What's the difference between forming, bending and stretching? The change of die structure and strain is analyzed. Please analyze it in detail, thank you.

Forming is the local deformation of materials, and the stamping process that has changed the shape of parts or blanks is called forming, such as flanging and necking.

Bending is the stamping process of completing a certain angle or shape of material, which is called bending, such as bending and torsion.

Stretching is a stamping process that stretches a flat blank into a hollow shape or further stretches the size of a hollow part. There are continuous refinement stretching and refinement stretching.

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