Eddy Current Component Testing Experts
248-478-9490

Eddy Current Crack Testing Systems - Spindles, Piston Rods, Rings

Spindles

Automatic crack and structure test of spindles with the 2-channel eddydector® and the eddyliner® P4

After hardening and grinding, the parts enter the test systems from the left on a roller conveyor.

Hardness

hardening depth at 4 positions

tempering of basic material

correct alloying

surface cracks

 

cycle time
: 525sec.
Crack Specification
depth
: 0.050mm
width
: 0.075mm
length
: 3.75mm

 

Orientation Longitudinal and Circumferential

In the crack detection station, the test parts is lifted up and set into rotation (approx. 600rpm).
The two crack detection probes scan the ground area of the spindle for very small cracks.
For structure test, the parts is lifted up into the red coil head and is tested for correct heat treatment at 4 position. Ok parts exit the system vie the top right roller conveyor, NOK parts exit the test system vie the bottom right roller conveyor.
Test electronics consist of an eddyliner® P4 for structure test and a 2-channel eddydector® for crack detection.
Piston Rods
Cycle Rate
: up to 20 parts/min
Parts Diameter
: 8 - 30mm
Length of parts
: 250 - 650mm
Depth
: 50mm
Length
: 5mm
Width
: 75mm
Direction
: longitudinal and   transverse

Automatic Crack detection of piston rods by means of eddydector® and eddyscan® H2/25

  • Crack Test system shown at left
  • Drawing shows part subject to crack and flaw testing
  • Entire cylindrical ground surface area is scanned
Very compact test system located on a steel frame containing both steel cabinets for crack detection electronics and control elements (PLC) as well as electrical system.
Careful and precise transport of parts by means of hardened and synchronously running V-rollers. Edge blanking done by reliable fork-type light barriers which are easily adjustable and oriented via a master piston rod.
Very compact test system located on a steel frame containing both steel cabinets for crack detection electronics and control elements (PLC) as well as electrical system.
Careful and precise transport of parts by means of hardened and synchronously running V-rollers. Edge blanking done by reliable fork-type light barriers which are easily adjustable and oriented via a master piston rod.
View of the drive unit and timing belt (protective cover removed).
Diameter adjustments are carried out by setting the rotating head, incl. crack and measurement scale, to the correct height and changing probe disk.
The piston rod is directed to the probe disk (without contact). protective cover for feed system removed.
Rotating head in maintenance position bypass operation possible.
Vanes guide not o.k. pats into a lockable rejected parts tray. Protective cover of ejector is open. Surveillance stop circuit for safe operation.
View of the ejector drive. In order to protect the plastic ejectors, a shearing pin limits the torque being transmitted by the universal joint.

Test system with switch cabinet, operating elements, crack detection instrument and printer to print test results. The mechanical module can be seen on the right side.

Cycle time: 6 seconds per part (600 parts per hour)

Bearing Rings

Automatic Crack Detection of Bearing Rings on Inner Diameter Using Single Channel eddydector®

  • Crack Test system shown at left
  • Photo shows bearing inner-ring tested for cracks at production-line speeds
  • System can test inner or outer races

Example parts tested have bore diameter of 30mm to 40mm.

Crack Specifications

Orientation:

Depth:

Width:

Length:

Longitudinal

0.100mm

0.050mm

3.00mm

The bearing rings are fed on a conveyor belt to the test system, individually clamped and rotated. A probe scans the inner diameter for cracks as per specification. Good parts are returned to the conveyor belt, bad parts are forwarded to a separate, locked chute
Test part in receptacle position in test station.
ibg NDT Systems has 30 years experience as a designer and manufacturer of state-of-the-art-non-destructive (NDT) eddy current testers, instruments, and systems for crack detection and flaw detection for automotive, bearing and other metal components including fastener, forged and cast parts, hard metals, precision stamped parts, etc.
ibg NDT Systems Corporation, 20793 Farmington Road, Farmington Hills, MI 48336
Phone: 248.478.9490, Fax: 248.478.9491
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