Afcil industries limited has a range of a breakdown agent for sodium silicate binder system to improve collapsibility. Afcibreak produced by co2 and self setting process retain their strength even at higher temperature. This retained strength makes core and mould knockout difficult.
Afcibreak is available in powder and liquid form.
Advantages are:
Reduces fettling time of cores and moulds.
Improves casting finish.
Reduces tendency of hot-tear and distortion of castings.
Produces sand amenable to reclamation.
Does not deteriorate on storage.
With proper addition reduces the percentage of binder addition required to produce satisfactory bond.
Imparts easy knockout properties
