Engineering topics

Bakhtiyarov, Sayavur I.

Publications and source records attributed to Bakhtiyarov, Sayavur I..

2 records

NASA NTRS2008

Improved Sand-Compaction Method for Lost-Foam Metal Casting

An improved method of filling a molding flask with sand and compacting the sand around a refractory-coated foam mold pattern has been developed for incorporation into the lost-foam metal-casting process. In comparison with the conventional method of sand filling and compaction, this method affords more nearly complete filling of the space around the refractory-coated foam mold pattern and more thorough compaction of the sand. In so doing, this method enables the sand to better support the refractory coat under metallostatic pressure during filling of the mold with molten metal.

Bakhtiyarov, Sayavur I.↗

NASA NTRS2008

Improved Probe for Evaluating Compaction of Mold Sand

A nominally stationary tubular probe denoted a telescopic probe has been developed as an improved alternative to a prior movable probe used to evaluate the local degree of compaction of mold sand. The probe is inserted vertically to a desired depth in a sand-filled molding flask and the back pressure at the given rate of flow of air is recorded as a measure of the degree of partial impermeability and, hence, of the degree of compaction of sand in the vicinity of the probe tip.

Overfelt, Ruel A.↗