Method determining the suitability of metal compositions for cas

Details Method determining the suitability of metal compositions for cas Method determining the suitability of metal compositions for cas

1976-03-10

1977-03-15

Roethel, John E.

Metal founding

Process

With measuring, testing, inspecting, or condition determination

73 59, B22D 102

Patent

active

040119017

ABSTRACT:
A process is provided by determining the castability of a metallic composition comprising a metal matrix containing secondary solid and discrete degenerate dendrites. The composition is heated and a calibrated probe is contacted under force to the surface of the composition and a parameter of distance the probe travels into the composition as a function of the force is determined. The composition is castable when the parameter measured corresponds to the condition when at least about 50 wt. % of the secondary solid is liquified and between about 25 and 90 wt. % of the total composition is liquified.

REFERENCES:
patent: 3693412 (1972-09-01), Kalousek
patent: 3803903 (1974-04-01), Lin
patent: 3948650 (1976-04-01), Flemings et al.
patent: 3951651 (1976-04-01), Mehrabian et al.

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