Low pressure die casting process.

We have to focus on certain issues while doing low-pressure die-casting like melt cleanliness, hydrogen content, furnace pressure, casting temperature, casting cycle timing, and Permanent Mold Casting and maintenance.  The low-pressure die casting process involves low-pressure air is introduced into a sealed tight furnace holding a tank of molten metal. This metal feeds up slowly through a riser tube and into the die cavity. After the Gravity Die Casting has solidified in the die, gradually, air pressure is released, which allows any residue molten metals still remaining in the riser to fall back into the tank for recycling. Then, when it is further cooled, the casting is removed. It is also known as counter pressure die-casting.