powder

Most abrasives are artificial abrasives made of abrasives and binders. There are also natural abrasives made directly from natural minerals and rocks. After the appearance of brown corundum powder, abrasive tools made of various artificial abrasives have emerged one after another, creating conditions for the rapid development of grinding and grinding machines. Since then, the proportion of natural abrasive tools in abrasive tools has gradually decreased. Today we will learn about common artificial abrasives such as brown corundum powder.
Brown corundum micro-powder products are suitable for deburring, chamfering, descaling and surface polishing of machinery, electronics, metal parts, hardware, tools, auto parts, instruments and meters, casting, medical treatment, craft accessories and other industrial products, with high grinding efficiency, wear resistance and durability, not easy to block holes, and high surface brightness!
The physical properties of the brown corundum powder determine the quality of the abrasive. The particle size, hardness and strength of the abrasive are its important indicators. The abrasive particle size refers to the particle size of the abrasive. Abrasives can be divided into abrasive, abrasive, micro-powder and ultra-micro-powder according to their grain size. The grain size number of abrasive and abrasive powder is expressed by the number of meshes per inch of screen length, and the mark is a "#" sign added to the upper right corner of the grain size number. For example, 240 # means 240 holes per inch of screen length. The larger the particle size, the finer the abrasive particles. The particle size number of micro-powder and ultra-micro-powder is expressed by the actual particle size, and a letter "W" is added before the particle size number to mark it, sometimes it can also be converted into mesh number.
The particle size of various brown corundum micro-powders can be divided into coarse, medium and fine. The medium particle size is the basic particle size in the abrasive powder, which is the main factor determining the abrasive grinding ability, and accounts for a large proportion in the particle size composition. Practice has proved that the grinding capacity of the grinding powder after centrifugal separation is 20% higher than that before separation. Fine particles play a very small role in grinding. Their particle size is not only detrimental to the quality of the grinding workpiece, but also reduces the grinding efficiency. Therefore, the number of particles in the particle size composition should be reduced as much as possible. Therefore, from the point of grinding efficiency and work quality, it is required that the abrasive particles be uniform. In the abrasive group with grain size of 12 #~80 #, the grain size is relatively large and is not suitable for grinding.
The hardness of brown corundum micro-powder refers to the ability of the abrasive surface to resist the action of local external forces, while the hardness of abrasive refers to the firmness of the adhesive bonded abrasive under the action of external forces, which is one of the basic characteristics of abrasive. Grinding is realized by using the hardness difference between abrasive and workpiece. The higher the hardness of abrasive, the stronger its cutting ability. Abrasive strength refers to the firmness of the abrasive itself, that is, the ability to withstand external pressure without breaking when the grinding edge is still quite sharp. Abrasives with poor strength have fast abrasive crushing, low cutting ability and short service life. This requires that the brown corundum powder should have sufficient strength in addition to high hardness, so as to better grind.