Process and Characteristics of High Pressure Flange

There are three types of sealing surfaces for high-pressure flanges: planar sealing surfaces, suitable for low-pressure non-toxic media; The concave and convex sealing surface is suitable for slightly higher pressure; Tendon sealing surface, suitable for flammable, explosive, toxic media and high pressure. The contact width between the high-pressure flange gasket and the sealing surface is very narrow (line contact), and the machining accuracy of the sealing surface and gasket is high. Common integral flanges include flat welding flanges and welding flanges.
In high-pressure equipment and pipelines, lenses or other shaped metal gaskets are made of copper, aluminum, No. 10 steel, and stainless steel. The high pressure flange has poor rigidity and is suitable for applications where the pressure P is less than 4 MPa. High pressure flange, also known as high neck flange, has good rigidity and is suitable for high pressure temperatures. High pressure flange gasket is a ring that can produce plastic deformation and has a certain strength.
High pressure flange manufacturers believe that low pressure small diameter wire connection flanges, high pressure and low pressure large diameter welding flanges, and the thickness of the flange and the diameter and number of connecting bolts vary under different pressures. Gaskets are mostly cut from non-metallic plates or produced by professional manufacturers according to specified dimensions. The materials include asbestos rubber plate, asbestos plate, polyethylene plate, etc. Metal gaskets made of non-metallic materials such as asbestos wrapped metal plates (white iron sheet, stainless steel); There are also spiral wound gaskets made of thin steel strips and asbestos strips.
The manufacturer of high-pressure flange believes that high-pressure welding flange refers to the flange connected by neck butt welding and connected by transition and butt welding with circular pipe. Welding flanges are produced and applied in accordance with certain principles and principles in production and application to ensure that they can be used in the correct way and provide outstanding application value and effects. Welding flanges are suitable for pipelines with large pressure or temperature fluctuations, or pipelines with high temperature, high pressure, and low temperature, as well as pipelines with expensive, flammable, and explosive media.
Technical conditions for high-pressure flanges:
Many high-pressure flanges are connected by welding. Therefore, in order to improve the welding quality, bevels with a certain angle are opened at the edges and ends of the flange. The thickness, angle, deviation range, surface quality, and mechanical properties of the edge groove are approximately the same as those of the piping. In order to facilitate welding, the steel grade of steel pipe fittings is the same as that of connecting pipes.
All high pressure flanges require surface treatment. After sandblasting, apply a corrosion resistant coating to the iron oxide coating on the inner and outer surfaces. This is to facilitate transportation and prevent corrosion and oxidation.
The packaging of small pipe accessories requires the manufacture of approximately 1 cubic meter of wooden boxes. The flange in the packaging box shall not exceed 1 ton. The standard allows complete sets, but the total weight is usually less than 1 ton.
Components are not obvious in the entire product, pipeline, or machine, but flanges play a very important role. In the future, with the development of flange materials and technology, the performance of the flange will be further improved to ensure operational stability.