{"id":47453,"date":"2024-10-15T10:15:55","date_gmt":"2024-10-15T08:15:55","guid":{"rendered":"https:\/\/www.bonomiacciai.it\/i-trattamenti-termici-processi-di-produzione-dellacciaio-speciale\/"},"modified":"2025-05-22T15:18:12","modified_gmt":"2025-05-22T13:18:12","slug":"special-steel-production-processes-heat-treatments","status":"publish","type":"post","link":"https:\/\/www.bonomiacciai.it\/en\/special-steel-production-processes-heat-treatments\/","title":{"rendered":"Special Steel Production Processes: Heat Treatments"},"content":{"rendered":"
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After the hot plastic deformation processes, the special steel undergoes a series of heat treatments aimed at improving the microstructure and machinability. These heat treatments are essential to refine the mechanical properties of the steel and make it suitable for a wide range of industrial applications.<\/p><\/blockquote>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n[\/vc_column_text][vc_empty_space height=”16px”][vc_single_image image=”44734″][\/vc_column][\/vc_row][vc_row][vc_column]

<\/div>[\/vc_column][\/vc_row][vc_row][vc_column][vc_custom_heading text=”Types of Heat Treatments” use_theme_fonts=”yes”][vc_empty_space height=”16px”][vc_column_text]Heat treatments applied to steels, such as normalizing, solution annealing, and annealing, vary depending on the steel grade and the desired properties. Each treatment is designed to enhance specific characteristics of the steel, and the temperatures involved in the process play a fundamental role in achieving the optimal result.
\nAn example of an advanced treatment is the EFS (Extra Fine Structure) process, performed at Deutsche Edelstahlwerke (DEW) steelworks. This heat treatment improves the material’s homogeneity, leading to a significant enhancement of the steel\u2019s properties.
\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_custom_heading text=”Preliminary Heat Treatments” use_theme_fonts=”yes”][vc_empty_space height=”16px”][vc_column_text css=””]There are also heat treatments performed before hot plastic deformation, which are crucial for preparing the steel for subsequent production processes. Some of these include:<\/p>\n
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  • Calcium Treatment \u201cCAD\u201d: Spheroidizes the sulfides present in the steel, improving the isotropy of mechanical properties and transverse toughness.<\/li>\n
  • Diffusion Annealing: Performed at high temperatures, this treatment reduces the level of macro-segregation, improves chemical and microstructural homogeneity, and increases the isotropy of mechanical properties.<\/li>\n<\/ul>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_custom_heading text=”Special steel production processes \u2013 Rolling: conclusion.” use_theme_fonts=”yes”][vc_column_text]Heat treatments are a fundamental part of special steel production, essential for improving the microstructure, homogeneity, and mechanical performance of the material. At Deutsche Edelstahlwerke (DEW) steelworks, these treatments are carried out with the utmost care, ensuring steel of the highest quality, suitable for the most demanding industrial applications. Keep following our blog to discover more details about the production processes of special steel.
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