Title

INTERNAL QUALITY CONTROL OF STEELS DURING STEELMAKING AND CASTING FOR SOUR SERVICE APPLICATIONS AT ARCELORMITTAL LAZARO CARDENAS, MEXICO

INTERNAL QUALITY CONTROL OF STEELS DURING STEELMAKING AND CASTING FOR SOUR SERVICE APPLICATIONS AT ARCELORMITTAL LAZARO CARDENAS, MEXICO

Authorship

De, Amar K; Garcia, Ruben; Torres, Raul; Lopez, Francisco; Chavez, Mario; Nieto, Jorge

De, Amar K

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Garcia, Ruben

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Torres, Raul

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Lopez, Francisco

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Chavez, Mario

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Nieto, Jorge

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DOI

10.5151/2594-5300-22860

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Abstract

Steels for sour service applications demand stringent internal cleanliness control both in terms of non-metallic inclusions and dissolved gas contents. With the advances in steelmaking and casting processes, steel cleanliness has improved significantly over the last two decades. However, for line pipe steels for sour service applications, oil and gas companies are asking extra quality requirements to guarantee safety against hydrogen induced cracking during service. ArcelorMittal Lazaro Cardenas (AMLC) at Mexico has implemented key steelmaking and casting technologies to cater to the challenges of sour service slab making. The current article discusses some of the key process controls adhered to during steelmaking, casting and solidification that has enabled AMLC, Mexico to achieve effective resistance to hydrogen flaking in the skelp and excellent hydrogen induced cracking (HIC) resistance in the final product.

Steels for sour service applications demand stringent internal cleanliness control both in terms of non-metallic inclusions and dissolved gas contents. With the advances in steelmaking and casting processes, steel cleanliness has improved significantly over the last two decades. However, for line pipe steels for sour service applications, oil and gas companies are asking extra quality requirements to guarantee safety against hydrogen induced cracking during service. ArcelorMittal Lazaro Cardenas (AMLC) at Mexico has implemented key steelmaking and casting technologies to cater to the challenges of sour service slab making. The current article discusses some of the key process controls adhered to during steelmaking, casting and solidification that has enabled AMLC, Mexico to achieve effective resistance to hydrogen flaking in the skelp and excellent hydrogen induced cracking (HIC) resistance in the final product.

Keywords

Hydrogen induced cracking (HIC); Segregation; Line pipe; Non-metallic inclusion.

Hydrogen induced cracking (HIC); Segregation; Line pipe; Non-metallic inclusion.