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The future development trend of ceramic wear-resistant valves

管理员 260

The valves commonly used in various industries are metal valves. The use of ceramic butterfly valves has been around for hundreds of years. Although the metal valves have been improved by structure and materials, they are not limited by the properties of metal materials, and can not adapt to higher and higher wear and strong corrosion. The demand for severe working conditions is mainly reflected in the short service life, and the serious leakage greatly affects the stability of the system operation. Traditional metal valves are in urgent need of radical innovation in materials, design and manufacturing processes. The application of ceramic materials to pfa lined diaphragm valves is a bold and beneficial innovation.

The ceramic material has a small deformation amount and a much higher bonding strength than the metal. Generally, the crystal ionic radius of the ceramic material is small, and the ion electricity price is high, and the coordination number is large. These properties determine the tensile strength of the ceramic material, The compressive strength, modulus of elasticity, hardness, and the like are very high. However, the "brittle" and difficult processing of ceramic itself limits its application range. In the past decade, due to the development and progress of martensitic transformation toughening technology, composite technology and nano-ceramic concept, ceramics have been made " The brittleness has been greatly improved, its toughness and strength have been greatly improved, and the scope of application has been continuously expanded.

In recent years, the application of new ceramic materials in petroleum, chemical, machinery and other fields is very active. The use of ceramic wear resistance and corrosion resistance to make wear-resistant and corrosion-resistant parts instead of metal materials is an important factor in the high-tech materials market in recent years. One of the development directions. The social and economic benefits of ceramic valves:

1. The dome valve adopts high-tech new ceramic structural material to make the sealing parts and wearing parts of the valve, which improves the wear resistance, anti-corrosion and sealing of the valve product, and greatly prolongs the service life of the valve.

2. The use of ceramic lined elbow can greatly reduce the number of repairs and replacements of valves, improve the safety and stability of the supporting equipment operating system, and save equipment repair costs.

3. The use of ceramic lined pipe can improve the sealing of industrial piping systems, and minimize leakage to protect the environment.

4. The raw materials for manufacturing ceramics are wide, the cost is low, and ordinary ceramics such as aluminum, carbon, silicon, etc. can be used to manufacture ceramic materials with superior performance, which can save a lot of metal materials and rare mineral resources. Wear-resistant ceramic valves are mainly used in electric power, petroleum, chemical, metallurgy, mining, sewage treatment and other industrial fields, especially in the face of high wear, strong corrosion, high temperature, high pressure and other harsh conditions,pfa lined plug valve show its excellent performance. . Ceramic valves can meet the requirements of high wear and strong corrosion. Especially outstanding is the long service life. The performance and price ratio of ceramic valves is far superior to other similar metal valves. With the continuous development and advancement of science and technology, ceramic materials have become more mature and complete from the aspects of formulation, molding, processing and assembly process. Ceramic valves have gained recognition from the valve industry for their excellent performance. The successful experience of manufacturing ceramic valves can also be applied to a wider range of engineering fields.

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