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The document summarizes a customer complaint regarding steel products from heat numbers I5/43 and J3/02 that were found to have seam and streak flaws during machining. An investigation identified the likely cause as alumina type inclusions in the steel. Corrective actions taken were to start adding lime during tapping to minimize inclusions and monitor subsequent heats, which showed an improvement in inclusion levels.

Author

PANKAJ JAISWAL

Language

EN