Customer-specific solutions for crystal growing systems (Czochralski process)
Crystal Growing systems are used for the production of monocrystalline Silicon. Innovative Crystal Growing solutions are possible by using of Siemens Automation & Drives Technology. A Crucible heating power supply is available and can be adapted according to the individual customer requirements.
Production machines for silicon ingots
Monocrystalline silicon Ingots are produced according to the Czochralski process, the ingot is pulled from the melt using a seed crystal. By rotating and slowly pulling the seed crystal's rod upwards - without losing contact to the melt - the solidifying silicon grows into a single crystal. The growing crystal reaches the desired diameter by a variable drawing speed with corresponding crucible temperature profile. High-precision Motion control with high accuracy is necessary to achieve a high quality of the ingot. The end product, the monocrystalline ingots, have a cylindrical shape and are the basis for the wafer production.
Benefits of the Siemens automation solution
High system availability due to reliable servo drive technology
Precise temperature and process control based on the SIMATIC S7-1500
Precise Motion Control functionalities for uniform growth of the ingots
Constant, consistent ingot quality
Cost-effective and economical production
Implementation of crucible heating with SIPS – Silicon Industry Power Supply
Besides the automation solution for the crucible and ingot - movement, SIEMENS also offers a solution for the crucible heating. The "SIPS" is a DC power supply suitable to be used as power supply input for crucible heating systems in the solar or semiconductor industry. The SIPS is an application-specific DC heating that can be adapted to meet customer requirements, for example, for the number and rating of the DC outputs
The SIPS meets the requirements of the monocrystalline pulling process:
Low total cost of ownership
High system availability without expensive interruptions thanks to modular and redundant design
High efficiency and optimal operating data even in the partial load range result in significant cost savings
Simplified implementation – communication via PROFIBUS / PROFINET
Low line harmonic distortions reduce additional operating expenditures for compensation systems
Long service life thanks to corrosion-free steel cooling system
Example application for crystal growing system
Do you have questions?
Are you interested in additional concepts and solutions for machines for the production of monocrystalline silicon? Then feel free to contact us at firstname.lastname@example.org. We are looking forward to hearing from you!