Die-casting release agent mostly using water-based version, should be considered first in the use of release agent, spray or brush, the thickness of the coating is not too thick but even, after diluent volatile then close mold for die casting, thereby avoiding the cavity or the increased amount of gas chamber pressure and the possibility of casting blowholes, avoid due to the increase of the gas to form a high backpressure, make forming difficult.

In the process, the exhaust system should be wrongly at any time to avoid the loss of the exhaust system due to the blockage of the release agent. At the same time, it should avoid the accumulation of the release agent at the turning and convex angles, so as to avoid the unclear outline of the die casting.