DEXINGMAG DXMM-20C80 Capacitive Magnetizer Machine User Manual

DEXINGMAG DXMM-20C80 Capacitive Magnetizer Machine

Specifications

• Model: DXMM-20C80
• Manufacturer: Dexing Magnet Tech. Co., Limited
• Usage: Magnetizing products made of permanent magnets
• Features: Low energy consumption, high efficiency, fast magnetization
• Magnetizing Time: 1.0-3.0 sec/time

Product Usage Instructions

Preparation before Operation

1. Connect the output cable and capacitance wire to the corresponding terminal tightly.
2. For multi-polar magnetized products, connect the cooling water route and pneumatic section before magnetizing.
3. Fix the power cable to a 220V power supply with an air switch of at least 40A rating.
4. Ensure the power supply wire is copper wire with 6-10 square millimetres.
5. Turn the charging voltage to the smallest setting (unless automatically set internally).

Magnetizing Process

• Trigger the foot switch after charging the capacitance to a certain set value for magnetization.

Shift of Magnetizing and Demagnetizing

• The terminal switch in the upper end is for demagnetizing.
• To shift during mid-time, turn down the voltage knob before shifting.

Safety Caution

• Avoid operating switches with wet hands.
• Do not damage or modify the power cable to prevent electric shock.
• Do not place heavy objects on the power cable or subject it to heat or stretching that may cause damage.
• Avoid opening the equipment or touching internal components; contact a professional service technician for repairs.

FAQ

• Q: Can I use the DXMM-20C80 magnetizer for all types of permanent magnets?
• A: Yes, the magnetizer can be used for magnetizing products made of various permanent magnets, including speakers, DC motors, DC fans, stepper motors, rubber magnets, and magnetic toys.
• Q: What should I do if there is a loss caused by an error during the magnetization process?
• A: If any loss is caused by an error during magnetization, the company is not responsible. It is important to verify the magnet polarity is correct before proceeding with magnetization.

Summary

• DXMM-20C80 magnetizer can be used for magnetizing products made of permanent magnets, such as speakers, DC motors, DC fans, stepper motors, rubber magnets and magnetic toys, with excellent performance of low energy consumption, high efficiency, and fast magnetization.

Constitution principle

• DXMM-20C80 magnetizer is composed of a high-pressure oil-immersed capacitor SCR (SCR) and control circuit.
• Rise the power supply voltage, and transform to DC through a rectifier to charge the capacitor.
• The high-voltage direct current energy stored in the capacitor, through control SCR, high-voltage energy discharges the magnetizing coil to generate a strong magnetic field to magnetize the magnet saturation.

Feature

1. Adopting the patent technology of energy recovery, low power consumption, high magnetizing efficiency and no need to cool down the coil;
2. Magnetizing time: 1.0-3.0 sec/time, the efficiency is 2 times the same level magnetizer.
3. Can work for a long time due to stable lines.

Technical parameters

1. Input power: AC220V ± 10%
2. Input current: about 40A
3. Charging voltage: 10V-2500V
4. Output current: maximum 30KA
5. Magnetizing time: 0.1-2 milliseconds (determined by the load)
6. Charging magnetizing interval: 0 -6.0 sec/time
7. Main control component: silicon-controlled rectifier (SCR)
8. Electric capacity: 8000uF
9. Biggest stored energy: 25KJ

Note

preparation before the operation

1. Connect the output cable and capacitance wire to the corresponding terminal (Tightly lock the screw). As for the multi-polar magnetized products, you should first connect the cooling water route and pneumatic section, then complete this step. Magnetizing solenoids don’t need to be cooled down.
2. Fix the power cable on the 220V power supply. The air switch should be more than 40A.
3. The specification of the power supply wire should be a copper wire with 6-10 square millimetres;
4. Turn the charging voltage to the smallest (except the automatic set-up in the internal.)
5. Select the eligible specification of the air switch (40A with leakage protection);
6. Verify the magnet polarity is correct in the process of magnetization, if any loss is caused by error, our company is not responsible.

Staring up and running

1. Connect the foot switch, connect to the external AC220V power, turn on the power switch (POW. SWITCH), and power indicator light, and fans begin to work;
2. Adjust the charging voltage setting knob. The charging voltage would increase with the adjusting range. The internal set maximum output voltage is 2500V. If users need a lower voltage to magnetize, they could appropriately turn down the setting knob;
3. Put the sample on the magnetizing coil solenoid and fix it with a fixture to avoid the sample’s popup. As for the multi-polar magnetized samples, please open the section on cooling water circulation. The ejector rod of the control cylinder will place the sample in the luggage carrier. Place the magnetizing sample in the magnetizing fixture, then press the foot switch. Battery charging and magnetizing would be completed at the same time;
4. After completing magnetizing, take out the sample for the circling magnetizing next time;
5. Before powering off, adjust the voltage setting knob (VOT.SET) and trigger a foot switch by counter-clockwise rotation to the end (to zero), then turn off the main switch;

Other description

1. It cannot magnetize the sample triggering the foot switch at first time. This process is to charge the capacitance. Until the charging voltage to a certain set value, each time you trigger the foot switch, it will magnetize the sample.
2. The shift of magnetizing and demagnetizing: The terminal switch in the upper end is a demagnetizing function. Shift during mid-time, please turn down the voltage knob and then shift it.

Safety caution

Equipment maintenance and notes

1. This device is high-voltage electrical equipment, and the working environment must be dustproof, with moisture, and ventilation, preventing the conductive dust from flying into the body, if occurred, the conductive dust should be immediately cleared; (such as by using air guns)
2. Set the magnetizing strength according to the actual production, if too high, the power consumption will be large and the magnetizing fixture will be hot, which will affect service life; generally do not exceed 2500V (the voltage of the machine has been set).
3. Do not place the equipment near electrical equipment such as computers, and air conditioners, do not place any item on the equipment;
4. Do not place any object within the equipment ventilation district 300mm, no flammable, explosive objects or corrosive gas near it.
5. The wire of this equipment can not be placed in the aisles, do not damage any wires;
6. Do not upside down or recline the equipment during handling and transportation, if need to tilt, the tilt angle can not be more than 45 degrees;
7. In order to avoid the risk of electric shock, do not open the cabinet. If needs to be repaired, it should be done by a qualified professional service technician or notify the company to send someone to repair. Any electrical shock caused by self-disassembly, self-maintenance or improper operation, our company is irresponsible;
8. Without our permission, the user can not open the host during the warranty period. Warranty is only valid under normal use, please operate under the instructions. Man-made damages caused by maintenance without our permission, self-disassembly, connecting inappropriate accessories, equipment waterlog or impurities, migration and accessories required update exceeding warranty period are not within the scope of the warranty. Due to wearing or the limitation of service lifted, the external devices are not covered by the warranty, such as foot switch, magnetizing fixture, indicator lights, fans, voltmeter, timely maintenance and replacement;
9. Do not place metal tools, electronic components, watches and other items near the magnetizing fixture or cable during operation;
10. Make sure that the main power is turned off and the energy storage capacitor is discharged before overhaul;
11. Turn off the power after operation;
12. Please use the specified coil. If used close to the short-circuit of the coil, the large current may damage the SCR;
13. The products sold by our company have our dedicated nameplate, which is the credential of the after-sales service warranty, please keep it well. If damaged (the words is unclear) or lost, this equipment will not enjoy free warranty service.
14. The power line should be inspected according to safety standards before operation every time; it should be replaced every six months;
15. Magnetizing fixture should use radiator coolant in car as cooling liquid, (replace frequently when using water) and within the normal range of liquid level.
16. If occur failure, the equipment should be stopped immediately, and continue to work after removing the fault.

Technical Parameters

Installation and Connection

Display of Main Panel

Display of the main panel

1. Power switch and indicator light
2. Trigger key and interface, turn on to realize to one-key trigger
3. Current direction selection, the left side is forward, the right side is reversed
4. Forward voltage setting
5. Reverse voltage setting
6. Capacitor voltage indication
7. Charge and discharge indicator light

3. Operation Process

Operation for Regular magnetization

• Step 1 Power Switch: Turn on the power switch, the indicator light will be on.
• Step 2 Magnetization: Adjust and set the forward voltage value, turn the current direction selection knob to the magnetization gear on the left, press the start button, start automatic charging, and reach the set voltage value, then stop charging immediately and discharge once, and complete once.
• Step 3 Demagnetization: The power supply with a bidirectional output current function can realize the demagnetization function. Turn the current direction selection knob to the right, demagnetize the gear, adjust and set the reverse voltage value, and automatically complete a charge and discharge after pressing the start button.

Operation for Quantitative Magnetization

• Sample 1#, after saturation magnetization, assuming the surface magnetic value of the measuring position is 1050GS, the target value of magnetization is 900GS

Software Control Method

• Automatic quantitative magnetization can be realized simply by using the control intelligent software.
• According to the shape & size and the position tested of the end user’s specific samples, a producer would specially design magnetizing coils so that the hall probe will be fixed on a specific position with the coil & samples to measure the sample’s surface magnetism to make sure the accuracy of the sample’s surface magnetism measured.
• The above design is for making sure the whole system for quantitative magnetization can be controlled by the control software to realize one key to complete quantitative magnetization.

Manual Control Method
Step 1 Sample Placement

• Placing sample into the magnetizing coil.

Note: During the process of magnetization and demagnetization, the front and back sides of the magnet placed in the coil should be consistent.

Step 2 Forward saturation magnetization

• Turning the current direction knob to the forward direction (i.e. Choosing the function of magnetizing), setting the forward voltage value (eg.1015V) to make the forward magnetic field reach sufficient saturation magnetization, pressing the button to trigger.
• After the system automatically completes charging and discharging, take out the sample and measure the corresponding position. If the surface magnetic value is about 1050GS, it means that it has reached saturation;

Step 3 Reverse demagnetization
Putting the sample into the coil again in the same direction, turning the current direction knob to the opposite direction (i.e. Choosing the function of demagnetizing), and roughly estimating a reverse voltage according to the target value, such as 80V, pressing the button to trigger that the system automatically completes charging and discharging, and then take out the sample, and then measure the surface magnetic value of the corresponding position. If it is a value that is more than 900GS (eg.947.9Gs), it means that the demagnetization is too much, that is, the reverse voltage of 80V is too high.

Step 4 Step-by-step approximation method for demagnetization

• Repeating steps 2-3, that is, repeating steps magnetize the sample to be state of saturation once again, and then repeat step 2 to adjust the reverse voltage value to 60V.
• If the measurement result still does not reach the target value, continue to repeat steps 1 and 2 several times to find the most suitable reverse voltage.

CONTACT

• Add : Unit 409, 4/F, No.992, Anling Road, Huli District, Xiamen, China
• Zip code: 361012
• Tel: 86-592-5237772
• Fax: 86-592-5237901
• Email: info@dexinmag.com
• Home page: https://www.dexinmag.com

References

• Home | Xiamen Dexing Magnet Tech. Co., Ltd.

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