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Silicon steel sheets: The invisible backbone of modern civilization

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  When we press the light switch, few people realize that behind the electricity that lights up the room, there is a type of special steel with a thickness of less than 0.35 millimeters operating silently. This extremely low-carbon alloy steel, with a silicon content of 0.5% to 4.5%, known as silicon steel sheets, is supporting the energy system of modern society with an astonishing penetration rate. From the 98% transmission efficiency of the power grid to the 97% motor efficiency of new energy vehicles, this “soft gold in steel” is quietly defining the boundaries of human energy utilization. The “pacemaker” of the energy network At the core of the ultra-high voltage substation, the silicon steel sheets, each with a thickness of only 0.23-0.35 millimeters, are undergoing precise magnetic energy conversion. For every 1% increase in silicon content, the material’s resistivity increases by approximately 4 times. This characteristic reduces the transformer’s no-load loss...
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New Export Policy for Silicon Steel in 2026

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  On December 12, 2025, the Ministry of Commerce and the General Administration of Customs jointly issued Announcement No. 79, deciding to implement export license management for certain steel products starting from January 1, 2026. This marks the re-implementation of the steel export license management system in China after a 16-year hiatus since its cancellation in 2009, signifying a new stage in China’s steel export management. The China Iron and Steel Association stated that the current inclusion of steel products under export license management by the state is an important measure to guide the standardized export of steel products and promote the high-quality development of the steel industry, which is conducive to maintaining the global steel supply and demand pattern and trade balance. The total export volume of silicon steel in China has been continuously increasing in recent years. It is not difficult to see from the trend of China’s silicon steel import and ...
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A Brief Introduction on the Causes of Overheating in Transformers

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  There are many reasons for excessively high transformer temperatures, which could be due to internal transformer malfunctions or external factors. One: Internal Transformer Malfunctions When a transformer operates, the temperature of each part tends to stabilize when heat generation and dissipation reach equilibrium. If, under the same conditions, the oil temperature is more than 10°C higher than usual, or the temperature continues to rise despite a constant load, it can be considered that an internal transformer malfunction has occurred. 1. Poor Tap Changer Contact During operation, insufficient contact pressure or contamination at the tap changer’s contact points can increase contact resistance. Increased contact resistance leads to increased contact temperature and overheating. This is especially true after tap changing and during transformer overload operation, where poor tap changer contact and overheating are more likely. Poor tap changer contact can be ide...
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The Development Path of Silicon Steel Sheets in China

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  The silicon steel sheet industry is undergoing a significant transformation towards high-end products. This trend is driven by technological advancements, policy guidance, and market demand. The following analysis examines its current status and future prospects from key dimensions. The core drivers of high-end transformation include technological breakthroughs, policy support, and upgraded market demand. At the technological level, domestic enterprises have increased their high-end product capacity through intelligent equipment upgrades and process optimization. For example, Taiyuan Iron & Steel Group launched new oriented electrical silicon steel and cold-rolled non-oriented silicon steel products in December 2025, and released its exclusive brand “TISCORE,” marking progress in the technological independence and widespread application of domestically produced high-end silicon steel. Meanwhile, Baosteel, Shougang Group, and other enterprises have ...
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A Brief Discussion on the Application of Silicon Steel Sheets in Transformers

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  Silicon steel sheets , also known as silicon steel plates, are an indispensable magnetic material in the electrical engineering field. They are refined from electrical silicon steel with a silicon content of 0.8%-4.8% through hot and cold rolling processes, and are typically no more than 1 mm thick, hence the name “thin sheet.” Broadly speaking, silicon steel sheets belong to the category of sheet metal, but they are classified as a separate category due to their unique electrical properties and wide range of applications. Whether in the power, telecommunications, or instrumentation industries, silicon steel sheets play a crucial role, serving as a key material for ensuring the efficient and stable operation of equipment. Most commonly used transformer cores are made of silicon steel sheets. Silicon steel is a type of steel containing silicon, with its silicon content controlled within the range of 0.8% to 4.8%. The primary reason for choosing silicon steel as the ...
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Market Research and Development Trends of Oriented Silicon Steel Industry

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  Analysis and Forecast of Downstream Sub-market Applications in the Grain-Oriented Silicon Steel Industry China’s steel industry has entered a stage of fierce competition for existing market share. In 2023, crude steel production reached 1.005 billion tons, and steel product output reached 1.4 billion tons, representing a year-on-year increase of 1.1%. Driven by technological and industrial revolutions, the steel industry is accelerating structural upgrading and developing towards mid-to-high-end products. On the consumption side, demand for construction steel has declined, while demand for high-quality special steels such as medium and heavy plates, automotive steel sheets, and silicon steel has increased. High-end steel will become the main focus of future development, and grain-oriented silicon steel is expected to become a key development area for the steel industry. Analysis of the supply situation of my country’s grain-oriented silicon steel industry ...
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Innovation-Driven Development Towards High-Quality Development —A Record of the R&D Center Upgrade

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  I.Background of R&D Center Upgrade In recent years, with the country’s emphasis on high-quality innovation and development in the manufacturing industry, and the increasing global demand for environmental protection, energy conservation, and intelligent technologies, Jiangyin Centersky Electrical Appliance Co., Ltd, a long-established manufacturer of electromagnetic silicon steel sheets , has deeply recognized the importance of technological research and development. In recent years, the company has invested in and continuously upgraded its R&D center, gradually improving its technological innovation capabilities and market competitiveness, keeping up with domestic and international market demands, and promoting the company’s high-quality development in the electrical industry. II. Upgrade Content of R&D Center 1.Hardware infrastructure upgrades and talent development: To better meet market demands, improve product performance, and provide ...
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