What Is The Difference Between A Die Casting Machine And An Injection Molding Machine

1. What is a die-casting machine?

A die casting machine is a machine used for pressure casting. There are two types: hot press chamber and cold press chamber. Later, they are divided into two types: straight and horizontal. The die-casting machine hydraulically injects the molten metal into the mold under pressure to cool and form, and after the mold is opened, a solid metal casting can be obtained, which was originally used for die-casting leads.

 

2. What is an injection molding machine?

Injection molding machines are also known as injection molding machines or injection machines. It is the main molding equipment for making thermoplastics or thermosets into plastic products of various shapes using plastic molding molds. The injection molding machine is designed to imitate the die-casting machine, because it is an imitation, the clamping part of the two is the same, but there are also differences.

 

3. The difference between die-casting machine and injection molding machine

1. The production process is different

The die casting machine melt is carried out in a furnace and then enters the syringe barrel in a near-self-flowing form, pushing the plunger to press the material into the mold cavity. The melt material of the injection molding machine is basically carried out in the barrel, and the material enters the injection barrel through the screw and plunger, and then the molten material is pressed into the mold cavity by piston movement. Die casting machines are all plunger type, and injection molding machines have plunger type and screw type and hybrid type.

2. The clamping strength is different

If the clamping part of 20 160T injection molding machines is used on the die-casting machine, then the result is four broken end plates, three broken middle plates, one broken tail plate, and broken columns. Compared with the injection molding machine, the injection speed of the die-casting machine is faster, and the impact force is much larger, the impact force is large, and the kinetic energy is naturally greater. The injection piston speed of the injection molding machine is 0.2 meters, and the injection piston speed of the die casting machine is several times higher than that of the injection molding machine, which is about five to ten meters.

From the comparison of piston speeds, it can be seen that the kinetic energy of the two is very different. For example, if you drive against a wall and step on the clutch, then the kinetic energy can only act on the wall, and if you don't step on the clutch, then the kinetic energy and the thrust of the engine will be superimposed. At this time, the hydraulic pressure and kinetic energy will be superimposed in the mold cavity, the kinetic energy is not large, because the injection speed is equivalent to the speed of human running, the key is to look at the buffer, the kinetic energy may be released in the mold cavity within one millisecond, of course, this is not absolute, the kinetic energy may also be released in the mold cavity within ten milliseconds, and the difference in instantaneous release power is extremely obvious.

3. The die-casting machine is a duplex pump

Compared with the die-casting machine with a double pump, the injection molding machine is a single pump, because the injection form of the injection molding machine is high pressure and high speed (relative to the displacement of the pump is high speed) at the same time, so the injection molding machine can only use a single pump large motor. Compared with the injection molding machine, which can only use a single pump and a large motor, the injection of the die-casting machine is driven by an energy storage machine, and the oil filling time of the energy storage is extremely short, which is completed in about four seconds, and the release time is extremely fast, about two percent. The other cylinders of the machine, high pressure and high speed do not appear at the same time, so the die-casting machine uses a double pump, uses a high-pressure small pump to deal with high pressure, and uses a low-pressure large pump to deal with high speed, theoretically speaking, the motor power of the die-casting machine is smaller than that of the injection molding machine.

4. There is a large difference in injection power

The die-casting machine is called injection, and the injection molding machine is called injection. If the injection velocity is 30 times the injection velocity, that is, the injection flow rate is 30 times the injection flow, assuming that the injection pressure of the two is the same, that is, the injection power must be 30 times the injection power. Therefore, if you want to drive the injection, you need to enlarge the motor by at least about 30 times.