Sheet metal molding with flexible elastomeric matrix

Elastoforming is a technology for working sheet metal widely used in aeronautics applications where for safety reasons technical regulations do not allow the forming of sheet metal by a die in which the punch and matrix are also metal.

The elastoplastic molding technology, indeed, allows to obtain molded components due to the pressure exerted on the die against an flexible elastimeric matrix (made of rubber or polymers). Our large press with a force of 6000 tonnes is also suitable for sheet metal elastoforming.This method eliminates the usual stress on the metal, caused by traditional molding process, and enables the easy duplication of the pieces, while maintaining the reduced cost and a limited numbers of tools. It’s estimated that the elastoforming guarantees a reduction of up to 50% of investments for dies, with a higher surface and dimensional quality of the product.

Elastoforming process

How the elastoforming works

  • Placing the sheet metal between the die and the flexible elastomeric matrix
  • Thrusting the sheet metal against the elastomeric matrix
  • The sheet metal is further pushed against the rubber which impresses the required shape

Advantages of elastoplastic molding technology:

For the product:

  • Absence of the typical strain of conventional process, due to concentrated stretching points (on corners, bending radii)
  • High precision in terms of constant thickness

For the process:

  • Excellent repeatability of the parts produced
  • Simple economical tools
  • Reasonable production costs

Elastoforming also allows a different approach to the conventional product development: why I should cut, bend, weld (and brush in the case of stainless steel) when a press machine can do it all, with a minimum outlay for a die?

 
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