公开(公告)号：US08960264B2

公开(公告)日：2015-02-24

申请号：US13826593

申请日：2013-03-14

Applicant: Nucor Corporation

Inventor： Rama Ballav Mahapatra ,  David W. McGaughey ,  Jay Jon Ondrovic ,  Tim Patterson ,  Mike Schueren

IPC: B22D11/06 ,  B22C9/06

CPC classification number: B22D11/0665 ,  B22C9/06 ,  B22D11/06 ,  B22D11/0622 ,  B22D11/0651

Abstract: Apparatus and method for continuously casting metal strip includes a pair of casting rolls having casting surfaces with a center portion, edge portions each having average surface roughness between 3 and 7 Ra, and intermediate portion between each edge portion and the center portion, the center portion average surface roughness between 1.2 and 4.0 times the edge portion surface roughness, and the intermediate portions average surface roughness between that of the edge and center portions. The surface roughness of the center portion is tapered across its width, and may be tapered across its width is in stepped zones. The center portion may have surface roughness varied across the surface to correspond to a desired variation in metal shell thickness across the cast strip. The center portion may be at least 60% of the casting roll width, and each edge portion may be up to 7% of the casting roll width.

Abstract translation: 用于连续铸造金属带的设备和方法包括一对铸造辊，其具有中心部分的铸造表面，平均表面粗糙度在3和7Ra之间的边缘部分以及每个边缘部分和中心部分之间的中间部分， 平均表面粗糙度在边缘部分表面粗糙度的1.2和4.0倍之间，中间部分在边缘和中心部分之间的平均表面粗糙度。 中心部分的表面粗糙度在其宽度上是锥形的，并且其宽度上的锥形可以是阶梯状的。 中心部分可以具有在表面上变化的表面粗糙度，以对应于跨过铸造带材的金属壳厚度的期望变化。 中心部分可以是铸辊宽度的至少60％，并且每个边缘部分可以高达铸辊宽度的7％。

公开(公告)号：US10046384B2

公开(公告)日：2018-08-14

申请号：US15258055

申请日：2016-09-07

Applicant: NUCOR CORPORATION

Inventor： Kevin Keown ,  Tao Wang ,  Rama Ballav Mahapatra

IPC: B22D11/06

Abstract: A side dam for a continuous twin roll caster with a body of refractory material shaped to form a side dam and having edge portions adapted to engage end portions of casting rolls of a twin roll caster and having a nip portion adapted to be adjacent a nip between the casting rolls and having upper portions extending across the side dam to form a lateral restraint for a casting pool of molten metal during operation in the twin roll caster; and a pocket between 5 and 50 mm in depth formed in the body between the edge portions and forming shoulder portions in the body between the edge portions and the pocket adapted to be worn as a casting campaign continues until the pocket is reached and continuing to be worn away at level of base portions of the pocket until casting is completed.

公开(公告)号：US09744589B2

公开(公告)日：2017-08-29

申请号：US14591507

申请日：2015-01-07

Applicant: NUCOR CORPORATION

Inventor： Rama Ballav Mahapatra ,  David W. McGaughey ,  Jay Jon Ondrovic ,  Tim Patterson ,  Mike Schueren

IPC: B22D11/06 ,  B22C9/06

CPC classification number: B22D11/0665 ,  B22C9/06 ,  B22D11/06 ,  B22D11/0622 ,  B22D11/0651

Abstract: Apparatus and method for continuously casting metal strip includes a pair of casting rolls having casting surfaces with a center portion, edge portions each having average surface roughness between 3 and 7 micrometers Ra, and intermediate portion between each edge portion and the center portion, the center portion average surface roughness between 1.2 and 4.0 times the edge portion surface roughness, and the intermediate portions average surface roughness between that of the edge and center portions. The surface roughness of the center portion is tapered across its width, and may be tapered across its width is in stepped zones. The center portion may have surface roughness varied across the surface to correspond to a desired variation in metal shell thickness across the cast strip. The center portion may be at least 60% of the casting roll width, and each edge portion may be up to 7% of the casting roll width.