China's Ministry of Commerce has extended the antidumping duties on imports of grain oriented flat rolled electrical steel from Japan, South Korea & European Union for five years effective from 23 July 2022.Japan -39.0-45.7%EU - 46.3%Korea - 37.3%The tariffs were reinstated after year-long investigation which was launched in June 2021 following a petition by steelmakers BaoSteel & Shougang which argued that ending the tariffs could lead to further dumping, hurting the domestic steel sector.Cold Rolled Grain Oriented Steel is used in particular to laminate any heavy transformer as a core. CRGO steel has exceptionally high mechanical elasticity and magnetic properties in the rolling direction. These crystals are often arranged by cold rolling at room temperature to coordinate the direction of grain formation in a specific direction. Since the magnetic properties during cold rolling depend on individual micro-crystals and direction of growth orientation. This can be further improved on the basis of different production processes and even heat treatment or annealing. While manufacturing CRGO Steel Cores the level of carbon, nitrogen, and oxygen must be kept at a very minimum level to avoid the formation of carbides and oxides. As these formed compounds alloys must be kept below 1 micrometer in size as these compounds are responsible for increasing the hysteresis losses and decreasing the permeability of the material. Grain size in cold rolled grain oriented steel is always in larger and uniform sizes due to large grain size magnetic losses being reduced. In general, CRGO steel cores come in a normal range of 0.3 mm to 0.25 mm. When these materials are stacked or wound together to give the transformers and other electrical devices a strong magnetic core. As a thumb rule, 3% of the silicon composition for CRGO steel is considered better as more silicon makes the sheet very brittle, which increases the electrical resistivity and decreases the losses due to eddy current.
China's Ministry of Commerce has extended the antidumping duties on imports of grain oriented flat rolled electrical steel from Japan, South Korea & European Union for five years effective from 23 July 2022.Japan -39.0-45.7%EU - 46.3%Korea - 37.3%The tariffs were reinstated after year-long investigation which was launched in June 2021 following a petition by steelmakers BaoSteel & Shougang which argued that ending the tariffs could lead to further dumping, hurting the domestic steel sector.Cold Rolled Grain Oriented Steel is used in particular to laminate any heavy transformer as a core. CRGO steel has exceptionally high mechanical elasticity and magnetic properties in the rolling direction. These crystals are often arranged by cold rolling at room temperature to coordinate the direction of grain formation in a specific direction. Since the magnetic properties during cold rolling depend on individual micro-crystals and direction of growth orientation. This can be further improved on the basis of different production processes and even heat treatment or annealing. While manufacturing CRGO Steel Cores the level of carbon, nitrogen, and oxygen must be kept at a very minimum level to avoid the formation of carbides and oxides. As these formed compounds alloys must be kept below 1 micrometer in size as these compounds are responsible for increasing the hysteresis losses and decreasing the permeability of the material. Grain size in cold rolled grain oriented steel is always in larger and uniform sizes due to large grain size magnetic losses being reduced. In general, CRGO steel cores come in a normal range of 0.3 mm to 0.25 mm. When these materials are stacked or wound together to give the transformers and other electrical devices a strong magnetic core. As a thumb rule, 3% of the silicon composition for CRGO steel is considered better as more silicon makes the sheet very brittle, which increases the electrical resistivity and decreases the losses due to eddy current.
