This process is to use an aluminum die-casting machine to break down the punched rotor pieces into finished rotors. The punching molds for automotive motors are all processed by CNC lathes, with automatic chamfering on the machining center. Then, the aluminum fan blade grooves are cut with irregular shapes on the middle and bottom of the wire, forming them in one processing. After quenching and tempering, it is an essential process for matching the rotor pieces. The front and back processes can be smoothly connected without errors, and the price is also reasonable.
The working principle of pressure cast aluminum is to inject melted aluminum liquid into the mold cavity under pressure, and wait for it to cool and solidify into castings. Its characteristics include: (1) Throughout the die-casting process, pressure plays a major role. (2) During die casting, if the gas in the mold cavity cannot be discharged in time during high-speed punching, the molten metal will be sucked into the metal and produce pores. (3) Due to the fact that the metal liquid filling process is carried out under pressure, the rotor core can be die cast in a cold state. (4) High production efficiency, easy to achieve mechanization and automation, thereby reducing labor intensity.
