• Bilstein & Siekermann GmbH + Co.KG
  • Industriestraße 1
    54576 Hillesheim,
  • +49 6593 9862–0
  • +49 6593 9862–34

Location China

  • Bilstein & Siekermann Cold Forming (Taicang) Co., Ltd.
  • Building 6, No.188, East Guangzhou Rd.
    Taicang City, 215413
    Jiangsu Province, PR China
  • +86 512 5367 9774
  • +86 512 5367 9765

New possibilities for the automotive lndustry - HEATforming™

Heatforming expands the possibilities of metal forming providing expansion ratios over 200% with wall thickness control and augmentation.

Designers and process engineers are no langer constrained by the forming limits, material choices, wall thickness minimums, or cycle times of typical processing like hydro forming, casting, or superplastic forming.

Choose the materials you want based on product performance rather than manufacturing constraints. Integrate more com­plex features into single parts to reduce process steps, reduce manufacturing cost, and increase quality and durability.

From ultra thin wall (0.5mm) to thick wall (10mm and up), HEATforming is suitable for all Aluminum alloys. HEATforming can help you create products more efficiently.

Further information can be found on the website of our cooperation partner:

Advantages of HEATforming™

Extreme expansion ratios without thinning allow a new freedom in design metals

  • Cold forming properties of the raw material no longer limit production
  • Sharp corner radii and edges are possible regardless of alloy
  • Integrate mounting surfaces and additional functional features easily
  • Excellent dimensional fidelity and wall thickness control
  • Ability to form high range of wall thicknesses, 0.5mm to 10mm wall and more
  • Affordable tooling is suitable for low and high volume products
  • Avoids metallurgical effects (like grain boundary growth) of casting and other high heat processes
  • Combines processing steps - Reduces production costs
  • Reduces raw material consumption and scrap
  • Previously difficult or impossible to form products and blanks are now possible
  • High strength aluminium alloys are limited to approximately 15% elongonation in cold Hydroforming and often require annealing
  • HEATforming allows elongations above 200%
  • Tooling is approximately 50% less expensive than Hydroforming
  • Can utilize cost effective hollow extrusions in T6 condition
  • Post heat treatment is not required in most cases

    The Process

    Step 1

    The preheated tubular blank is placed in the preheated tool. Both ends are then sealed.

    Step 2

    The tubular blank is pressurized and material feeding starts.

    Step 3

    The tube is formed by application of inner pressure and simultaneous feeding of material.

    Step 4

    The final geometry is formed with an increase of inner pressure.

    Application examples