公开(公告)号：US06820680B1

公开(公告)日：2004-11-23

申请号：US10088153

申请日：2002-03-13

申请人： Hisahiko Fukase ,  Shiro Osada

发明人： Hisahiko Fukase ,  Shiro Osada

IPC分类号： B22D1106

CPC分类号： B22D11/0622

摘要： Start up method for initiating casting of metal strip in a twin roll caster comprising parallel casting rolls. A casting pool of molten metal is supported on the casting rolls and confined at the ends of the rolls by side closure plates and the rolls are rotated to deliver cast trip downwardly from the nip between them. One roll is continuously biased laterally toward the other roll either by spring biasing units or by hydraulic biasing units. On start up the gap between rolls is set so as to be less than the thickness of the strip to be cast and the rolls are rotated at such speed that on pouring of molten metal to initiate casting strip is produced to a thickness which is greater than the initial gap between the rolls thereby to cause the biased roll to move bodily away from the other roll to increase the gap between the rolls to accommodate the thickness of the cast strip. This allows initiation of casting without the need for introduction of a dummy bar between the rolls. The peripheral surfaces of rolls may have a negative crown c and the initial gap at the centres of the rolls may be d0=2c+g0 where g0 is an initial roll edge gap.

摘要翻译： 用于在包括平行铸辊的双辊铸造机中开始铸造金属带的启动方法。 熔融金属铸造池被支撑在铸辊上，并通过侧闭合板限制在辊的端部，并且辊旋转以从它们之间的辊隙向下输送铸造脱模。 通过弹簧偏置单元或通过液压偏置单元，一个辊被横向偏向另一个辊。 在启动时，辊之间的间隙被设定为小于要铸造的带材的厚度，并且辊以这样的速度旋转，即在浇铸熔融金属以引发铸造带材时产生的厚度大于 辊之间的初始间隙由此导致偏压辊从另一个辊身体移动以增加辊之间的间隙以适应铸钢带的厚度。 这允许开始铸造，而不需要在辊之间引入虚拟棒。 辊的圆周表面可以具有负冠部c，并且在辊的中心处的初始间隙可以是d0 = 2c + g0，其中g0是初始辊边缘间隙。

公开(公告)号：US06273178B1

公开(公告)日：2001-08-14

申请号：US09553318

申请日：2000-04-20

申请人： Shiro Osada ,  Osamu Takeuchi ,  Atsushi Hirata

发明人： Shiro Osada ,  Osamu Takeuchi ,  Atsushi Hirata

IPC分类号： B22D1106

CPC分类号： B22D11/0697 ,  B22D11/124

摘要： The invention addresses the problem of edge bulging and breakout of as cast strip due to a decrease of perfect solid phase shell thickness of the strip caused by heat recuperation of the unsolidified portion of the strip, by providing a chamber 19 which encloses the travel path of a strip 8 delivered from a pair of chilled rolls 1a and 1b, a pair of chilled blocks 29a arranged in the chamber to be positioned near a nip between the chilled rolls 1a and 1b, with each chilled block 29a being shaped for loose fitting over an edge of a strip 8 and being capable of injecting cooling gas toward the edge of the strip 8. When the strip 8 is to be continuously cast, the interior of the chamber 19 provides an inert gas atmosphere, in which the cooling gas injected by the cooling blocks 29a injection-cools the edges of the strip 8 delivered from the chilled rolls 1a and 1b at a position near the nip between the chilled rolls 1a and 1b.

摘要翻译： 本发明解决了由于通过条带的未固化部分的热消除引起的条的完美固相壳厚度的减小，通过提供一个包围行进路径的腔室19来解决作为铸造带材的边缘凸起和断裂的问题 从一对冷冻辊1a和1b输送的条带8，布置在室中的一对冷却块29a，以定位在冷冻辊1a和1b之间的辊隙附近，每个冷却块29a成形为用于松散地配合在 条带8的边缘并且能够朝向条带8的边缘注入冷却气体。当条带8将被连续铸造时，室19的内部提供惰性气体气氛，其中由 冷却块29a在冷冻辊1a和1b之间的辊隙附近的位置注入 - 冷却从冷冻辊1a和1b输送的带8的边缘。