2013年8月23日星期五

Diamond powder automation

Diamond powder monocrystalline diamond coarse particles by crushing, classification derived. Generally, the moderately coarse material is crushed to a particle size of micron or submicron three basic mechanisms, namely crushing, high mechanical shock {(9m/see above) direct collision between moving particles and grinding mill is a roller the main role in crushing impact of the role of both the amount of low-speed mechanical crushing equipment. On methodological terms, using a ball mill for crushing process to produce diamond diamond powder is the most commonly used method,  High-speed impact of the collision volume of the particles produced crushing, shearing and grinding action and then the particles produce surface broken. This fragmentation of Abrasive grinding wheel production method is advantageous because it can produce the ideal particle shape. Jet mill, the biggest advantage is the speed limit from mechanical line, capable of producing a high flow rate, especially supersonic jet mill can produce several times the speed of sound velocity, which can have a tremendous momentum, it is easier to synthetic diamond and sub-micron ultra-fine powder. From crushed principle that this model is used for the production of diamond powder are more promising.Diamond powder particle size classification is very important in the production process a step. It involves diamond powder production efficiency and quality, currently the most widely used in a diamond powder particle size classification method is a natural sedimentation and centrifugation Diamond blade of powder production process. Natural sedimentation method is a direct application of Stokes' law separation method, according to the same proportion of the particles settling in the water due to different particle sizes are different principles, by controlling the sinking height of the classification particle size and deposition time, although the device Simple, easy operation, stable quality, but the production cycle is longer, labor inefficiency. To this end, many foreign manufacturers have developed automated grading equipment, the use of computer technology and frequency conversion control technology, set up automatic mixing, automatic pump feed, automatic and computer controlled four water circulation systems, digital design, precise control and energy-saving electricity, can not be compared with artificial high efficiency, high reliability and good handling. Than the artificial separation efficiency can be increased by 10 to 20 times, with a high degree of automation, fast sorting, sorting accuracy accurate, no impurity contamination, no one is interfering factors, product quality, stability, good reproducibility, labor intensity small business low labor costs, a large one-time feeding amount Ten significant advantages. In line with the powder industry in the future development direction.

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