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The meat thickness of transformer BOBBIN skeleton is inconsistent. For example, the thinnest meat thickness of UL test PM-9630 is 0 and 39 mm. If your wall thickness is lower than this thickness, it is reasonable to have poor withstand voltage. If the mold is OK in mass production and NG in manufacturing process, it may be caused by uneven meat thickness caused by eccentricity or dislocation of the mold. The main raw materials and characteristics of transformers N-core is magnetic medium, that is, magnetic core. The main materials of coils are skeleton transformer, which is mainly composed of iron core and coil, iron (bracket, BOBBIN), wire rod, insulating film (tape, paper), insulating paint and auxiliary materials
Transformer BOBBIN is a device that realizes electromagnetic energy conversion through iron core and winding. The performance of transformer will be determined by the performance of core materials and whether they are selected correctly.
Transformer BOBBIN often encounters such and such problems in the manufacturing process, and it is necessary to analyze the specific problems. Some HIPOT defects are often caused by several reasons, which can be solved only by comprehensive analysis. This requires us not only to know the manufacturing technology of our major, the characteristics of raw materials, the structure of the mold, and the performance of the machine, but also to understand the manufacturing process of transformer manufacturers, the characteristics of vertical water, and the way of encapsulation, so as to solve the problems more effectively.
The meat thickness of transformer BOBBIN skeleton is inconsistent. For example, the thinnest meat thickness of UL test PM-9630 is 0 and 39 mm. If your wall thickness is lower than this thickness, it is reasonable to produce poor pressure resistance. If the mold is OK in mass production and NG in the process, it may be caused by uneven meat thickness caused by eccentricity or dislocation of the mold.
Poor debugging during molding causes pressure resistance and poor (temperature resistance). Usually, these two problems occur at the same time, which are mainly caused by improper debugging of molding parameters. If the temperature of bakelite mold is too low (too high) or uneven, it may lead to insufficient chemical reaction of bakelite, incomplete molecular chain and poor pressure resistance and temperature resistance. When the injection rate is too low or too small, it may lead to insufficient product density, resulting in poor pressure resistance and temperature resistance.