In casting process, gating system plays an important role to produce a high quality casting. A poorly designed gating system results in casting defects. ... The main function of gating system is to lead molten metal from ladle to the casting cavity ensuring smooth, uniform and complete filling.

What is the use of gate in casting?

Gate - The portion of the runner where the molten metal enters the mold cavity. Gates are formed into a mold extraneous of the desired final product and must be removed by machining once casting has cooled. Gates are arranged so molten metal is fed to the casting at a rate consistent with the rate of solidification.

What is the purpose of gating and Risering in casting process?

The gating system (the complete assembly of sprues, runners, gates and individual casting cavities in the mold) and the risers (openings in the top of a mold that act as reservoirs for the molten metal and prevent cavities in the casting as it contracts on solidification) must work well for shapes, complex or ...