porosity (redirected from shrink-spot porosity)

porosity /po·ros·i·ty/ (por-os´it-e) the condition of being porous; a pore.

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po·ros·i·ty (p-rs-t, pô-)

n.

1. The state or property of being porous.

2. A structure or part that is porous.

3. A cavity or perforation.

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porosity (pōros´itē),

n the pres-ence of pores or voids within a structure.

porosity, back-pressure,

n porosity produced in castings resulting from the inability of gases in the mold to escape through the investment.

porosity, occluded gas,

n porosity produced by improper use of the blowpipe (i.e., heating the metal in the oxidizing portion of the flame).

porosity, shrink-spot,

n an area of porosity in cast metal that is caused by shrinkage of a portion of the metal as it solidifies from the molten state without flow of additional molten metal from surrounding areas.

porosity, solidification,

n porosity that may be produced by improper spruing or improper heating of the metal or the investment.

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porosity

the condition of being porous; a pore.