太钢助力我国光伏多晶硅核心装备实现国产化
单重8吨以上N08120合金宽厚板全球首发

On a certain date, a reporter from China Metallurgical News learned from China Baowu Taiyuan Iron and Steel (Group) Co., Ltd. that Qinghai Asia Silicon Industry Semiconductor Co., Ltd. (hereinafter referred to as Asia Silicon Industry) sent a letter of thanks to Taiyuan Iron and Steel at the beginning of the month, expressing gratitude for Taiyuan Iron and Steel's outstanding contribution to the timely and successful commissioning of the first domestically produced photovoltaic polysilicon core equipment, the cold hydrogenation reactor.

It is reported that in the month of the year, China's first set of photovoltaic polysilicon core equipment, the cold hydrogenation reactor, was successfully and safely put into operation on time at Asia Silicon Industry, using entirely domestically produced materials. This achievement marks a transformation from reliance on imports to domestic self-supply, making it a milestone event in the construction of China's clean and renewable energy industry, and holds strategic significance for promoting the development of the new energy industry. As of now, the equipment has been operating smoothly.

Today, the photovoltaic industry has become a pillar of China's new energy sector. China's photovoltaic industry has maintained global leadership for many years in terms of technological capabilities, power generation, and installed capacity, with a broad market outlook. The demand for key materials in photovoltaic conversion, such as polysilicon, has also surged rapidly. As market competition intensifies, the core equipment for polysilicon production, the cold hydrogenation reactor, is evolving towards larger size and higher parameters. This development necessitates the rapid large-scale supply and upgrading of key materials, such as iron-nickel-based alloys, with requirements for greater thickness and single weight.

For a long time, the polycrystalline silicon core equipment reactor has relied on imported iron-nickel-based alloy wide and thick plate materials, which have been constrained by small specifications, high costs, and long delivery cycles, becoming a bottleneck in the development of the polycrystalline silicon industry, urgently requiring localization. The customer not only demanded stringent performance requirements such as high temperature resistance, high pressure resistance, strong corrosion resistance, and extremely high surface quality for this product, but also unprecedented requirements for thickness and plate weight, presenting extraordinary technical challenges. Domestic steel mills had never before supplied such products.

In the first half of the year, Taiyuan Iron and Steel (TISCO) took on the mission of achieving localization and large-scale supply breakthroughs in key materials for the photovoltaic industry. Through arduous technical efforts, TISCO boldly adopted an efficient short-process technology route, resolving a series of technical challenges in the production of wide and thick plates made from iron-nickel-based alloys. This led to significant innovations in the production process, allowing TISCO to independently develop high-performance, high-quality wide and thick plates, which were successfully mass-supplied in the same year. Subsequently, in response to the upgraded material selection requirements for polysilicon projects, TISCO achieved a global first by producing alloy wide and thick plates weighing over 100 tons, filling a market gap.

In the month and year, the research and development project won the first prize of the Metallurgical Science and Technology Award from the China Iron and Steel Industry Association and the China Metal Society; in the same month and year, it was also nominated for the "Prize" Annual Innovation Award by the World Steel Association for the year (the 10th session).