Forging starts from ancient years. Heated softened alloy stock is presented into a split tool and tremendous pressure is exerted, forcing the alloy to take the shape of the two halves of the tooling. The resulting finish of the part takes the form and surface finish of the tool cavity.
Tooling parting line flash is removed by a series of cropping and finishing and polishing operations. These parting line area surface finishes are dependent on the controls of these processes.
Forging tolerances
Due to the nature of the forging process and requirements for draft angles, product mass variations and materials, tolerances must be negotiated on a project by project basis.
Product mass, material and design affect the tolerances that can be achieved by this process.
Theoretical exactness is rarely attained, and it is therefore necessary to make allowances for deviations. These allowances can take the form of post forging machine allowances or hand finishing processes.
Advantages of forging:
Parts manufactured by forging are stronger
Forging offers more consistent and better metallurgical properties
Forging production is very fast, it suitable for massive quantity production.
Forged products have high density, good mechanical properties and wear resistance.
The forging process has a strong control over the shape of metal materials and can produce a variety of complex workpieces.
The nature of forging excludes the occurence of porosity, shrinkage, cavities and cold pour issues.