Casting process, in simple terms, is the high-temperature molten metal liquid poured into the mold, after cooling and solidification to obtain the desired shape and performance of the parts of the production process.
Casting history in China has existed for thousands of years, from the Bronze Age to the Industrial Revolution, mechanical industry are inseparable from the casting, casting technology represents the level of a country's mechanical industry, mechanical industry, from aircraft, high-speed train components, marine machinery, engineering machinery, power equipment and other equipment manufacturing, small to pots and pans are used in the casting process.
Casting molding workpiece from the material can be divided into two categories: a class of ferrous castings such as gray cast iron, ductile iron, alloy cast iron, and cast steel parts. One category is non-ferrous metal castings such as cast copper alloy, cast aluminum alloy.
With the development of the machinery 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, high-speed cutting and dry cutting tools are rapidly developing superhard tools (CBN tools and PCD tools), as the industry's "teeth", CBN and PCD tools for castings of difficult-to-machine materials and batch high-speed cutting provides the basis.
At present, foreign advanced countries have been put into large-scale use CBN tools and PCD tools, which is inseparable from the rapid development of foreign high-speed CNC machine tools in the past 20 years, especially in the automotive industry, CBN tools and PCD tools with its high hardness, high wear resistance, good thermal conductivity and low coefficient of friction and other excellent performance, widely used in CNC automatic processing line, while foreign CBN tools and PCD tools have accounted for a significant increase in the number of tools. tools and PCD tools have accounted for more than 30% of the tool market share.
Compared with foreign countries, domestic CBN tools and PCD tools are not well developed, this is due to the domestic tool enterprises manufacturing equipment and manufacturing technology level is not up to scratch, restricting the use and promotion of these tools, coupled with foreign CBN tools and PCD tools because of its expensive price reasons, so many users discouraged; at the same time, domestic enterprises and technical personnel of CBN tools and PCD tools Tool performance, processing mechanism and the use of technology can not fully understand and master, etc..
However, from the successful experience abroad, coupled with CBN tools and PCD tools in the field of machining, high-speed, high-precision, to turn instead of grinding, green manufacturing and other advantages, will be as high-speed CNC machine tools in China's development process, is the trend, unstoppable.
CBN tools and the advantages of the application in the automotive industry
The automotive industry is the field of CBN tools and PCD tools more applications, in recent years, with the continuous development of China's automotive industry, the automotive industry has become an important pillar of the national economy, CBN tools and PCD tools with the use of high-speed CNC machine tools, can shorten the non-machining time to more than half, but also to reduce the non-machining time, increase the service life of machine tools, improve processing efficiency.
At present, foreign CBN tools and PCD tools in the cylinder block, cylinder head, axle, gearbox, bearing caps and other parts of the processing of many applications. CBN tools for shafts, gears and wear rings, with turning is very convenient, to turn instead of grinding, but also foreign do a very good place.
CBN tools and PCD tools development trend
We expect that during the 12th Five-Year Plan, China's tool market share will reach almost 36 billion, according to the current market share of superhard materials accounted for more than 10% to calculate, within five years, CBN tools and PCD tools market share will reach nearly 4 billion, which is a huge piece of cake to be developed for all superhard material tool enterprises.
CBN tools and PCD tools represent the direction of tool material development, is a more ideal cutting tool material, this material to replace the non-renewable, and gradually scarce carbide material tools is an inevitable trend. I believe that through the unremitting efforts of domestic enterprises and research institutions, China's super-hard material cutting tool business will have a better tomorrow, CBN tools and PCD tools will go farther and stronger in cutting and processing.