During die casting molding, the hot press injection machine used in the hot press injection process is a compressed air type hot press injection machine that pressurizes the melt with compressed air. It uses a constant temperature and airtight slurry barrel and compressed air to send the molten slurry into the injection mold.

Before molding, put the melted molten slurry into the slurry barrel, and heat it with electricity to make the molten slurry reach the required temperature. Outside the slurry barrel is an oil bath barrel that maintains a constant temperature. A node thermometer is inserted into the barrel, and a relay is connected to control the temperature. When forming, align the slurry inlet of the mold with the slurry outlet of the injection machine, step on the compressor valve, and the ejector rod of the compressing device compresses the mold, and at the same time, the compressed air enters the slurry barrel to press the slurry into the mold.

After maintaining for a short time, the slurry feeding is stopped and the compressed air is discharged. Open the mold, take out the hardened body, use a knife to cut off the injection port, and get a qualified green body after trimming.