Release agents were applied to Copper alloy die-casting.

Plunger oil directly affects the performance of die-casting machine injection force and the inner quality of die-castings ,Plunger oil also directly affects the performance of piston head and cylinder wear and the equipment service life. DG series of plunger oil had excellent lubrication, ensure the perfect injection force, the uniform of injection, which reduce the porosity, ensure the quality of the die-casting. At the same time, the good oil film provides high quality protection for the plunger head and improve service life