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公开(公告)号：US07784527B2
公开(公告)日：2010-08-31
申请号：US11991437
申请日：2006-09-05
IPC分类号： B22D27/02 , B22D11/115
摘要： The present invention provides a continuous casting method of steel preventing alumina and other nonmetallic inclusions becoming causes of slivers and argon bubbles becoming causes of blowholes from being entrained and thereby enabling the production of a cast slab superior in surface and internal quality, that is, one giving an inside bore 21 of an immersion nozzle 21 a horizontal sectional shape of an elliptical shape or oblong shape with a length ratio DL/DS of that long axis DL and short axis DS of 1.2 to 3.8, making a direction of that long axis substantially parallel to a long side direction of the casting mold 3, and making the sliding direction of the sliding nozzle 1 a direction perpendicular to said long axis to supply the molten steel in the casting mold 3. Note that a ratio S1/S0 of a sectional area S1 at a smallest sectional area part 23 of the inside bore 21 and a sectional area S0 of a nozzle hole 11 of the sliding nozzle 1 is made 0.5 to 0.95
摘要翻译： 本发明提供一种防止氧化铝等非金属夹杂物的连续铸造方法，成为引起气流和氩气气泡夹带的原因，从而能够生产表面和内部质量优异的铸坯，即一种 给予浸入式喷嘴21的内孔21具有长径比DL / DS为1.2〜3.8的椭圆形或长方形的水平剖面形状，长径方向DS为1.2〜3.8，使该长轴方向基本上 平行于铸模3的长边方向，并且使滑动喷嘴1的滑动方向与所述长轴垂直的方向，以在铸模3中供应钢水。注意，截面的比率S1 / S0 在内孔21的最小截面积部23处的面积S1和滑动喷嘴1的喷嘴孔11的截面积S0为0.5〜0.95
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公开(公告)号：US20090266505A1
公开(公告)日：2009-10-29
申请号：US11991437
申请日：2006-09-05
IPC分类号： B22D11/115 , B22D11/103
摘要： The present invention provides a continuous casting method of steel preventing alumina and other nonmetallic inclusions becoming causes of slivers and argon bubbles becoming causes of blowholes from being entrained and thereby enabling the production of a cast slab superior in surface and internal quality, that is, one giving an inside bore 21 of an immersion nozzle 21 a horizontal sectional shape of an elliptical shape or oblong shape with a length ratio DL/DS of that long axis DL and short axis DS of 1.2 to 3.8, making a direction of that long axis substantially parallel to a long side direction of the casting mold 3, and making the sliding direction of the sliding nozzle 1 a direction perpendicular to said long axis to supply the molten steel in the casting mold 3. Note that a ratio S1/S0 of a sectional area Si at a smallest sectional area part 23 of the inside bore 21 and a sectional area S0 of a nozzle hole 11 of the sliding nozzle 1 is made 0.5 to 0.95
摘要翻译： 本发明提供一种防止氧化铝等非金属夹杂物的连续铸造方法，成为引起气流和氩气气泡夹带的原因，从而能够生产表面和内部质量优异的铸坯，即一种 给予浸入式喷嘴21的内孔21具有长径比DL / DS为1.2〜3.8的椭圆形或长方形的水平剖面形状，长径方向DS为1.2〜3.8，使该长轴方向基本上 平行于铸模3的长边方向，并且使滑动喷嘴1的滑动方向与所述长轴垂直的方向，以在铸模3中供应钢水。注意，截面的比率S1 / S0 内孔21的最小截面积部23的面积Si和滑动喷嘴1的喷嘴孔11的截面积S0为0.5〜0.95
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