Application of mold temperature machine to die casting industry
The application of die-casting mold temperature machine in the die-casting industry also has a lot of space, especially in the manufacture of magnesium alloys and aluminum alloys. Uneven or inappropriate mold temperature will lead to unstable size of die-casting die-casting machine in the production process. In the middle, the casting is deformed, and defects such as heat pressure, a mold, a surface depression, a shrinkage hole, and a heat bubble are generated. It also has an impact on the production cycle, such as filling time, cooling time and spraying time, which produce unstable variables. In addition, the life of the mold will also be affected by the overheating and overheating, which will cause hot cracking of the expensive steel and accelerate its aging.
The heat transfer oil is passed into the mold to control the temperature of the mold. The temperature sensor detects the oil temperature or the temperature of the mold. If the temperature is lower than the set value, the control system turns on the heating element to heat the heat transfer oil; if the temperature is higher than the set value, the control system turns on the cooling element to cool the heat conduction. oil. The device adopts the automatic control mode, which can play a good temperature control effect, improve the internal and surface quality of magnesium alloy die-casting parts, and prolong the service life of the mold.
We all know: First, the die-casting mold is much larger than the size of the injection mold. The load required for heating and cooling is large, and the mold temperature machine with large heating power needs to be selected. Second, when the die-casting production, the temperature of the alloy solution is as high as five or six hundred degrees. The mold temperature should be stable between 100 and 300 degrees, and the mold temperature machine with large cooling power needs to be selected. Third, the die-casting mold has three parts: moving mold, fixed mold and slider, and temperature control is required for each part. Different requirements require multiple mold temperature machines to control the temperature. Fourth, the hot runner of the die-casting mold is relatively long and the use temperature is high. This requires the selection of high-temperature, high-pressure hot oil circulation pump heat transfer oil in the die-casting mold and the mold temperature machine. Circulation.