The characteristics of stainless steel flange, stainless steel special pipe flange manufacturers to explain for you
Release time:
Oct 24,2022
Stainless steel special pipe flange manufacturers believe that alloy flanges are the connecting device of two large-diameter pipes, usually two flange pieces plus several fastening bolts. The alloy flange is made of stainless steel flange. Alloy flanges are used for pipes and pipelines with special characteristics, mainly for high temperature and high pressure locations. Common materials are12Cr1MoV, 15CrMo, P91, P22, 10CrMo910, etc. Low carbon steel flange has good plasticity and low strength, but it will harden after adding an appropriate amount of carbon, the plasticity will decrease, and the strength will increase.
Stainless steel special material pipe flange manufacturers believe that alloy flange connections may need to withstand higher tensile, compressive, torsional and shear strength, da flange is a better choice. The main design disadvantage of alloy flanges is that they cannot be guaranteed to be leak-free. This connection is dynamic. Cyclic loads such as thermal expansion and fluctuations will cause movement between the flange faces and affect the function of the flange, thereby destroying the integrity of the flange and causing leakage.
In the production of alloy flanges, the liquid shrinkage and solidification shrinkage of the alloy are manifested as the volume reduction of the alloy, usually expressed by the volume shrinkage rate. They are the root cause of casting shrinkage cavity and shrinkage porosity defects. Although the solid shrinkage of the alloy is also a volume change, it only causes a change in the external dimensions of the casting. Therefore, it is usually expressed by line shrinkage, which is the root cause of defects such as internal stress, deformation, and cracks in castings.
Stainless steel special material pipe flange manufacturers believe that alloy steel studs used on alloy flanges should be of high grade and high quality steel, and nut materials are often determined according to the matching bolt materials. These combinations are specified in the Common Standard. Generally, the nut material is slightly lower than the bolt material, and the hardness of the nut is lower than that of the bolt.HB30 is around. According to the different types of structure, bolts can be divided into hexagon head bolts and studs (also known as studs), and studs can be divided into threaded bolts and non-threaded bolts. Under mild operating conditions, the hexagon head bolts used on alloy flanges are usually used with flat-welded flanges and non-metallic washers. Hexagon head bolts commonly used materials are BL3 or Q235B, in harsh operating conditions, stud bolts are often used in conjunction with welded flanges. The cross-sectional shape of the threaded stud does not change, so its load-bearing capacity is strong, while the non-threaded stud used on the alloy flange is relatively weak.
Stainless steel special pipe flange manufacturers believe that the working principle of stainless steel flanges is to connect two pairs of stainless steel flanges to the pipe ports to be connected, and then connect the two pipes with flanges. Stainless steel building materials are one of the commonly used building materials. Stainless steel has good corrosion resistance and can maintain the integrity of the design for a long time. Stainless steel flanges have mechanical strength and high ductility, are easy to process and manufacture, and meet the structural requirements of architects and designers. Almost all metals react with oxygen in the air to form an oxide film on the surface of the metal. Ordinary steel can also form an oxide film, but the main component is iron oxide, which is relatively loose and easy to rust. An oxide film is formed on the surface. A dense oxide film is often formed on the surface of stainless steel flanges, which can effectively prevent stainless steel from rusting.
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