Method of heat retention in a blind riser

Details Method of heat retention in a blind riser Method of heat retention in a blind riser

1983-09-12

1986-01-28

Godici, Nicholas P.

Metal founding

Process

Shaping liquid metal against a forming surface

164360, B22D 2704

Patent

active

045665184

ABSTRACT:
A method of the heat-retention in a blind riser in metal casting by using a sand mould, characterized in that an exothermic moulded composition is arranged in a drag holding cavity below a blind riser in the cope of the mould or in the neighborhood of the blind riser before the melt is poured, and thereafter the melt is poured to cause the exothermic moulded composition to float up into the blind riser to retain heat therein.

REFERENCES:
patent: 1239586 (1917-09-01), Gebhard
patent: 2334701 (1943-11-01), Galvin et al.
patent: 2335008 (1943-11-01), Hites
patent: 2568428 (1951-09-01), Billiar
patent: 2791815 (1957-05-01), Kinnear
Chistyakov, V. F. et al., "Use of Exothermic Briquets in Steel Teeming", in Metallurgist, vol. 18, No. 3-4, Mar./Apr. 1974, pp. 188-190.

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