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During the 1990s, Crucible expanded its operations to Canada, working with General Motors, and building a 35,000-square-foot (3,300 m 2) facility with newly patented smelting and processing equipment costing $25 million.
A problem of coke was that it carried impurities such as sulfur, which degraded the quality of the steel. Although coke quickly became the dominant fuel for iron-smelting, in 1884 charcoal was still used to make ten percent of iron and steel in the US. The use of charcoal for steelmaking survived in the US on a small scale until 1945.
The antique trail covers 26 states, including Alabama, Texas and Vermont. Visitors can plan trips, shop online, and discover vintage collectibles through the online guide.
The company was founded in 1892 and was originally called Eastern Smelting. [1] In 1928, it was purchased by the Garfield family. Still located in Philadelphia, Garfield's headquarters house a facility that separates precious metals from waste material, as well as an on-site assay laboratory. The family-owned and operated refinery services a ...
Iron alloys are most broadly divided by their carbon content: cast iron has 2–4% carbon impurities; wrought iron oxidizes away most of its carbon, to less than 0.1%. The much more valuable steel has a delicately intermediate carbon fraction, and its material properties range according to the carbon percentage: high carbon steel is stronger but more brittle than low carbon steel.
Crucible is a census-designated place and coal town in Greene County, Pennsylvania, United States. Their post office opened in 1914. [ 4 ] The 2010 census reported Crucible with a population of 725. 70.6% of households are families, with an average family size of 3.02.
In a smelting furnace, up to four different phases might co-exist. From the top of the furnace to the bottom, the phases are slag, matte, speiss, and liquid metal. [3] Slag can be classified as furnace slag, tapping slag or crucible slag depending on the mechanism of production. The slag has three functions.
This cylinder, referred to as an electrode is then put into a large cylindrical enclosed crucible and brought to a metallurgical vacuum (0.001–0.1 mmHg or 0.1–13.3 Pa). At the bottom of the crucible is a small amount of the alloy to be remelted, which the top electrode is brought close to prior to starting the melt.
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