How to make a demagnetization machine, easy demagnetization method

The importance of demagnetization After demagnetization, the workpiece is completely non-magnetic, does not absorb other ferromagnetic substances, and is easy to clean; Magnetic treatment can reduce residual stress, which can increase the life and surface effect of the workpiece. Demagnetization treatment technology is a new type of non-heat treatment metal material performance treatment technology, which uses magnetic pulse treatment process to reduce the internal residual stress of steel workpieces, change their dislocation structure and defect structure, and improve the overall comprehensive mechanical properties of the workpiece. The demagnetization treatment technology integrates electronics, ferromagnetism and metal materials, and has a high scientific and technological content.

The wear-resistant, durable and fatigue-resistant workpieces of magnetically treated workpieces are significantly improved. The demagnetization machine is generally used for the demagnetization of permanent magnet materials (ALNICO, ferrite) and low coercivity materials (hardware, die steel, etc.), which can be divided into pulse demagnetization and AC demagnetization.

Kunshan Suci nondestructive testing equipment manufacturing **** is a professional manufacturer of demagnetization machines.

Principle of magnetic machine demagnetization: 1The two most important conditions for demagnetization:

Magnetic poles overlap. The strength of the magnetic field decreases. 2.

Method of overlapping magnetic poles The magnetizing current adopts alternating current; Alternately change the direction of the direct current Change the direction of the specimen in the magnetic field 3The way of decreasing the strength of the magnetic field The specimen fades away from the magnetic field or the magnetic field fades away from the specimen The current attenuation or step-by-step descent is controlled by the power supply The models and specifications of the demagnetizing, demagnetizing and degaussing machines (devices) on the market are varied, and the objects and effects of demagnetization are different, but they are all designed and manufactured according to the above principles. 4.

We can calculate and design according to your specific demagnetization requirements: workpiece size, workpiece material, residual magnetic requirements, working efficiency, etc.

CHL gear special demagnetizing machine, HQ-500C gantry energy-saving demagnetizing machine.

Gear is a kind of toothed mechanical parts that mesh with each other, and it is widely used in mechanical transmission and the entire mechanical field.

The gears are machined from carbon structural steel, alloy carburizing and other materials.

The surface of the material of the gear itself is not magnetic. In the process of gear machining, including the use of magnetic chucks as fixtures and other machining, the gear material will be magnetized, so that the gear product will be magnetized. If the magnetic gear is not well demagnetized, it will not be cleaned, and it is easy to absorb iron filings.

Therefore, gear demagnetization is very important, and it must ensure a good demagnetization effect.

In order to improve the service life of power transmission gears and reduce their size, in addition to the improvement of materials, heat treatment and structure, the arc tooth shape gear has been developed. However, due to the characteristics of the arc tooth shape of the gear itself, the difficulty of demagnetization is increased to the ordinary demagnetizing machine, what type of demagnetizing machine should be used to achieve the most ideal effect?

Due to the characteristics of the workpiece of the gear itself and the difficulty of demagnetization, Fujian Sanwei Demagnetizing Machine Co., Ltd. has produced a special demagnetizing machine for CHL gears after research and development.

CHL can be a special gear demagnetizer because it uses NdFeB as the gantry demagnetizing alternating magnetic field. The characteristics of this magnetic field are:

1) The surface magnetic field is strong, the N pole and the S pole alternate repeatedly, 2) The magnetic field line penetrates up and down, and the magnetic field directly penetrates the gear workpiece from the top to the bottom, 3) The magnetic field line density is large, so as to ensure that there is no blind area for demagnetization, so the demagnetization effect is good.

Our CHL demagnetizing machine is available in 400C and 500C, and other specifications can be customized.

1. High-temperature demagnetization method: The main operation of high-temperature demagnetization method is to put the magnet into the high-temperature furnace for heating, and the magnetism of the strong magnet will be removed after high-temperature treatment.

2. Vibration demagnetization method: the strong magnet is vibrated strongly and violently, and the internal structure of the magnet is changed after the operation of vibration, so as to change the physical properties of the magnet.

3. Magnet AC demagnetization method: the magnet is put into the space that can produce the AC magnetic field, and after the AC magnetic field interference, the internal structure of the magnet will be disrupted, so that the two magnets can be demagnetized.

4. Tie degaussing method: tie two magnets together at the same pole and put it for a period of time, you can find that its magnetism is reduced, and the magnetism will disappear after a period of time.

5. Strong magnetic degaussing method: use a stronger magnetic magnet to make the weaker end of the magnet lose its magnetism.

Summary. Dear, here's how to demagnetize:

Dear, here's how to demagnetize:

1.Use a magnetizing gun.

Once the Magnetizer Gun is powered on, attach it to the item to be demagnetized, and slowly move the Magnetizer Gun away from the item. The operation can be repeated many times, and the direct banquet will be transported until the item magnetizes and disappears.

2.Use electromagnetic fields.

You can find a strong electromagnetic field, put the item that needs to be demagnetized close to the electric buried fiber magnetic field, stay in it for 2 to 3 minutes, and then let the item slowly move away from the electromagnetic field, and so on, until the magnetization of the item disappears.

3.Use the reactance demagnetization method.

Wrap the item that needs to be demagnetized around a series of reaction coils, and make the coil generate a magnetic field through alternating current, which can eliminate the magnetism of the item.

4.Use the strong heat demagnetization method.

Put the items that need to be demagnetized into a high-temperature environment of more than 300 meters, such as ovens, high-temperature stoves, etc., and then wait for the items to stay in the temperature environment for an hour or two, and the temperature will gradually decrease until it cools.

Dear, it should be noted that these demagnetization methods are suitable for some simple items.

If the demagnetization item is complex or has a special purpose, you should seek professional demagnetization services.

At the same time, during use, it is necessary to pay attention to safety issues to avoid <>problems such as fire, heat injury and radioactive hazards

1. Install the wiring, and connect the three power cords drawn out of the demagnetizer to two voltage AC 380V live wires and one neutral wire respectively. Comes with a travel switch that can be used on the production line instead of manual operation.

2. Manual demagnetization, after the power supply is turned on, the power indicator light is on, first put the workpiece into the frame mouth, pull the working mode switch to the manual position, the demagnetization work starts, the demagnetization indicator light is on, stay for about 5 seconds, slowly move the workpiece out of the frame mouth, and then pull the switch back to the stop or automatic position, after a delay of 6 seconds, the demagnetizer will automatically stop working, the demagnetizer finger and sock indicator light will go out, the workpiece must be moved out of the frame mouth before the demagnetizer stops working, and move the workpiece from the frame mouth along the horizontal direction to the demagnetizer meters away from the place.

3. Automatic timing demagnetization, when used in the production line, pull the working mode switch to the automatic timing position, connect the travel switch, and adjust the travel switch to the suitable position in front of the frame mouth, so that it can press the workpiece before entering the frame mouth at a constant speed. The workpiece passes through the demagnetization port in 5-6 seconds and reaches meters away, the demagnetizer automatically stops working, and the demagnetization of the workpiece is completed.

4. Under the demagnetization condition of the workpiece, the working mode switch is generally in the automatic timing position, and the residence time in the manual position shall not exceed 1 minute each time.

Demagnetization principle: the two most important conditions for demagnetization treatment:

a) Overlapping magnetic poles.

b) Decreasing magnetic induction intensity.

Method of overlapping magnetic poles.

a) Magnetizing current is alternating current;

b) alternately change the direction of direct current;

c) Changing the direction of the specimen in the magnetic field.

The way in which the strength of the magnetic field decreases.

a) The specimen fades away from the magnetic field or the magnetic field fades away from the specimen;

b) The current attenuation or step-down is controlled by the power supply.

There are various models and specifications of demagnetizers and demagnetizers on the market, and the effects of demagnetization are different.