for influencing the hardening tendency of the mould material (influencing the hardening tendency of the binding agent only B22C1/16)

Full Title

Compositions of refractory mould or core materials; Grain structures thereof (refractory materials in general C04B35/00); Chemical or physical features in the formation or manufacture of moulds > characterised by additives for special purposes, e.g. indicators, breakdown additives > for influencing the hardening tendency of the mould material (influencing the hardening tendency of the binding agent only B22C1/16)