The molten metal used in die-casting fills the mold cavity at a high speed, usually 10-50 meters/second, and some can exceed 80 meters/second. (The linear speed of the injection into the cavity through the inner gate - the inner gate speed), so the filling time of the molten metal is very short, and the mold cavity can be filled in about 0.01-0.2 seconds (depending on the size of the casting).