Assertion: annealing | /r/MadeOf | heating
Facets:
value: above a charcoal or coal forge
type: LOCATION
value: by fire
type: OTHER
value: often
type: TEMPORAL
Source sentences:
text: Annealing is the term denoting heat treatment that consists of heating to and holding at a suitable temperature followed by cooling at an appropriate rate, primarily for the softening of metallic materials.
text: Tempering often consisted of heating above a charcoal or coal forge, or by fire, so holding the work at exactly the right temperature for the correct amount of time was usually not possible.