- 行业: Mining
- Number of terms: 33118
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The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
A cast iron made by a prolonged anneal of white cast iron in which decarburization or graphitization, or both, take place to eliminate some or all of the cementite. The graphite is in the form of temper carbon. If decarburization is the predominant reaction, the product will have a light fracture, (whiteheart malleable); otherwise, the fracture will be dark (blackheart malleable). Pearlitic malleable is a blackheart variety having a pearlitic matrix along with, perhaps, some free ferrite.
Industry:Mining
A cast iron that gives a gray fracture due to the presence of flake graphite; often called gray iron.
Industry:Mining
A cast iron that has been treated while molten with a master alloy containing an element, such as magnesium or cerium, to produce primary graphite in the spherulitic form.
Industry:Mining
A cast shape, particularly of tough pitch copper, which has a cross section approx. square with tapered ends; designed for hot rolling into a rod for subsequent drawing into wire.
Industry:Mining
A cast, extruded or pressed, solid high explosive used to detonate less sensitive explosive materials.
Industry:Mining
A casting made by contacting it with something that will rapidly conduct the heat from it, such as a cool iron mold, or by sudden cooling by exposure to air or water.
Industry:Mining
A casting process that involves rigid attachment of the mold in an inverted position above the crucible. The melt is poured by tilting the entire assembly, causing the metal to flow along a connecting launder and down the side of the mold.
Industry:Mining
A casting technique in which an ingot, billet, tube, or other shape is continuously solidified while it is being poured, so that its length is not determined by mold dimensions.
Industry:Mining
A cast-steel cap covering and protecting the head of a concrete pile during driving.
Industry:Mining
