Features and principles of cold chamber die casting machine

Today we will talk about the characteristics and principles of cold chamber die casting machines.

Die-casting machines are widely used in the mass production of non-ferrous metal castings such as aluminum, zinc, copper and other industries in automobiles, motorcycles, instrumentation, hardware and other industries. Computer program control; Hydraulic drive; Crank expansion structure; Four-bar piloted elastic stress frame; Large locking force, fast speed and reliability; Constant and effective hydraulic pressure boosting and injection system; The accumulator and injection frame are composed separately; The injection rate exceeds 4M /s, the minimum boost time is less than 30ms. The die-casting machine has superior performance, high production efficiency and stable operation. It has advantages in Chinese technology.

Cold chamber die casting machines are ideal for high melting point metals such as aluminum. In this process, the metal is liquefied at extremely high temperatures in a furnace and then poured into a cold room to be injected into a mold.

Basic components of a cold chamber die casting machine During a cold chamber die casting machine, a molten charge consisting of more material than is required to fill the casting is scooped from the crucible into a shot sleeve where , a hydraulically operated plunger pushes the metal into the die. The extra material is used to force extra metal into the mold cavity to compensate for shrinkage that occurs during solidification.

The main components of the cold chamber die casting machine are shown below. This type of machine can achieve injection pressures in excess of 10,000psi or 70,000KPa. Operation sequence of the cold chamber die casting process The mold is closed and the molten metal is scooped into the cold chamber shot jacket. The plunger pushes the molten metal into the mold cavity, where it maintains pressure until it solidifies. The mold opens and the plunger advances to ensure that the casting remains in the ejector mold. The core, if any, retracts. The ejector pin pushes the casting out of the ejection half of the mold and the plunger returns to its original position.