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Advantages of opal quartz crucible

Release time:

2024-06-05 09:45

Quartz crucible has the advantages of high purity, strong temperature resistance, large size, high precision, good heat preservation, energy saving, and stable quality, and is more and more widely used. Quartz crucible detection is a very important link, quartz crucible detection is to the field detection direction!

1, quartz crucible can be used below 1450 degrees, divided into transparent and opaque. The semi-transparent quartz crucible produced by the arc method is an essential basic material for drawing large-diameter monocrystalline silicon and developing large-scale integrated circuits. Today, the world semiconductor industry developed countries have replaced the small transparent quartz crucible with this crucible. It has the advantages of high purity, strong temperature resistance, large size, high precision, good heat preservation, energy saving, and stable quality.

2, can not contact high frequency. At high temperatures, it is very easy to react with caustic and alkali metal carbonates.

3. Shi Ying crucible is suitable for melting samples with K2S2O7 and KHSO4 as flux and processing samples with Na2S2O7 (drying at 212 degrees first).

4. Quartz is brittle and fragile, so be careful when using it.

5, in addition to hydrofluoric acid, ordinary dilute inorganic acid can be used as a cleaning fluid. Quartz crucible domestic pull single crystal silicon commonly used 18 inch, 20 inch, 22 inch crucible, some manufacturers use 22 inch and above the crucible. At present, the main domestic crucible production enterprises to produce the crucible technology is more mature. The raw material quartz sand used in its production is imported from the United States, and high purity quartz sand is imported from Norway. There are also small factories that produce quartz crucibles with domestic materials that have a certain impact on the stability of monocrystalline silicon when pulling.

At present, the coating technology of crucible production has been adopted by most manufacturers. It is made of ordinary quartz sand crucible surface coated with a layer of barium dioxide solution, forming a dense layer. The reaction with the quartz crucible increases the crystallization rate.

　　Process flow:

High purity quartz sand → high purity graphite mold → vacuum charging molding → vacuum arc melting → natural cooling and demoulding → initial inspection of quartz crucible → cold working sand blasting, cutting, chamfering → secondary inspection of quartz crucible → super-dust-free cleaning, ultrasonic wave, high pressure spraying and automatic drying. Heating baking, spraying → quartz crucible three inspection → vacuum packaging → finished product storage.

How to choose your own quartz glass crucible

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