Application / Cold heading machines


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About Cold heading machines

In the manufacture of small parts using cross-cutting or cold heading machines, high scrap rates often result from defective starting material. Testing the initial material and cutting out the defective sections of wire only leads to multiple short coils that increase changeover times and production costs for the parts manufacturer. Instead, the solution is to inspect the wire immediately before it is cut into small parts. Defective or unfinished parts are then automatically sorted as scrap and are not processed further.Thus, excessive costs of pre-tested initial material can be avoided.

Testing procedure

  1. The incoming material is tested for defects by an encircling coil.
  2. EDDYCHEK 5 evaluates the defects it finds and registers their position
  3. A signal is sent to EDDYCHEK 5 every time a piece is cropped. This way EDDYCHEK 5 tracks the occurrence through the machine in piece-part increments.
  4. EDDYCHEK 5 recognizes when a defective part reaches the forming exit.
  5. EDDYCHEK 5 then sends a sort signal to the reject mechanism to divert individual parts into a scrap bucket.

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Compound tubing

  • Inspection: Identification of weld seam defects in the internal metal layer of compound tubing
  • Diameter: 10-60 mm (0.4-2.4 in)
To guarantee a

Multivoid tubing

Air conditioner tubing is inspected inline after extrusion. An encircling coil tests for outer surface defects and checks that the walls of the interior chambers are intact. It is spec

Continuous drawing line

  • Input control: Identification of bad quality rolled wire (drawing lines for thick wire)
  • Process control: Monitoring of production lines to avoid scrap (medium and fine drawing blocks)<

Full-body inspection/Leakage testing

  • Internationally recognized test standards: Leakage testing according to SEP, DIN, ASTM, API, BS, JIS, ETTC, ENEL and others
  • Inspection: Full-body inspection using encircling