Large flanges for performance and advantages

The flange connection is a detachable connection that can be connected according to different parts to ensure the normal connection of the flange. Flanges have different classification standards and classifications, which can be divided into container flanges and pipe flanges according to the connected components. According to the structure type, there are integral flange, looper flange and threaded flange. Common flanges for large flanges have flat weld flanges and butt weld flanges. The flat welding flange has poor rigidity and is suitable for the occasion of pressure p≤4MPa. The butt welding flange is also called high neck flange and has high rigidity, which is suitable for occasions with high pressure temperature. There are three types of flange sealing surfaces: flat sealing surface, suitable for low pressure, medium; concave sealing surface, suitable for occasions with high pressure; groove sealing surface, suitable for flammable, explosive, toxic Where the medium and pressure are high. Flange fittings of different properties have good product performance in different fields, and the effects and environments are different, and the effects will be different.

Ordinary rubber gaskets are suitable for temperatures below 120 °C; asbestos rubber gaskets are suitable for general corrosive applications where the water vapor temperature is below 450 ° C, for oil temperatures below 350 ° C and pressures below 5 MPa. Medium, commonly used is acid-resistant asbestos board. Large flanges are used in high-voltage equipment and pipes, and are made of copper, aluminum, 10 gauge steel, stainless steel lens or other shapes of metal gaskets. The contact width of the high-pressure gasket of the large flange and the sealing surface is very narrow (line contact), and the sealing surface and the gasket have a high processing finish.

The gasket of the large flange is a ring made of a material that is plastically deformed and has strength. Most of the gaskets are cut from non-metal plates or made by professional factories according to the specified size. The materials are asbestos rubber sheets, asbestos sheets, polyethylene sheets, etc.; asbestos is also used for thin metal sheets (white iron, stainless steel). A metal-clad gasket made of a non-metallic material; and a wound gasket wound with a thin steel strip and an asbestos tape.

Large flanges can have different use values in use, with different production effects and uses. The material of the large flange is different, and the production and processing processes are different. Therefore, when using and processing large flanges, pay attention to the method and use according to the procedures and methods.