1. What are the main parts of the die casting machine?

Answer: the die casting machine is mainly composed of closing mechanism, injection mechanism, ejection mechanism, power (hydraulic) system, control system

It is composed of lubrication system, cooling system, etc.

2．What is the tonnage of die casting machine named after?

A: the tonnage of die casting machine is named after the maximum clamping force (clamping force). For example, 180t die casting machine, its maximum clamping force is 180 tons.

3. What is the function of the closing mechanism of the die casting machine?

Answer: the function of the closing mechanism is to install and fix the die and drive the moving die of the die-casting die to open or close the die.

4. What is the nominal pressure of the hydraulic system of the horizontal die casting machine?

A: it is 12 MPa (or 120 kg / cm2).

5. What is the function of the injection mechanism?

A: the injection mechanism is a key part of the die-casting process, which makes the metal liquid fill into the mold cavity at a certain speed and pressure from the injection chamber.

6. What are the cyclic action steps of the injection punch during normal production?

Answer: the steps are: slow speed (from the beginning of the injection head to crossing the pouring port of the injection chamber)cold chamber die casting machine

A rapid (the injection head allows the liquid metal to enter the runner and sprue)

II. Fast (make the liquid metal go straight into the inner gate from the beginning to fill the mold cavity)

Pressurization (when the liquid metal fills the mold cavity, the pressure of the injection cylinder increases rapidly to a certain value, and the filler metal is compacted and maintained for a period of time)horizontal die casting machine

Tracking (at the same time of mold opening, the injection head continues to move forward some distance with the surplus material of gate sleeve)

Return (the ejector head returns to the original state and completes a cycle)

7. What are the basic technical parameters of horizontal cold chamber die casting machine produced in China?

Answer: there are (1) clamping force (KN), (2) injection force (KN), (3) jacking force (KN), (4) jacking stroke (mm), (5) moving formwork stroke (mm), (6) die thickness (mm), (7) injection chamber diameter (mm), (8) injection specific pressure (MPA), (9) maximum projected area of casting (cm2), (10) maximum metal pouring volume (aluminum alloy) (kg) (11) Working pressure of the system (MPA), (12) spacing within the column (mm), (13) main motor power (kw).

8. What process parameters can be adjusted during die casting production?

Answer: (1) mold thickness, (2) mold closing speed, (3) mold opening speed, (4) mold closing time, (5) slow injection, (6) fast injection, (3) slow injection stroke, (8) fast injection stroke, (9) injection pressure (specific pressure), (10) tracking stroke, (11) tracking delay, (12) ejection stroke, (13) ejection speed, (14) ejection delay, (15) Cycle time, (16) aluminum temperature, (17) die temperature, etc.

9. What role does the nitrogen bottle of the die casting machine play?

Answer: it plays the role of energy accumulation. When fast injection is required, the accumulator quickly releases a large amount of hydraulic oil to accelerate the injection head. When pressurization is required, the accumulator instantly releases pressure to pressurize the injection head.

10. What is the function of lubrication system of die casting machine?

A: the lubrication system of the die casting machine is generally an independent system. By setting the automatic oil filling and lubrication for each sliding and rotating part of the closing mechanism at a certain interval, it plays a key role in ensuring the normal operation and service life of the machine.

11. What is the function and main composition of the hydraulic system of the die casting machine?

Answer: it provides power for the die casting machine to complete various actions, mainly composed of motor, oil pump, oil cylinder, various control valves and pipelines.

12. What is the function of the cooler?

Answer: it can cool and protect the hydraulic system.

13. Why should the ejector rod and ejector head be cooled with cooling water?

Answer: because the cooling water installed in the ejector head of the ejector rod has the following functions:

(1) Insulation heat is transferred from the ejector rod to the hydraulic system;

(2) Reduce the wear of the injection head at high temperature;

(3) Accelerate the cooling of the remaining material to prevent the remaining material from sticking to the injection head and opening the mold due to insufficient cooling of the remaining material.

14. What is the harm of high hydraulic oil temperature of die casting machine?

Answer: (1) the oil temperature is too high (more than 50 ℃), the characteristics of hydraulic oil are reduced, and the working pressure of the system is abnormal (low);

(2)Excessive oil temperature aggravates the internal leakage of oil cylinder and valve, resulting in unstable process parameters;

(3) High oil temperature accelerates the aging of sealing ring;

(4) If the oil temperature is too high, the hydraulic oil is prone to deterioration, leakage and loss.