Forged flanges are used for the connection between pipe fittings. Forged flanges have the best mechanical properties of all flanged products. Forged flanges have good corrosion resistance. In general, except for a few hydrogenating agents, they are resistant to corrosion by various chemical media, and have good acid, alkali and has no rust, no corrosion, no bacteria, no electrochemical corrosion characteristics.
The raw material used for the forged flange is the tube blank, which needs to be repeatedly beaten after cutting to eliminate the segregation and looseness in the ingot. The basic processes of forging flanges are cutting, heating, pre-forging, final forging, upsetting, lengthening, punching, bending, twisting and cutting.
In the production of forged flanges, precise cutting is required according to actual needs and size, pre-forging by heating, and finally final forging; upsetting is to forge the original blank along the axial direction to reduce its height and increase the cross section. Lengthening is a forging process that reduces the cross-sectional area and increases the length; punching refers to drawing various patterns on steel plates and materials to meet different needs; and finally forming by cutting.www.morayshaft.com