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    • 7. 发明授权
      US4608850A Alligator defect elimination 失效
    • Alligator defect elimination
    • 鳄鱼缺陷消除
    • US4608850A
    • 1986-09-02
    • US775344
    • 1985-09-12
    • John A. Ballantyne , William L. Otto, Jr.
    • John A. Ballantyne , William L. Otto, Jr.
    • B21B1/06 , B21B31/20
    • B21B1/06 , B21B2263/16
    • A method of operating a rolling mill in a manner that avoids the occurrence of alligatoring in a slab of metal as it is reduced in thickness in the mill. The slab is subject to a schedule of repeated passes through the mill to effect a predetermined amount of reduction in thickness of the slab in each pass. The method comprises the steps of analyzing the pass schedule of such a slab, and noting any pass in the schedule that has a combination of entry gauge and reduction draft that may subject the slab to alligatoring. An untapered nose of the slab is next presented to the bite of the mill, and if the combination of entry gauge and reduction draft is one that is not subject to alligatoring, the slab is passed through the mill to reduce its thickness as scheduled. However, if the combination of entry gauge and reduction draft is one that causes or tends to cause alligatoring in the slab, the method changes the size of the working gap of the mill by an amount that changes the combination of entry gauge and reduction draft to one that does not subject the slab to alligatoring. The nose of the slab is then directed to the bite of the mill having the changed working gap, and, once the nose of the slab has entered the bite of the mill, the working gap thereof is returned to the size that will effect the schedule reduction and thickness of the slab.
    • 一种轧制机的操作方法，其可以避免在轧制机中厚度减小时金属板块中出现鳄鱼皮的发生。 板坯经受重复通过轧机的时间表，以在每次通过中实现预定量的板坯厚度的减小。 该方法包括以下步骤：分析这种板坯的通行进度，并注意到具有可能使板坯进行鳄鱼化的入口规格和还原吃水的组合的进度表中的任何通过。 板坯的未开口的鼻子接下来呈现给研磨机的咬口，并且如果进样量计和还原气流的组合是不经过鳄鱼的，则将板坯通过磨机以按计划减小其厚度。 然而，如果进样量计和还原气流的组合是导致或倾向于在板坯中引起鳄鱼的组合，则该方法将磨机的工作间隙的大小改变为将进样量计和还原气流的组合改变为 一个不会使板块变成鳄鱼皮。 然后将板坯的鼻子导向具有变化的工作间隙的轧机的咬入口，并且一旦板坯的鼻部进入轧机的咬合状态，其工作间隙将恢复到将影响时间表的尺寸 板坯的减薄和厚度。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 9. 发明授权
      US4593551A Rolling procedures for alligator defect elimination 失效
    • Rolling procedures for alligator defect elimination
    • 鳄鱼缺陷消除的滚动程序
    • US4593551A
    • 1986-06-10
    • US658157
    • 1984-10-05
    • William L. Otto, Jr. , Neal L. Lawson , Howard A. Kuhn
    • William L. Otto, Jr. , Neal L. Lawson , Howard A. Kuhn
    • B21B1/06 , B21B3/00 , B21B31/20
    • B21B1/06 , B21B2003/001 , B21B2263/16 , B21B2273/12
    • A method of reducing the thickness of a slab of metal under conditions that tend to produce alligator defects in the ends of the slab, the method comprising the steps of tapering at least one end of the slab and directing the same into a rolling mill. The tapered end of the slab is reduced in thickness in the mill, the amount of reduction increasing as the tapered end passes through the mill. The slab continues through the mill to reduce the thickness of the same. The end of the slab is again tapered and directed again through a rolling mill, with each of said tapers providing combinations of entry thickness to thickness reduction such that the reduction taken in the area of each taper is in an entry thickness to thickness reduction zone that does not produce alligatoring in the ends of the slab. The remaining untapered portion of the slab is reduced in thickness in the mill in an entry thickness to thickness reduction zone in which alligator formation tends to occur.
    • 一种在倾向于在板坯的端部产生鳄鱼皮缺陷的条件下减小金属板块的厚度的方法，该方法包括使板坯的至少一端锥形并将其引导到轧机中的步骤。 板坯的锥形端部在轧机中的厚度减小，随着锥形端部通过轧机，轧制量的减少量增加。 板坯继续穿过轧机以减小其厚度。 板坯的端部再次是锥形的并且再次通过轧机，其中每个所述锥体提供入口厚度与厚度减小的组合，使得在每个锥形区域中的减少是进入厚度到厚度减小区域， 在板坯的末端不产生鳄鱼皮。 板坯的剩余未加工部分在轧机中的厚度减小，其中倾向于发生鳄鱼形成的入口厚度到厚度减小区域。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 10. 发明授权
      US4584862A Rolling procedures for eliminating alligator defect formation 失效
    • Rolling procedures for eliminating alligator defect formation
    • 消除鳄鱼缺陷形成的滚动程序
    • US4584862A
    • 1986-04-29
    • US632406
    • 1984-07-19
    • William L. Otto, Jr. , Howard A. Kuhn
    • William L. Otto, Jr. , Howard A. Kuhn
    • B21B1/06 , B21B3/00
    • B21B1/06 , B21B2003/001 , B21B2263/16
    • A method for reducing the thickness of a slab of metal under conditions which tend to cause alligator defects to occur. The method comprises the steps of directing a relatively thick slab of metal several times through a rolling mill or mills to incrementally reduce the thickness of the slab until the thickness approaches a value that tends to produce a longitudinal and lateral fracture in one or both ends of the slab. The thickness of the slab is further reduced by passing the same several times again through a rolling mill or mills, with each of the passes of the slab taking a decreasing amount of reduction in thickness until a predetermined thickness value is reached. The next step involves passing the slab again through a rolling mill to further reduce the thickness thereof, the amount of reduction in this step and pass being substantially greater than that of the last pass immediately preceding this step.
    • 一种在倾向于引起鳄鱼皮缺陷的条件下减小金属板厚度的方法。 该方法包括以下步骤：通过轧机或磨机将相对厚的金属板多次引导以递增地减小板坯的厚度，直到厚度接近趋于在一端或两端产生纵向和横向断裂的值 板块。 再次通过轧制机或轧机再次进行多次轧制，使板坯的厚度进一步降低，板坯的每个通道的厚度减小量减小，直到达到预定的厚度值。 下一步包括再次通过轧机将板坯通过轧机进一步减小其厚度，该步骤和通过量的减少量基本上大大高于该步骤之前的最后一次。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
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