Wheel must be used with safety guards. The actual rotational axis of the wheel and its axis of rotation through the center of mass deviation from parallel state called static unbalance wheel. This is usually due wheel uneven density, both ends of the hole and the surface is not parallel or coaxial cylindrical deviation has caused.
2013年9月3日星期二
Boron nitride thermal stability and good wear resistance and chemical stability
Boron nitride fibers Uses: As the boron nitride thermal stability and good wear resistance and chemical stability, can be used as a temperature sensor sets, rockets, and the plasma jet furnace combustion chamber liner material; as ceramic matrix composites enhancer, missiles and aircraft antenna window parts, electrical insulation, protective clothing, as well as re-entry parachute rocket nozzles nose cone and other materials; for high temperature lubricants, mold release agents, polycrystalline diamond insulation materials and semiconductors solid dopant material. Since boron nitride thermal stability and good wear resistance and chemical stability, can be used as a abrasive wheels sensor sets, manufacture high temperature objects, such as rockets, combustor liner and the plasma jet furnace materials. Can be used for high-temperature lubricant, release agent, high abrasive grinding and a semiconductor material doped with a solid phase. Hexagonal boron nitride into a cube, can be converted into a fibrous powder, so that more extensive use, can be used as super-hard material, for electrical insulation, antenna windows, protective clothing, as well as the re-entry parachute rocket nose cone nozzle and so on.
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