The common points of superhard materials and cemented carbide tools (tools, drills, and drills) belong to the category of hard materials. The development of cemented carbide in China has a history of more than 80 years, while superhard material has only 46 years of development history. It is relatively young and is a sunrise industry with great development space and potential. China's synthetic diamonds from scratch, from small to large, has now become a diamond production country, the annual output of nearly 5 billion carats, according to statistics about 1.4 billion carats of exports. China's unique six-faced synthetic diamond production equipment and process technology have accumulated a wealth of production experience, and laid the foundation for sustainable development to catch up with the world advanced level. Although China is a big country producing diamonds, it is not a strong country. The products are mainly in medium and low grades. The high-end products are scattered and dispersed. The quality of diamonds is mainly characterized by irregular crystal shapes, defects in crystals such as cracks, impurities, bubbles, and inconsistent grain size. In recent years, due to the improvement of innovation ability and technological level. With the expansion of synthetic diamond presses and synthetic chambers, product quality has increased and production has increased dramatically. For example, a Φ650mm press, cavity Φ50~51, diamond production 180~190 carats, Φ1000mm press, cavity Φ70mm yield 530 carats. What is gratifying is the large press machine, which produces large diamonds with a high proportion of coarse particles. At present, the development of diamond tools in China lags behind the development of diamonds. There are still gaps in the scope of application and variety of tools compared with foreign countries. Such as the composite film (PDC) can produce Φ120mm abroad, but China can only produce Φ50mm, heat resistance and wear resistance is not high, in recent years, due to the great development of the automobile and aircraft manufacturing industry, a large number of applications of lightweight materials (A1 - Si, Al-Mg alloy, composites, etc. The application of super-hard material cutters has also increased substantially, especially for functional materials such as thin-cutting tools for cutting semiconductor monocrystalline silicon. However, in China, some of the grinding wheels are imported, and there are still superfinishing diamond tool processing applications. Catch up. Increasing the investment in science and technology, improving the ability for independent innovation, adjusting the product structure, and striving to develop new products and tools have become the top priority. Cemented carbide is widely used as a high-efficiency tool and structural material and has a rapid development speed. According to reports, the total output of cemented carbide exceeds 16,000 tons, accounting for more than 30% of the world total. China is a big producer of cemented carbide, but it is not yet a powerful country. Especially in recent years, the development of mines in China, the construction of expressways and railways, the construction of water conservancy, electric power, and bridges, and the rapid development of the construction industry. Lead to a substantial increase in the demand for mine hard alloy materials. Despite the impact of the world financial crisis on China, the country has adopted a series of measures to expand domestic demand and ensure growth, increase the amount of 4 trillion yuan in funds to develop infrastructure, transport, water power, electricity, energy and other urbanization. The development of quality alloy tools (tool drills, drills) offers good opportunities. After more than half a century of development, China’s cemented carbide drills and drilling tools have made considerable progress in terms of output, variety, specifications, and quality. However, compared with international drills and drills, there are still many problems such as fewer varieties, poor quality stability, and short service life. There is still a certain gap between the use performance of products. The main reason is that the level of process technology is low, as well as the processing and processing of raw materials. As we all know, hard alloy materials used in the production of drills and brazing tools are inherently hard and tough. Concerning high-performance toughness, it is necessary to sacrifice hardness. In order to obtain high-hardness products, we must sacrifice toughness. In recent years, hard alloy experts and engineering and technical personnel have carried out a series of research work on the above-mentioned contradiction between hard and tough, mainly in the following three aspects. Change the particle size of WC and the content of Co, such as coarse particles, fine particles (including nanoscale), and particle sizes of different proportions, find the best conditions, and improve the performance of carbide tools. With a functionally graded structure, the Ti(CN) compound decomposes at high temperatures, the diffusion of atoms, and heat transfer create a gradient in the material. For example, in the sintering and heat treatment process, the appropriate atmosphere is introduced to induce the diffusion of relevant elements in the air to change the microstructure analysis of the cemented carbide, so that the material properties have a gradient change in the one-dimensional, two-dimensional, and three-dimensional spaces (mainly from the Co content. The changes in the table and the above) can solve the contradiction in the internal performance of cemented carbide. This process technology has been applied in the industry by Swedish Sandvik company abroad, but China started late, although after more than 10 years of research work, In the laboratory stage, it is necessary to work hard for industrial applications. Major key technologies and equipment have yet to make breakthroughs. Increase the surface coating to improve the mechanical properties of the material. Some people have done experiments, using TiN coated drills, life expectancy can be increased by 50% to 60%. Jiangxi Zhangyuan Tungsten Industry Co., Ltd. Yang Jiangao's total workers and others have done a lot of work. The coated materials have greatly improved in terms of hardness and wear resistance, and the coating methods have also continuously improved from chemical vapor deposition. The development of plasma physical vapor deposition, surface laser enhancement and other methods. There are also heat treatment, cryogenic treatment, magnetization and other technologies can improve the performance of the material. All of the above methods are based on the hard alloy material itself and have not broken away from the field of hard alloy materials, so the improvement of the material properties is always limited. In the 1970s, diamond production in China increased significantly. The engineers and technicians carried out experimental research on the use of synthetic diamond for geological exploration. They succeeded in trial production of diamond drill bits for mining, geology, etc. as core drills, and they gradually evolved into two types of diamond drill bits: This is an electroplated diamond drill and the other is a sintered diamond drill. The electroplated diamond drill is coated with a thick layer of diamond on the surface of the drilling tooth. The process is relatively simple, the investment is low, the process parameters are easy to grasp, the operation is convenient at room temperature, the drilling efficiency is high, but the working time is long, and a small part of the diamond is easy. Shedding, poor gauge effect. Then developed a sintered diamond drill: that is, using different carcass materials to produce different types of diamond sintered drill. For example, there are iron-based carcasses and tungsten carbide-based carcasses. The new carcass currently used is a steel-structured carbide-based carcass. Carcass composition: Tungsten carbide accounts for 15%~30%, iron accounts for 30%~45%, 663-CU is used as a binder, a small amount of other metal is added, the matrix powder is mixed with diamond, and the pressure is about 1000°C at a high temperature. 16~18MPa sintered diamond bit. Such drills have good adaptability to most rock formations, high drilling indices, and a wide range of applications, so they have developed rapidly in recent years. Diamond drill bits are widely used in mines and geological drilling. It has a high core rate for rock formations, and can be used for exploration after mining. The drilling efficiency is high, and common carbide drills are difficult to replace. In the early 1980s, foreign scientific and technical workers firstly considered how to combine diamond and cemented carbide more firmly in order to increase the service life of drilling tools, and to overcome the difficulty in unifying the toughness and toughness of the material itself, and carried out a lot of research work. For example, the United States GE company for the first time in the world synthesis of diamond composites, that is, at high temperature, high pressure synthetic diamond composite carbide substrate. In order to create a diamond composite drill bit. Combines the high hardness, high wear resistance of diamond and hard alloy impact resistance organically. Compared with cemented carbide drills, diamond composite disc (PDC) drills have long service life, high drilling speed, good performance and simple structure. In recent years, it has been widely used in coal fields and oil fields in China. In 1987, Magadian Diamond Co., Ltd. (MagadiamondCo) succeeded in developing diamond composite teeth based on the study of diamond compacts (PDC). Including toothed teeth, coal picks and other composite teeth, its synthetic technology is more difficult than the composite sheet, the various types of composite teeth installed in the drill, widely used in mine development, construction of railways, highways, bridges on. Long service life, high drilling speed, and low drilling costs. According to experiments conducted in the United States at the time, the same drill bit was used for rocks of the same hardness, and the footage could reach 1,770 meters. However, the footage of common cemented carbide drills was only 71 meters, so the life span was increased by 20 times. With the combination of diamond and carbide, the earliest patent in the world was Sweden, and later the United States became a leader. Japan, the Soviet Union and other countries have also achieved very good results. It is reported that due to advances in technology in recent years, the service life of composite diamond-shaped diamond drills has increased to 700 times. This is the ** of the drilling tool and drilling tool industry. It is also the direction of our country's development and we must catch up. China has also conducted researches and achieved good development in composite sheets (PDCs) and their drill bits. In the past, drill bits drilled by oil were imported, and they are now able to produce in China, but there is still a gap in their service life and performance. The key drilling in China still needs to use foreign drills to ease some of the gaps. The gap has narrowed recently. As regards the development of gear teeth and compound teeth, research progress has been slow, and compound technology has been difficult. In recent years, although several domestic units have conducted experimental research, no breakthrough has been made. Because people who understand cemented carbide technology in China do not understand the synthetic technology of synthetic diamonds, those who understand synthetic diamond do not understand the performance mechanism of cemented carbide, so they have increased in technical difficulty. I think that only by organizing experts in the hard alloy and superhard material industries to work together for joint research and developing their respective strengths can we produce products that have reached the international advanced level. How to shorten the gap with foreign countries must rely on reform and innovation, conscientiously study and implement the scientific concept of development, dare to take the lead in the world, and create new approaches. A company must be large, strong, and refined, rely on innovation to develop itself, including technological innovation, product innovation Innovations in systems, systems, and management are ultimately rooted in leaders who want new ideas and ideas. In order to achieve the brilliance, it is necessary to apply the joint development of technologies in various disciplines and to combine superhard materials with hard alloys. Efforts to achieve a new leap. At present, most companies’ products are traditionally popularized, and their supply exceeds demand, lack of competitiveness, and some are slow-moving, and they can only sell at a reduced price. This is not a method. We must use high-tech to transform traditional industries and strive to achieve their own characteristics. Enterprises, with unique features and performance products, have strong market competitiveness, and they can also say that they are characterized by competitiveness. They must strengthen independent innovation, stably achieve corporate transformation and upgrading, and adhere to the market demand as a guide to product structure adjustment. We must grasp the turning point in fierce market competition, look for business opportunities, seize opportunities, and make new contributions to the application of superhard materials in cemented carbide tools in China.