HMP-8000 Fluorescent Magnetic Particle Flaw Detection Machine Circumferential Current AC 0~8000A

1. Working principle

Magnetic particle detection uses the interaction between magnetic leakage field and magnetic powder at the defect of the workpiece. It takes advantage of the difference between the surface and near surface defects of iron and steel products (such as cracks, slag inclusion, hair lines, etc.) permeability and iron and steel permeability. After magnetization, the magnetic field at the discontinuous place of these materials will be distorted, forming part of the magnetic flux leakage and resulting in magnetic leakage field. Thus attracting magnetic powder to form the accumulation of magnetic powder at the defect - magnetic trace, under appropriate lighting conditions, showing the location and shape of the defect.

2. Usage

Fluorescent magnetic particle flaw detection machine is used to detect the surface and near surface of ferromagnetic workpiece (such as: gear, gear ring, gear shaft, etc.) due to forging, quenching, grinding, fatigue caused by cracks and slag inclusion and other fine defects.

3. Implementation standard

1. Magnetic particle flaw detector:GB/T8290—2011

2. Observation condition of magnetic particle flaw detection:GB/T 5097-2020/ ISO 3059:2012

3. American Society for Materials and Testing: Magnetic Particle Test Method ASTM E1444-01

4. European Union, International Standard: DIN EN ISO 9934-2-2003

4. Detection range

Gear ring type parts(1)

Gear shafts and small parts(2)

5. Detection technology

Gear parts (1) : feeding -- the cylinder will push the rotating disc (position 1) into place (position 2) -- spray magnetic suspension -- magnetization of the piercing rod -- rotation observation -- demagnetization – blanking

Gear shaft and small parts (2) : feeding -- spray magnetic suspension -- clamping magnetization -- rotation observation -- demagnetization -- blanking

6. Technical parameter

Detection range:Gear diameter≤700mm,height≤410mm；

Axial diameter≤300mm,Length＜700mm

Electrode spacing:0~410mm(adjustable)

Circumferential current:AC 0~8000A Effective value(With outage phase controller)

Longitudinal magnetic potential:AC 0~18000AT Effective value(With outage phase controller)

Detection method: fluorescent magnetic particle detection

Magnetization mode: circumferential magnetization, longitudinal magnetization, composite magnetization

Clamping mode: pneumatic clamping

Demagnetization effect: remanence less than 0.3mT

Detection sensitivity: A1 standard test film (15/50) clearly display

Power supply: three-phase five-wire AC 380V 50Hz

7. Device description

7.1 Electrical control system

The control system is based on programmable logic controller (PLC), which controls the operation of two electrodes and the magnetization demagnetization device. With the control cabinet as the main body, it contains various executive components, magnetization triggering circuit, main transformer, etc.

Input magnetizing current and other parameters through the touch screen. With PLC analog input/output module to achieve magnetization current preset function.

All indicators, buttons and working lights of the flaw detection host adopt 24V safety voltage.

The flaw detection host, demagnetizer and distribution cabinet shell are reliably grounded.

7.2 Host

Main machine: fuselage, stainless steel collection tank, magnetizer, spraying system.

Fuselage: Fuselage is welded by high quality material, strong and beautiful. There is no obvious sharp Angle structure within the height range of the operator around the fuselage.

Stainless Steel Collection tank: Made of high quality stainless steel for magnetic suspension collection.

Magnetizer: composed of clamping mechanism, magnetizing electrode and magnetizing coil. The magnetizing electrode magnetizes the workpiece circumferentially and the magnetizing coil magnetizes it longitudewise. The coil and electrode plate are made of high quality copper. The clamping mechanism is driven by pneumatic components, and the workpiece is clamped between two electrodes to form a circumferential magnetizing circuit.

7.3 Magnetic suspension spraying system

It is composed of magnetic suspension collecting tank, water pump, pipeline and sprinkler head. The collecting tank is responsible for collecting, stirring and pumping the reflow magnetic suspension to the nozzle. The liquid collecting tank is external, and the universal wheel with brake device is installed at the bottom. The magnetic suspension collection tank, observation platform and demagnetizing conveyor belt of the main engine are all recovered to the liquid collection tank to avoid dripping.

8. Main brand and supplier of electrical parts

All components and components of the equipment are imported or domestic famous brand products, homemade products have passed the quality test.