Difference Between Bulk Forming And Sheet Metal Forming

Sheet metal forming involves forming and cutting operations performed on metal sheets strips and coils.

Difference between bulk forming and sheet metal forming.

Usually the initial shape is a simple one. Bulk deformation refers to the use of raw materials for forming which have a low surface area to volume ratio. Bulk deformation shape changes are significant work parts have a low surface area to volume ratio. A more comprehensive list applicable to other metal forming processes including bulk and sheet metal forming has been presented by schey 1983.

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. They each use a different method. Forging and forming aren t the same however. Deformation processes are important in transforming one shape of a solid material into another shape.

In bulk deformation processes part of the work have low volume to area ratio on the other hand in sheet metal processes part of the work have a high volume to area ratio in sheet metal processes term press working. On the word we can say the shape changes are significant. Bulk forming processes one is bulk forming and the other is sheet metal forming. In the next sections the different sheet bulk metal forming processes illustrated in fig.

Classification of basic sheet forming processes bending deep drawing shearing. From iron and steel to aluminum bronze and more countless metals and alloys support these two metalworking processes. 5 are discussed including detailed process analysis and potential industrial applications. Describe a the similarities and b the differences between the bulk deformation processes considered last week and the sheet metal forming processes looked at in this week s lecture.

Typically metal forming processes can be classified into two broad groups. Upsetting is a typical cold bulk forming operation with linear tool motion and a controlled reduction of at least one workpiece dimension between two tools. Rolling forging extrusion and drawing are bulk forming processes. Tools include punch die that are used to deform the sheets.

Forging and forming are two common types of metalworking processes. They both involve the manipulation of metal to achieve a different size and or shape. The surface area to volume ratio of the starting metal is relatively high. Upsetting of sheet metal.

In summary they may be divided into the following categories.