Fluorescent magnetic particle inspection machine

Fluorescent magnetic particle inspection machine 

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.

How it works: The part is magnetized. If there is a crack or flaw, a "leakage field" is created. Fluorescent magnetic particles are applied, which gather at these leakage fields. Under UV light (black light), these particles glow brightly, making defects visible .
· Target Flaws: It identifies cracks, seams, inclusions, laps, and other fine defects caused by fatigue, heat treatment, forging, casting, or machining .

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

3. Device description

3.1 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.

3.2 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.

3.3 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.

4. 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.

5. Other

5.1 Installation and debugging

5.1 Quality assurance and after-sales service

5.1.1 All components and raw materials of the equipment shall be purchased through strict screening and certification to ensure that they are produced by regular manufacturers.

5.1.2 All self-made parts shall be made of qualified materials in strict accordance with the design process requirements.

9.1.3 The warranty period shall be 12 months from the date when the qualified Acceptance Report is signed by both parties, and the service shall be for life.

5.2 Packing and transportation

5.2.1 Packing Cases should be packed in strict accordance with standard specifications.

5.2.2 Packaging and transportation expenses, transportation expenses and transportation insurance premiums shall be borne by the Demander in accordance with national standards, while packaging expenses shall be borne by the Supplier.

6. Configuration table:

Vertical magnetizing mechanism (gear detection)    1 set

Horizontal magnetizing mechanism (gear shaft and small parts detection)    1 set

Magnetized power supply (power control cabinet)    1 set

Darkroom    2 sets

Fluorescent magnetic powder   1 can

Standard test film   1 set

Residual  magnetometer  1set

Foot switch   1 set

Hanging UV lamp   1 set

Handheld UV lamp   1 set