How to choose aluminum alloy die casting die steel?

How to choose aluminum alloy die casting die steel?

Aluminum alloy die casting production requires die steel. Therefore, what are the requirements for choosing this kind of die steel?

1. High fire resistance, cold and heat fatigue resistance. Generally speaking, in the production of aluminum alloy die casting, the mold is long-term continuous production, so the temperature will not be low, but will reach a high point, so the mold steel must have a certain hardness, not stick mold.
2. Enough strength, hardness, plasticity, and heat resistance. Aluminum alloy die casting is the molten metal into the mold, so the mold steel must have the high temperature strength and toughness of a dog. 3. Good thermal conductivity. Briefly, the long-term exposure of the mold to between 600 and 700℃ at high temperature requires good thermal conductivity.

4.Good resistance to molten metal damage ability. Aluminum alloy die casting is also in a high temperature state, without any damage resistance to the mold is impossible to damage.

In the process of numerical control processing, due to the particularity of the material and process, aluminum alloy die casting needs to pay attention to several points. If we do not pay attention, the aluminum alloy die casting will be damaged. Aluminum alloy die-casting material control is less, the better, choose the appropriate cutting liquid, aluminum alloy die-casting should try to reduce the damage to the dense layer. The surface thickness of aluminum alloy die cast is about 1 mm thin dense layer. A porous structure of loose-like bread.

Aluminum alloy die-casting die is an essential tool in the die-casting process. Aluminum alloy die-casting technology is a step of metal production, involving mechanical, fluid mechanics, thermodynamics and other knowledge. There are many factors affecting die casting structure, injection speed, pressure, die temperature and molten metal temperature. In short, the aluminum alloy die-casting process is a very complex processing process.

The die is filled with molten metal. This work can be divided into three stages. di In one stage, the molten metal enters the aluminum alloy die chamber through the inner gate, then diffuses around the wall and returns to the gate. At this stage, the shell of the die cast has been formed. In the next stage, the molten metal is deposited on the shell surface for filling, expansion, and merging. The core of di stage is the continuous flow and filling stage of molten metal; in the third stage, aluminum alloy die is filled with molten metal, type cavity, pouring system and pressure chamber. Aluminum alloy die casting is equal everywhere, and the injection force continues to act on the liquid molten metal through the aluminum alloy die casting center until the molten metal solidifies