Testing Wire/Rod


Eddy Current testing is generally the best choice to inspect wire in line with cold heading operations such as spring making and other parts forming, and for checking continuity, alloy and other conditions.  MAC instruments can handle a range of metal wire including cut lengths, continuous production, stranded, multi conductor and insulated cable. Carbon steels, stainless alloys, copper, aluminum, titanium and other non ferrous metals can be inspected.
Typical flaws and conditions that can be detected include:
  • Welds, Weld line faults, and Butt Welds
  • Short Surface & Subsurface Cracks
  • Continuous Surface or Subsurface Defects
  • Breaks in Wire Rope
  • Chevron cracks
  • Laps
  • Seams
  • Slivers
  • Continuity checking
  • Variations in heat treat, grade, alloy and hardness
  • Other flaws & conditions

Testing Wire

Testing Cold Drawn Wire MAC eddy current systems are available to test cold drawn wire, on a processing machine such as a bull block or cold header. Two methods are available, depending on the types of surface defects likely to occur. Encircling coils, including DC saturation on magnetic steel wire, are used to detect short defects, and rotating probes are used for longitudinal defects.  

Testing Fine Diameter Wire MAC has eddy current systems with specially designed small test coils that operate at very high frequencies for inspecting ultra small diameter, super conductor wire; tungsten filament wire, and other exotic alloy wire sometimes used in critical medical applications.

Inspecting Cold Drawn Wire on a Header

Testing Insulated Wire & Cable MAC eddy current systems for insulated wire and cable, such as multi conductor automotive and building wire, detect splices, welds and breaks at very high throughput speeds. Split coils are available to accommodate oversize splices.

Insulated multi conductor copper wire

Testing Small Diameter Wire for Longitudinal Defects at High Speeds MAC’s new Rotomac® HS high speed eddy current rotary is designed to detect longitudinal defects such as seams and laps in wire ranging from 2 to 20mm diameter. It can be installed in-line with straighteners, off-line in a separate station, and in continuous wire operations during drawing, spring-making and parts forming.
ROTOMAC® HS 20mm Rotary

ROTOMAC® HS 20mm Rotary


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