Chemically bondable foundry sand

Details Chemically bondable foundry sand Chemically bondable foundry sand

1982-03-19

1984-04-03

Poer, James

Compositions: ceramic

Ceramic compositions

Refractory

106 382, 106 383, 106 3835, C04B 3580

Patent

active

044408641

ABSTRACT:
A chemically bondable foundry sand comprising a mixture of sand, binder and a plurality of fibres intimately mixed and dispersed throughout the mixture. Cores and moulds made from such sand have improved fracture resistance. The mixture may comprise from 0.01 to 1.0 wt. % of fibres, the length/diameter ratio of each fibre may be at least 10 and the fibres may have a length of from 1 to 20 mm. The fibres may be glass fibres, organic fibres or natural fibres. The binder may comprise a silicate binder or an organic binder such as a phenolic binder or a furane binder.

REFERENCES:
patent: 2876511 (1959-03-01), Baugh
patent: 3442665 (1969-05-01), Muller et al.
patent: 4208214 (1980-06-01), Stein et al.

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