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The manufacture of motor casing is a very important part of motor production. The materials of the motor casing are generally cast iron, cast aluminum alloy, steel pipe, steel plate, etc. The main purpose is to protect the motor from rain, corrosion, rust and other environments. The following is how the motor casing manufacturer detects the air tightness of the motor casing.

In a humid environment, ordinary motor casing materials are easy to corrode and rust, and the waterproof performance of the motor depends on the protection of the casing. Water erosion of the motor can lead to unstable use or failure of the motor, so the waterproof casing of the motor is very important.

In order to achieve the IP67 waterproof rating test of the motor housing, the technology adopts the following equipment and methods:

Equipment used: HC classic series dual-channel air tightness test equipment

Test method: Use the direct test method. Due to the particularity of the motor casing, the custom work clothes must have a mold, put the product into the mold, fix the product up and down, test, the test pressure is 250KPA, the expansion time is 10 seconds, the regulator time is 10 seconds, the test time is 5 seconds, and the leakage value is 50PA.

The dual-channel confidentiality test equipment allows quick detection of OK/NG products, and simultaneous detection of two products, with higher test efficiency. Motor case manufacturers believe that customers are satisfied.

After the waterproof protection of the motor casing, the water can be greatly prevented from entering the motor. Using traditional water to test the tightness of the motor casing is inefficient and unintuitive, and it is difficult to find some sealing problems. There is no such problem with confidentiality inspection equipment using science and technology. This is an emerging seal detection technology. It can quickly detect important product quality indicators such as waterproof level and sealing degree.

The quality of a geared motor depends on a number of factors. In addition to factors such as the quality and type of gears in the geared motor, the type of motor used, etc., the housing material also determines the quality and performance of the geared motor.

Common types of materials used for geared motor housings include various aluminum housings, cast iron, and stainless steel. Aluminum shells vary by manufacturing technique, common among them being sand casting, die casting, die casting, or billet machining.

Other materials to choose from include cast iron and stainless steel, cast zinc, and even injected magnesium, etc., which are more expensive. For example, good general purpose housings are generally made of cast iron, and in corrosive environments or where a high level of hygiene is required, stainless steel housings are preferred. But in food and beverage applications, special stainless steel housings for cleaning cost more than twice as much as traditional and regular aluminum or cast iron housings.

Not only the material itself, but also other factors that motor casing manufacturers believe determine the quality and performance of the casing. For example, material thickness and reinforcement material change the service life by changing the housing strength of the geared motor.

Stainless steel gear motor boxes are specially designed to minimize contamination in food and beverage applications.

The charging of the motor casing generally occurs when the construction work is carried out after the shutdown. Due to the humid underground working environment, the motor's own motor materials are easily damped in this environment, leakage, and then directly put into use when the construction work is carried out. In the case of intermittent leakage in the early stage, construction operators often ignore this situation. This leads to major equipment accidents and even endangers the lives of workers. If leakage is found, stop work immediately for inspection, drying, isolation and other professional treatment. When working again after long-term non-working, insulation test must be carried out to ensure the safety of people and equipment.

In addition, unstable motor voltage, mechanical friction of bearings inside the motor, and problems with windings, stators, and rotors are common problems of mechanical equipment, and are also common faults of motor casings. To this end, it is necessary to carry out regular daily inspections, and it is also necessary to master the basic knowledge applicable to the maintenance of commonly used equipment in construction. All can help maintain the normal operation and operation of the motor.

As a mining machinery and equipment, in order to ensure the daily work, not only the quality requirements of the equipment itself are strict, but also its own working environment is relatively special, so special attention should be paid to the requirements of its working conditions. To ensure the conditions of ventilation, cleanliness, voltage and current, more attention should be paid to the daily maintenance and inspection of the motor casing, and more attention should be paid to the inspection of electric vehicles that are approaching the service life. In order to ensure efficient and safe construction work.

Operation steps of motor casing heater:

Place the yoke on the end face of the body.

Insert the plug into a power outlet with a control switch.

Check whether the ground wire is in good condition, and test it with a measuring pen after turning it on.

When necessary, turn it on, the host will automatically detect the probe, the ambient temperature, and display the ambient temperature at the same time.

Check the yoke, there must be no voltage on the ground.

The yoke should be selected according to different specifications of bearings or different workpieces, and the yoke should be placed on the top surface of the main engine and placed flat.

Press the button to select temperature or time control, to adjust the temperature or time, press up or down to select the corresponding parameter.

Press the "Start" button. The host starts to heat the workpiece. When the set time is reached, the host will automatically stop heating and automatically retract the workpiece. After the temperature adjustment reaches the set temperature, the workpiece is in a constant temperature state. If you need to install it, you can press the stop button.

After the bearing is heated to the desired temperature, the power will automatically turn off, or click the stop switch.

After heating is stopped, the yoke is moved left or right, the motor housing or bearings are removed, and the yoke is put back on top of the main unit.

The above is a basic overview of "what is the reason for the electrification of the electric locomotive motor casing", please refer to it yourself. If you have any questions, please contact us directly or follow us. If you think the article is good, you can also directly bookmark it.

The motor is the core part of the sewage lift and can be said to be the heart of the entire system. Every component above will affect the overall quality of the sewage lift, including the casing that wraps the motor. The motor casing protects the internal rotor and stator coils of the motor, and plays the role of heat dissipation of the motor during operation. The heat dissipation of the motor is not good, the sewage lift is easy to burn, and the shell material has a great influence on the function. Common sewage hoist motor housings are plastic, stainless steel, cast iron and main aluminum alloys. The following motor casing manufacturers talk about how to choose the sewage lifter according to the material of the motor casing.

plastic

Plastic is a general term for various polymers, thermal conductivity: about 0.17-0.5, poor thermal performance. When used as a motor housing, compared with metal materials, it has great advantages in manufacturing cost, anti-corrosion and weight, but has great defects in cooling and mechanical strength. Motor casing manufacturers believe that it is usually used as the casing for small and low-cost motors, such as hair dryers, hand drills, electric fans, etc. Manufacturers of sewage lift equipment also use it as the motor housing of the equipment in order to reduce the overall cost. External motor lifts rarely use plastic housings, and there are many small sewage lifts with built-in pumps that use plastic housings.

Stainless steel

Thermal conductivity: about 16-20, the heat dissipation performance is average. Stainless steel can no longer be familiar to the public, it has a certain corrosion resistance. Stainless steel is more expensive than cast iron for the same weight, but as a housing for the same powered motor, stainless steel is much cheaper than cast iron. The main reason is that the stainless steel motor casing is very thin, only 2 mm thick, with weak impact resistance and general safety and stability. The cost will be higher than the plastic motor housing. A few low-end external pump lifts use motors with stainless steel casings.

cast iron

Thermal conductivity: about 42-90, which makes up for some defects of plastic casing and stainless steel casing, and is widely used in the casing of various motor products. The cast iron shell is made thicker, and the external surface is anti-corrosion and impact resistance is also very good. However, the cast iron casing is usually very thick and has poor heat generation. It is generally used for the casing of the submersible pump motor and needs to be cooled by water. For the same power motor, the cast iron motor housing costs more than the stainless steel motor housing. However, the external lift motor has poor heat generation and poor stability.

Cast aluminum alloy

Import coefficient: 138-147, high thermal conductivity, high calorific value! The thermal conductivity is four times that of iron, and the density is only one-third that of iron. Pure aluminum is soft, and anti-corrosion, oxidation-resistant and wear-resistant metal components are added to aluminum, and a special process is used to make aluminum-based alloys. The strength of this cast aluminum alloy is already about the same as good steel hardness, but the manufacturing cost will rise a lot. When used as sewage lifting motor casing, the same environmental factors can improve the anti-corrosion performance, provide better cooling effect for the motor, and improve the life of the motor. In the field of sewage lifts, professional manufacturers will make motors into shapes. In order to make the motor work properly in dry operation, in order to choose a motor housing with better heat dissipation performance and stronger strength, the external pump can work normally. For external motor lifts, the heat generation of the casing is the key. At the same time, the motor casing manufacturer believes that because it is external, there may be accidental collisions, and the strength and impact resistance of the casing are also particularly important. Cast aluminum alloy is undoubtedly the better motor casing for external lifts, with better heat generation, excellent strength and impact resistance among the four casings. The strength and impact resistance of cast iron are relatively good, but the heat generation is not good, so it is not suitable for making lifts with external motors. Generally used for submersible water pump motors, which need to be cooled by water. The manufacturer of the motor casing believes that the lift outside the motor needs air cooling of the motor, which cannot meet the working conditions of air cooling at all.