Sapphire crystal growing furnace with spare seed crystals and crystal seeding method thereof
A sapphire crystal and growth furnace technology, applied in crystal growth, single crystal growth, single crystal growth, etc., can solve the problems of high operation requirements, heavy workload, disturbance, etc., and achieve low labor intensity, time saving and high safety Effect
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Embodiment 1
[0042] The seeding method of the above-mentioned sapphire crystal growth furnace carrying a spare seed crystal, the steps are as follows:
[0043] first step, such as figure 1Shown: Before seeding starts, set the rotating device 1 to be fixed horizontally, install the main seed crystal 5 and the spare seed crystal 9, and adjust the height difference between the plane where the lower end of the main seed crystal 5 is located and the plane where the lower end of the spare seed crystal 9 is located less than 0.2cm, to ensure that the error between the set value and the actual movement value of the main seed crystal 5 up and down during seeding is within a controllable range, which is convenient for the exchange and use of the main seed crystal 5 and the spare seed crystal 9, and at the same time the control system Data such as distance and weight are cleared;
[0044] The second step, such as figure 2 , image 3 Shown: At the beginning of seeding, use the position control dev...
Embodiment 2
[0049] The situation of "alternative melting and crystallization at the end" described in the fourth step of the above-mentioned embodiment 1 does not meet the set conditions, such as excessive melting or blown of the seed crystal, at this time, it is necessary to use the spare seed crystal, which means seeding failure Case. like Figure 4 to Figure 6 As shown, this embodiment is a method for using a spare seed crystal in a sapphire crystal growth furnace carrying a spare seed crystal in the present invention, and the specific steps are as follows:
[0050] The first step is to operate the up and down stroke mechanism 3 to control the rotation device 1, the main connecting rod 4, the main seed crystal 5, the spare connecting rod 8 and the spare seed crystal 9 to move vertically upward as a whole until the main seed crystal 5 leaves the main furnace cavity 7 and Make it stay in the auxiliary furnace chamber 6 above the main furnace chamber 7;
[0051] In the second step, use ...
Embodiment 3
[0057] like Figure 7 As shown, on the basis of the above-mentioned embodiment 2, a sealing control device 11 between the main furnace chamber 7 and the auxiliary furnace chamber 6 is further added. The main function of this device is to ensure the working space of the main seed crystal 5 and the spare seed crystal 9 They are completely independent, and can clear the control system when the main seed crystal 5 and the spare seed crystal 9 are seeded respectively.
[0058] In the implementation process of actually using the spare seed crystal 9, after the positions of the main seed crystal 5 and the spare seed crystal 9 are exchanged, the main furnace chamber 7 and the auxiliary furnace chamber 6 can be sealed and isolated by the sealing control device 11, and then the control system can be cleared. The historical distance and weight data are set as initial values, and no fine-tuning actions are required or reduced in the final realization of seeding, which improves the success...
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