Sapphire Dan Changjing Technological Development

Since 1885 by the Fremy, Feil and Wyse use oxyhydrogen flame melting natural

sapphire dan changjing technological development

ruby ​​powder and potassium dichromate was made ​​a sensational " Geneva rubies " artificial growth sapphire studies so far more than 100 years of history. In the meantime, in order to adapt the development of science and technology and industrial production for the sapphire crystal quality , size and shape of the specific requirements, in order to improve the yield of the sapphire crystal,utilization,and reduce costs, the growing method and the sapphire related theories Numerous studies , with remarkable results. Has been a high level of technology and greater production capacity , ancillary services whom the crystal growth equipment - crystal furnace also will get a rapid development. With the application of sapphire crystal rapid expansion of the market,their equipment and technology is also the last century has made rapid development.Crystal sizes from 2 -inch expanded to the current 12 inches.

Low-cost, high-quality large-size sapphire single crystal growth has become an urgent task facing.Overall, sapphire crystal growth method can be divided into solution growth , melt growth , the growth of three kinds of gas , which has a melt growth method due to fast growth rate , high purity and crystal integrity and good features , but have become is the preparation of large-size and the specific shape of the crystal crystal growth method most commonly used . Currently available to melt growth method to artificial sapphire crystal growth methods include flame fusion method, Czochralski method , zone melting method, guided mode method, moving crucible method, heat exchange, the temperature gradient method, Kyropoulos law. The Kyropoulos grown sapphire crystal craft about the current market share of 70%. LED sapphire substrates in crystal technology is part of a developing extreme , since the confidentiality of the crystal growth technology , the majority of the crystal growing apparatus according to customer requirements are customized according to the technical characteristics , or to use other transformation from the crystal growing apparatus . Here are some current international mainstream sapphire crystal growth method .

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Molybdenum Furnace And Sapphire Dan Changjing

This product uses the vertical furnace, vacuum or protective atmosphere at high

sapphire dan changjing

temperature under conditions of decreased type crystal growth, for 2-inch sapphire single crystal growth, the substrate for an LED.

Technical Parameters
1 Power: 40KW
2 Power supply voltage: 380V 50HZ
3 Maximum temperature: 2200 ℃
4 Ultimate vacuum: 6 * 10-3Pa
5 Crucible size: Ф80 × 120mm
6 Temperature measurement system: Thermocouple + color infrared analyzer
7 Pressure rise rate: 2Pa / hour
8 Crucible displacement speed: Slow 0.2-5mm / hour, fast 120mm / min
9 The crucible maximum displacement: 200mm
10The furnace inflation pressure: ≤ 0.06Mpa
11Atmosphere control: realize the set automatically within the furnace pressure control

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