A quartz crucible is a container made of high-purity quartz sand that is shaped by a mold and made at high temperatures using the electric arc method. It is characterized by high-temperature resistance, long service life, and high purity, and is mainly used as an auxiliary consumable for drawing single-crystal silicon rods for semiconductors and solar energy. It can be used below 1450°C and is divided into two types: transparent and opaque. The translucent quartz crucible is an essential basic material for drawing large-diameter single-crystal silicon and developing large-scale integrated circuits. Depending on the formulation process, quartz crucibles are generally produced and molded using either slurry injection or solidification. These two production processes are largely the same. However, due to certain differences in production methods, the two processes are still different in the selection of supporting equipment. Its production process is described below.

The following is a list of contents:

• Slurry production process

• Injection Coagulation Process

• Comparison of the two processes

Slurry production process

Slurry molding has a long history in the production process of ceramics, is traditional and relatively easy to master, and is the most common production molding method used today. The slurry method is commonly used in the production of quartz crucibles. The general production process of the slurry method has the following steps. First, is injection molding. Second, disengage the mold. Third, flip. Fourth, curing. Fifth, initial inspection. Sixth, repairing. Seventh, drying. Eighth, calcination. Ninth, trimming. Tenth, final inspection. Finally, packaging. The main supporting production equipment of injection method production includes stainless steel mold, cantilever suction cup crane, curing oven, preliminary inspection line, cantilever suction cup crane, less air dryer, cantilever suction cup crane, calcining oven, cantilever suction cup crane, trimming machine, cantilever suction cup crane, final inspection into the billet table, final inspection turning machine, light inspection rotary table, light final inspection table, final inspection out of the billet line, cantilever Suction cup crane, etc.

Injection Coagulation Process

The injection molding method has just emerged in the production of quartz crucibles, and the process is relatively difficult and not easy to master, so it is relatively little used in the production process of quartz crucibles. However, compared with the injection method, this method can greatly reduce the time to detach the model and improve the efficiency of detachment, which has certain advantages in mass production. Due to its advantages in mass production, it is the future development direction of the production process. The general production process of the injection coagulation method has the following steps. First, is injection molding. Second, disengage the mold. Third, flip. Fourth, initial inspection. Fifth, repair the blank. Sixth, drying. Seventh, calcination. Eighth, trimming. Ninth, final inspection. Finally, packaging. The main supporting production equipment of the condensation method includes stainless steel mold, cantilever suction cup crane, preliminary inspection line, cantilever suction cup crane, less air dryer, cantilever suction cup crane, calcining furnace, cantilever suction cup crane, trimming machine, cantilever suction cup crane, final inspection into the billet table, final inspection turning machine, light inspection rotary table, light final inspection table, final inspection out of the billet line, and cantilever suction cup crane.

Comparison of the two processes

The two processes for producing quartz crucibles are now compared. Since the injection molding method relies on the gypsum mold to absorb water for drying, longer time off the model and lower productivity. The solidification method uses a steel mold, but the product is equipped with an additive in the product ingredients, and the blanks can be solidified quickly during the production process to improve the strength, and it is easy to release the mold quickly, and the strength of the blanks is higher after the release, and it does not need to be cured through the curing oven. However, in the calcination process, these organic additives will decompose and volatilize, thus reducing the density and strength of the product. At present, the domestic method to improve the density and strength of the finished product has been solved. The above comparative analysis shows that the two production processes use the same equipment, only the injection method does not require curing ovens to cure the billet, and the process and other supporting equipment are the same.

In recent years, the application of quartz glass has gradually become common. To ensure the quality of quartz products, the company and the product supervision department should keep up with the times, do sufficient risk analysis, improve inspection standards, and finally improve product quality and ensure product safety for people to use. After reading the above, if you are interested in quartz crucibles, you can visit our company's website https://www.luverrequartz.com/, we are looking forward to your arrival.