Bulk Deformation And Sheet Metal Forming

Rolling forging extrusion and drawing are bulk forming processes.

Bulk deformation and sheet metal forming.

Bulk defonnation is a metal fonning process where the defonnation is three dimensional in nature. Metal forming processes can be classified under two major groups. 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 deformation is characteristic in that the work formed has a low surface area to volume ratio.

Bulk deformation refers to the use of raw materials for forming which have a low surface area to volume ratio. Bulk forming and sheet metal forming. The pri mary use of the tenn bulk deformation is to distinguish it from sheet fonning processes. Bulk deformation processes and sheet metal working processes.

Typically metal forming processes can be classified into two broad groups. In sheet forming opera tions the defonnation stresses are usually in the plane of the sheet metal whereas in bulk defonnation the. In sheet metal working the metal being processed will have a high surface area to volume ratio. Deformation processes are important in transforming one shape of a solid material into another shape.

Usually the initial shape is a simple one. 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.