smc molding compound As an advanced thermosetting composite material of glass fiber reinforced non drinkable and polyester resin, (bulk molding compound) has attracted much attention since its development in the late 1950s and has rapidly developed. Like general thermosetting plastics, the molding skills of SMC molding materials include limited molding and injection molding, both of which are commonly used in injection molding factories for plastic product molding. However, in reality, for a long time, the main focus was usually on limiting molding, while injection molding was limited to producing a few small parts with low requirements, and its development was not significant. Until recent years, BMC injection molding technology has truly played an important role in the use of unsaturated polyester molding materials.

smc molding compound After entering the material barrel with a certain temperature through the hopper, it is heated and softened, and continuously sheared as the temperature of the barrel increases and the screw rotates or the plunger advances. It also generates heat in conflict with the barrel wall, further plasticizing the SMC molding material into a viscous flow state. Then, the SMC molding material is injected into the high-temperature mold without passing through the nozzle and flow channel during the advancement of the screw or plunger, and the viscosity increases sharply. After appropriate insulation and curing at the appropriate time, the mold is opened and the parts are taken. During the process from the feeding tube to the discharging tube, SMC molding compound undergoes both physical and slow chemical changes. After being injected into the high-temperature mold cavity through the nozzle, a curing reaction occurs, forming a network structure reinforced with fiberglass and filled with fillers.

SMC molding process: After measuring the SMC material, it is placed in a metal mold and cured into a mold shaped SMC product under suitable temperature, pressure, and time conditions. The general production and processing process of SMC molding products includes the following steps: mold loading time - mold heating time - press opening time - product removal time - mold cleaning time - feeding time - mold closing time - curing cycle - post processing time of the product

Copper bars, also known as copper busbars or copper busbars, are long conductors made of copper raw materials with rectangular or chamfered (rounded) rectangular cross-sections (nowadays rounded copper bars are generally used to avoid tip discharge). They are used to transport current and connect electrical equipment in circuits. Copper bars have been widely used in electrical equipment, especially in complete sets of SMC molded plastic equipment for power distribution; Generally, copper bars are used for the U, V, W phase busbars and PE busbars in the distribution cabinet; Copper bars are generally marked with colored letters or coated with colored paint during use, while U-phase copper bars are coated with“ Yellow” Color, V-phase copper bar coated with“ Green” Color, W-phase copper bar coated with“ Red” Color, PE busbar copper bar coated with“ Yellow green alternation; Two color.

The article originates from SMC molded products:

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