Longitudinal cracks etc crack defects on steel billet surface is one of the main reasons of ABS D steel plates to be revised as unqualified steel. The crack defects are generated in the process of steel smelting and casting. The main factor leads to ABS D steel plates crack is that during the steelmaking process, the misheat of the molten steel, and it also has relation to the crystallizer and water cooling process.
Since we have found reasons for ABS D steel plates crack, we can take measure to avoid ABS grade D steel crack. For example:
1.Grinding surface of ABS D steel billets, to ensure no cracks in billets when take the billets into furnace.
2.Strengthening control for N and Als etc elements during smelting process.
3.Improving the casting speed and two cooling process in continuous casting process.
4. In addition, pealing treatyment to continuous casting billets which appear to be cracked is also a good way.
From above description, you may have a general understanding of ABS D steel plates crack. If you want to learn more, welcome to communicate with us at any time.
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