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With the addition of calcium in steel, the steel suppress the formation of MnS during the solidification of steel. Other reasons include:

1.Improving steel castability in continuous casting

2. To minimize inclusion related surface defects in billet, bloom and slab castings

3. To Improve steel machinability at high cutting speeds

4. To minimize the susceptibility of steel to re-heat cracking

5. To prevent lamellar tearing in large restrained welded structures

6. To minimize the susceptibility of high-strength low alloy linepipe steels to hydrogen-induced cracking.

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Yes, calcium oxide (also known as quicklime) can corrode steel. When it comes in contact with water, it produces a highly alkaline solution that can corrode steel surfaces over time. It is important to handle and store calcium oxide carefully to prevent any unwanted damage.


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Heating the calcium carbonate precipitate was done to drive off the water and carbon dioxide gases, converting the calcium carbonate into calcium oxide or quicklime. This process is known as calcination and is used to produce lime for various industrial applications such as in the production of cement, steel, and glass.


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