Difference Between Bulk Forming And Sheet Metal Forming

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.

Difference between bulk forming and sheet metal forming.

The main characteristic of these processes is that the final product has the dimensions of a magnitude similar to the sheet thickness projecting out of the plane of the sheet. Describe the similarities and the differences between the bulk deformation processes and the sheet metal forming processes we have studied. Rolling forging extrusion and drawing are bulk forming processes. In bulk deformation processes the workpiece undergoes large plastic deformation.

They both involve the manipulation of metal to achieve a different size and or shape. Bulk deformation refers to the use of raw materials for forming which have a low surface area to volume ratio. Bulk causes workpiece to deform plastically pushed to fill die sheet metal is on workpiece of sheets or strips pushed into a die 17 2 extrusion is a fundamental shaping process. Bulk and sheet forming flashcards.

Bulk deformation shape changes are significant work parts have a low surface area to volume ratio. Differences in plastic flow resulting from the plane stress conditions of sheet metal forming and the three dimensional stress conditions of bulk metal forming have long been utilized to classify metal forming processes into two different groups. A more comprehensive list applicable to other metal forming processes including bulk and sheet metal forming has been presented by schey 1983. Forging and forming aren t the same however.

Create flashcards for free and quiz yourself with an interactive flipper. Deformation processes are important in transforming one shape of a solid material into another shape. 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.

Sheet bulk metal forming sbmf processes are defined as sheet metal forming where the flow occurs in three dimensions similar to bulk metal forming. Bulk forming processes one is bulk forming and the other is sheet metal forming. The most typical in this group is the embedded pin transducer technique. Recent developments in metal forming technology lead to the development of a new group of metal forming processes entitled sheet bulk metal forming.

In sheet metal processes the area to volume ratio is high. In summary they may be divided into the following categories.