Damage and repair of the explosion-proof motor shaft in Nanyang

2023-11-21 23:34:48

Explosion proof motors are suitable for many industries and are highly favored in various industries such as chemical, metallurgical, and coal mining. They are also composed of many accessories, and we also need to ensure the normal operation of the accessories. Below are some information on the damage and repair of the motor shaft organized by Nanyang Explosion proof Motors:

The shaft is the main component of an electric motor that transmits torque and drives mechanical loads. It should have sufficient strength to transmit the power of the motor and sufficient stiffness to prevent vibration and friction between the stator and rotor during operation.

Improper use of the rotating shaft may cause damage. For example, when disassembling a belt pulley, it is not necessary to use professional tools and randomly knock; If the pulley or coupling is not in the same straight line during installation, it may cause bending or other faults of the shaft.

1: Inspection of shaft head bending

Clamp the rotor that needs to be inspected on the lathe and measure it with a dial gauge or a dial gauge. If the bending of the shaft head exceeds the allowable range, it must be corrected. Correction can be carried out on a press machine, which pressurizes and straightens the bending part of the shaft. The corrected surface should be polished.

2: Repair of keyway wear

When the keyway is severely worn, electric welding can be used to overlay the worn area, followed by annealing to eliminate welding stress, turning, and reloading the keyway. If the wear of the keyway is not significant, the grinding powder area can be widened by no more than 15% of the original keyway width.

3: Repair of journal wear

When the journal is slightly worn, a layer of chromium can be plated on the surface of the journal by electroplating. Then grind to the specified size. Metal spraying can also be used to spray a thin layer of metal onto the journal, grinding the sprayed journal to the specified size. When the wear of the journal is severe, it may cause friction between the stator and rotor. Therefore, it is necessary to use electric welding to overlay the worn area of the journal, then annealing to eliminate welding stress, and then cutting and polishing to fit the size.

It should be pointed out that using the welding method to repair the journal may cause shaft deformation, and it is necessary to use the sleeve method to repair the severely worn journal. If the shaft has broken, it needs to be replaced with a new shaft of the same steel grade.

The above is the relevant information provided by Nanyang Explosion proof Motor to help you better understand shaft damage and subsequent repairs, for your reference. Nanyang Lite Explosion proof makes you worry free after sales. Welcome to call for consultation!