Introduction to the forging process of stainless steel flanges

Stainless steel is a common machinery industrial product, and the flange is also called flange flange. Flanges are the interconnecting parts between pipes and pipes and are used for connection between pipe ends; flanges are also used at the inlet and outlet of equipment for connection between two equipment. So it is also called a fastener.

Forged flange is a product with better mechanical properties among flange products. Its raw material is generally a tube blank, which is then cut and then continuously beaten to eliminate defects such as segregation and looseness in the steel ingot. The price and mechanical properties are one grade higher than ordinary cast flanges. Flanges are parts that connect pipes and pipes and valves to each other. They are connected to the end of the pipe; flanges are also used on the inlet and outlet of the equipment. The connection between two equipment is the part that connects the pipe and the pipe to each other.于管端。 At the end of the tube. It is a kind of accessory products for pipelines.

　　 The main materials of forged flanges are carbon steel, alloy steel, and stainless steel. The main standards are national standard, electrical standard, American standard, German standard, Japanese standard and so on. The main anti-corrosion treatments are oiling and galvanizing. Forged flanges have better pressure and temperature resistance, and are generally suitable for high-pressure and high-temperature working environments.

　　 There are two forging processes for butt-welded flanges with necks:

　　 One: die forging; that is, the steel material is heated to 1200C in a heating furnace, and then placed in a mold of corresponding specifications for forging. For 2"-10" (DN50-DN250), the inner hole needs to be punched with a special punch.

　　 Two: Free forging. The raw material is heated to 1200C in the heating furnace, and then the square material is forged into a round cake shape, punched, and the punched raw material is expanded to the required size with special equipment (roller and horse frame). Suitable for specifications above (DN300-DN3000).

　　 American standard butt welding flange and German standard butt welding flange neck can be pressed into shape during forging. The neck of pressure vessel butt welding flange II can also be pressed out.