Precautions for the use of aluminum die-casting molds
Publish Time: 2024-09-29
1. Use of mold cooling system.Mold cooling water, when used correctly, not only prolongs the service life of the mold, but also improves production efficiency. In actual production, we often ignore its importance, and operators also save trouble. It is too troublesome to connect and connect, so they don't connect the cooling water pipe. Some companies even don't use cooling water when customizing molds to save costs, which has serious consequences. Mold materials are generally made of special mold steel after various treatments. Even the best mold steel has its limits, such as temperature.
When the mold is in use, if the mold temperature is too high, it is easy to cause cracks on the surface of the mold core early. Some molds even have large-scale cracks before more than 2,000 molds. Even the mold core has changed color during production because the mold temperature is too high. After measurement, it even reaches more than 400 degrees. Such a temperature is easy to crack when it encounters the state of mold release agent quenching, and the products produced are also easy to deform, strain, stick to the mold, etc. When using mold cooling water, the use of mold release agent can be greatly reduced, so that the operator will not use mold release agent to lower the temperature of the mold. Its benefits are to effectively extend the life of the mold, save the die-casting processing cycle, improve product quality, reduce the occurrence of mold sticking, tearing and aluminum sticking, and reduce the use of mold release agent. It can also reduce the loss of ejector and core caused by overheating of the mold temperature.
2. The mold must be preheated during the initial production process to prevent the cold mold from suddenly encountering hot metal liquid and causing cracks. More complex molds can be preheated with a blowtorch, liquefied gas, and mold temperature controllers with good conditions. Simpler molds can be preheated with slow pressure injection.
3. If the mold is equipped with neutron control, be careful to prohibit the signal line between the die-casting machine and the mold from having a joint. The reason is very clear. In daily production, it is difficult to avoid water on the signal line, or the place where the joint is wrapped is easily broken, which causes a short circuit with the machine tool. If a signal error is caused, the alarm will automatically stop and delay the time, and the signal will be disordered, causing the mold to be damaged. Causing unnecessary losses. The travel switch should be waterproof.
