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0.2 mm high performance electrical steel is rolled out like this

08 Dec 2023
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GNEE'S Oriented Silicon Steel
According to statistics, in the first 10 months of this year, China's crude steel, pig iron, steel production increased by 1.4%, 2.3% and 5.7%, respectively. From the variety point of view, the output of shipbuilding plates, automotive plates and container plates has increased significantly. In terms of exports, in the first 10 months of this year, China exported 74,732,000 tons of steel, an increase of 34.8%, and the export of high value-added products increased significantly. From January to October, the export volume of high value-added steel varieties coated plates and coated plates increased by 21% and 17% year-on-year. On the other hand, from the perspective of steel export flow, this year's steel exports mainly flowed to countries and regions to build the "Belt and Road". From January to October, the cumulative value of China's steel exports to Central Asia and the Middle East countries was 13.435 million tons, an increase of 61%.

With the adjustment of China's steel industry structure, there are dozens of kinds of steel products launched in the world this year, and these high-end products not only meet the needs of domestic manufacturing industry, but also become popular products exported overseas. Since the beginning of this year, with the increase of steel export orders, many steel companies have upgraded their production lines. Our exports have increased significantly, the product structure is continuously optimized, and the future depends on variety, quality, and smooth structural adjustment to support our transformation from a manufacturing power to a manufacturing power.

With the rapid development of China's new energy vehicle manufacturing industry, high-performance electrical steel, as the core material for manufacturing drive motors on new energy vehicles, has always been a hot spot of technological innovation in the industry. 0.2 mm is equivalent to the thickness of two sheets of A4 paper, and the "dimensional accuracy of four microns" means that the thickness difference between any two points on the strip cannot be more than one-fifteenth of the thickness of a human hair. The thinner and more uniform the electrical steel, the higher the efficiency of the motor, and the faster the new energy vehicles run, the more power they save.
Oriented Electrical Steel
This is the work roller that is in direct contact with the rolling and strip steel, and if you roll the dough at home, this is our rolling pin. That steel material is equivalent to a dough, and we use this rolling pin, and we squeeze this dough into a thin dough. Six rolling pins were strung together in one go. The production efficiency is 8 to 10 times higher than the traditional production method, and the rolling speed of this unit is 1500 meters per minute, which is equivalent to the car running at 90 kilometers per hour on the highway.

But as efficiency increases, the risks multiply. One of the biggest characteristics of electrical steel is as brittle as glass, the whole rolling process has hundreds of technical nodes, a place is not well controlled, it will lead to the fracture of the entire strip. 0.15mm thickness and below this thin specification products, the application scenario is more high speed motor, speed may be tens of thousands or even hundreds of thousands of revolutions of this motor products, such as they need lower iron loss, higher strength and so on.


Since the beginning of this year, the structure of China's steel industry has continued to adjust, and new products have been introduced, distributed in various fields such as automotive steel, electrical steel, ships, machinery, etc. These products have played a supporting role in the high-quality development of downstream manufacturing industry. According to experts, among the 22 major categories of steel products, 19 categories of self-sufficiency in China have reached 100%, and the other 3 categories have exceeded 99%.
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