Inspection of ball pivots/globe joints
Ball pivots are manufactured in a wide range of sizes and materials both as standard components (e. g. DIN 71803) and as customized parts in special sizes and materials. Globe joints are crucial to the safety when used as components in axles and steering.
Areas of inspection:
Ball, cone, shaft, collar, drive fit
Solution:
Automated eddy current inspection in one or more test stations using tools for 5 different ball pivots
Probe types:
KDS-2, differential system shielded
KDA-38, differential system with distance compensation
Frequency:
Medium frequency range
Defect size:
• Groove: 5 mm x 0.1 mm x 0.1 mm (L x W x D)
• Groove: 3 mm x 0.1 mm x 0.1 mm (L x W x D)
Cycle time:
- 5 sec/part with 100 % of the ball, collar and shaft being inspected
- Change-over time approx. 15 minutes
Probe data KDA-38
Application:
Dynamic crack detection, superficial cracks, dependent on the direction of the inspection, with distance compensation to suppress variations of the distance
Coil system:
Differential ferrite core, transformer, with distance compensation, magnetically shielded
Frequency range: 50 kHz - 1 MHz
Active area: approx. 2 mm
Penetration depth: low
Technical data:
Housing: metal (stainless steel)
Design: customized
Connection: customized
Probe data KDS-2
Application:
Dynamic crack detection, superficial cracks, dependent on the direction of the inspection, without influence by the edges, suppression of variations of the permeability in the upper frequency range
Coil system:
Differential ferrite core, transformer, with distance compensation, magnetically shielded
Frequency range: 500 kHz - 8 MHz
Active area: approx. 1.5 mm
Penetration depth: low
Technical data:
Housing: metal (stainless steel)
Design: customized
Connection: customized
ELOTEST PL500 test instrument
Application: Eddy current test instrument for the inspection during production; fastest material sorting and high-resolution crack detection; extremely fast due to 100 kHz bandwidth for the test signal; extremely low-noise and stable due to fully digitized signal processing; extremely flexible for up to 256 test channels;
Frequency range: 10 Hz – 12 MHz
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