Super hard abrasives, the main varieties are diamond honing, diamond roller, PCD and PCBN tools. The honing strip is mainly used for boring of cylinder bores, crankshaft holes, connecting rod holes and other parts; the roller is used for sand wheel profile correction; PCD and PCBN cutters are used for cylinder block, cylinder head finish, and fine milling. Such abrasives account for 11.4% of the total number of abrasives. At present, almost all imported products are used, and the localization rate is very low.

A wide range of polishing abrasive products

In comparison, the car industry is increasingly sophisticated, efficient and highly automated, and CNC machine tools, machining centers, flexible manufacturing units and systems are becoming more and more popular, and the requirements for abrasive tools and tools are increasing. high. Diamond and CBN; superhard material abrasives and tools have low wear and high wear resistance, no need for frequent correction, and can improve the surface quality of the workpiece, so that the surface is free from cracks, burns, and high finish, which will surely get more and more A wide range of applications. At present, developed countries have widely used PCD and PCBN tools, diamond honing bars and other products in the processing of automotive parts.

In addition, diamond wheels can also be used in the processing of glass plastics. The development of plastics also provides a wide range of applications for diamond applications. Because plastics and ceramics are developing rapidly in order to meet the needs of the development of new technologies in the 21st century, especially in the electronics industry and the aviation industry, the use of plastics is increasing. In the automobile manufacturing industry, one of the main application fields of diamond grinding wheels, the weight of American automobiles is reduced due to the replacement of metal by plastics, and the weight of steel used therein is decreasing. The weight of plastics is increasing, and the processing of plastics is inseparable from diamond grinding wheels.

China's first bulletproof red flag car - Hongqi CA72 high-class sedan

Modern automobile production line

It is understood that during the 11th Five-Year Plan period, China's automobile industry has made great achievements: 5 enterprises with a scale of 1 million vehicles and 9 motorcycle manufacturers with more than one million vehicles. The automobile industry has undertaken the rapid development of the beginning of this century, and the scale of production and sales has increased rapidly year by year. In 2009, China's automobile production and sales both jumped to the 10 million mark. In 2010, it continued to maintain rapid growth, with both production and sales exceeding 18 million.

Table China's automobile production as a share of world production

During the 12th Five-Year Plan period, China will vigorously develop the automobile industry. The State Opinions on Promoting the Sustainable and Healthy Development of China's Automobile Products Export clearly stated that by 2015, exports of automobiles and parts and components will reach 85 billion US dollars, with an average annual growth rate of about 20%; by 2020, exports will account for the world's automobile products trade. A total of 10% of the strategic goals. Therefore, the discovery potential of superhard products in this field is advantageous.

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