Final forging die bore of forged flange:
The function of the final forging die chamber of the forged flange is to make the blank deform to the required shape and size of the forging. Therefore, its shape should be the same as that of the forging; However, because the forgings will shrink when they are cooled, the size of the final forging die chamber should be enlarged by a shrinkage amount compared with the size of the forgings. The shrinkage of steel forgings is taken as 1.5%. In addition, there are flash grooves around the die bore to increase the resistance of the metal flowing out of the die bore, promote the metal to fill the die bore, and accommodate the excess metal of the forged flange at the same time.
Disadvantages and limitations of die forging of forged flanges:
• the weight of forged flange of die forging is limited by the capacity of general die forging equipment, mostly below 7okg;
• the manufacturing cycle of forged flange of forging die is long and the cost is high;
• the investment cost of die forging equipment is higher than that of free forging.
Blank mold chamber for forging flange
For the forged flange with complex shape, in order to make the blank shape of the forged flange basically conform to the shape of the forged flange, so that the metal can be reasonably distributed and well filled in the die chamber, the blank must be made in the blank making die chamber in advance.
