welding furnace
81California College of the Arts — infobox University name= California College of the Arts motto= endowment= president= Michael S. Roth (Former) established= 1907 type= Private staff= faculty= 480 students= 1,670 undergrad= postgrad= colors= city= Oakland, California and San… …
82Electric arc — An electric arc is an electrical breakdown of a gas which produces an ongoing plasma discharge, resulting from a current flowing through normally nonconductive media such as air. A synonym is arc discharge. The phenomenon was first described by… …
83Carburization — (often referred to as carburizing) is a heat treatment process which iron or steel is heated to below the melting point in the presence of a solid, liquid, or gaseous material which decomposes so as to liberate carbon when heated to the… …
84Case hardening — or surface hardening is the process of hardening the surface of a metal, often a low carbon steel, by infusing elements into the material s surface, forming a thin layer of a harder alloy. Case hardening is usually done after the part in question …
85International Brotherhood of Boilermakers, Iron Ship Builders, Blacksmiths, Forgers and Helpers — Infobox Union| name= Boilermakers country= United States, Canada affiliation= AFL CIO members= 100,000+ (2006)ref|members full name= International Brotherhood of Boilermakers, Iron Ship Builders, Blacksmiths, Forgers and Helpers native name=… …
86List of problems solved by MacGyver — This is a list of problems that have been solved by the fictional character MacGyver from the television series of the same name. (This list is not yet comprehensive.) MacGyver employs his resourcefulness and his knowledge of chemistry,… …
87Ferrosilicon — Ferrosilicon, or ferrosilicium, is a ferroalloy an alloy of iron and silicon with between 15 and 90% silicon. It contains a high proportion of iron silicides. Its melting point is about 1200 °C to 1250 °C with a boiling point of 2355 °C. It also… …
88Silicon nitride — Preferred IUPAC name Silicon nitride …
89Annealing (metallurgy) — Annealing, in metallurgy and materials science, is a heat treatment wherein a material is altered, causing changes in its properties such as strength and hardness. It is a process that produces conditions by heating to above the recrystallization …
90Puddle (disambiguation) — Puddle may refer to: * Puddle, an accumulation of water on a surface * Puddle clay, a type of waterproof cement * Puddle (M. C. Escher), a woodcut by M.C. Escher * Weld puddle, a crucial part of the welding process * Puddle of Mudd, an American… …
