A cooling water pressure closed-loop control system for Kyropoulos sapphire crystal growth equipment
A technology of sapphire and cooling water, which is applied in the direction of seed crystal remaining in the molten liquid, single crystal growth, and crystal growth during the growth period of use, which can solve problems such as large thermal shock and achieve the effect of reducing impact and improving quality
Active Publication Date: 2016-10-19
安徽格太信控科技有限公司
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Problems solved by technology
However, when the crystals are detached from the rest of the melt, there is usually a large thermal shock
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[0019] The present invention will be further described below in conjunction with specific embodiments, but it should be pointed out that the structures claimed in the present invention are not limited to the specific structures in the embodiments and the accompanying drawings. Other structural forms that can be deduced by those skilled in the art also fall within the scope of protection claimed by the present invention.
[0020] A cooling water pressure closed-loop control system for kyropoulos sapphire growth equipment, including a pressure sensor 4 installed at the cooling water outlet 3, which can detect the outlet pressure of the cooling water, and an electronic flow valve 5 installed at the cooling water inlet 2 , the flow rate of cooling water can be adjusted, and a PLC controller for centralized control, wherein the pressure sensor 4, the electronic flow valve 5 and the PLC controller are connected and communicated through signal lines.
[0021] The precision of the pre...
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The invention discloses a cooling water pressure closed-loop control system of kyropoulos sapphire crystal growth equipment. The system comprises a pressure sensor, an electron flow valve and a PLC controller, wherein the pressure sensor, the electron flow valve and the PLC controller are connected and communicated by a signal wire, the pressure sensor is arranged at the position of a cooling water outlet, and the electron flow valve is arranged at a cooling water inlet. Discharged water pressure changes are transmitted to the PLC controller by the pressure sensor, and then the PLC controller regulates the electron flow valve, so that the water pressure can be kept at a range of + / - 0.01 MPa of a required pressure, thereby forming the closed-loop control of the cooling water pressure. By using the system disclosed by the invention, the fed and discharged water pressure changes of a cooling water system of the kyropoulos sapphire crystal growth equipment are controlled within 0.01 MPa, so that the influence of hydraulic pressure fluctuations on the crystal growth process is reduced, and the quality of crystal growth is improved.
Description
technical field [0001] This patent relates to the field of sapphire crystal manufacturing by the kyropoulos method, in particular to a cooling water pressure closed-loop control system for sapphire crystal growth equipment by the kyropoulos method, and is applicable to other similar fields. Background technique [0002] Sapphire, also known as white sapphire, is the crystal material whose hardness is second only to diamond in the world. Due to its excellent physical, mechanical, chemical and infrared light transmission properties, it has always been an urgently needed material in the fields of microelectronics, aerospace, military industry, etc., especially Optical-grade large-size sapphire material has become a hot spot in research and development and industrialization at home and abroad in recent years due to its characteristics of stable performance, large market demand, comprehensive utilization rate and high product added value. [0003] The general process of sapphire ...
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IPC IPC(8): C30B17/00C30B29/20
Inventor 刘瑜陈晓玲
Owner 安徽格太信控科技有限公司