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    • 2. 发明公开
    • 연속 주조 강 슬래브의 제조 방법 및 장치
    • 用于生产连续铸钢板的方法和装置
    • KR1020050092433A
    • 2005-09-21
    • KR1020057013342
    • 2004-01-16
    • 에스엠에스 그룹 게엠베하
    • 자즈베르아돌프구스타프렛젤디르크
    • B21B1/46
    • B21B13/22B21B1/463B21B13/02B21B39/006B21B2203/22B21B2267/06
    • Continuously cast products (12) are often provided with surface defects such as oscillation marks (17) and other non-homogeneous structures in the cast state thereof during production in a casting die (11) of a continuous casting plant (10). Defects which render a strip useless for superior applications also frequently occur on the strip surface during subsequent milling of the slab (12") into a strip. The aim of the invention is to minimize said defects and provide the rolling mill with a slab (12") having a desired preliminary profile and an improved near-surface structure. Said aim is achieved by arranging a reducing roll stand (30) in the area of the bending rolls or straightening driver rolls (24) within the continuous casting plant (10). Said reducing roll stand (30) allows the cast billet (12) to be deformed in a specific manner at an early point in time while still having a high temperature and providing a high energy yield after being completely hardened such that the depth of the existing oscillation marks (17) on the cast billet surface (16) is reduced, the finely crystalline edge layer (18) is enlarged as a result of the energy being released which is introduced into the reducing billet (12') during said deformation process, and increased recrystallization occurs and the grains in the deformed edge zone (19) of the slab (12") are refined during the subsequent thermal treatment in a holding furnace (40).
    • 在连续铸造设备(10)的铸模(11)的制造过程中,连续铸造产品(12)在铸造状态下经常具有诸如振动标记(17)和其它非均匀结构的表面缺陷。 本发明的目的是使所述缺陷最小化,并向轧机提供板坯(12),所述板坯(12“)在板坯(12”)的后续铣削过程中也经常发生在带材表面上, “)具有期望的初步轮廓和改进的近表面结构。 所述目的通过在连续铸造设备(10)内的弯曲辊或整流驱动辊(24)的区域中布置减速辊架(30)来实现。 所述还原辊架(30)允许铸造坯料(12)在早期时间以特定方式变形,同时仍然具有高温并且在完全硬化之后提供高能量产率,使得现有的 铸造坯料表面(16)上的振动标记(17)减少,由于在所述变形过程中释放的能量被引入到还原坯料(12')中,细晶边缘层(18)被扩大, 并且在保持炉(40)中随后的热处理期间发生增加的再结晶并且在板坯(12“)的变形边缘区域(19)中的晶粒被精炼。