button battery cr2032.Introduction to surface sandblasting technology in solar silicon cell industry

　　Sandblasting of silicon ingots is a cleaning process of silicon waste produced during the manufacturing process of silicon ingots. Silicon wafers are the basis of solar modules. They are made from silicon ingots through high-precision slicing technology after being cut and shaped. Damaged silicon wafers generated during the process must also be recycled. Solar cell manufacturing process Common solar cells are divided into two types: 1. One is solar crystalline silicon cells, which are made of polycrystalline silicon, and occasionally monocrystalline silicon is used. 2. One is solar thin film cells, which are the most widely used. In the production process of polycrystalline silicon solar products, the raw materials are first melted and then formed into silicon ingots through a crystallization process. Silicon ingots are cut and shaped, and then silicon wafers are made using high-precision slicing technology. The silicon wafers are then turned into cells through a multi-step production process that includes etching, doping, coating and laying electrical contacts. On this basis, solar cells are connected to each other and packaged to make solar modules, which are then sent to system integrators together with other system components for installation in solar systems.

　　1. Solar crystalline silicon cells. Understand the main manufacturing process of solar systems, silicon-silicon ingot-silicon wafer-cell-solar module-solar system. The two processes of silicon ingot and silicon wafer are two links that produce silicon waste. , Since pure silicon materials are very expensive, if these waste materials that were originally meant to be discarded can be cleaned up and recycled, the utilization rate of silicon raw materials can be improved, and material costs can be greatly saved. Wheelabrator's pressure blasting system is ideal for cleaning this recyclable silicon feedstock. 2. The solar thin film cell pressure sandblasting system can also be used in the manufacturing of thin film solar cell modules. Wheelabrator (Group) provides surface cleaning solutions for the solar manufacturing field. Application 1 – Sandblasting cleaning of silicon ingots in silicon ingots. Cleaning and disposal of silicon waste generated during the process. Silicon wafers are the basis of solar modules. They are made from silicon ingots through high-precision slicing technology after being cut and shaped. Damaged silicon wafers generated during the process must also be recycled. For the recycling and cleaning of silicon waste, the main task is to clean the dirt, impurities, and debris on the surface. Wheelabrator's pressure blasting system is the best solution for this type of cleaning application. Since the maximum material wear during the sandblasting process will reach 1mm, a large amount of dust will be generated, which places special requirements on the high wear resistance of the sandblasting equipment. What's more, Wheelabrator (Group)'s pressure sandblasting uses photographic tracking technology to search for inclusions and carry out targeted sandblasting. The fully automatic cleaning room consists of 2 sandblasting systems, camera system, parts loading/unloading system, turntable system and scrap conveyor belt

　　Application 2 - Sandblasting of cutting tools to clean residues on tools such as wire saws used to cut silicon ingots into silicon wafers. The thickness of the residual layer is very thin, but the area is large. Therefore, sandblasting equipment also needs to have special high wear resistance. Wheelabrator's through-pressure blasting systems are the best choice for cleaning residue from sawing tool surfaces.

　　Application Three - Sand Blast Cleaning of Coating Tools Sand blast cleaning of coating tools and stands used in the solar film manufacturing process for applying photovoltaic coatings to conductive glass substrates.

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