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If you want to know why you should choose cold chamber die casting to sky-rocket your business. In this article, you will know the details of hot chamber die casting and cold chamber die casting, and we hope you can understand the importance of cold chamber die casting in the die casting industry.

Know Hot Chamber Die Casting

Hot chamber die casting can be applied to many metals and it has a very efficient production capacity. It has a pouring system whereby molten aluminum is added to the mold to produce a specific shape of die casting once the metal has become molten in a confined space. Because it is closed and the pouring system is in direct contact with the metal in this state, it is highly productive and allows for high-volume production.

The Aluminum Properties

Aluminum has a melting point of roughly 660°C. It easily reacts chemically with iron at high temperatures to produce an aluminum-iron alloy. This is a kind of loss, and this chemical reaction consumes the hot chamber die casting injection system and the metal parts in contact with aluminum. It can quickly deplete the life of your equipment, leaving you to invest more resources in maintaining it.

At high temperatures, aluminum is very susceptible to chemical reactions with oxygen. It will generate aluminum oxide Al₂O₃, this oxide is very stable and difficult to deal with, which seriously affects the quality of die castings. You will find surface defects, uneven structure, and other problems in die castings.

Alu Chooses The Cold Chamber Die Casting

Hot chamber die casting has a strong capacity capability in production. Yet it can’t avoid the disadvantages of overheating during the casting period. And here are the reasons why you should choose it.

Cold chamber die casting is more suitable for aluminum die casting parts than hot chamber die casting. This is because in the cold chamber die casting process, we melt the metal first and then pour it into the die casting machine in a special way. Therefore, the chemical reaction between aluminum alloy and iron is well controlled in cold chamber die casting, and does not make them get a long time or full contact to complete the chemical reaction.

Why Cold Chamber Die Casting Special

In the cold chamber die casting process, molten aluminum will be removed from the furnace, poured into a cooling chamber, and the metal will be injected into the mold through the structure of extrusion to form a die casting. This design allows the molten aluminum to greatly reduce its contact time with the pouring system, reducing the likelihood of it reacting chemically. Moreover, the cold chamber die casting process can cast larger die, which is why aluminum die castings are widely used in several fields such as automotive, medical, and aerospace.

Cold Chamber Die Casting Advantages for You

High Melting Point Metals Friendly

Cold chamber die casting is a good choice for metals with high melting points, such as aluminum alloys. Because of their high melting points, these metals tend to react chemically with the metal material in the equipment, causing unnecessary wear and chemical corrosion. Cold chamber die casting effectively reduces the direct contact time between molten aluminum and the machine, greatly extending the life of the equipment.

High Production Quality

Cold chamber die casting is capable of producing castings with high precision and surface quality. This process can realize the molding of parts with complex geometry, with good dimensional stability and consistency. In addition, the cold chamber die casting process metal mobility is better, can reduce the casting in the porosity and other defects, and improve the mechanical properties of the product and appearance quality.

Conclusion

Aluminum is not a better material for hot chamber die casting process because its melting point. This makes it more likely to be chemically mixed to iron. The cold chamber die casting process cleverly avoids this situation, allowing aluminum die castings to be highly productive and multiform. Therefore, cold chamber die casting for aluminum alloy is currently the best choice.

If you want to find the best cold chamber die casting service provider, or you want to customize a large number of aluminum die castings, please contact Scojet, and we will provide you with the perfect service.