BC-A2/A2D/A2Lmagnetic powder/Magnetic yoke flaw detector

I. Overview

BCThe series of miniature magnetic yoke flaw detectors are lightweight and miniature magnetic particle flaw detection devices that use magnetic yokes to magnetize workpieces made of ferromagnetic materials. They can magnetize various parts and are suitable for industries such as oil fields, shipbuilding, internal combustion engine parts, coal mines, machinery, standard parts, oil pumps and nozzles, aircraft manufacturing, automotive parts, bridge construction, chemical industry, boiler pressure vessels, railways, etc. Surface and near surface defects caused by forging, quenching, welding, fatigue, etc., such as chain rods, crankshafts, bearings, high-strength bolts, springs, forgings, petrochemical pipe fittings, valves, blades, gears, rollers, anchor chains, and welds, which have complex geometric shapes.

BCThe series of miniature magnetic yoke flaw detectors includes AC, DC, and AC/DC dual-purpose magnetic particle flaw detectors. The DC power supply is rechargeable batteries, suitable for field operations without power supply and on-site operations in containers, bridges, pipelines, etc. where high voltage cannot enter. The continuous working time of one charge can reach more than 6 hours. The AC power supply adopts a~220V power supply for direct input, without the need for other instruments to be matched. It is easy to operate, simple, lightweight, and portable, so this instrument is widely used.

1 Technical Specifications

3、 Principles and Applications

1. Charging (charger, battery for BC-12/220, BC-12 use)

Connect the~220V power supply to the charger and connect it to the battery box plug. When charging, the charger's LED emits a red light, indicating that the battery is in the "fast charging" state. When the LED turns green, the battery reaches above 14 volts. If the battery is charged without consuming much, it may start with a period of time before turning from red to green and entering a "slow charging" state. Enter the slow charging charger to continue charging the battery, but the total charging time should not exceed 15 hours.

Note: Explanation of the improved charger.

2. Battery

The battery is the power supply for the probe. After starting to work, due to the continuous discharge of the battery, the lifting force will significantly decrease when under voltage (after 6 hours), and the battery needs to be charged.

3. Flaw detection

A：DC flaw detection (used for BC-12/220 BC-12)

⑴Connect the plug of the probe wire to the battery plug. At this time, the red light on the probe wire plug will light up, and the battery will supply power to the probe.

⑵During flaw detection, place the probe joint opening on the inspected workpiece to maintain good contact.

⑶Press the probe switch and spray magnetic powder or suspension onto the inspected area for 2-3 seconds.

⑷Release the probe switch, move the probe away, and observe the workpiece.

⑸Move the probe to another inspection area and repeat steps 3 and 4.

BCommunication testing (used for BC-12/220 BC-220)

⑴Insert the power input plug into a socket that requires a grounding wire to ensure good contact of the grounding wire.

⑵When conducting flaw detection, refer to DC flaw detection methods 3, 4, and 5.

4、 Maintenance and precautions:

1. When charging the charger, the charging time should not exceed 15 hours each time. After charging, the charger plug and battery plug should be removed to avoid power backflow.

2. When the battery is under voltage, charge it as soon as possible to protect its good storage performance.

3. When the instrument is not used for a long time, the battery should be charged every 2-3 months to avoid battery discharge and affect the battery's service life and continuous working time.

4. When the probe is working, the power on time is generally 2-3 seconds, and the longest should not exceed 5 seconds, with an interval of 3-5 seconds.

5. When using water-based magnetic suspension, an appropriate amount of rust inhibitor should be added.

6. Before using the probe, add an appropriate amount of oil to lubricate the active joint. After use, wipe off any water, oil, magnetic particles, etc. on the probe and active joint, and apply rust proof oil.

7. When using AC flaw detection, the power supply inserted must comply with the instrument's specified power supply and have good grounding.

8. When in use, the movement of the probe should be carried out after releasing the probe switch to avoid open circuit operation and instrument heating.

9. If the flaw detector is powered on for a long time and there is obvious heating, it should be rested appropriately before being put back into use.

10. Do not use blindly, do not approach high temperature and high humidity places. Do not work in the rain, and do not spray magnetic suspension onto switches or plug sockets.

5、 Instrument completeness