What manufacturing technology does Electromotor Housing-Aluminum High Pressure Die-Casting New Energy Auto Parts use?

This motor housing uses High Pressure Die-Casting
1.Technical Definition
High-pressure die-casting technology, namely pressure casting, referred to as die-casting, is essentially a method of filling the die-casting mold (die-casting mold) cavity with liquid or semi-liquid metal at a high speed under high pressure, and forming and solidifying under pressure to obtain Electromotor Housing-Aluminum High Pressure Die-Casting New Energy Auto Parts.

2.Technical Features
High-pressure and high-speed filling: The commonly used injection pressure ranges from several thousand to tens of thousands of kPa, and even up to 2×10^5kPa; the filling speed is about 10~50m/s, and sometimes even up to 100m/s or more.
High efficiency: the filling time is very short, generally within the range of 0.01~0.2s; the machine productivity is high, for example, the domestic JⅢ3 horizontal cold chamber die casting machine can die-cast 600~700 times in eight hours on average, and the small hot chamber die casting machine can die-cast 3000~7000 times every eight hours on average.
High precision: the casting has high dimensional accuracy, generally equivalent to grade 67, or even grade 4; the surface finish is good, generally equivalent to grade 58.
High strength: the strength and hardness of the casting are high, and the strength is generally 25~30% higher than that of sand casting, but the elongation is reduced by about 70%.
Easy to achieve mechanization and automation: due to the precise size and smooth surface of the die casting, it is generally no longer machined and used directly, or the processing volume is very small, so it not only improves the metal utilization rate, but also reduces a lot of processing equipment and working hours.

3. Technical advantages
The casting has precise size and smooth surface, and can be used directly or with a small processing volume.
High production efficiency, suitable for large-scale production.
Thin-walled and complex castings can be die-casted, such as the current small wall thickness of zinc alloy die-castings can reach 0.3mm, and aluminum alloy castings can reach 0.5mm.

4. Application Scope
At present, die-casting technology is not only used for non-ferrous metals such as zinc, aluminum, magnesium and copper, but is also gradually expanded to die-cast cast iron and steel castings. The size and weight of die-castings depend on the power of the die-casting machine. As the power of the die-casting machine continues to increase, the size of the castings can range from a few millimeters to 1~2 meters, and the weight can range from a few grams to tens of kilograms. In addition, the application field of die-castings is no longer limited to the automotive industry and the instrumentation industry, but has gradually expanded to agricultural machinery, machine tool industry, electronics industry, national defense industry, computers, medical equipment, clocks and watches, cameras, and daily hardware. Many other industries.