CN107002250A - 沿着冷却孔的排的长的连续的雕刻部 - Google Patents

沿着冷却孔的排的长的连续的雕刻部 Download PDF

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CN107002250A
CN107002250A CN201580065045.XA CN201580065045A CN107002250A CN 107002250 A CN107002250 A CN 107002250A CN 201580065045 A CN201580065045 A CN 201580065045A CN 107002250 A CN107002250 A CN 107002250A
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法蒂·艾哈迈德
克里斯蒂安·门克
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    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
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    • F01D5/288—Protective coatings for blades
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    • F01D9/00—Stators
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    • F01D5/12—Blades
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Abstract

通过连续的长的雕刻部减少热障涂层的剥落行为并且延长TBC的寿命。

Description

沿着冷却孔的排的长的连续的雕刻部
本发明涉及陶瓷表面结构，其中，沿着冷却孔的排存在长的雕刻部。
高载荷的涡轮叶片和轮叶需要应用不同的保护技术，以便能够耐受高的热载荷。涡轮叶片和轮叶的前期需要陶瓷涂层和膜冷却技术以及内部冷却。
只要组合在操作期间起作用并且不发生剥落(spallation)或者未察觉出冷却孔堵塞，那么应用此种技术则是有用的。
膜冷却孔的制造可能是陶瓷涂层剥落的原因之一。
激光钻孔的一些特性(parameters)导致在陶瓷涂层内的裂纹，陶瓷涂层随后剥落并且限制了部件的操作。
另一方面，鉴于不能以低能量进行钻孔，因此不可能将激光钻孔的能量减小到非常低的水平。
因此，本发明的目的是提高陶瓷涂层的寿命并且防止TBC的整体剥落。
该问题通过根据权利要求1的陶瓷表面结构来解决。
在从属权利要求中，公开了可以彼此任意组合的进一步的改进，从而产生了另外的新的优点。
图1、图3、图4示出了TBC的表面以及冷却孔的排的顶部视图，
图2示出了图1的截面图。
通过实施聚合物掩蔽，能够引入在图1至图4中所建议的设计。聚合物掩蔽将提供沿着冷却孔的无陶瓷区域。
该制造过程具有如下优点：
·雕刻部不会像激光雕刻期间一样减小粘合涂层的厚度；
·可以在涂覆期间实施该步骤；
·在出现流延(casting)偏差和涂覆偏差的情况下，聚合物掩蔽将不会影响粘合涂层的厚度。
此种无陶瓷区域的宽度可以在1mm与2mm之间变化。
雕刻部的积极效果是剥落行为。在发生剥落的情况下，剥落的区域不会在宽的区域上延伸。
雕刻部的另一个积极效果是由于非APS区域而引入的涡流，这迫使热气体流如通过高尔夫球上的凹痕一样粘在壁部。在操作期间，将使陶瓷涂层内的台阶平滑，而且APS平滑过程将有助于使边缘中断。
以下积极效果与雕刻部有关：
·能够用现有设计进行改装；
·在剥落的情况下，将仅会影响受限制区域；
·较低的操作风险；
·减少激光钻孔之后的返修；
·适用于所有受剥落威胁的冷却孔排；
·适用于轮叶和叶片。
图1示出了陶瓷涂层25(图2)的顶部视图。
热障涂层25(TBC)是部件1的一部分，部件1具有基底22(图2)，其中，在基底22的顶部上施用热障涂层25。该部件1具有至少一排7的冷却孔10'、10″......，在部件1的使用期间，所述至少一排7的冷却孔10'、10″......由根据箭头13，尤其是几乎垂直于排7的方向14的热气体溢满。方向14是直的，或者方向14只有一次或两次最大25°的斜率转折。
沿着冷却孔10'、10″......的排7的方向14，特别地仅在排7之前存在雕刻部16和/或在排7之后存在第二雕刻部19。
这些雕刻部16、19在TBC 25中是连续的、特别地是直的雕刻部。
雕刻部16、19，20、116，216、31(图3、图4)不是环状(endless)的，例如，不是圆形或者不是正方形或者不是封闭的环。
雕刻部16、19，20、116，216、31特别地起始于排7的起始处并且结束于排7的末端处。
在一排7之前和之后的彼此相邻的两个雕刻部16、19，20、116，216、31之间的距离特别地为1mm至2mm。
此外，雕刻部也可以仅布置在TBC 25中。
在图2中可以看到，雕刻部16、19具有直到基底22为止的深度。
然而，基底22的表面可以涂覆有金属粘合涂层，如NiCoCrAl加上可选的添加剂(Y、Re、Si、Ta......)。
图3、图4示出了弯曲形状的雕刻部20、116，216、31，其中，相对的弯曲雕刻部116、20；216、31的距离小于两个冷却孔10'、10″之间的距离，并且其不是直的(图4)而是多重弯曲的，或者是直的与多重弯曲的组合(图3)。

Claims (13)

1.一种部件(1)，
所述部件(1)包括：
基底(22)，
在所述基底(22)上的陶瓷热障涂层(25)，
在所述基底(4)中以及在所述热障涂层(25)中沿一定方向(14)的至少一排(7)的冷却孔(10'、10”......)，
其中所述热障涂层(25)具有至少一个雕刻部，
其特征在于，
所述至少一个雕刻部是沿着所述方向(14)的在所述至少一排(7)之前和/或之后的长的连续的雕刻部(16、19、116、20、216、31)。
2.根据权利要求1所述的部件，
其中所述雕刻部(16、19，20)是直的。
3.根据权利要求1或2中的一项或两项所述的部件，
其中所述雕刻部(116，216、31)是多重弯曲的。
4.根据前述权利要求中的一项或任意项所述的部件，
其中所述雕刻部(16、19，20、116，216、31)是长的且连续的，以及所述雕刻部(16、19，20、116，216、31)不是彼此连接的或者环状的。
5.根据前述权利要求中的一项或任意项所述的部件，
其中在所述热障涂层(25)中布置有数个雕刻部(16、19，20、116，216、31)。
6.根据权利要求中1、2、3、4或5中的一项或任意项所述的部件，
其中所述雕刻部(16、19，116、20，216、31)仅布置在一排(7)之前和之后。
7.根据权利要求中1、2、3、4、5或6中的一项或任意项所述的部件，
其中所述基底(22)具有金属覆盖涂层。
8.根据权利要求7所述的部件，
其中所述雕刻部(16、19，20、116，216、31)具有到达所述基底(4)上的金属涂层的外表面的深度。
9.根据前述权利要求中的一项或任意项所述的部件，
其中所述雕刻部(16、19，20、116，216、31)仅布置在所述热障涂层中，而未到达所述基底(4)或金属涂层。
10.根据前述权利要求中的一项或任意项所述的部件，
其中所述雕刻部(16、19，116，216、31)起始于排(7)的起始处而结束于排(7)的末端处。
11.根据前述权利要求中的一项或任意项所述的部件，
其中两个雕刻部(16、19，116，216、31)具有沿着溢流方向(13)的距彼此1mm至2mm的距离。
12.根据前述权利要求3至11中的一项或任意项所述的部件，
其中弯曲的雕刻部(116、20，216、31)到直的雕刻部(20)的距离或者弯曲的雕刻部(116、20，216、31)到弯曲的雕刻部(31)的距离小于这两个雕刻部的两个冷却孔(10'、10”)之间的距离。
13.根据前述权利要求中的一项或任意项所述的部件，
其中所述基底(22)是镍基超级合金或钴基超级合金。
CN201580065045.XA 2014-12-02 2015-11-02 沿着冷却孔的排的长的连续的雕刻部 Pending CN107002250A (zh)

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EP14195844.7A EP3029176A1 (en) 2014-12-02 2014-12-02 Long, continuous engraving along a row of cooling holes
EP14195844.7 2014-12-02
PCT/EP2015/075390 WO2016087143A1 (en) 2014-12-02 2015-11-02 Long, continuous engraving along a row of cooling holes

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US (1) US20170314399A1 (zh)
EP (2) EP3029176A1 (zh)
JP (1) JP6445160B2 (zh)
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US20170314399A1 (en) 2017-11-02
WO2016087143A1 (en) 2016-06-09

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