At present, the valves commonly used in the production of various industries in our country are metal valves. The use of metal valves has been in the history of more than a hundred years. Although the structure and material improvements have been made during this period, the restrictions of metal materials themselves can not meet the requirements of high Wear, corrosion and other harsh conditions need. Mainly reflected in the short service life, a serious leak greatly affected the stability of the system operation. The traditional metal valve urgent need from the material, design and manufacturing processes and other aspects of the radical reform. As a new material in the 21st century, advanced ceramic materials have been valued by more and more scientific workers. Applying it to industrial valves is a bold and beneficial innovation. Ceramic material deformation is very small, much higher than the metal bonding strength, under normal circumstances the composition of the ceramic material crystal ion radius is small, and the ion price is high, with a large number of coordination, these properties determine the tensile strength of ceramic materials, Compressive strength, elastic modulus, hardness and so on are very high. However, ceramic itself "brittle" and difficult processing limits its scope of application, over the past decade, due to martensitic transformation toughening technology, composite materials technology and nano-ceramic concept of the development and progress have made ceramic " Brittle "has been greatly improved, its toughness and strength has been greatly improved, the scope of application continues to expand. In recent years, the application of new ceramic materials in the fields of petroleum, chemical engineering and machinery has been very active. Making use of the wear resistance and corrosion resistance of ceramics to make the wear-resistant and corrosion-resistant parts instead of the metal materials has become an important market for high-tech materials in recent years One of the development direction. Ceramic application process to solve the following key issues: to solve the problem of ceramic brittleness and improve the toughness of ceramics; control of shrinkage and improve the firing rate of ceramic materials; development and development of high-temperature kiln; development of ceramic processing equipment; ceramic parts and metal body Sophisticated. Tianjin Sheng Kai Industrial Technology Development Co., Ltd. on the above key issues, carried out research, and to be resolved. After trial production, in power, metallurgy, chemical and other industries in a wide range of manufacturers to apply. Ceramic valve has a huge social and economic benefits: 1. The use of new high-tech ceramic structural materials for valve sealing parts and wearing parts, to improve the valve wear resistance, corrosion resistance and sealing, greatly extending the life of the valve. 2 . The use of ceramic valves can greatly reduce the number of valve repair and replacement, and improve the safety and stability of the equipment operation system, reduce the labor intensity of workers and save the cost of equipment repair. 3. The use of ceramic valves to improve the sealing of industrial piping systems, while preventing leakage to a maximum extent, will play a positive role in promoting environmental protection. 4. Wide range of raw materials for manufacturing ceramics, low cost, with ordinary aluminum, carbon, silicon and other non-prime can produce superior performance of ceramic materials, can save a lot of metal materials and rare mineral resources. Wear-resistant ceramic valve is mainly used in electric power, petroleum, chemical, metallurgy, mining, sewage treatment and other industrial areas, especially in the face of high wear and tear, strong corrosion, high temperature, high pressure and other harsh conditions, but also shows its superior performance. It can meet the high wear and corrosion of the use of the environment, especially outstanding feature is the long life, its cost performance is far superior to other similar metal valves. With the continuous development and progress of science and technology, ceramic materials from the formula, molding, processing and assembly technology and other aspects of the technology is more mature and complete, ceramic valves with its excellent performance has been more recognized by the industry. The successful experience of using the manufacture of ceramic valves can also be applied to a wider range of engineering applications.
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