Magnetic test

Read 49  ·  Release Date 2018-11-01 16:50:28  ·  guanliyuan

Ⅰ. Test of magnetic performance

1. Test of magnetic performance

Test item:Br,Hcb,Hcj,(BH)max,Hk,Ms,μrec, Hk/ Hcj, etc.

Test device: Magnetic hysteresis loops measuring apparatus

Test range:Hcj 50~20,000 Oe

2. Magnetic performance in high and low temperature

Test item: Magnetic performance in various high and low temperature environment

Test device: High-low temperature tester

Test range:-40 to 130℃

3. Reversible temperature coefficient

Test item: Temperature coefficient and calculation expectation

Test device:High-low temperature tester

Test range:Set the range of temperature

4. Magnetic field waveform distribution

Test item:Data of magnetic field waveform plane and rotation waveform output

Test device:Waveform tester

Test range:Magnetic material that the volume is close to 0.03 m³

5. Magnetic-flux measurement

Test item:Magnetic moment, magnetic field output, anisotropic magnetic field and orientation angle error

Test device: Diverse helmholtz coils

Advantages of device:Highly flexible portable device, highly efficient automation test system

6. Gauss value

Test item: Surface Gaussian value at a specific location

Test device: Gauss meter, C type jig, yoke or customer-specific work clothes

Test range: The fixed point measurement at specified or specific location

Ⅱ. Physical and corrosion resistance testing capability

1. Salt spray

Test item:Corrosion resistance grade

Test device:Salt spraying tester

Advantages of device:Adopt ASTM B-117 standard, usually output failure time, and also provide pictures after experiment.

2. High temperature high humidity test

Test item:Temperature and humidity endurance test

Test device:Temperature and humidity tester

Test range:80~95℃, 90~100%RH. Generally, conduct trafficability test under 90℃ and 90%RH.

3. Vapor pressure, uncoated magnet

Test item:Vapor pressure test of uncoated magnetic material (PCT test)

Test device:PCT tester

Test range:Weightlessness within 96 hours (or adjusting according to customer needs) under 2 atmospheres, 150 ° C and 100% RH

4. Vapor pressure, coated magnet

Test item:Vapor pressure test of coated magnetic material (PCT test)

Test device:PCT tester

Test range: Overdue failure test under 2 atmospheres, 100% RH to high temperature and humidity

5. Physical strength

Test item: tensile strength, three-point yield strength, peeling test

Test device: Crushing strength tester

Test range: all types of magnetic materials can be tested (with special working clothes and jig)

6. Low zero-G test

Test item: low weight loss, coating adhesion

Test device: HAST tester

Test range: The passivated coating products under 2.5 atmospheres, 130 ° C and 100% RH