How to improve the quality of zinc alloy die-casting molds in zinc alloy die-casting factories

　　1. Choose the appropriate die-casting machine

　　Die casting machine is a key equipment in die casting production, and its performance objectively determines the quality of die castings. The correct selection of die-casting machines is crucial for ensuring product quality, improving production efficiency, and reducing production costs. The performance of die-casting machines depends on two aspects.

　　Sufficient locking force: prevent the peak of metal melt pressure from causing flash and material flying.

　　Sufficient injection capacity: Ensure that the die casting does not cause overheating or excessive overflow of the mold, while also ensuring that the machine has sufficient capacity to transport enough molten metal and fill the mold cavity at the required speed in a short period of time.

　　2. Design of flow channels for die-casting molds

　　Due to the fact that zinc alloy must fill the mold cavity in a short period of time, the design and production of die-casting molds and their flow channel systems require much higher requirements than plastic molds. The flow channel system guides the metal solution to fill the mold cavity in a certain way. It plays an important role in the flow direction of the metal solution, pressure transfer, filling time, exhaust conditions, and mold temperature distribution. At the same time, it is also an important factor determining the quality of die-casting parts. The design principle of the flow channel system of die-casting molds should be from the gooseneck to the gate, avoiding sharp bends, and the surface of the flow path should be smooth to reduce resistance and maintain the flow speed of liquid zinc alloy.

　　3. Die casting mold temperature

　　The control of surface temperature of zinc alloy die-casting molds is very important for producing high-quality zinc alloy die-casting parts. Inappropriate mold temperature can lead to unstable dimensions of zinc alloy die castings, resulting in deformation, thermal pressure, mold sticking, surface depression, internal shrinkage, and hot bubbles during the production process. When there is a significant difference in mold temperature, it has varying degrees of impact on variables in the production cycle, such as filling time, cooling time, and spraying time. Therefore, the zinc alloy die-casting mold temperature machine is an important tool to improve the quality of zinc alloy die-casting parts. Die casting mold temperature machine can improve product quality and production efficiency, and reduce the damage of high-temperature metal alloy liquid to the mold.

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