Steel Tundish Refractories Used in Continuous Casting Page

Steel Tundish

Refractories Used in Continuous Casting Page 2 2016 North American Sales Meeting

Tundish Basics • Tundish Functions – Evenly distribute steel of uniform temperature – Provide constant metal height & discharge rate – Reservoir of molten metal while ladle is changed – Control metal flow patterns/ promote inclusion floatation Page 3 • Tundish Lining Wear Mechanisms – Steel cast temperature/chemistry – Sequence length (cast time) – Slag conditioner chemistry – Slag carryover 2016 North American Sales Meeting

Tundish Cycle Page 4 2016 North American Sales Meeting

Tundish Products by Family Page 5 2016 North American Sales Meeting

Tundish Cast Lining – Narcon 70 Page 6 2016 North American Sales Meeting

HWI Customers – Cast/Safety Linings Customer Location Material Arcelor. Mittal Burns Harbor, IN Narcon 70 Arcelor. Mittal Cleveland, OH (West) Narcon 70 Arcelor. Mittal Coatesville, PA Narcon 70 Arcelor. Mittal Vinton, TX Narcon 70 Essar Algoma Sault Ste. Marie, ONT Versaflow 70 C Plus Gerdau Rancho Cucamonga, CA Faskast 80 Gerdau St. Paul, MN Faskast 80 Nucor Steel Memphis, TN Narcon 70 REP Canton, OH Narcon 70 Page 7 2016 North American Sales Meeting

Tundish Working Lining Materials HWI supplies 4 types of traditional tundish working lining materials. Dossolite Spray Narspray Narcotun Dry-Vibratable Clearcoat 6 M- Trowelable Products are manufactured from a magnesite based powder. The Dossolites, Narsprays, and trowelables are mixed with water for spraying or spreading onto the tundish. Narcotun is vibrated into place without water then cured. Page 8 2016 North American Sales Meeting

Sprayed Working Linings Page 9 2016 North American Sales Meeting

HWI Tundish Customers - Spray Page 10 Customer Location Material Arcelor. Mittal Burns Harbor, IN Dossolite 1400 -917 Arcelor. Mittal Cleveland, OH (West) Dossolite 1400 -72 Essar Algoma Sault Ste. Marie, ONT Dossolite 1400 -72 Gerdau Rancho Cucamonga, CA Narspray M-77 NLMK Steel Portage, IN Narspray M-77 Nucor Steel Crawfordsville, IN Dossolite 1400 -72 Nucor Steel Memphis, TN Dossolite 1400 - -72 Nucor Steel Seattle, WA Dossolite 1400 -72 Nucor Steel Yamato, AR Dossolite 1400 - -72 QIT Sorel-Tracy, QUE Dossolite 1400 - -72 2016 North American Sales Meeting

Dry Vibe Working Linings Page 11 2016 North American Sales Meeting

HWI Customers – Dry Vibe Page 12 Customer Location Material Arcelor. Mittal Vinton, TX Basic DV-88 ASW Steel Welland, ONT Narcotun 87 Cascade Steel Mc. Minnville, OR Narcotun 87 XH Gerdau St. Paul, MN Narcotun 87 XH Nucor Steel Berkley, SC Narcotun 87 Nucor Steel Darlington, SC Narcotun 87 Nucor Steel Decatur, AL Narcotun 87 XH REP Canton, OH Narcotun 87 XH 2016 North American Sales Meeting

Tundish Furniture • Patented impact and turbulence control pads and Specifically designed dams, baffles, and weirs – Maximize plug flow • Distribution – Maximize residence time • Homogeneity – Minimize dead volume • Freezing – Minimize turbulence • Slag/powder emulsification – Promote inclusion floatation • Clean Steel Page 13 2016 North American Sales Meeting

Tundish Steel Flow Page 14 2016 North American Sales Meeting

Impact Furniture Page 15 2016 North American Sales Meeting

Baffles, Dams, and Weirs Page 16 2016 North American Sales Meeting

Tundish Flow Modeling • Mimic the flow of steel inside a tundish • Ideal furniture design for clean, quality, and consistent steel optimize lining performance – Improve/Control Temperature – Define Residence Time – Improve Strand to strand temperature distribution • Physical- Water Modeling • Computational- Computer (mathematical) Modeling Page 17 2016 North American Sales Meeting

Steady State Studies Page 18 2016 North American Sales Meeting

Transient State Studies Page 19 2016 North American Sales Meeting

Computer Modeling Benefits • Can look at design changes quickly • Can capture inclusions caused by pouring • Captures temperature effects which are significant when looking at temperature differences between tundish steel and ladle steel Page 20 2016 North American Sales Meeting

Custom Shapes Page 21 2016 North American Sales Meeting