Aluminum alloy castings are widely used in aerospace, machinery, vehicles and many other industries, and their compactness requirements are getting higher and higher. Aluminum alloy die casting manufacturers are also trying to improve compactness in a variety of ways, including vacuum die casting.
Vacuum die casting method includes two ways, one is chilled exhaust tank method, the other is vacuum valve method. The chilled exhaust chute method uses a thin and wide rubbery exhaust chute, which is connected with a vacuum pump or a vacuum tank. Aluminum alloy liquid prepared by die-casting manufacturer flows into the exhaust slot and solidifies rapidly and blockages the airway to prevent alloy liquid from entering the vacuum pipeline. With this method, the structure is simple, the cost is low and the application is extensive, but the vacuum in the cavity fluctuates greatly and the stability is poor.
The vacuum valve method uses a special blocking net, which is mounted on the parting surface of the die and utilizes the inertial closing spool flowing in the metallurgical industry. The vacuum valve method used by Shandong Aluminum Alloy Die Casting Factory has high vacuum degree, stability, flexible exhaust duct setting, and can also be installed on the machine pressure chamber.
Aluminum alloy castings are die castings with high precision and accurate size. It is a good choice to make automobile parts. The manufacturer will give you a brief introduction to the production process of aluminium alloy die castings, so that you can have a deeper understanding of it.
Generally speaking, the production of aluminium alloy castings needs four fires, namely annealing, normalizing, quenching and tempering. In the process of die casting, quenching and tempering are very important and can not be lacked. In the process of aluminium alloy die casting, the worker first fills the metal liquid into the cavity of the die through low or high speed. The active cavity surface in the die will be forged under pressure with the cooling of the metal liquid. In this process, the shrinkage defect of the blank can be eliminated, and the inner structure of the blank can reach the broken grain as forged.
If you don't know enough about the production process of Shandong aluminium alloy die casting, we will understand it through a simple diagram: die casting machine debugging - die casting die installation - coating preparation - die preheating, coating - adjusting the release dose and injection position - closing (closing) - casting injection - holding - opening (taking out casting).