Because of the application and particularity, the production management of explosion-proof motor and the requirements of the product itself are higher than those of ordinary motors, such as motor test, parts material, size requirements and process inspection test.
First of all, explosion-proof motor is different from ordinary motor, because it belongs to the production license management scope of industrial products, the state will in accordance with the actual situation, timely adjust the production license management product catalog and release, in the corresponding catalog of product manufacturers, must obtain the production license issued by the national competent department, before production and sales; The products outside the scope of the catalog do not belong to the scope of production license management, which is also the existence of some questions in the bidding process of motor products.
The particularity of parts design and production control. The fitting size of the explosion-proof motor parts is smaller than that of the ordinary electric length, and the fitting gap is relatively small, so as to meet the explosion-proof requirements of the motor operation process. Therefore, in the actual production and maintenance process of motor, ordinary motor parts can not be simply used for explosion-proof motor; For some parts, the conformity of their performance should be evaluated by hydraulic test in the process of production and processing. Therefore, the shell material of explosion-proof motor also has specific provisions.
The difference of the whole machine inspection. Supervision and random inspection is one of the means to evaluate the quality of motor products. For ordinary motor products, the key point of inspection is the conformity of its installation size and the performance index of the whole machine. For explosion-proof motor, necessary inspection must be carried out on the parts that affect the level of the explosion-proof performance of the motor, namely the flameproof surface compliance inspection. In recent years, in the process of random inspection of the whole machine at different levels, the compliance of flameproof surface has always been the most problematic item found in the random inspection of the motor. The analysis believes that this is mainly caused by the lack of recognition of the processing standards of the explosion-proof motor parts by the motor manufacturers, as well as the lack of quality control when some parts are organized by purchasing.
The particularity of assembly fixation. For the assembly and fixing of the key parts, especially the fasteners of the wiring system, there are also specific regulations on the screw length, including the screw holes in special parts can only be blind holes, which is a problem that must be paid special attention to during the processing of explosion-proof motor parts.
Post time: May-24-2023