Types of Artificial Abrasive Paper, Sanding Belt, and Emery Cloth Roll in the Carbide Series

Silicon carbide abrasive paper, sanding belt, and emery cloth roll

Silicon carbide is a man-made abrasive material made by smelting quartz, petroleum, and coke in a resistance furnace with water powder and salt as auxiliary materials in a certain proportion at high temperatures to make artificial abrasive paper, sanding belt, and emery cloth roll.

Silicon carbide abrasive paper, sanding belt, and emery cloth roll are divided into black and green: black silicon carbide is black or dark blue, and green silicon carbide is green or blue-green.

Silicon carbide does not react with any acid, but the melt of alkaline oxidants can cause its decomposition.

Compared with alumina-based artificial abrasive paper, sanding belt, and emery cloth roll, black silicon carbide has higher hardness and greater brittleness, suitable for processing metals and non-metallic materials with lower tensile strength, such as cast iron, brass, lead, and other non-ferrous metals, as well as hard and brittle materials such as ceramics and glass.

Green silicon carbide has slightly higher purity, hardness, and brittleness than black silicon carbide. Green silicon carbide abrasive paper, sanding belt, and emery cloth roll are suitable for processing hard and brittle materials such as hard alloys, glasses, agates, etc. They are also widely used in the precise grinding of measuring tools, cutting tools, molds, and the engine cylinders of airplanes, cars, and ships.

Cerium-doped silicon carbide abrasive paper, sanding belt, and emery cloth roll

Cerium-doped silicon carbide is smelted in a silicon carbide charge without adding salt, but adding a trace amount of cerium oxide (CeO2). Its appearance is similar to green silicon carbide, and its microhardness is 36.29 GPa. Compared with green silicon carbide, its microhardness, compressive strength, and toughness are higher.

Due to the changes in its physical properties, cerium-doped silicon carbide abrasive paper, sanding belt, and emery cloth roll also have some improvements in grinding effect.

When grinding cast iron with cerium-doped silicon carbide, its effect is more significant than that of green silicon carbide. When grinding hard alloys, its effect is similar to that of green silicon carbide. When grinding difficult-to-grind high-speed steels such as CO5Si M5Al 5F-6, its effect is similar to that of single crystal corundum.

Boron carbide abrasive paper, sanding belt, and emery cloth roll

Boron carbide (B4C) is made by using boric acid (H3BO3) and carbon material as raw materials, and then smelting at high temperatures of 1700~2300℃ in an arc furnace, in which carbon directly reduces the melted boron oxide (B2O3).

Boron carbide was once used to replace diamond in grinding hard alloy tools. Its sintered products, boron carbide abrasive paper, sanding belt, and emery cloth roll can replace diamond as a grinding wheel dressing tool, and are suitable for precision grinding of hard materials such as tungsten carbide, titanium carbide, sintered corundum, artificial gemstones, and special ceramics.

Carbon-silicon-boron abrasive paper, sanding belt, and emery cloth roll

Carbon-silicon-boron is made by smelting boric acid, quartz sand, and graphite in an arc furnace at high temperatures. It is gray-black, with a hardness lower than that of cubic boron nitride and higher than that of boron carbide. Carbon-silicon-boron abrasive paper, sanding belt, and emery cloth roll are suitable for processing hard materials such as hard alloys, semiconductors, artificial gemstones, and special ceramics.