At AHD, we have had the privilege of using the AOD (Argon Oxygen Decarburization) process since 1986 to refine our steel production. With our two dedicated installations, this process enables us to produce a wide variety of metallurgical grades, strengthening our expertise and competitiveness in the industry.
How the AOD Process Works
The AOD process is essential for manufacturing stainless and alloy steels. These steels contain elements that are easily oxidized, such as chromium or aluminum, requiring a specific refining approach. After the initial melting in an induction furnace, the molten metal is transferred to an AOD converter, where it undergoes three key steps: decarburization, reduction, and desulfurization.
Our AOD equipment is structured around two main components, the “lower cone” and the “cap,” forming what is called the “vessel.” Special attention is given to the refractory materials, which form the foundation of our operations. These refractories, whether for wear or working purposes, ensure the durability and reliability of our equipment on a daily basis.
Key Steps in the AOD Process at AHD
Here is a detailed overview of our AOD process:
- Molten metal entry: The molten metal is delivered to the AOD converter.
- Decarburization: This step reduces the carbon content in the metal.
- Carbon percentage control: Precise monitoring ensures the desired characteristics are achieved.
- Reduction: Residual oxides are removed to enhance the alloy’s quality.
- Chemical analysis: The composition is verified to ensure specifications are met.
- Casting: The purified metal is poured for cooling and solidification.
A Metallurgical Journey Focused on the Future
At AHD, we take pride in combining excellence and performance in our industrial approach. Every day, we push the boundaries of innovation to deliver metallurgical alloys that meet modern demands.