Heat treating

Heat treating is a group of industrial and metalworking processes used to alter the physical, and sometimes chemical, properties of a material. The most common application is metallurgical. Heat treatments are also used in the manufacture of many other materials, such as glass. Heat treatment involves the use of heating or chilling, normally to extreme temperatures, to achieve a desired result such as hardening or softening of a material. Heat treatment techniques include annealing, case hardening, precipitation strengthening, tempering, normalizing and quenching. It is noteworthy that while the term heat treatment applies only to processes where the heating and cooling are done for the specific purpose of altering properties intentionally, heating and cooling often occur incidentally during other manufacturing processes such as hot forming or welding.

Physical processes

Metallic materials consist of a microstructure of small crystals called "grains" or crystallites. The nature of the grains (i.e. grain size and composition) is one of the most effective factors that can determine the overall mechanical behavior of the metal. Heat treatment provides an efficient way to manipulate the properties of the metal by controlling the rate of diffusion and the rate of cooling within the microstructure. Heat treating is often used to alter the mechanical properties of a metallic alloy, manipulating properties such as the hardness, strength, toughness, ductility, and elasticity.

Heat Treatment

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Heat Treatment is the second album by rock and roll singer-songwriter Graham Parker and The Rumour. A close follow-up to the debut album, Howlin' Wind, Heat Treatment was well received by critics and contains signature Parker songs like the rollicking title track, "Pourin' It All Out", and "Fool's Gold". "That's What They All Say" is a Dylan-esque putdown from a realist perspective, while "Turned Up Too Late" was perhaps Parker's most emotionally mature composition to date. "Black Honey" is a dark, downcast sequel to the debut's upbeat first track "White Honey". "Hotel Chambermaid" was covered many years later by Rod Stewart. The Rumour was credited on the back cover and the label, but not on the album's front cover.

In recent years Parker on his website has singled out this album as one of his least favorite of his own works, citing his inexperienced vocal technique, his rushed songwriting, and the stiff production by Robert John "Mutt" Lange.

In 2001, Vertigo/Mercury issued a remastered and expanded CD, including two tracks from The Pink Parker EP.