What are the special points to note when using aluminum alloy die-casting molds?

Die casting mold manufacturing is a tool for casting metal components, which is used to complete the die casting process on a specialized die casting forging machine.

Die casting mold manufacturing

The basic process of die casting is: the metal liquid is cast at low speed or high speed and filled into the mold cavity. The mold has a movable cavity surface, which is pressurized and forged with the cooling process of the metal liquid. This not only eliminates the shrinkage and porosity defects of the blank, but also makes the internal structure of the blank reach the broken grain state of the forged state.

The use of the cooling system for die-casting molds not only prolongs the service life of the molds, but also improves production efficiency when the cooling water for the molds is used correctly.

In actual production, we often overlook its importance, and operators also try to save trouble. If it is too troublesome to take over the cooling water pipes, some companies even do not take over the cooling water when customizing molds to save costs, resulting in very serious consequences.

Mold materials are generally made of special mold steel that has undergone various treatments. No matter how good the mold steel is, it has its usage limit, such as temperature. In the use state of the mold, if the mold temperature is too high, it is easy to cause early cracks on the surface of the mold core, and some molds may even have large areas of cracks that do not exceed 2000.

Even in the production of molds, due to the high temperature of the mold, the color of the mold core will change. After measurement, it can even reach 400 degrees or above. This temperature is prone to cracking when encountering the mold's quenching state, and the produced products are also prone to deformation. In the case of mold temperature overheating, it can greatly reduce the service life of the mold and also reduce the use of the mold core, thereby greatly reducing the use of the mold.

2. The mold must be preheated during the beginning of production to prevent the cold mold from suddenly encountering hot metal liquid and causing cracks. More complex molds can use spray lamps, liquefied gases and good mold thermometers, while relatively simple molds can use slow pressure jets for preheating.

3. If the mold is equipped with neutron control, be careful not to connect the signal wire between the die-casting machine and the mold. The reason is very clear. In daily production, it is difficult to avoid the signal wire from getting wet or easily breaking at the joint wrapping, which can to a short circuit with the machine tool.

If there is a signal error, the alarm will automatically shut down, delay the time, the signal will be disrupted, the mold will be damaged, causing unnecessary losses. Pay attention to waterproofing for the travel switch.