China's first photovoltaic polysilicon casting equipment, the "DZF260 Polysilicon Casting Furnace," developed by Changzhou Huasheng Tianlong Machinery Co., Ltd. in collaboration with Tsinghua University, has recently been manufactured in Jintan. At the start of the month, the expert team from Tsinghua University completed the initial debugging, and the quality of the equipment has reached international advanced standards.
Experts from Tsinghua University note that although China's polysilicon industry is not lagging behind globally, its development has been relatively slow. The industry still faces challenges such as outdated production equipment, backward technology, and a lack of mature and stable casting equipment and process technologies. Currently, most of the polysilicon casting equipment needed for production is imported from companies in the U.S., Germany, and France, with each unit costing over 10 million yuan.
According to the National Science and Technology Development Plan under the "Eleventh Five-Year Plan," key technologies for renewable energy utilization, including solar photovoltaic power generation, must be breakthroughs to achieve low-cost, large-scale, and industrialized use. As part of this initiative, polysilicon production equipment is designated as a priority product for development and foreign investment encouragement by the National Development and Reform Commission. This aims to address the stability and reliability of photovoltaic polysilicon production equipment, optimize production processes, and ultimately achieve domestic manufacturing to break the international monopoly.
Founded in December 2001, Changzhou Huasheng Tianlong Machinery Co., Ltd. is a professional R&D company specializing in photovoltaic equipment. It is recognized as a high-tech enterprise in Jiangsu Province, an advanced science and technology enterprise in Changzhou City, and a doctoral student practice base at Tsinghua University. The company operates two manufacturing bases, holds 18 different types of patents, and has an annual production capacity of over 1,000 units. Its production capacity and new product R&D capabilities rank among the top three in the country.
The company maintains long-term technical cooperation with renowned domestic universities and research institutes, including Tsinghua University and Tongji University. It has successfully undertaken eight national and provincial-level technological research projects.
The photovoltaic silicon cell chain typically follows the sequence: raw material silica sand → polysilicon → monocrystalline silicon rod (polysilicon ingot) → silicon wafers → solar cells → photovoltaic modules. From an industry chain perspective, the "photovoltaic polysilicon casting equipment" developed by Changzhou Huasheng Tianlong is a critical component in the upstream of the supply chain, specifically for producing polysilicon ingots.
The successful development of this equipment marks a significant technological advancement for China’s polysilicon industry. It will benefit downstream manufacturers by improving production efficiency and reducing costs. Each furnace can produce between 270 to 3,000 kg per batch, with a monthly capacity exceeding 3,000 kg. The crystal furnace can produce 50 kg per batch, with a monthly output of 750 kg. The energy consumption is only 70% of that of monocrystalline silicon furnaces, and the cost is less than two-thirds of imported equipment, priced at around 3 million yuan.
This innovation not only enhances product quality and ensures reliability but also strengthens China's position in the global market. It helps overcome technical barriers imposed by foreign companies, fosters the development of proprietary technologies with independent intellectual property rights, and enables Chinese enterprises to compete on par with international leaders in photovoltaic equipment.
The complete equipment industry chain features a long production cycle, modular design, and strong technological diffusion effects. It promotes the growth of related industries such as machining, foundry, welding, and electrical control systems, offering high industrial added value and contributing to the formation of specialized industrial clusters.
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