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    • 10. 发明授权
    • Method of manufacturing a rotating apparatus disk
    • 旋转装置盘的制造方法
    • US07316057B2
    • 2008-01-08
    • US10961626
    • 2004-10-08
    • Brij Seth
    • Brij Seth
    • B23P25/00
    • B21K1/36C22B9/18C22B9/20F01D5/28Y10T29/49885Y10T29/49913Y10T29/49973Y10T29/49975Y10T29/49977Y10T29/4998Y10T29/49984Y10T428/12229
    • A method (20) of fabricating a large component such as a gas turbine or compressor disk (32) from segregation-prone materials such as Alloy 706 or Alloy 718 when the size of the ingot required is larger than the size that can be predictably formed without segregations using known triple melt processes. A sound inner core ingot (12) is formed (22) to a first diameter (D1), such as by using a triple melt process including vacuum induction melting (VIM), electroslag remelting (ESR), and vacuum arc remelting (VAR). Material is than added (26) to the outer surface (16) of the core ingot to increase its size to a dimension (D2) required for the forging operation (28). A powder metallurgy or spray deposition process may be used to apply the added material. The added material may have properties that are different than those of the core ingot and may be of graded composition across its depth. This process overcomes ingot size limitations for segregation-prone materials.
    • 当所需锭子的尺寸大于可预测形成的尺寸时,制造诸如合金706或合金718的偏析材料的燃气轮机或压缩机盘(32)等大部件的方法(20) 没有使用已知的三重熔融方法的分离。 例如通过使用包括真空感应熔化(VIM),电渣重熔(ESR)等)的三重熔融法,将声音内芯锭(12)形成(22)至第一直径(D 1 N) ,和真空电弧重熔(VAR)。 将材料(26)添加到芯锭的外表面(16)以将其尺寸增加到锻造操作(28)所需的尺寸(D 2 N 2)。 可以使用粉末冶金或喷雾沉积工艺来施加添加的材料。 所添加的材料可以具有与芯锭不同的性质,并且可以在其深度上具有渐变组成。 该过程克服了偏析容易材料的晶锭尺寸限制。