High vacuum die casting technology
By using the vacuum casting control system, the mold cavity is always kept in a negative pressure state, from when the molten metal has the low-speed filling to the end of the die-casting process. As a result, the metal liquid filling resistance is greatly reduced, the sharp drop of the melt flow rate is avoided, and the mixing of the molten metal with the gas in the mold cavity is greatly reduced. High vacuum die casting technology is a casting process that can manufacture high-density castings of uniform internal structures and can prevent the occurrence of aluminum spray and casting burrs.
Ultra low speed laminar flow extrusion casting
By adopting an extremely low-pressure injection speed, the molten metal fills the mold cavity in sequence with an extremely low filling speed (<0.3m/s). The stable low-speed injection can smoothly discharge the gas in the mold cavity, thus avoiding the large amount of air entrainment caused by ordinary high-speed injection and greatly reducing the gas content of the castings. Meanwhile, during the solidification process of the castings, certain static pressure (up to 100Mpa) can be put on to supplement the solidification shrinkage of the molten metal, so as to obtain the very low gas content and extremely dense internal castings. Ultra low speed laminar flow extrusion casting is such a die casting process.
CNC high-pressure point cooling technology
After the aluminum liquid enters the cavity, the water flow is pressed into the cooling water pipe through the high-pressure control module, to help solve the problem that the mold is partially elongated and that the insert parts have an uneven temperature. The technology avoids problems such as hot cracking, aluminum sticking, shrinkage or deformation due to partially excessively high temperature.
Partial compaction pin technology
After the high-speed injection is completed and the pressurization is maintained for a period of time, the ingate will be completely solidified. When the thick part of the casting is solidified while no molten metal can be transferred from the ingate to supplement shrinkage, additional partial compaction forces will be activated, which will strongly compensate for shrinkage and flatten the pores. Partial compaction pin is such a process. It avoids the volume shrinkage occurring during the solidification of the molten metal in the thick part of the castings, avoids the defects of internal porosity and shrinks, and improves the compactness of the casting internal structure and the pressure resistance of the castings.