Reducing / Expanding

During the forming procedure the tube is clamped axially by at least two clamping jaws. A guided reducing or expanding tool is pushed in / on the tube and consequently expands / reduces the part in this way. 

 


Airbag Vessel

Ø 30 x 1.9 mm

  • Airbag vessel for side airbag
  • Operating pressure: 600bar / 8700 psi
  • Diameter reduced on both sides by reducing process (cold forming)
  • Bottom closed by flow forming process
  • Machined on both sides
  • 100% inspection of all parts
  • Poka Yoke inspection system
Airbag Vessel

Scaffolding Support

 

 

Ø 50 x  2.3 mm

 

  • Welded tube without an inner trimmed weld
  • Diameter reduced on both sides to Ø 93.3mm (cold forming)
  • Forming length on both sides: ca. 310mm
  • Reducing by more than 20%
Scaffolding Support

OCTG Casing

Ø 14" x 20 mm

  • Conically expanded by cold forming
OCTG Casing 14"

OCTG Casing

Ø 16" x 14 mm

  • Conically expanded by cold forming
OCTG Casing 16"

OCTG Casing

Ø 16" x 17.5 mm

  • Conically expanded by cold forming
OCTG Casing 16"

OCTG Casing

Ø 13.3/8" x 22 mm

  • Conically expanded by cold forming
OCTG Casing 13 3/8"

OCTG Casing

Ø 18.5/8" x 20 mm

  • Conically expanded by cold forming
OCTG Casing 18 5/8"

Steering Column

 

 

Ø 50 x 2 mm

 

  • Reduced on one side to Ø 47 mm
Steering Column

Steering Column

 

 

Ø 50 x 2 mm

 

  • expanded on one side to Ø 53 mm

Steering Column

Drawing Tag

Ø 2" – 7"

  • Wall thicknesses: 4.0 - 12.7mm
  • Tensile strength: 550 - 950N/mm²
  • Diameter reduced on one side (cold forming)
  • Max. forming length: ca. 500mm
  • Max. reduction: ca. 38% - 45% (based on material grade)
Drawing Tag

Drawing Tag

Ø 2" – 7"

  • Wall thicknesses: 4.0 - 12.7
  • Tensile strength: 550 - 950N/mm²
  • Diameter reduced on one side (cold forming)
  • Max. forming length: ca. 500mm
  • Max. reduction: ca. 38% - 45% (based on material grade)
Drawing Tag

Truck Tie Rod

 

 

Ø 50 x 4.8 mm

 

  • reduced on one side to Ø 42 mm
Truck Tie Rod

Truck Tie Rod

Ø 60 x 5 mm

  • reduced on one side to Ø 48 mm
Truck Tie Rod

Advantages of reducing / expanding

 

 

  • Weight reduction: The reducing / expanding technology offers the possibility to define a specific wall thickness distribution, especially when it comes to weight-critical parts e.g. in cars. The reducing operation is usually a cheaper alternative compared to the swaging.
  • Safety: Parts, which are produced by reducing / expanding, do generally present a more homogenous fiber flow. Based on the uninterrupted fiber flow, parts can be exposed to higher forces in comparison to parts, which are produced by machining.

  • Quantity reduction of single components: Products, which were welded together out of several single components until today, can now be formed out of one single semifinished part. This results in a tremendous cost reduction for stock-keeping and provisioning of single components.

Fields of Application

Most interesting applications for this forming technology:

  • Airbag vessels
  • Shock absorber tubes
  • Servo steering cylinders
  • Chassis parts
  • Steering columns
  • Calibration of tube ends
  • Drawing tags
  • Furniture tubes
  • Scaffolding tubes
  • and many more…

EFS Euro Forming Services GmbH

 

 

Lilienthalstraße 9
D-54634 Bitburg / Germany

Telephone: +49 (0) 6561 / 9473-0
Telefax: +49 (0) 6561 / 9473-70

E-Mail: info@euro-forming.de

Contact Us

You require further information or have questions? Please send us an email or contact us by filling in below form. We are looking forward to get back to you immediately. 

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