China's first photovoltaic polysilicon casting equipment, the "DZF260 Polysilicon Casting Furnace," developed by Changzhou Huasheng Tianlong Machinery Co., Ltd. with the support of Tsinghua University, has recently been manufactured in Jintan. At the beginning of this month, the expert team from Tsinghua University completed the initial debugging process, and the product quality has reached international advanced standards.
According to Tsinghua University experts, although China's polysilicon industry is not lagging behind in terms of timing, its development has been relatively slow. The industry still faces challenges such as outdated equipment, backward technology, and a lack of mature domestic production processes. Currently, most of the polysilicon casting equipment is imported from the U.S., Germany, and France, with each unit costing over 10 million yuan.
In line with the requirements of the "Eleventh Five-Year Plan" National Science and Technology Development Program, which emphasizes breakthroughs in renewable energy technologies like solar photovoltaics, the National Development and Reform Commission has identified polysilicon production equipment as a key area for development and foreign investment. This initiative aims to address the technical challenges of stability and reliability in photovoltaic polysilicon production equipment, optimize production processes, and ultimately achieve domestic manufacturing to break international monopolies.
Founded in December 2001, Changzhou Huasheng Tianlong Machinery Co., Ltd. is a high-tech enterprise based in Jiangsu Province, specializing in photovoltaic equipment research and development. It is also a recognized advanced science and technology enterprise in Changzhou City and serves as a doctoral student practice base for Tsinghua University. The company operates two photovoltaic manufacturing bases, holds 18 different types of patents, and has an annual production capacity exceeding 1,000 units. Its production capacity and new product R&D capabilities rank among the top three in the country.
The company has long-term technical cooperation with renowned universities and research institutes, including Tsinghua University and Tongji University. It has successfully undertaken eight national and provincial-level technological projects.
The photovoltaic silicon cell chain typically follows the sequence: raw material silica sand → polysilicon → monocrystalline silicon rod (polysilicon ingot) → silicon wafers → solar cells → modules. The "photovoltaic polysilicon casting equipment" developed by Changzhou Huasheng Tianlong is a critical component in the upstream part of this supply chain, specifically for producing polysilicon ingots.
Its successful development marks a significant technological advancement for China’s polysilicon industry. With a per-furnace production capacity of 270–3,000 kg and a monthly output exceeding 3,000 kg, the equipment significantly improves efficiency. The crystal furnace can produce 50 kg per batch, with a monthly output of 750 kg. Energy consumption is only 70% of that of traditional monocrystalline silicon furnaces, and the cost is less than two-thirds of imported alternatives—around 3 million yuan per unit.
This innovation not only enhances product quality but also strengthens China's position in the global market. It helps overcome foreign technical barriers, fosters the development of independent intellectual property, and ensures competitiveness on par with international leaders. The equipment features a long industrial chain, modular design, and strong technological diffusion effects, promoting growth in related industries such as machining, foundry, welding, and electrical control. It also brings high industrial value and supports the formation of specialized industrial clusters.
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