The optimization of the aluminum deoxidation process to reduce non-metallic inclusions in steel products

Nowadays, clean liquid steel is crucial for improving castability, increasing production efficiency, and generating high-quality, customer-satisfying products. This research studied the influence of aluminum deoxidation process on the inclusion content in steel products. The image analysis technique and the calculation of inclusion volume fraction were used to assess the cleanliness of steel products. A total of ۳۷ heats of typical medium carbon Al killed steel with aluminum contents in the ۰.۰۱۵-۰.۰۴۰ wt.% range were put to the test. The findings revealed that at least ۷۰% of the total aluminum utilized in the tapping and ladle furnace (LF) must be added during the tapping process in order to produce a clean steel product with an inclusion volume fraction of less than ۰.۰۲۳%. Moreover, aluminum granules need to be added once throughout the LF process during the first ۱۵ minutes of the process. In order to adjust the aluminum content in the liquid steel, the aluminum wire must be fed all at once at the last minute of the LF process.

کلیدواژه ها:

Clean steel ، Deoxidation ، Aluminum ، inclusion ، Image analysis