1 Introduction
The hard material coated abrasives refers to the abrasive material, which is made of the abrasive or cubic boron nitride abrasive particles on the flexible flexible substrate..
At present, the industry of abrasive abrasive bonded abrasive, coated abrasives and hard abrasive material, including bonded abrasive tools and coated abrasives industry, has been developed into the industrial system of large scale, variety and complete range.. With the international market, the abrasive sales increased year by year, while the possession rate of the coated abrasives was increasing, and many products replaced the fixed abrasive tools. The United States in 2002 the output value of the abrasive is $3200000000, of which coated with abrasives (including hard coated abrasives Coated Abrasives) related products of $50%, accounting for 1600000000 share.
With the development of modern mechanical processing of continuous development and a variety of new materials, to the machining accuracy and surface roughness requirements more and more high, the corresponding grinding technology and tools, especially Coated Abrasives developed to more efficient, high life and ultra precision direction gradually. Therefore, the ultra hard material of coated abrasives in the development and use of quietly rising, in Coated Abrasives share increased year by year, in a niche in the machining of difficult to cut materials, automobile industry, electronic industry, glass processing, stone processing, stainless steel and hardened steel, etc. has been applied.
It is worth noting that, in recent years, China's automobile industry and machinery manufacturing industry to flourish, normally need to use a large number of super hard material coated abrasives, such as automobile manufacturing process of body processing and crankshaft, camshaft, a cardan shaft polishing need superhard material grinding tools, such as diamond abrasive paper and polyester film of wafer. However, the domestic joint venture enterprises are imported coated with abrasives, the main imported 3M company Coated Abrasives products. The fierce competition of the domestic automobile market, the sharp decrease in the profit of the products, will certainly be the application and market sales of the hard materials coated with domestic super hard materials to create vitality. Should believe that with its high performance, high life for the outstanding advantages of diamond abrasive belt and cubic boron nitride borax belt will become an important tool in the future of abrasive belt grinding machine.
2 development survey
The three main elements that are often involved in the manufacture of coated abrasives are the base material, abrasive and adhesive. Any of the three elements of the improvement, will make the coated abrasives product performance changes. The coated abrasives are now developing in the direction of special, precision and strength, while the high efficiency is mainly based on the high-speed, strength and heavy load..
2.1 substrate
The substrate is the bearing material of abrasive and binder, and is the basic material for grinding or polishing.. The substrate is mainly divided into 4 types: base paper, cloth, non-woven fabric and composite base.
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