Re-manufacturing is a new measure proposed for the elimination of high energy consumption equipment, 3 phase motor re-manufacturing has once become a popular business for many motor producers and repair units, and some units have specially carried out motor re-manufacturing work. With the country’s control of high energy consuming motors, a large number of high energy consuming motors in service and have not yet entered the application have become an urgent problem for many motor owners to deal with, but it is cost-effective to replace the new motor or re-manufacture more cost saving, which has become a problem that motor users must weigh; For the motor that has not yet been sold, whether to scrap or re-manufacture has also become a choice that must be made; There is also a very objective problem, how to evaluate the performance level of the re-manufacturing motor, whether there is a suspicion of hanging sheep’s head and selling dog meat?
All of these also boil down to the technical and cost analysis of the motor re-manufacturing, as well as the problems that may be encountered in later operation! According to the current eliminated three phase motor catalog, there should be a large number of Y series, Y2 series, and other motors that do not meet the level 3 energy efficiency of GB18613-2020 version. From the current understanding of re-manufacturing technology, in order to greatly improve the original relatively low efficiency, most of them will start with the rotor of the motor, that is, the original cast aluminum rotor outer diameter is turned. This is then used as the basis for magnetic steel installation, and the rotor is manufactured into a permanent magnet rotor. At the same time, in order to ensure the matching relationship between the stator magnetic field and the rotor magnetic field, it is also necessary to design the stator winding of the motor. The three phase induction motor transformed by this re-manufacturing technology is to transform the original asynchronous motor into a permanent magnet synchronous motor. Starting from the actual needs of materials, a re-manufactured motor only needs to invest rotor magnetic steel and winding materials, but the labor cost involved will be more, mainly including the re-manufacturing design cost of the motor, the change of the original state and size of the rotor and stator. And the cost of re-manufacturing windings and rotors, as well as the cost of converters that must be equipped after the asynchronous machine is transformed into a synchronous machine.
In view of the above analysis, whether the motor is re-manufactured is more cost-effective for batch motors, but for personalized small batch motors, most motor users will give up re-manufacturing and buy new machines; For units specializing in re-manufacturing, whether it can bring benefits to motor owners also directly affects the possibility of undertaking business.
Post time: Sep-25-2024
