Free Forging Processes Are Classified With Forgings

Free forging usually refers to manual free forging and machine free forging. Manual free forging relies mainly on manpower to forging blanks using simple tools to change the shape and size of the blanks to obtain the required forgings, which are mainly used in the production of small tools or appliances. Machine free forging (referred to as free forging), mainly rely on special free forging equipment and special tools to forge the blank, change the shape and size of the blank, so as to obtain the desired forging.

Free forging is characterized by a gradual partial deformation of the blanks on top of the flat top or between tools. Free forging is suitable for forging large forgings because the tool is in contact with the blank part, so the required equipment power is much smaller than the die-forged equipment used to produce forgings of the same size. Such as tons of forging water press can only mold forging hundreds of kilograms of forgings, while tons of free forging hydraulic press can be forged weight of more than 100 tons of large forgings.

The free forging process of any forging consists of a series of deformation processes. According to the deformation nature and degree of deformation of the operation, the free forging operation can be divided into basic operation, auxiliary operation and dressing operation three categories. The process of changing the shape and size of a blank to obtain forging is called a basic operation. The basic processes of free forging are镦 coarse, long, punch, spindle expansion, spindle length, bending, cutting, misalmed, twisted, forged and so on. In order to complete the basic process and make the blanks pre-produce a deformation of the process is called auxiliary process, such as ingot-to-prism, pre-clamps, segmented indentation, etc. Used to refine the size and shape of forgings, eliminate forging surface unevenness, twisting, etc. , so that forgings fully meet the requirements of forging chart work is called dressing process, such as drum rolling circle, flat end face, bending straight and so on. The amount of deformation in the dressing process is usually small.