Why You Should Choose Pressure Die Casting Machining?
To better understand the essence of pressure dies casting in the metal fabrication industry. We should have an adept understanding of the process. At Creatingway, we practice the different types of pressure die casting and having identified their pros and cons. Therefore, we can choose what is best for our esteemed clients. Mostly, pressure dies casting, for those unaware of the process and its value refers to the process of injecting molten metal alloy into a steel mold under high pressure then solidifies, forming an intended net shape.
The pressure die casting process is a quick, convenient, reliable, and economically friendly manufacturing process, so we use to produce high volume metal components. The parts have net shapes and tight tolerances.
Which types of die casting we can provide for your project?
- High pressure die casting
- Low pressure die casting
What’s the high die casting machining?
High-Pressure Die Casting
At Creatingway, we inject molten metal at high speed and high pressure into a metal mold. Our original equipment for this procedure comprises two vertical platens. We place bolsters on these plates so that this holds the die halves together. One of the platens usually is movable. The other is not moveable. Experience proves that this helps in opening and closing the die. Customer specifications are key since we utilize these specs in determining the amount of metal put into the sleeve, followed by pouring into the mold cavity.
There are different types of high-pressure die casting, and a brief description is below. A point to note is that the only significant difference between the two lies in the method being used to inject molten metal into the die.
Hot chamber process
It applies mainly to metallic alloys of low melting points such as zinc. But It does not erode metal pot cylinders and plungers. How it works is as follows; Molten metal intended for casting is placed in the holding furnace at a calibrated temperature adjacent to the machine. An injection mechanism is inside the holding furnace, and most of the part is continually touching the molten metal. As the injection piston transmits pressure, metal forces its way into the die. Hence, this process ensures minimal contact between the air and metal. So that It has minimized air entrapment within our product.
Cold Chamber Process
As aforementioned, it different from the hot chamber process by its injection system, which is not inside the molten metal. Metal is transferred by a ladle automatically to the short sleeve. A hydraulically powered plunger pushes the metal into the die. This process ensures minimal contact between molten metal and the injector components. It helps in extending the life of the components. Unfortunately, air entrapment is a common resulting defect, and the castings have a characteristic gas porosity. Injection pressure in our cold chambers is over 70,000KPa.
What’s the low pressure die casting
We use this process in the production of high-quality castings of magnesium and aluminum alloys of low melting points. The castings of aluminum usually weigh within the range of 2-150 kg. So that It works as follows that the metal die placed above a furnace containing molten metal. A refractory riser links the die above to the molten metal below. Low air pressure (15-100KPa) pumped into the furnace causes the molten metal to rise the tube into the die cavity under low turbulence. After metal solidification, the pressure is released, causing metal that is still in its molten state to fall back into the furnace. After further cooling, we extract the final casting product. Hence, the casting yield is exceptionally high.
Which applications we can apply with casting?
- Aerospace castings
- Kitchenware such as pressure cooker
- Cabinets for the electric industry
- Automotive parts like wheels, blocks, cylinder heads, and manifolds
- General hardware appliances such as plumbing part and pump parts
What’s the advantage of the casting process?
- It is a lower-cost process compared to other processes
- It is economical, especially in the production of any number of components ranging from thousands to millions. Hence, it is very convenient in high volume projects.
- Castings are thin-walled and thus lighter in weight.
- Castings also have close dimensional control and god surface finishing.
Do not hesitate to request a quote from us at Creatingway, as we are well versed in pressure die casting and offer the best deals on the market.
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