The process of producing parts by pouring molten metal that has been melted at high temperature into a mold, and then cooling and solidifying it to obtain the desired shape and performance of the parts. The history of casting has been present in China for thousands of years, from the Bronze Age to the Industrial Revolution, and the mechanical industry cannot do without casting. Casting technology represents the level of a country's mechanical industry. The mechanical industry is as large as aircraft, high-speed train parts, ship machinery, engineering machinery, power equipment and other equipment manufacturing industries, and as small as pots and pans are all made using casting technology.
Casting products can be divided into two categories according to their materials: one is black metal castings such as gray cast iron, ductile iron, alloy cast iron, and cast steel; the other is non-ferrous metal castings such as cast copper alloys and cast aluminum alloys.
With the development of the mechanical industry, the performance of various casting alloys has been greatly improved, and the machining of castings is increasingly using high-speed cutting and dry cutting. The fastest developing tools for high-speed cutting and dry cutting are cubic boron nitride tools (CBN tools) and diamond tools (PCD cutting tools). As the "teeth" of industry, CBN and PCD cutting tools provide a basis for difficult-to-machine materials and high-speed cutting of castings.
Currently, developed countries have invested CBN tools and PCD cutting tools on a large scale, which is inseparable from the rapid development of high-speed CNC machine tools in the past 20 years, especially in the automobile industry. CBN tools and PCD cutting tools are used in high-speed cutting and dry cutting, and their excellent performance such as high hardness, high wear resistance, good thermal conductivity and low friction coefficient are particularly suitable for the application of the CNC automatic processing line in the automobile industry.
The automotive industry is the best application field for CBN tools and PCD cutting tools. In recent years, with the continuous development of China's automobile industry, the automotive industry has become an important pillar of the national economy. The use of CBN tools and PCD cutting tools with high-speed CNC machine tools can shorten the non-processing time by more than half, reduce non-processing time, increase the service life of machine tools, and improve processing efficiency.
Currently, CBN tools and PCD cutting tools are widely used in the processing of parts such as cylinder blocks, cylinder heads, vehicle axles, transmissions, and bearing covers. For axles, gears, and wear-resistant rings, CBN tools are very convenient for turning and replacing grinding, which is also a place where foreign countries do well.
We expect that according to the current market share of superhard materials of more than 10%, within five years, the market share of CBN tools and PCD cutting tools will reach nearly 4 billion yuan. This is a huge cake waiting to be developed for all superhard material tool companies.
CBN tools and PCD cutting tools represent the development direction of tool materials and are an ideal cutting tool material. This material replacing non-renewable and gradually depleting hard alloy tool materials is an inevitable trend. It is believed that through the unremitting efforts of domestic enterprises and research institutions in China, China's superhard material tool industry will have a better tomorrow, and CBN tools and PCD cutting tools will go further and stronger in cutting processing.
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