A Combined Crucible for Crystal Melting

Abstract

The invention discloses a crystal melting combined crucible, and relates to the field of artificial crystal. The two end surface inner steps of a rear plate body (2) and a front plate body (4) and the two end surface inner steps (12) of one-side plate body (3) and the other-side plate body (5) are in labyrinth occlusion to form a square cylinder; the lower end of the square cylinder is placed on a bottom plate (8); the lower end inner surface of the square cylinder is located on a protruding peripheral surface (13) of a bottom plate square protruding plate (11); a lower end locking mechanism is arranged outside the four corners of the bottom plate of the square cylinder respectively; and a fixing insertion plate (1) is clamped at the four butt-joint corners at the upper end of the square cylinder to form a locking structure at the upper end of the square cylinder. According to the invention, the connection at the butt joint is firm through the labyrinth butt-joint mode, the crystal solution does not flow outside along the gap for sure, and the phenomenon of collapse of the upper part of the crucible caused by the self weight of the crystal solution is effectively prevented; and compared with the prior art, the crystal melting combined crucible has the advantages of simple structure and high stability in crystal melting.

Description

【Technical field】 [0001] The invention relates to the field of artificial crystals, in particular to a combined crucible for melting crystals. 【Background technique】 [0002] It is known that there are many kinds of artificial crystals, such as monocrystalline silicon and polycrystalline silicon used in solar power generation, sapphire substrate materials used as LEDs, etc.; these artificial crystals are usually drawn or cast in a crucible during processing , Quartz crucibles are commonly used in the drawing or ingot casting of monocrystalline silicon and polycrystalline silicon; however, when sapphire ingots are used for LEDs, tungsten or molybdenum crucibles can withstand high temperatures exceeding 2000 degrees; especially for square crystal ingots, The square crucible formed by combining tungsten or molybdenum plates can omit the later trimming process of the cylindrical crystal ingot, that is, the four sides of the cylindrical crystal ingot need to be wire-cut to form a...

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Problems solved by technology

[0004] In addition, many patent applications also avoid the technical problem of cracking of the combined crucible by means of drainage grooves and crucible holders; it is not difficult to find that these solutions do not address the cracking of the combined crucible, that is, how to Ensure that the tungsten or molybdenum combination crucible does not crack or rarely cracks to solve the technical problem. After all, the remedy of the dead sheep cannot overcome the loss of the crystal solution and the damage to the equipment caused by the outflow of the crystal solution. Therefore, the inventor found through numerous tests that the above defects can be overcome. The only feasible way is to increase the firmness between the plates of the combined crucible to effectively prevent cracking

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