Open die forgings-free forgings
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Open die forgings-free forgings

Open die forgings-free forgings is one of the advantages of Tong xin precision forging, Open die forging are mainly used for forging weapons aircraft forgings, diesel engine, Marine forgings, forgings, petrochemical, mining forgings, nuclear power forgings, etc., our company free forging products are superior in good quality and stable, our open die forging has established long-term and stable cooperation with many well-known enterprises at home and abroad. If you have requirements, please feel free to let us forge for you.

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Product Description

Open die forgings-free forgings is a processing method, referred to as free forging, which uses impact force or pressure to make the metal deform freely in all directions between the upper and lower anvil surfaces without any restriction to obtain the desired shape and size and certain mechanical properties.

Forging characteristics

The tools and equipment used in open die forging are simple, universal and low cost. Compared with casting blank, open die forging eliminates shrinkage cavity, shrinkage porosity, porosity and other defects, so that the blank has higher mechanical properties. Forgings are simple in shape and flexible in operation. Therefore, it is particularly important in the manufacture of heavy machinery and important parts.

Application field

Open die forging is to control the shape and size of forgings by manual operation, so the forging precision is low, processing allowance is large, labor intensity is large, productivity is not high, so it is mainly used in single, small batch production.


Open die forging is divided into manual open die forging and machine open die forging.

Manual open die forging production efficiency is low, labor intensity is large, only used for repairing or simple, small, small batch of forging production.

In modern industrial production, machine open die forging has become the main method of forging production, in heavy machinery manufacturing, it plays a particularly important role. The shape and size of the forging are mainly determined by the technical level of the operator.

The main equipment

Open die forging equipment is divided into hammer and hydraulic press two categories. The forging hammer used in production has air hammer and steam - air hammer, some factories also use simple structure, less investment spring hammer, plywood hammer, lever hammer and wire hammer, etc. Hydraulic press is the only way to produce large forgings by deforming billets under static pressure produced by liquid.


The basic process

The basic processes of free forging include upsetting, drawing, punching, bending, twisting, dislocation, cutting and forging.

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