Magnetic Particle Test Pieces

Magnaflux Magnetic Particle Test Pieces are essential NDT accessories for verifying magnetic particle performance and maintaining quality control in magnetic particle inspection (MPI) processes. The comprehensive product line includes Magnetic Flux Indicators with precision-milled slots, Quantitative Quality Indicators (QQI) test piece shims featuring artificial defects for field verification, Tool Steel Rings with pre-drilled holes simulating subsurface discontinuities, and Magnetic Particle Test Bars containing surface and subsurface defects. These test pieces help check for mag particle deterioration, compare different magnetic powders, verify sensitivity or visibility and assure field direction and strength, making them critical tools for professionals conducting non-destructive testing on ferrous materials.

Magnaflux Magnetic Particle Test Pieces

Overview

Magnaflux magnetic particle test pieces are designed to help maintain magnetic particle inspection processes by verifying magnetic particle performance. They serve multiple purposes including checking for particle deterioration, comparing different magnetic powders, verifying sensitivity or visibility, and assuring proper field direction and strength.

Product Categories

1. Magnetic Flux Indicators

  • Design: Flexible indicators for detecting directional orientation during magnetic particle testing
  • Construction: Made from permeable magnetic steel sandwiched between two brass plates
  • Specifications: Contains three milled slots with precise widths:
    • 0.0075 inches
    • 0.009 inches
    • 0.010 inches
  • Features: All slots share a common depth and are designed for repeated use
  • Applications: Suitable for both wet and dry MPI applications for setting and monitoring magnetic field strength

2. Quantitative Quality Indicators (QQI)

QQI test piece shims feature artificial defects to verify field direction and relative strength. They're packaged in sets of five and available in multiple configurations:

Part Number Product Name Description
631590 CX-230 Thickness: 0.002 inch (0.05 mm)
Notch flaw depth: 30% of shim thickness
631591 CX-430 Thickness: 0.004 inch (0.10 mm)
Notch flaw depth: 30% of shim thickness
631592 CX4-230 Features four circle-cross notch patterns
User cuts into four separate shims
Thickness: 0.002 inch (0.05 mm)
Notch flaw depth: 30% of shim thickness

Key Benefits: QQIs help balance multi-directional fields and increase productivity by minimizing magnetizing shots.

3. Tool Steel Ring (AS-5282)

  • Former Name: Previously known as Ketos Ring
  • Design: Pre-drilled holes simulate subsurface discontinuities
  • Purpose: Provides reliable verification of magnetic particle system performance
  • Use Case: Ideal when actual test parts with discontinuities are not available

4. Magnetic Particle Test Bar

  • Defect Types: Contains both coarse and fine surface and subsurface defects
  • Directionality: Defects oriented in both directions
  • Standards Compliance: Meets or exceeds most industrial and military standards for artificial test specimens

Conclusion

These test pieces collectively provide comprehensive solutions for validating magnetic particle inspection systems across various industrial applications and standards requirements.