- 行业: Mining
- Number of terms: 33118
- Number of blossaries: 0
- Company Profile:
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 wire rope comprising 7 wires of the same size covered by 12 wires alternately large and small.
Industry:Mining
A wire rope designed to give a greater wearing surface than ordinary round ropes and yet have about the same strength and flexibility. They have roughly 50% more wearing surface than ordinary round ropes, owing to the Lang lay of wires.
Industry:Mining
A wire rope designed to obviate spinning due to untwisting. It is formed by a series of layers of strands built around a center fiber core. Each layer of strands is given a lay opposite to that on which it is built, each layer thus tending to impart its own twist that is cancelled by the next layer. Therefore, this rope can be used for sinking or where a free load is to be lifted. The stretch with a multiple strand rope is not so great as with round strand and flattened strand ropes.
Industry:Mining
A wire rope made from wires that have been softened by annealing.
Industry:Mining
A wire rope that has six or eight strands each, having a large center wire covered by nine small wires that are covered in turn by nine large wires.
Industry:Mining
A wire rope with the inner and outer layers consisting of the same number of wires, the outer being larger and lying in the grooves or valleys between the inner wires. Both layers are stranded or laid in one operation. Extra support is given to the outer wires by this method and the wires are in line contact throughout and there is no internal crosscutting of wires.
Industry:Mining
A wire that explodes upon application of current. It takes the place of the primary explosive in an electric detonator.
Industry:Mining
A wire used by founders to make a hole in a sand mold for the escape of air or gases.
Industry:Mining
A wire-rope capping method in which a rope-clamping device is used instead of a capping. The end of the rope is turned back upon itself over grooved block with a suitable radius, and the short end of the rope is clamped on to the main rope above the block.
Industry:Mining
