Prevention of Al.sub.2 O.sub.3 formation in pouring nozzles and

Details Prevention of Al.sub.2 O.sub.3 formation in pouring nozzles and Prevention of Al.sub.2 O.sub.3 formation in pouring nozzles and

1987-09-23

1989-09-26

Dixon, Jr., William R.

Land vehicles: wheels and axles

Wheel

Nonresilient tire

501 98, 501100, C04B 3558

Patent

active

048700371

ABSTRACT:
The invention is directed to a lining composition for submerged entry pouring nozzles and like shapes used in the continuous casting of metals, particularly aluminum killed, low carbon steels. The lining prevents harmful buildup of alumina and other oxides within the nozzle bore which may cause premature nozzle clogging. The nozzle liner comprises a carbon-bonded, SiAlON-graphite refractory material. Small amounts of antioxidants and additional amounts of less expensive refractory grain or powder are also added to dilute the more expensive SiAlON material.

REFERENCES:
patent: 4205033 (1980-05-01), Hattori et al.
patent: 4528244 (1985-07-01), Winkelbauer et al.
patent: 4540674 (1985-09-01), Watanabe et al.
patent: 4605635 (1986-08-01), Zenbutsu et al.
Yamaguchi, "Latest Tendency of Graphite/Alumina Refractories for Continuous Casting Systems"; Jour. of The Institute of Refractories Eng.; (Summer, 1987), pp. 18-23.

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