Construct · 1 fields · 1 citations

blowhole: a standalone construct

One name. One construct. A landmark on the map.

● anchor · a standalone construct Nearest construct by meaning·not indexed
blowhole1 CONSTRUCTCasting blowholeCAMPBELL · GAS POROSITY

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Metal casting & fabrication

A gas cavity trapped in solidifying metal

In metal casting and fabrication, a blowhole is a cavity left in a casting or weld when gas (dissolved hydrogen coming out of solution, or air and mould gases that fail to escape) is trapped by the metal as it solidifies, leaving a void that weakens the part. Campbell's Castings treats this gas porosity and how melt handling and mould venting control it. The referent is a soundness defect defined by void size and distribution, unrelated to a whale's nostril beyond the shared image of a hole with air behind it.[1]

Unit
The size and distribution of gas voids in the solidified metal
Recovery means
Not applicable
Measured by
Detected by radiography and sectioning, and quantified by void size, count, and total porosity

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Nearby constructs

porosity3 fields · 3 citationsinvariant · one construct, three systemsapparatus4 fields · 6 citationsjingle · one word, four constructsbubble4 fields · 4 citationsjingle · one word, four constructs

References

  1. Campbell, J. (2003). Gas porosity. In Castings (2nd ed.). Butterworth-Heinemann. https://doi.org/10.1016/b978-075064790-8/50023-1

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