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

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, br

Seamless tubing

  • Inspection: Encircling coil for full-body inspection. For a more thorough inspection, a rotating system is used simultaneously for identifying longitudinal grooves.
  • Production typ

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

Hot rolled copper rod

  • Ferrous inclusion detection: A specially designed FERROCHEK module detects ferrous inclusions in the copper
  • Rolling defect detection: Simultaneous identification of laps, crac