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[2] [4] He learned to make knives and at 13, in 1902, developed a method to heat-treat steel for hoes and other tools so that they would hold an edge longer. [2] Hoyt left Kansas in 1907 for the American northwest and eventually enlisted in the United States Navy. [2] He made his first knife in 1902 in Mountain Home, Idaho. [2]
Heat treating furnace at 1,800 °F (980 °C) Heat treating (or heat treatment) is a group of industrial, thermal 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 ...
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Operating a vacuum heat treating furnace, c. 1959–1962. A vacuum furnace is a type of furnace in which the product in the furnace is surrounded by a vacuum during processing. The absence of air or other gases prevents oxidation, heat loss from the product through convection, and removes a source of contamination
California is poised to pass the state’s first regulations to protect indoor workers from extreme heat — a policy that could be implemented later this summer.. A standards board at the ...
Temperatures continue to rise thanks to climate change. But state officials have moved glacially slow to put protections in place for people toiling during the summer at indoor workplaces like ...