Bulk Deformation And Sheet Metal Forming

Usually the initial shape is a simple one.

Bulk deformation and sheet metal forming.

Bulk deformation refers to the use of raw materials for forming which have a low surface area to volume ratio. Deformation processes are important in transforming one shape of a solid material into another shape. Bulk forming and sheet metal forming. Metal forming processes can be classified under two major groups.

In sheet metal working the metal being processed will have a high surface area to volume ratio. Machines for each use tensile compressive and shear stresses or a combination of tensile and compressive stresses to permanently deform the metal into desired shapes. Bulk deformation processes and sheet metal working processes. The pri mary use of the tenn bulk deformation is to distinguish it from sheet fonning processes.

The key difference between bulk deformation and sheet metal forming is that in bulk deformation the work parts have a low area to volume ratio whereas in sheet metal forming the area to volume ratio is high. Bulk defonnation is a metal fonning process where the defonnation is three dimensional in nature. Typically metal forming processes can be classified into two broad groups. Most deformation processes and their associated forming machine tools can be placed into one of two groups.

In sheet forming opera tions the defonnation stresses are usually in the plane of the sheet metal whereas in bulk defonnation the. Rolling forging extrusion and drawing are bulk forming processes.