Sources of Inclusions in Stainless Steel Products

 

Sources of Inclusions in Stainless Steel Products

Endogenous Inclusions

During stainless steel production, endogenous inclusions mainly arise from:

  • Deoxidizers (A1, FeSi, SiMn, etc.) added to molten steel, oxidizing to generate Al2O3, SiO2, MnOAl2O3, SiO2-MnO, and Al2O3.
  • Alloy elements (Cr, Ti, Si, Mn) partially oxidizing to form FeOCr2O3, SiO2-Cr2O3, Al2O3-Cr2O3, Cr2O3-MnS, TiO2, and other inclusions.
  • Secondary deoxygenation products forming during molten steel cooling, solidification, and crystallization due to temperature drop and local component segregation.

Foreign Inclusions

Foreign inclusions in finished stainless steel products result from:

  • Large inclusions introduced into molten steel due to erosion of refractory materials during smelting and casting.
  • Slag mixed into molten steel (e.g., steel slag mixed in the AOD tapping process) and secondary oxidation during transportation and casting.

Nitride Inclusions

Nitride in stainless steel liquid, primarily in the form of TiN, result from:

  • Dissolved [N] in steel interacting with N2 in the air absorbed during smelting and casting, along with [Ti] in the steel.
  • Solidification of molten steel producing other nitride types such as CrN and Cr2N.

Teda Ganghua Metal -17 years

Bring detailed specifications to contact me if you need
We have high quality and reasonable prices
📧 rachel@tedaganghua.com
Whatsapp: (+86) 138 2059 7807
Welcome to our website! https://www.tedametal.com/ & https://www.gh-stainlesssteel.com/ & https://www.teda-aluminum.com/

评论

发表评论

此博客中的热门博文

Finding the Best Aluminum Coil Suppliers

  Finding the Best Aluminum Coil Suppliers Among many aluminum coil suppliers in China, Teda stands out due to several key advantages: Professional Experience Teda is one of the most professional aluminum coil suppliers in China. With decades of manufacturing history, Teda has exported products to numerous countries, including the USA, Brazil, Germany, the UK, and many others. Comprehensive Company Structure Teda’s complete company structure ensures efficient operations: Production Department Domestic Trade Department Foreign Trade Department Human Resource Department Finance Department Each department is divided into smaller units with specific duties. For example, the Foreign Trade Department includes: E-Commerce Unit : Manages the company website and client inquiries. Client Service Unit : Provides product information and handles client requests. Documentation Unit : Manages shipping procedures after orders are placed. Competitive Pricing Teda offers competitive prices, often 5%...
阅读全文

Steel and Iron Ore Trade Statistics for China

  Steel and Iron Ore Trade Statistics for China – May 2024 Steel Exports In May 2024, China exported 9.631 million tons of steel, a 4.4% increase from the previous month. The average price was $783.7 per ton, up 0.8% from April. From January to May, China exported a total of 44.655 million tons of steel, marking a 24.7% increase from the previous year. Steel Imports China imported 637,000 tons of steel in May 2024, a 3.2% decrease from April. The average price was $1,651.5 per ton, down 3.3%. Between January and May, total steel imports amounted to 3.043 million tons, a 2.7% decrease from the previous year. Iron Ore Imports In May 2024, China imported 102.033 million tons of iron ore, up 0.2% from the previous month. The average price was $105.8 per ton, a 6.5% decrease from April. From January to May, China imported a total of 513.746 million tons of iron ore, a 7.0% increase from the previous year. Teda Ganghua Metal -17 years Stainless Steel Sheets/Plates Supplier Bring detailed...
阅读全文

Exploring 304 Stainless Steel Sheet

图片
 Stainless steel sheet - 304, often simply referred to as "304 Stainless Sheet," stands as one of the most popular and cost-effective options among stainless steel variants. Renowned for its versatility and durability, 304 Stainless Sheet offers commendable corrosion resistance against various chemical agents, industrial settings, and marine conditions. While working the material may render it slightly magnetic, it remains unresponsive to heat treatment. The grain direction on polished sheets is random unless otherwise specified or custom quoted. Specifications Material: AISI 304/304L Standards: ASTM A240, AMS 5513/5511 Finishes 2B Mill: Dull finish #4 Brushed: Ideal for appliances #8 Mirror: Offers a reflective surface Applications 304 Stainless Sheet finds applications in a wide array of industries, including: Sanitary dairy, beverage, and food processing Hospital equipment Marine hardware Kitchen appliances Backsplashes, and more Workability With the proper equipment,...
阅读全文