Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1983-10-11
1985-08-06
Godici, Nicholas P.
Metal founding
Process
Shaping liquid metal against a forming surface
164415, 164417, 164440, 164476, 164477, 164490, B22D 1110, B22D 1112
Patent
active
045329800
ABSTRACT:
A method and an apparatus for removing fine cold shut cracks on a horizontally and continuously cast steel strand, using ejection of a plurality of metal shots, comprises: horizontally and intermittently withdrawing a cast steel strand from a horizontal mold by a plurality of cycles each comprising a pull and a push, cooling the cast steel strand in a cooling zone provided following the horizontal mold on the same horizontal level as that of the horizontal mold, increasing the temperature of the surface portion of the solidified shell of the cast steel strand in a heat-restoring zone provided following the cooling zone on the same horizontal level as that of the cooling zone, to soften the surface portion of the solidified shell of the cast steel strand, and then continuously ejecting a plurality of metal shots from a plurality of shooters in a shooting zone provided following the heat-restoring zone on the same horizontal level as that of the heat-restoring zone onto the cast steel strand, to weld fine cold shut cracks produced on the surface portion of the solidified shell of the cast steel strand under the pressure applied by the plurality of metal shots thus ejected, thereby substantially completely removing the fine cold shut cracks.
REFERENCES:
patent: 2565959 (1951-08-01), Francis et al.
patent: 3693701 (1972-09-01), Waclawiczek
Hamada Yoneichi
Hirose Takeshi
Miyawaki Yoshiharu
Mizuoka Seishi
Tsuru Masahiro
Batten, Jr. J. Reed
Godici Nicholas P.
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