The characteristic wall thickness profile of a deep drawn component

Secondary ironing operations can create more consistent wall thicknesses.

Secondary ironing operations can create more consistent wall thicknesses. The wall thickness reduction is a function of the material.

Typical mouth profile

Component with a flange

Section showing a component with a clipped rim x (generally x = 0.1 to 0.2 mm depending on the material quality and thickness; down to x = 0.02 mm in certain cases.)

Clipped mouth profile : using a rotating tool part of the cup is taken off without a secondary machining operation.

Integrated stamping and marking

Axial and radial marking punches eliminate secondary machining operations.

Using cold working as a design benefit

During the deep drawing process the raw material is strengthened, depending on the starting material and degree of deformation. That can result in significantly higher strength characteristics. So if the design is right, deep drawing can save material and improve functional safety.

An example of an unalloyed steel - 1.0338

  • 25 x 35 mm / wall thickness 2mm
  • Raw material hardness 119 HV / tensile 385 N/mm2

An example of a chrome-nickel steel - 1.4301

  • dia. 20mm, wall thickness 0.3 mm
  • Starting material 180 HV / tensile 575 N/mm2

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