Metallurgic impact pad

B - Operations – Transporting – 22 – D

Patent

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Details

B22D 45/00 (2006.01) B22D 41/00 (2006.01)

Patent

CA 2704622

An impact pad (20), formed from a refractory material capable of withstanding contact with molten metal, comprises a base (12) serving in use as an impact surface for molten metal, and a sidewall (14) extending generally upwardly therefrom. The sidewall (14) terminates at an upper surface (16) which is above the base (12) in use such that the base (12) and sidewall (14) define a receptacle for receiving molten metal. The sidewall (14) contains therein at least one channel (22), the at least one channel (22) having first and second ends (24, 26); the first end (24) being relatively closer to the base (12) at its intersection with the sidewall (14) than the second end (26). The at least one channel (22) being open ended at the second end (26) or tapering such that the at least one channel (22) has zero depth at its second end (26). The invention also relates to a tundish including an (15) impact pad (20) as described above.

L'invention porte sur une plaque d'amortissement (20) formée à partir d'un matériau réfractaire apte à résister au contact d'un métal fondu. La plaque comporte une base (12) servant, en utilisation, de surface d'amortissement pour métal fondu, et une paroi latérale (14) s'étendant généralement vers le haut à partir de ladite surface. La paroi latérale (14) s'arrête au niveau de la surface supérieure (16) située est au-dessus de la base (12) en utilisation, de telle sorte que la base (12) et la paroi latérale (14) définissent un réceptacle qui reçoit un métal fondu. La paroi latérale (14) renferme au moins un canal (22) présentant des première et seconde extrémités (24, 26). La première extrémité (24) est relativement plus proche de la base (12) à son intersection avec la paroi latérale (14) que la seconde extrémité (26). La seconde extrémité (26) du ou des canaux (22) est ouverte ou s'effile de telle sorte que leur profondeur est nulle à leur seconde extrémité (26). L'invention porte également sur un panier de coulée (15) comprenant une plaque d'amortissement (20) telle que décrite ci-dessus.

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