1. What is die casting?

A: pressure casting is referred to as die casting for short. Die casting is the process of rapidly filling the mold cavity with liquid metal under pressure, changing from liquid to solid to form the required products.

2. What are the types of die casting?

A: the injection chamber can be divided into hot chamber die casting (commonly used for zinc alloy) and cold chamber die casting (commonly used for aluminum alloy). The pressure can be divided into low-pressure casting (such as automobile wheel shell) and pressure casting (such as pressure casting in our company). The exhaust mode can be divided into ordinary die casting and vacuum die casting.

3. What are the die casting alloy materials? What are their characteristics?

A: the commonly used materials suitable for die casting are zinc alloy, aluminum alloy, magnesium alloy and copper alloy. They have the following characteristics:

1). good fluidity in liquid state;

2). Relatively fixed melting point and freezing point;

3). small shrinkage;

4). it has certain high temperature strength;

5). it has good processability and corrosion resistance.

4. What are the main components of die cast aluminum alloy? What are the impurities ?

A: the main ingredients are: aluminum, silicon, copper, magnesium, manganese, zinc, etc.

Impurities include: iron, zinc, copper, tin, aluminum, sulfur, phosphorus, etc.

Different alloy grades have different requirements for their main components and impurity components.

5. What are the main defects of die castings?

A: there are under casting (insufficient material), cracks, deformation, cold separation, cold lines, shrinkage, pores (sand holes), mechanical strain, die sticking strain, delamination, wrong die, slag inclusion, surface cavitation, blistering, fleshy, lack of meat, etc.

6. What is the temperature of aluminum alloy liquid suitable for die casting production?

Answer: 650 ℃ ~ 720 ℃

7.What are the characteristics of die casting production?

Answer: (1) high production efficiency, which can realize mechanized or automatic production;

(2) Good product quality: A. high dimensional accuracy and high surface finish; B. Good mechanical properties; C. Good interchangeability; D. The contour is clear, the casting wall is thin and complex, and the pattern, pattern and text can obtain high definition;

(3) Good economic effect: A. excellent economic indicators; B. Low cost of die castings; C. It can be used as part combination;

(4) The investment cost of die casting equipment and mould is high, which is not suitable for small batch production.