The forging process used in the forging flange production process generally consists of the following processes, namely, billet blanking, heating, forming, and post-forging cooling. The forging process includes free forging, die forging and film forging. At the time of production, different forging methods are selected according to the quality of the forgings and the number of production batches.
The free forging productivity is low, the machining allowance is large, but the tool is simple and the versatility is large, so it is widely used for forging a single piece and a small batch of forgings with a simple shape. Free forging equipment includes air hammer, steam-air hammer and hydraulic press, which are suitable for the production of small, medium and large forgings.
Die forging has high productivity, simple operation, and easy mechanization and automation.The die forgings have high dimensional accuracy, small machining allowance, and reasonable distribution of the fiber structure of the forgings, which can further improve the service life of the parts.
Forging flanges generally have lower carbon content than cast flanges and are less prone to rust. Forgings have better line shape, tighter structure and better mechanical properties than cast flanges.
Different high-pressure flange connection forms are determined according to the specific conditions, which leads to different parts and equipments. The procedures required for installation will be different, so the specific installation components and equipment will be determined according to different situation.