An Overview on China's Abrasive Industry in the Past 40 Years

         Zhongsen Editor          2019-01-10
This topic, we take 1978 as the starting point, by combining several representative topics or things to show the abrasive industry in the reform and opening up 40 years of change. After the "Reform and Opening Up", more new things, new technology poured into the country, abrasive industry has also developed rapidly. We can see the development trajectory of abrasive industry the evolution of several kinds of abrasives. Coated Abrasives Coating abrasives are widely used in mechanical parts, wood, leather, glass, ceramics, stone, stainless steel sheet, hard materials processing, especially suitable for complex surface, large area of processing.   In the early period of reform and opening up, China coated abrasive industry has nearly 30 years of development and accumulation, in the abrasive intelligence network registered factory has more than 70, the output reached 23.2 million square meters, the output value of nearly 70 million RMB. In the the late 1980s and early 90, China coated abrasives set off the first introduction of the climax, the introduction of modern coated abrasive production line is undoubtedly one of the most important technical progress of Chinese coated abrasives, it marks the Chinese coating abrasive production equipment to the modernization, gave rise to the replacement of Chinese coated abrasives.   It has pioneered the development of high-grade coated abrasives in China. With the birth and development of water-soluble phenolic resin for coated abrasives, the whole resin Sandcloth replaces the animal glue sand cloth and becomes the protagonist of the coated abrasive.   Full resin, semi-resin, water-resistant belt, sand plate, steel paper sand plate, sand wheel, sand sheet, sand sleeve and other high-end coated abrasives One by one was born, and developed rapidly.   The manual use of coated abrasives to the mechanized use of progress, sand belt, sand plate, steel paper sand plate, such as mechanized grinding applications gradually replace the sand page of manual polishing and polishing. By 2000, the total output value of China's coated abrasive industry reached 577 million RMB, and the output reached 110 million square meters. Entering the 21st century, ceramic abrasive, ultra-coating technology has further development and innovation, coupled with zirconium corundum abrasive, composite abrasive, ceramic abrasive, superhard materials and other materials continuous improvement and application, there have been some new development directions, such as electrolytic composite belt grinding, ultrasonic belt grinding and electroplating diamond metal belt grinding. Along with the rapid development of China's economy, coated abrasive varieties to high efficiency, life and ultra-precision direction of development. Not only the belt, sand plate, sand wheel, sand sheet, sand sleeve and other rapid development, but also appeared a lot of a variety of new varieties, such as: fiber built-in abrasive non-woven polishing wheel, nylon wheel, sand rib or sand rib wheel, foam flexible grinding block. As a result of the use of new materials, new technology coating abrasive products continue to emerge, the substrate not only has paper, cotton, but also the use of polyester cloth, non-woven and polyester film; abrasives not only have traditional corundum, silicon carbide, but also calcined abrasives, stacked abrasives, zirconium corundum, ceramic abrasives, superhard materials and so on. Domestic coating abrasives are breaking through the original traditional market, to the special, high-end field expansion, the main representative products are: Superhard material belt, polyester film coated abrasives, ceramic abrasive coated abrasives, grinding titanium alloy stacked abrasive belt, grinding carbon steel metal plate drawing belt, grinding printed circuit board belt, hundred sheet zirconium corundum sand cloth, Polyester cloth ultra-wide belt, anti-curl dry and wet sandpaper, non-woven products, non-woven stainless steel drawing products, velvet integrated sand cloth, dust-free abrasive sandpaper and so on, its product quality is approaching or has reached the level of similar products abroad. The Development Silicon Carbide Black Silicon Carbide The mass production of black silicon carbide in China began in the 80 's.Because the export volume is increasing year by year, the profit is quite high, attracts a large number of enterprises to put into production. In the early 90, the green, Northwest China set off a wave of climax in the production of black silicon carbide with Ningxia anthracite. After entering the 21st century, the technology of silicon carbide smelting is becoming more and more mature, at the same time, the use of black silicon carbide is further developed home and abroad, and the quality requirements have been improved. By 2004, China's black silicon carbide production capacity has exceeded million tons. Green Silicon Carbide As abrasive, in China's silicon carbide production field in the first 20 or 30 years has been the protagonist, and later due to export and silicon carbide non-grinding use of the development, production relative to black silicon carbide, gradually relegated to the secondary position.However, its total production has always been steadily rising, especially in the late 90, the international use of green silicon carbide micro-powder cutting wafer technology applications, China's green silicon carbide production and export volume also increased. With the advent of the new century, ushered in the promotion of low-carbon emissions, the use of clean energy era, coupled with the rise of China's photovoltaic industry, China's green silicon carbide production quickly set off a climax of development.   Since then, to 12500KVA electric furnace refining green silicon carbide manufacturers more and more, with anthracite refining black silicon carbide mainly Qinghai and Gansu to the southwest, such as Panzhihua and other places also began to appear in the production of green silicon carbide craze.   In the 2014, China has more than 200 silicon carbide smelting enterprises with an annual production capacity of more than 2.2 million tons, including 1.2 million tons of green silicon carbide and about 1 million tons of black silicon carbide. 2017, the production of black silicon carbide major producing areas: Gansu 400,000 tons or so, Ningxia about 340,000 tons, Qinghai 30,000 tons, about 25,000 tons in Inner Mongolia, Hubei 15,000 tons or so, Heilongjiang about 17,000 tons, Sichuan 15,000 tons or so; production of green silicon carbide major producing areas: Xinjiang about 45,000 tons, Qinghai is about 35,000 tons. Summary:After the reform and opening up, China has emerged a large number of private abrasive manufacturing enterprises, there is no shortage of outstanding enterprises to promote the development of the industry and technological progress, they through continuous efforts, development and growth at the same time, but also for the progress of the entire industry to contribute to the strength.