Pouring time of tractor box castings

The weight of tractor box castings is 205KG, and the estimated gating system mass is 20kg. According to the manual, for thin-walled complex castings with a weight less than 450kg, the pouring time can be obtained according to the empirical formula:


T – pouring time, s;

Total weight of molten metal in GL-1 cavity, kg:

S – coefficient related to wall thickness.

The wall thickness of tractor box castings is greater than 10ram. It can be seen that s can be taken as 2.2, so the pouring time is: