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When the mold is used, press 500,000 strokes.
The neck flange is a part that is connected to each between the shaft and the shaft, and is used for the connection between the pipe ends; it is also useful for the flange on the inlet and outlet of the equipment and is used for the connection between two equipment, such as the flange of the reducer.
The butt welding flange is a kind of pipe fitting, which refers to a flange with a neck and a round pipe transition, which is connected to the pipe by butt welding.
It is not easy to deform, has good sealing, and is widely used. It is suitable for pipelines with large fluctuations in pressure or temperature or high-temperature, high-pressure and low-temperature pipelines.
The advantage is that the price is relatively cheap, and the nominal pressure does not exceed 2.5MPa; On the pipeline of the flammable and explosive medium, the nominal pressure is about PN16MPa.
Finally, it contains relatively high nickel with stainless steel (stainless acid-resistant steel), and its work hardening rate is low, which is suitable for various places that require high cold formability.
The gasket is placed between the sealing surfaces of the two flanges.
After the nut is tightened, the specific pressure on the surface of the gasket reaches a certain value and then deforms, and fills the unevenness on the sealing surface to make the connection tight.
When in use, the knife rod passes through the small hole in the middle, install the knife head, and fix the position according to the picture.
Install the fixing fixture and add baffles on both sides of the leakage point to prevent the injected sealant from overflowing from the local sealing cavity.
The calculation of the weight of the finished carbon steel flange generally uses the following formula: (outer diameter*outer diameter-inner diameter*inner diameter-bolt butt welding flange hole diameter*bolt hole diameter*bolt hole number)*thickness=the finished product theory of flange processing weight.
According to different purposes, special-shaped steel pipes with other cross-sectional shapes are also required.
Specializing in the production of butt welding flanges, large large-diameter flanges, flat welding flanges, carbon steel flanges, stainless steel flanges, marine flanges, stainless steel flanges and other types of flanges, flange manufacturers usually work on two planes
The connecting parts that are bolted at the periphery and closed at the same time are generally called ‘flanges’.
Such as the connection of ventilation pipes, this type of parts can be called ‘flange parts’. After relevant inspections, steel characters, spraying paint, packaging and other processes, they can leave the factory.
Stainless steel flanges are made of stainless steel plates. Carbon steel flanges of different pressures have different thicknesses and use different bolts.
The application of smooth flat welding flanges is relatively large.
Flat welding steel flanges are generally used in carbon steel pipes with a nominal pressure of no more than 25MPa.
The sealing surface of the flat welding flange can be made smooth and is mostly used in moderate media conditions Under the circumstances, such as low-pressure non-purified compressed air and low-pressure circulating water, the advantage of the neck flange is that the price is relatively cheap and its structure is reasonable, butt-welded steel flange.
It is used for the butt-welding strength and rigidity of the flange and the pipe and can withstand high-temperature High pressure and repeated folding and temperature fluctuations, reliable sealing.
The nominal pressure is 02525MPa. The butt welding flange adopts a concave-convex sealing surface.
The basic standard types of flange production: national standard: alloy steel and stainless steel, a total of steel types. The gasket is placed between the sealing surfaces of the two flanges.
After the nut is tightened, the specific pressure on the surface of the gasket reaches a certain value and then deforms, and fills the unevenness on the sealing surface to make the connection tight.
Its loss is all converted into heat energy, so it will cause the oil pump to overheat. Before installation, be sure to carefully check the condition of all sealing surfaces.
If there are deep scratches on individual sealing strips, do not use local grinding methods, you can use a flange processing lathe with a neck flange and a lightweight If the radial penetration scratches are on the sealing surface of the flange, the overall grinding method can be used to eliminate or update the sealing gasket to avoid the increase of bolt consumption load.
Flanges may have different outer diameters, staggered openings, and unequal gasket thicknesses. Therefore, the fixtures produced by processing stainless steel flanges should correspond to the flanges on the side and cannot be interchanged.
Therefore, measuring the dimensions and numbers of each part is the process of fixture processing and installation. The essential.
For pipe fittings, please link: https://bekingpiping.com