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How to select forged flange

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Update time : 2020-12-07 14:38:31

  How to select the forged flange, mainly reflected in the selection of flange joint surface, there are many flange connection methods, including welding flange, screw flange, etc., welding flange has good sealing performance and can withstand the fluctuation of high temperature and high pressure repeated bending.

  First of all, large diameter flange types are: large diameter flat welding flange, large diameter stainless steel flange. The wear of large flange has always been an important factor affecting safe and civilized production. With the continuous development of science and technology, materials have been constantly innovated, such as cast stone, cast steel, alloy, centrifugal casting composite ceramics and so on, It has become one of the most widely used wear-resistant materials, accounting for about 80% of the international special ceramic market share. The ceramic layer is replaced on the inner surface of the ceramic composite pipe formed by this method. Compared with the carbon steel and manganese steel pipe, the wear resistance of the ceramic composite pipe is improved to a certain extent.

  Generally, the large diameter connection of flange is 7m in diameter, with simple structure, convenient processing and easy anti-corrosion. For example, for the connection of threaded flange, the sealing effect of this kind of connection is better than that of the former. It is determined that the structure is disordered and it is difficult to replace the gasket squeezed in the groove.

  The determination of flange nominal pressure is related to the maximum operating pressure, operating temperature and flange data. Because when drawing up flange size series and calculating flange thickness, the mechanical properties of 16MnR at 200 ℃ are taken as the benchmark. Therefore, the flange size determined by the rules based on this basis, at 200 ℃, its maximum operating pressure is considered to be the nominal pressure of the flange with this scale.