Nanjing Jingsheng: a sapphire crystal growth furnace for energy production
[Source: Gaogong LED 's " LED Good Products" magazine April issue (P30) reporter / Long Zonghui]
"Sapphire automated seeding is completely achievable." Li Hui, general manager of Nanjing Jingsheng Energy Equipment Co., Ltd. (hereinafter referred to as "Nanjing Jingsheng") said that automated seeding must ensure that the operation technology and procedures are not difficult, and there are Stable process and reliable feedback, but the premise of this is that the mechanical manufacturing level and process level of the equipment must reach a very stable level.
At present, the earliest equipment purchased by sapphire crystal growth enterprises in mainland China is the Russian bubble method. These devices are not highly automated, and often require long-term operation training, and must rely on certain crystal growth experience. Therefore, many domestic manufacturers who purchase imported crystal growth furnaces will have problems with low equipment utilization rate and difficult to control yield.
"The future market of sapphire substrates must be on the mainland." Li Hui said that sapphire is not the same as solar energy, and the solar market is abroad. In the Chinese mainland market, LED terminal applications are in the consumer field. The LED TV backlight and lighting market has great development potential. He is very optimistic about the future market potential of sapphire crystal growth furnace.
a good sapphire growth furnace
　　 "Involved in the LED sapphire crystal growth furnace industry is in response to customer requirements, the original intention of the development was to help customers to ensure equipment safety, can quickly achieve industrialization, the lowest comprehensive cost." Li Hui said that to achieve sapphire industrial equipment must be "to The fool-like direction is developing.
The reporter learned that many domestically produced equipment still need special operations, but often everyone will face different reactions when they face the same seeding screen. If you rely solely on experience, staff training will be very slow, and the productivity and cost of the company will be difficult to improve.
In September 2012, Nanjing Jingsheng exhibited its own 85kg-class soaking sapphire crystal growth furnace, which was independently developed. "We are trying to make the device a full fool."
Li Hui said that their equipment does not necessarily require operators to cite crystals on site. An engineer can control multiple devices through a computer or a smart phone, but there is still a certain distance from the "full fool", which is still involved in the equipment. And the stability of the process.
“We have a strong technical team in the US.†Li Hui revealed that relying on their decades of simulation experience, we have found the best solution for temperature gradient control.
The reporter learned that Nanjing Jingsheng's sapphire crystal growth furnace heating system does not use the traditional bird cage design, but divides the thermal field into upper, middle and lower sections. The most difficult place for crystal growth is to control the temperature gradient, and there are many factors that affect the temperature gradient, such as water flow, thermal field design, heaters, and so on.
At present, many manufacturers use a method to control the heater, adjust the water flow rate or design the insulation layer to a different number of layers in order to obtain an ideal temperature gradient. Li Hui said that this design is obviously too variable, and it is difficult for non-celebral professionals to operate on site.
“We use three-stage heating separately, so that the operator can better eliminate the influence of other deviations on the equipment yield. It is only necessary to adjust the heater power.†Li Hui said that using segmental cooling, crystal growth Time will be effectively shortened. For example, now 70 kg of soaking method crystal growth furnace crystal takes about 20 days, but Nanjing crystal rise 85 kg crystal growth furnace is only 17 to 17.5 days. “Because in the process of cooling the upper, middle and lower sections, the power itself is also declining.â€
"Because of the segment heating, it is necessary to separately configure the heater, power supply and control system, the price will be higher than the peers. But our comprehensive cost is very low." Li Hui said that because of the unique thermal field design, it is very It is easy to enlarge the kilogram level of the crystal growth furnace by partial replacement.
Unfinished , please refer to the April issue of Gaogong LED 's " LED Good Products" magazine.
"Sapphire automated seeding is completely achievable." Li Hui, general manager of Nanjing Jingsheng Energy Equipment Co., Ltd. (hereinafter referred to as "Nanjing Jingsheng") said that automated seeding must ensure that the operation technology and procedures are not difficult, and there are Stable process and reliable feedback, but the premise of this is that the mechanical manufacturing level and process level of the equipment must reach a very stable level.
At present, the earliest equipment purchased by sapphire crystal growth enterprises in mainland China is the Russian bubble method. These devices are not highly automated, and often require long-term operation training, and must rely on certain crystal growth experience. Therefore, many domestic manufacturers who purchase imported crystal growth furnaces will have problems with low equipment utilization rate and difficult to control yield.
"The future market of sapphire substrates must be on the mainland." Li Hui said that sapphire is not the same as solar energy, and the solar market is abroad. In the Chinese mainland market, LED terminal applications are in the consumer field. The LED TV backlight and lighting market has great development potential. He is very optimistic about the future market potential of sapphire crystal growth furnace.
a good sapphire growth furnace
　　 "Involved in the LED sapphire crystal growth furnace industry is in response to customer requirements, the original intention of the development was to help customers to ensure equipment safety, can quickly achieve industrialization, the lowest comprehensive cost." Li Hui said that to achieve sapphire industrial equipment must be "to The fool-like direction is developing.
The reporter learned that many domestically produced equipment still need special operations, but often everyone will face different reactions when they face the same seeding screen. If you rely solely on experience, staff training will be very slow, and the productivity and cost of the company will be difficult to improve.
In September 2012, Nanjing Jingsheng exhibited its own 85kg-class soaking sapphire crystal growth furnace, which was independently developed. "We are trying to make the device a full fool."
Li Hui said that their equipment does not necessarily require operators to cite crystals on site. An engineer can control multiple devices through a computer or a smart phone, but there is still a certain distance from the "full fool", which is still involved in the equipment. And the stability of the process.
“We have a strong technical team in the US.†Li Hui revealed that relying on their decades of simulation experience, we have found the best solution for temperature gradient control.
The reporter learned that Nanjing Jingsheng's sapphire crystal growth furnace heating system does not use the traditional bird cage design, but divides the thermal field into upper, middle and lower sections. The most difficult place for crystal growth is to control the temperature gradient, and there are many factors that affect the temperature gradient, such as water flow, thermal field design, heaters, and so on.
At present, many manufacturers use a method to control the heater, adjust the water flow rate or design the insulation layer to a different number of layers in order to obtain an ideal temperature gradient. Li Hui said that this design is obviously too variable, and it is difficult for non-celebral professionals to operate on site.
“We use three-stage heating separately, so that the operator can better eliminate the influence of other deviations on the equipment yield. It is only necessary to adjust the heater power.†Li Hui said that using segmental cooling, crystal growth Time will be effectively shortened. For example, now 70 kg of soaking method crystal growth furnace crystal takes about 20 days, but Nanjing crystal rise 85 kg crystal growth furnace is only 17 to 17.5 days. “Because in the process of cooling the upper, middle and lower sections, the power itself is also declining.â€
"Because of the segment heating, it is necessary to separately configure the heater, power supply and control system, the price will be higher than the peers. But our comprehensive cost is very low." Li Hui said that because of the unique thermal field design, it is very It is easy to enlarge the kilogram level of the crystal growth furnace by partial replacement.
Unfinished , please refer to the April issue of Gaogong LED 's " LED Good Products" magazine.
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