Die casting produces high quality and complex parts
High Pressure Die Casting (HPDC) is one of the conventional methods for producing complex parts. Using this technique, car engine blocks and other complex car parts can be produced easily. In addition, surgical instruments and many sensitive parts are also produced using pressure casting. The process of casting under pressure is very technical and requires special equipment. Therefore, you should first of all choose the best method by checking your needs and possibilities. In this article, we will learn about the pressure casting process and its details.

What is the pressure casting process?
Die casting is a part production process in which molten metal is transferred into a mold. Performing this process under high pressures (hydraulic pressures) leads to a better transfer of molten metal into the mold. After cooling down and taking the shape of the piece, the finished product can be easily removed. The mold used in this process is usually steel and can be used many times.

What is the pressure casting process?
What is the pressure casting process?
This process was first used in the middle of the 19th century with the aim of producing typewriters. For this purpose, the device keys were designed with high precision. Very soon this method was used in other departments as well. Since 1914, industries used new materials such as zinc and aluminum alloys to produce parts, and many products were made with them. In addition, today many complex alloy parts are produced by pressure casting.

Investigating the pressure casting process
The process of casting under pressure consists of specific steps that must be carried out with sufficient precision. In this process, molten metal is poured into a mold under very high pressure and after cooling, it comes out as a final product. In the following, we will learn about the different stages of the casting process.

mold manufacturing
First of all, a suitable and quality mold should be made for casting. This is the first stage of the pressure casting cycle and will greatly save production costs and waste. Next, the inner surface of the mold should be well lubricated to facilitate the removal of the part from the mold.

mold manufacturing
mold manufacturing
Injection of molten material
In this step, the molten metal is injected into the mold through a narrow opening. Injection of molten materials is done in two general ways, cold and hot. The difference between these two stages is the temperature of the molten material and has a direct impact on the quality of the part. These two processes are:

Hot injection chamber: In this method, the molten metal injection system is integrated into a furnace. In this way, the molten material is transferred through the piston to a nozzle and then to the mold. This method can be used for pressure casting of zinc, magnesium and lead
Cold injection chamber: In cold chamber injection, the molten metal is transferred to a special chamber manually or by an automatic mechanism. Next, the molten metal will be injected into the mold using hydraulic power. After the metal has cooled, it is possible to open the mold and remove the piece. You can use this process for die casting metals that have a high melting point (aluminum, brass, magnesium). You can use horizontal or vertical injection in this process
Remove the mold
After you are sure that all the molten material inside the mold has cooled, you should remove it. For this purpose, separable parts are provided on the mold so that the part can be separated as easily as possible. You can easily remove the part from the mold using these moving parts.

Remove the mold
Remove the mold
Modification and payment of the piece
The last step in the die casting process is to remove the excess parts and make the necessary modifications on the part. By doing this, you will own the final product. The waste obtained in this process can be reused and used again to make new parts.

Advantages of the pressure casting process
Die casting process is very popular due to its many advantages. You can see parts produced in this way in different industries. In the following, we will get to know some of the most important advantages of the pressure casting process.

The possibility of producing parts with high circulation
You can increase the production rate of parts by using the pressure casting method. This technique has a higher circulation compared to low pressure casting or gravity casting. Using the pressure casting method allows you to inject molten metal into the mold at a high speed and make various parts in a short time. For this reason, this process is used for high volume production

The possibility of producing parts with high circulation
The possibility of producing parts with high circulation
Very high quality parts
The parts produced by the pressure casting method have excellent dimensional quality and surface finish. For this reason, the final parts need less payment and modification, and this will save time and money. A good finish on the parts also makes the plating process easier. In addition, the advantages of the pressure casting process lead to very good uniformity and optimal mechanical properties of the produced parts.

Very low thickness of the part wall
By performing the pressure casting process, you can produce parts with much thinner walls compared to other techniques. In this way, it will be possible to achieve a wall thickness of less than 0.40 mm. This allows manufacturers and craftsmen to produce lighter and more delicate parts. In addition, you

https://metal-cast.ir/

Edit
Pub: 07 May 2024 11:46 UTC
Views: 29