subject: Improvement along with ceramics [print this page] Improvement along with ceramics Improvement along with ceramics
Metal valves have been widely used in various industries in China for nearly one hundred years. Actually, they are popular with great benefits for the development of industry. But as industry develops, the working environment is becoming more and more serious like high abrasion and corrosion. We must admit that metal valves are not able to meet the strict requirements. The short service life and frequent leakage are the major shortages which greatly affect stability of the system. And there are many improvement trials for valve structure and raw materials. Stepping into the 21st century, it is urgent to improve from all possible aspects, such as raw materials, design and fabrication technology. Ceramics, as a new found material, is hoped to do something in the valve industry.
When referring to ceramics, people would come up with the characteristic of fragility. Thus, they are limitedly employed before. However, with the developing technologies, the toughness and strength have been highly improved. Besides, ceramic has small deformation and much higher combination of strength than the metal. Generally, the composed ceramic materials are always with small crystal ionic radius and large ligancy. All the characteristics ensure the ceramic materials with advantages of high tensile strength and compressive strength. If they are made full use of, it is certain that the industry would go further and smoothly.
It is true that ceramics have been actively employed in fields of petroleum, chemicals, machinery industry. They continue to bring in great benefits. Some benefits are listed in the following.
At first, new ceramic structure enables valve products to increase wear resistance, corrosion protection and sealing and extended the life of the valve through employing high-tech materials on vulnerable parts of the valve sealing components. Secondly, the use of ceramic valve can efficiently reduce the times of replacing and repairing a large number of lower valves. Thus, it is useful to improve security and stability of the equipment operation supporting system. Thirdly, ceramic valves can increase the tightness of industrial piping systems. Then, it is able to prevent the leakage and play positively at protecting environment. At last, a wide range of raw materials for ceramic are low cost. Materials like aluminum, carbon, silicon and other common factors can not compete with ceramic materials on this aspect. As a result, a large number of rare metal materials and mineral resources are saved to some extend.
Since there are so many benefits, why not take measures to make good use of ceramic materials? Apart from the valve industry, there exists a promising future for this kind of new materials.
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