The Application of a New Material on Industrial Valve

Nowadays the industrial valves used widely in all sorts of fields are metal valves. although the metal valve has a history with husbands of years and its structure and material is improved all the time, this valve now can not fulfill the requirement of high abrasion-proofness and high corrosion-proofness owing to the restriction of the metal material’s own property. The modern day industrial valves are short in usage life and also have an excellent negative effect on the soundness of the system operation. It is urgent to fully innovate the traditional metal valve from the aspects of material, design and manufacturing process. As being the new material in the 21st century, the advanced ceramics is valued by more and more scientists. The scientists think that it can be a beneficial innovation to apply the ceramics into industrial valve.
A ceramic material is normally understood as restricted to inorganic crystalline oxide material. It is solid and inert. Besides, in the common situation, the crystal ions that are made of the ceramics have a very short radius but have a high electrical valence and a great coordination number. Due to these properties, ceramic materials are brittle, hard, strong in compression, weak in shearing and tension. They withstand chemical erosion that occurs in other materials subjected to acidic or caustic environment. Meanwhile, ceramics generally can withstand very high temperatures such as temperatures that range from 1, 000 �C to 1, 600 �C (1, 800 �F to 3, 000 �F). As for the brittle property of the ceramics, it indeed will limit the range of application. However , in recent times, because of the development of Martensitic Transformation in Zirconia Toughened Ceramics, composite technology and nanotechnology, the brittle property has been greatly improved. Therefore , this property can not hinder the ceramics to be applied into different industries, such as petroleum, chemical and mechanical. Addititionally there is no doubt that it is a trend that the ceramics will replace the metal within the material of industrial valve step by step.
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There will be great economic benefits when the ceramics is applied into the industrial valve. The advantages will be described in the following content. Firstly, the wearing resistance, corrosion-proofness and leak-proofness will be improved. thereby, the usage life of the industrial valve will be lengthened greatly. Secondly, the chances for maintenance of the valve will be reduced. To some degree, the system operation will be safer and even more stable. Meanwhile, the price for maintenance will be saved a lot. Thirdly, the ceramic valve can improve the leak-proofness of the industrial pipeline and prevent the utmost leak. For this point, it is extremely positive to promote environment protection. Last but not least, the raw material for ceramics is very reduced cost and extensive in range. For instance , the common raw material such as Aluminum, carbon can produce the ceramics with excellent natures. All in all, that the ceramics is applied in to the production of industrial valves is a developmental trend in the

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