Heating for the sole purpose of hot working is excluded from the meaning of this definition.
Heat treatment involves a variety of processes in which the physical properties of a piece of metal may be altered by controlled heating and cooling.
Heat treatment is commonly used to change or intensify the color of a gemstone. The change alters a stone's structure and is usually permanent
Other Database Pages Exist for this Phrase:
Heat (Heat is Form of kinetic energy that flows from ...)
Combination (Combination denotes an options position in which ...)
Treatment (Treatment refers to means subjecting the ...)
Gemstone (Gemstone (Gem) is described as precious or ...)
Aging (Aging has something to do with a change in the ...)