open die forging

The tools and equipment used for open die forging are simple, versatile and low in cost. Compared with casting blanks, open die forging eliminates shrinkage holes, shrinkage porosity, pores and other defects, so that the blanks have higher mechanical properties. Forgings are simple in shape and flexible in operation. Therefore, it has special significance in the manufacture of heavy machinery and important parts.
open die forging relies on manual operation to control the shape and size of forgings, so forgings have low precision, large machining allowance, high labor intensity and low productivity, so it is mainly used in single-piece and small batch production.
open die forging is a processing method in which the metal is freely deformed in all directions between the upper and lower anvil surfaces by impact force or pressure, and the required shape and size and certain mechanical properties are obtained without any restriction, which is referred to as free forging.
open die forging is divided into manual open die forging and machine free forging.
Manual open die forging has low production efficiency and high labor intensity, and is only used for repairing or the production of simple, small and small batches of forgings.
In modern industrial production, machine open die forging has become the main method of forging production, and it plays a particularly important role in heavy machinery manufacturing. The shape and size of the forgings produced are mainly determined by the technical level of the operator.

open die forging equipment is divided into two categories: forging hammers and hydraulic presses. Forging hammers used in production include air hammers and steam-air hammers. Some factories also use spring hammers, plywood hammers, lever hammers and wire hammers with simple structure and low investment. The hydraulic press deforms the billet by the static pressure generated by the liquid and is the only way to produce large forgings.