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Pie Gauge Octagonal Magnetic Field Indicator

Categories Magnetic Particle Testing
Brand Name: TESTECH
Model Number: Pie Gauge
Certification: CE; ISO
Place of Origin: CHINA
MOQ: 1 pcs
Payment Terms: T/T,Western Union,PayPal
Supply Ability: 500 pcs
Delivery Time: within 5 days
Packaging Details: In Carton
Product Type:: NDT Testing Tool
Application:: Magnetic Particle Testing (MT)
Shape:: Octagonal / Pie Shape
Standard:: ASTM E709, ASTM E1444, ASME V
Function:: Check magnetic field direction & magnetization effect
Usage:: Industrial non-destructive testing
Company Info.
Testech Group Co., Ltd
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Pie Gauge Octagonal Magnetic Field Indicator

Pie Gauge Octagonal Magnetic Field Indicator

The Pie Gauge is a specialized tool for Magnetic Particle Testing (MT), primarily used to verify magnetic field direction and magnetization effectiveness in industrial inspection applications.

Core Definition and Usage

Full Name: Pie Gauge / Magnetic Pie Field Indicator
Primary Usage: Quickly confirms magnetic field direction on workpiece surfaces, determines magnetizing current adequacy, and verifies magnetic powder application effectiveness.

Working Principle

The octagonal low-retentivity steel sheet features eight fan-shaped sections separated by non-magnetic materials, creating radial artificial defects. When the magnetic field is perpendicular to these gaps, magnetic powder accumulates at the discontinuities, forming clear visual indications.

Technical Specifications
ShapeOctagonal (pie-shaped)
DimensionsApproximately 27mm diameter, 3-4mm thickness
Material CompositionLow-retentivity carbon steel with non-magnetic filler material (copper/brass), equipped with non-metallic handle
Compliance StandardsASTM E709, ASTM E1444, ASME Section V, MIL-STD-271
Operation Procedure
  1. Position the Pie Gauge flat on the magnetized area of the test piece
  2. Apply magnetizing current and spray or coat magnetic powder
  3. Observe results: Clear magnetic powder accumulation appears on fan-shaped gaps perpendicular to the magnetic field; no indication appears in parallel direction
  4. Interpret findings: Clear indications confirm qualified magnetic field direction and strength; absence of indications suggests insufficient magnetization or incorrect magnetic field direction
This precision magnetic field indicator ensures reliable verification of magnetization effectiveness for quality assurance in magnetic particle testing applications.
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