Eddy Current Component Testing Machine

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Material evaluation based on magnetic properties

Magnetic values such as coercivity HCJ correlate with numerous important process parameters and material properties in the production of sintered hard metals and powder-metallurgical components. The KOERZIMAT 1.097 HCJ measuring system by FOERSTER facilitates the accurate, automatic, and fast measurement of the coercivity HCJ. The largely geometry-free measurement is particularly suitable for testing samples with complex shapes. The extension module J-H measurement offers the possibility to determine the complete J-H Hysteresis on soft magnetic steel incl. the initial curve.

The applications of the KOERZIMAT include the control of the sintering level and particle size of hard metals and the quality control of metallic powders for the production of magnets and hard metals. The unit can also be used for monitoring the quality of the annealing and the mechanical stress state of soft-magnetic components (SMC) and for controlling electromechanical components in the electronics, automotive, computer, and clock sectors.

Your advantages at a glance:

•          Determination of coercivity in accordance with IEC 60404-7

•          Determination of hysteresis J(H) for soft magnetic steel bars

•          Determination of relative permeability µr(H) for soft magnetic steel bars

•          PC-controlled measuring system

•          Geometry-free measurement

•          Lightweight, extremely compact design

•          Software for controlling individual and series measurements

•          Database for collecting measurement data and parameter sets

•          Customer-specific reports

•          Remote port for automation, data access, etc.

Technical Data:

KOERZIMAT 1.097 HCJ/J-H

Measurement range:  HCJ           0 – 100 kA/m

µr(H)     100 – 2500

Magnetization field strength: up to 450 kA/m

Homogenous field area:         170 x 40 mm (LxD), coil 40

120 x 60 mm (LxD), coil 60

Measurement uncertainty:    1 % of measured value

Sensor elements:        Foerster probes (fluxgates)

Power supply: 100 – 240 VAC, 50/60 Hz

Norms:

ASTM B887

Describes the method for determining the coercitivity of sintered hard metals.

EN IEC 60404-7:2020

Describes the determination of the Coercitivity in the open magnetic circuit. Method B described above is advantageous as it provides the option to perform measurements regardless of the geometry of the sample. It is not required to manufacture special measuring samples

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Effective demagnetization via the pulse method

Magnetized components can lead to interference signals during crack or microstructure testing with eddy current component conditions, therefore resulting in false readings.

To avoid this, FOERSTER offer a powerful demagnetization unit: the ZMAG CM. The pulse method used enables high penetration depth to demagnetize the components effectively and promptly. The Siemens control and pre-configuration allows an easy integration of the unit into your production process. Thus, your process quality and reliability can be significantly increased.

Your advantages at a glance

•                Flexible spool size: There are four spool sizes available with 30/75/110/220 mm. Other sizes on request.

•                It can be automated: I / O interface for control available. Alternatively, manual operation is possible.

•                Plug & Play: Pre-configured degaussing: You don't have to set anything; you can start right away.

•                High demagnetization performance: Powerful pulse shape for effective demagnetization.

•                Pulse method: The pulse method allows a greater penetration of the component than at a constant frequency.

Applications:

1.              Elimination of misinterpretations

2.              False signals during microstructure testing

3.              Magnetic particle testing

4.              Magnetic adhesion of metal chips

5.              Coating processes

6.              Compliance with manufacturing standards  

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• Alloy Composition
• Heat treatment
• Grain Structure
• Hardness
• Case Depth
• Dimensional and Geometrical Differences

• PC controlled electromagnetic test electronics for fully automated and rapid testing of every individual component produced (can also be employed manually and offline)

Additional Information:

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MAGNATEST ECM is the line-ready compact module for simple testing tasks. The unit simply and reliably performs testing tasks such as material mix and deviation measurements as well as deviations in surface hardness and case-hardening depth. MAGNATEST ECM is designed to be used as the core component in quality assurance systems during series production and for installation in production systems. It is particularly suitable for applications that primarily focus on profitability and less on multiple functions.

• Low-cost eddy-current module for non-destructive testing using the magneto-inductive method.
• Genuine magneto-inductive testing by evaluation of harmonics.
• Test parameters variable over wide ranges.
• Simple operation.
• Test pieces sorted in two groups: o.k. / n.o.k.
• One-dimensional display of measured value by LED bar graph.
• Key-operated switch for locking operating functions.

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Material evaluation based on magnetic properties

MS Magnetic values such as weight-specific saturation polarization σs and volume-specific saturation polarization Js correlate with numerous important process parameters and material properties in the production of sintered hard metals and powder-metallurgical components.

The KOERZIMAT 1.097 measuring system by FOERSTER facilitates the accurate, automatic, and fast measurement of the weight-specific saturation polarization σs and volume-specific saturation polarization Js. The largely geometry-free measurement is particularly suitable for testing samples with complex shapes. The KOERZIMAT 1.097 MS is used for applications such as controlling the sintering level during hard metal sintering processes and determining the tungsten content dissolved in cobalt as well as the free iron, cobalt, and nickel content in powder / hard metals. The saturation polarization Js in Tesla can also be determined in soft magnetic components of magnetic circuits.

Your advantages at a glance:

•          Determination of the saturation magnetism in accordance with IEC 60404-14

•          Determination of the magnetic phase in austenitic steel

•          PC-controlled measuring system

•          Geometry-free measurement

•          Lightweight, extremely compact design

•          Software for controlling individual and series measurements

•          Database for collecting measurement data and parameter sets

•          Customer-specific reports

•          Remote port for automation, data access, etc.

Technical Data

Sensitivity:      2*10-8 Tm3/kg (MS 26 x 60)

1*10-7 Tm3/kg (MS 31 x 69)

Field strength in the air gap:  1.15 T

Measurement uncertainty     0.5 % of measured value

Sensor element:          Helmholtz detection coils with fluxmeter

Power supply: 100 – 240 VAC, 50/60 Hz

Compressed-air supply:          6 bar (MS 31 x 69)

Norms

ASTM B886

Describes the method for determining the saturation magnetism of sintered hard metals.

IEC 60404-14

Describes the determination of the magnetic saturation dipole moment jS using moment coils in open magnetic circuits. The method described above is advantageous as it provides the option to perform measurements regardless of the geometry of the sample. It is not required to manufacture special measuring samples.

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Additional Information:

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• Intelligent filter algorithms for targeted suppression of interfering contours like drill holes, grooves, bevels, etc.
• High-resolution representation of the component surface
• Digital filters with large dynamic range
• Post-data analysis for process improvement, since raw data can be stored and post-processed
• Report creation in PDF, PNG and CSV formats