Magnetic Test Block MTU-3

Magnetic Test Block MTU-3 is used for:

– quality comparison of different magnetic powders (particle solutions);
– quality assurance of magnetic powders while working with the testing bench;
– for quality analysis during the magnetic particle testing, also to check the correct dosing of magnetic powder in automatic testing.

MTU Test Block #3

The MTU test block #3 (is the reference block type 1 according to EN ISO 9934-2) is used to verify the indication sensitivity of magnetic particle crack detection agents.

The test block is a disk with two types (large and small) of natural cracks (in both sides).

The large cracks are sanding cracks and the small cracks are tension cracks.

The test block has been magnetized by use of the hole in the middle of the test block. The analys of the test block is made by comparison of the picture with the results of the test block with fluorescent magnetic powder and ultraviolet lamp.

Advantages

High precision: Engineered with precise defects to ensure accurate calibration and sensitivity testing.
Reliable performance: Essential for ensuring consistent, reliable results in magnetic particle inspections.
Comprehensive quality control: Facilitates thorough quality control processes, ensuring your testing equipment and materials meet industry standards.

Specifications

Shape	disc
Material	steel
Dimensions	diameter – 50 mm- thick -11 mm diameter of center hole – 10.5 mm
Preparing of material	90MnCrV8; surfaces grinded on 9,7 ± 0,05 mm
Hardening of material	860 °C to 2 hours- dipped in oil hardness – 63 to 70 HRC
Grinding cracks	speedness 35 m/s grain 46J7 delivery 0,05 mm cross feed 2,0 mm
Corrosion cracks	black heated at 145°C to 150 °C for 1,5 hours
Magnetisation	central ladder, direct current I = 1 kA (peek)