Compressors play an important role in economic development and will drive the advancement of important industries such as steel and chemical industry, mining and metallurgy, electronic power, military and aerospace. With the rapid development of the air compressor industry, the demand for air compressors is gradually increasing. It also led to the development of compressor machining tool companies, which enhance their competitiveness by improving tool quality and reducing costs. The development of CNC machining technology enables the manufacture of scroll compressors and enters the market. With productivity and With increasing production, these compressors are more competitive. They are more advantageous than piston compressors in refrigeration, air conditioning and heat pump applications. The crankcase and cylinder block are a one-piece casting, in the form of a sector, the crankshaft of the compressor. Casting integrally with ductile iron, the angle between the two turns is 180°, supported by two plain bearings. Due to the large amount of air compressor compressor crankshaft, a large number of tools are required in machining, if the tool is not durable and cannot be solved Porosity, the difficulty of sand clamping, will reduce production efficiency, therefore, it is more wear-resistant
In the early 2002, Zhengzhou Bote Hard Materials Co., Ltd. developed and produced the integrated sintered cubic boron nitride tool to rough the cast iron compressor crankshaft, cylinder, bearing and other components, and successfully applied to refrigeration compressors. , Automotive compressors, mechanical processing of oil-free compressors in subways. Due to the use of non-metallic bond sintering, the blade life is reduced and the problem of chipping and burning of the knife is avoided. BN-S150 grade is China. The general polycrystalline cubic boron nitride grade is also used for a long time, and its cutting performance is not perfect. With the efforts of Bot's R&D team.
BT2800/BT7600 and other grades CBN inserts are successively used as indexable CNC inserts, used in batches for chilled cast iron rolls with hardness above HT300, hardened steel rolls with hardness above HRC55, GCr15 bearing steel, high manganese steel, high chromium steel , High-chromium and high-nickel alloy roughing and high-speed finishing, using the process of 'car grinding or milling grinding' greatly improves the processing efficiency. Compared with coated carbide inserts, CBN inserts It can realize high-speed cutting, rough cutting speed can reach 200~400m/min, finishing 300-800m/min; and it is suitable for high-speed cutting at 800-1500m/min line speed in machining center, improving machining efficiency by 3 times. And one by one to solve the pores on the cylinder of cast iron compressor, loose, sand and other casting defects for processing difficulties.
In recent years, China's compressor CNC machining tool companies have intensified their innovation in technology, products, and talents, further narrowing the gap with foreign countries and expanding the application range of superhard tools. The basis for further localization of compressor tools in China.