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.

Reated Projects

Offline testing

  • Offline inspection: Final inspection of cut-to-length tubes, e.g. after drawing to precise diameter (precision tubes)
  • Conveyors: PR??FTECHNIK also provides conveyor systems f

Double-wall brazed tubing

  • Detects critical defects: Finds typical processing defects such as flaws in the inner and outer seam, copper spots and runs
  • Inline inspection: Immediate test results and feed

Inline testing

  • Input control: Identification of bad quality material, e.g. rolled wire (drawing lines for thick wire), bar, tube or pipe
  • Quality control: Detection of defective areas in tes

Thick material inspection (TMI)

Application fields

  • Production type: thick-walled tubes with a longitudinal weld seam; welded seams can be tested in their full thickness
  • Materials: austenitic steel, aluminum,