Flange, also known as flange or flange. It’s the part that connects the pipes to the pipes. Connect to pipe end. The flange has holes through which bolts can be threaded so that the two flanges are connected tightly. Gasket seals between flanges. Flanged fittings are fittings with flanges (flanges or adapters). It may be cast, threaded or welded. A flange connection consists of a pair of flanges, a gasket and a number of bolts and nuts. Gasket placed between the two flange sealing surface, tighten the nut, gasket surface of the specific pressure to a certain value after deformation, and fill the sealing surface uneven place, so that the connection tight leakage. Some pipe fittings and equipment have their own flange, but also belong to the flange connection. Flange connection is an important connection in pipeline construction.
The flange connection is easy to use and can withstand greater pressure. In industrial pipelines, the use of flange connection is very extensive. In the home, the pipe diameter is small, and is low pressure, can not see the flange connection. If in a boiler room or production site, there are flanged pipes and equipment everywhere.
The flange is used to secure and seal the fitting joint. Flange is mainly used for connecting fastening pipes, pipe fittings, etc., and keep the sealing performance of pipe fittings; The flange can be removed for easy disassembly and inspection of the pipeline. The flange plate is corrosion resistant, acid and alkali resistant, and can be used in water conservancy, electric power, power station, pipe fittings, industry, pressure vessel and so on.
Stainless steel flange can be used in boiler pressure vessel, petroleum, chemical, shipbuilding, pharmacy, metallurgy, machinery, food and other industries, there is easy to replace a section of the pipeline.
Reducer flange, mainly used for motor and reducer connection, and reducer and other equipment connection. The welding neck flange is used to transfer pressure to the pipeline, thus reducing the high stress concentration in the flange base.
Through the introduction of the role of flange, do you have a closer understanding of flange? Flange uses a variety of, is an important industrial parts, Therefore, in the purchase process is not to be ignored, its role prompts it to complete its own work, so it exists in its own unique way. Please go to the specialized parts wholesale market to buy flange, to prevent being deceived or encounter inferior flange, these are not conducive to the role of the flange play. Reasonable play flange role, will bring great benefits to your life.
Extensive application of welding neck flange in pipeline engineering
In pipeline engineering, flanges are mainly used for connecting pipelines. In the need to connect the pipeline, a variety of installation of a flange, low pressure pipe can use wire flange, 4 kg above the pressure of the use of welding flange. Add a sealing point between the two flanges and tighten with bolts. Flanges with different pressures have different thicknesses and use different bolts. Pumps and valves, and pipe connection, these equipment and local equipment, also made corresponding flange shape, also known as flange connection.
All in the two planes in the surrounding use bolt connection at the same time closed connection parts, generally known as “flange,” such as ventilation pipe connection, this kind of parts can be called “flange parts.” But this connection is only a partial equipment, such as flange and pump connection, it is not good to call the pump “flange parts.” Relatively small, such as valves, can be called “flange parts.”
Introduction of Quality, Technology and Features of Large Diameter Flange
Large diameter flange is one of the flanges, which is widely used and popularized in the machinery industry, and has been praised and favored by users. Large diameter flange wide range of uses, use range according to different characteristics to determine, mostly used in medium conditions more moderate, such as low-pressure non-purified compressed air, low-pressure circulating water, its advantage is the price is cheaper. Coil flange is suitable for steel pipe connection with nominal pressure not exceeding 2.5MPa, The sealing surface of the winding flange can be made of smooth type, smooth type winding flange applications, the other two ways of winding flange in use is also relatively common.
Large diameter flange is cut into lath with medium plate, and then rolled into circle. Water line, bolt hole, etc. This is generally large flange, can be 7 meters. The raw material is medium plate with good density. Large diameter flange material has carbon steel, stainless steel, alloy steel and so on.
Large diameter flange production features and uses mainly shown in these places above, we all operate using large caliber flange, we need to understand these characteristics they have.
There are three types of large diameter flange sealing surface: flat sealing surface, suitable for pressure is not high, non-toxic media occasions; Concave-convex sealing surface, suitable for occasions with slightly higher pressure; Tenon groove sealing surface, suitable for flammable, explosive, toxic media and high pressure occasions. What is the quality of large diameter flange process?
The quality process of large diameter flange is as follows:
Large diameter flange to take the use of different processes to produce large flanges have their own good or bad, but this is not. For the plate production of large diameter flange, joint location of the most critical, if this location welding bad will leak. And for the forging of large diameter large flange, flange finished products will have a layer of skin above, if the bolt hole just hit the location of the layer skin, when the pressure will appear leakage phenomenon.
We use the above quality process to make flange, the correct operation to produce a good product, we all need to take into account.