HCDX-M360 Industrial Demagnetizer for Metal Parts with Conveyor Belt AC Demagnetization

HCDX-M360 Industrial Demagnetizer for Metal Parts with Conveyor Belt AC Demagnetization

I. Reasons for Demagnetization

Before the assembly of parts into the final components, demagnetization is often necessary. Highly magnetized parts can generate an additional magnetic field, which can cause various problems, such as:

Residual magnetism can affect the working accuracy and functionality of certain instruments and meters;

The metal powder adsorbed by residual magnetism accelerates the wear of moving parts during future use, leading to early failure;

The metal powder adsorbed by residual magnetism can affect the processing quality in subsequent processes, such as mechanical processing and surface coating;

Residual magnetism can cause chips to adhere to the surface, damaging surface accuracy and causing tool dulling;

The presence of residual magnetism can cause arc deviation or leakage, affecting welding quality, etc.

II. Demagnetization Principle

The metal becomes magnetized due to the linear arrangement of positive and negative polarities of its atomic structure. Demagnetization is carried out to eliminate the consistency of this atomic polarity orientation and reduce the magnetic property to an acceptable level. This is the purpose of demagnetization. While reducing the magnetic field, changing the direction of the magnetic field helps to reduce this consistency of atomic polarity orientation. This is the principle for designing demagnetization equipment.

Place the metal parts in the coil and supply the coil with an alternating current that rapidly changes direction (50Hz). When the coil is still in the energized state and the metal parts are gradually moved out of the coil through the conveyor belt, the induced magnetism will gradually decrease, thereby disrupting the orderly arrangement of magnetic domains in the metal parts due to magnetization, and making the metal parts non-magnetic to the outside.

III. Main Technical Specifications

IV. Usage Instructions

1. Configuration of the power supply inlet

① The power wiring must use insulated copper conductors with a cross-sectional area of ≥ 4mm², and be connected to the main terminal of the circuit breaker in the electrical box at the U, V, and W ports (the W port can use 2.5mm²); the protective grounding wire should be connected to the grounding bolt outside the control box using a 2.5mm² cross-sectional area copper conductor;

② The incoming power supply needs to be equipped with an air switch with a rated current capacity of 40A to 50A;

③ After properly connecting the power inlet (and also connecting the reliable grounding wire), close the power inlet; push the handle of the circuit breaker on the box door to the ON position, close all small circuit breakers, and the white [Power Input] indicator light on the operation panel will light up to indicate.

④ Press the green button switch on the start button box of the demagnetizer, and the conveying belt starts to operate, while the demagnetizing coil is energized; the yellow [Demagnetization in Progress] indicator light on the operation panel will light up; it is necessary to pay attention that the movement direction of the conveying belt is the same as the direction indicated on the guard plate. If not, please change the phase sequence connected to the motor port.

⑤ Press the red button switch on the start button box of the demagnetizer or press the red mushroom-shaped stop button switch on the end button box of the demagnetizer to stop the operation of the conveying belt and the demagnetizing coil.

At an appropriate position of the demagnetizer terminal, an optical sensor is installed. As long as an object blocks the light path of the optical switch, the conveying belt and the demagnetizing coil will stop working.

2. Demagnetization operation

① Close the power inlet power supply;

② Press the green button switch on the start button box of the demagnetizer, and the conveying belt starts to operate, while the demagnetizing coil is energized;

③ Place the part to be demagnetized on the conveying belt at the start position of the demagnetizer;

④ After the parts on the conveying belt slowly pass through the demagnetizing coil to the end of the demagnetizer,

(1) If the optical sensor is working normally, when the part reaches the sensor's light path, the conveying belt and the demagnetizing coil will stop working, and the parts will be removed after the machine stops.

(2) If the optical sensor has a fault, the parts can be removed in the direction further away from the demagnetizing coil; if no further demagnetization operation is needed, press the red emergency stop button switch on the end button box or the red button switch on the start button box of the demagnetizer. You can also remove the parts after the machine stops.

For short parts - the distance from the near end face of the part to the end face of the demagnetizing coil is > 800mm

Take the parts directly from the conveying belt.

For long parts - the distance from the near end face of the part to the end face of the demagnetizing coil is < 800mm

Take the parts from the conveying belt, and move the parts in a straight line along the direction of the conveying belt away from the demagnetizing coil before placing them.

Generally, the demagnetization process of the parts is completed.

V. Methods for Improving Demagnetization Effect

1. Try to demagnetize each individual part (with a certain length) as much as possible.

2. When demagnetizing short and thick or spherical parts, connect several parts end to end for easier demagnetization.

3. If the single demagnetization does not meet the requirements, repeating the demagnetization process is necessary.

4. For complex-shaped parts, rotate or flip them when passing through the demagnetization coil.

5. Try to remove the parts while the demagnetization coil is energized, and move the parts in a straight line along the transportation direction until they are far away from the demagnetization coil before placing them. This method is particularly necessary and important for parts with a length of ≥ 1,000mm.

VI. Notes

1. This machine must be properly connected to a reliable grounding wire for safety!

2. The demagnetization coil should not be operated continuously for a long time. The continuous operation time should not exceed 6 to 8 minutes. If the demagnetization coil gets extremely hot, the machine will enter a shutdown and standby state, and the red "Overheating Protection" indicator light on the operation panel will light up. The machine must be cooled down before it can be operated again!

3. If you need to adjust the moving speed of the engineering belt, it must be done while the motor is running: There is a regulating disc on the motor reducer, and the direction of the "Fast" arrow on the disc should be adjusted to accelerate, and the direction of the "Slow" arrow on the disc should be adjusted to decelerate.

4. The parts must be removed from the conveying flat belt only when they reach the terminal of the demagnetization machine.

5. The demagnetized parts must be placed away from the demagnetization coil!

6. When performing demagnetization operations, do not wear mechanical watches as it may cause inaccurate timekeeping in the future.