The mold is easy to corrode. What is the reason for the jam? There are three main reasons: 1: the inner door speed should not be too fast [preferably within 30-40m/S]! 2: The temperature of mold cavity and molten aluminum should not be too high! The mold cavity should have a cooling system [generally, the surface temperature of the mold cavity should not exceed 200-220℃]. The temperature of molten aluminum is generally 660-680℃. 3. The surface hardness of the mold cavity should generally reach HRC46-50! Special time can be used for surface titanium plating or soft nitriding! View original post >>