公开(公告)号：US5822852A

公开(公告)日：1998-10-20

申请号：US892034

申请日：1997-07-14

Applicant: Bernard Patrick Bewlay ,  Melvin Robert Jackson

Inventor： Bernard Patrick Bewlay ,  Melvin Robert Jackson

IPC: B22D19/10 ,  B23K1/00 ,  B23P6/00 ,  C30B11/00 ,  F01D5/00 ,  F01D5/20 ,  B23P15/00

CPC classification number: F01D5/20 ,  B22D19/10 ,  B23K1/0018 ,  B23P6/005 ,  C30B11/00 ,  C30B29/52 ,  F01D5/005 ,  B23K2201/001 ,  Y10T29/49318 ,  Y10T29/49339 ,  Y10T29/49737 ,  Y10T29/49742

Abstract: A method for repairing a blade tip of a turbine blade of a gas turbine engine. The method is particularly directed to replacing the squealer tip (14) of a directionally solidified (DS) or single crystal (SX) turbine blade (10), and can be carried out using a brazing or welding technique. The method generally entails the step of machining the tip (14) to remove any damaged, worn, oxidized or eroded portions thereof sustained by the blade (10) during engine operation. A DS or SX superalloy replacement tip (18) is then placed on the surface generated by the machining operation. If a brazing operation is used, a brazing alloy composition (16) is first applied to the blade tip or replacement tip (18) prior to placement of the replacement tip (18). The brazing alloy composition (16) is composed of at least two alloys, one of which having a melting point lower than the recrystallization temperature and solvus temperature of the superalloy of the turbine blade (10), such that heating causes the brazing alloy composition (16) to flow and thereby join the replacement tip (18) to the blade tip of the turbine blade (10). Alternatively, if a welding operation is employed, the joining operation entails transmitting current through the turbine blade (10) and replacement tip (18) to resistance weld the replacement tip (18) to the blade tip of the blade (10).

Abstract translation: 一种用于修复燃气涡轮发动机的涡轮叶片的叶片尖端的方法。 该方法特别涉及更换定向凝固（DS）或单晶（SX）涡轮叶片（10）的尖叫尖端（14），并且可以使用钎焊或焊接技术进行。 该方法通常需要加工尖端（14）以消除在发动机操作期间由叶片（10）持续的任何损坏，磨损，氧化或侵蚀的部分的步骤。 然后将DS或SX超合金替代头（18）放置在由加工操作产生的表面上。 如果使用钎焊操作，则在放置替换刀片（18）之前，首先将钎焊合金组合物（16）施加到刀片尖端或替换刀片（18）。 钎焊合金组合物（16）由至少两种合金组成，其中一种熔点低于涡轮叶片（10）的超合金的再结晶温度和溶解温度，使得加热导致钎焊合金组成（ 16）流动，从而将更换的尖端（18）连接到涡轮叶片（10）的叶片尖端。 或者，如果采用焊接操作，则接合操作需要传递电流通过涡轮叶片（10）和更换尖端（18），以将替换尖端（18）电阻焊接到叶片（10）的叶片尖端。

公开(公告)号：US5609779A

公开(公告)日：1997-03-11

申请号：US648472

申请日：1996-05-15

Applicant: John M. Crow ,  James G. Kelley ,  Todd J. Rockstroh

Inventor： John M. Crow ,  James G. Kelley ,  Todd J. Rockstroh

IPC: F02C7/00 ,  B23K26/00 ,  B23K26/06 ,  B23K26/08 ,  B23K26/36 ,  B23K26/38

CPC classification number: B23K26/0622 ,  B23K26/384 ,  B23K26/389 ,  B23K2201/001

Abstract: A method for forming an aperture in a component wall made of metal, the aperture having a diffuser which opens up and outward from a bottom of the diffuser to a first surface of the wall, the method includes the following steps: A) laser machining the wall with a laser which produces a laser beam having a pulse rate and power sufficient to vaporize the metal; B) firing and traversing the laser beam, preferably at an acute angle, across the surface to a predetermined first edge of the diffuser in a single pass starting at a centerline of the diffuser; and C) traversing the laser beam at an increasing rate of speed during the pass so that each beam pulse vaporizes the metal at a laser spot such that successive laser spots substantially overlap each other in decreasing amounts and the pulses nibble out the metal to form a continuous trench below the surface.

Abstract translation: 一种用于在由金属制成的部件壁中形成孔的方法，所述孔具有从扩散器的底部向外开放到壁的第一表面的扩散器，该方法包括以下步骤：A）激光加工 具有产生具有足以使金属蒸发的脉率和功率的激光束的激光器; B）从扩散器的中心线开始并穿过激光束，优选以锐角穿过该表面到达扩散器的预定第一边缘; 并且C）在通过期间以增加的速度穿过激光束，使得每个光束脉冲在激光点处使金属蒸发，使得连续的激光点基本上以减少的量彼此重叠，并且脉冲将金属啃掉以形成 表面连续沟槽。

公开(公告)号：US5492581A

公开(公告)日：1996-02-20

申请号：US242459

申请日：1994-05-13

Applicant: John G. Searle

Inventor： John G. Searle

IPC: B23K20/12 ,  B23K37/04

CPC classification number: B23K20/1205 ,  B23K2201/001

Abstract: Holding means for a component in a friction welding operation consists of a hollow cassette which is open at one end. The component is inserted into the cassette through an aperture at the open end that is shaped to frictionally engage a thickened portion of the component with a force greater than forces transmitted to the component during a friction welding operation. The component is pressed into the cassette to a predetermined depth so that a portion of it protrudes and forms the weld interface. Material upset during the welding operation may be sheared by increasing the weld generating force to overcome the frictional holding force so the end face passes over the weld region.

Abstract translation: 用于摩擦焊接操作中的部件的保持装置由在一端开口的中空盒组成。 组件通过开口端的孔被插入到盒中，该孔被成形为在摩擦焊接操作期间以大于传递到部件的力摩擦地接合部件的加厚部分。 将组件压入盒中预定的深度，使其一部分突出并形成焊接界面。 可以通过增加焊接产生力来克服摩擦保持力来剪切焊接操作期间的材料不适，使得端面越过焊接区域。

公开(公告)号：US5438441A

公开(公告)日：1995-08-01

申请号：US989749

申请日：1993-02-01

Applicant: Todd J. Rockstroh ,  Seetharamaiah Mannava

Inventor： Todd J. Rockstroh ,  Seetharamaiah Mannava

IPC: B23K26/06 ,  G02B5/32

CPC classification number: B23K26/066 ,  B23K26/32 ,  B23K26/342 ,  B23K26/382 ,  B23K26/40 ,  B23K26/402 ,  G02B5/32 ,  B23K2201/001 ,  B23K2203/42 ,  B23K2203/50

Abstract: Apparatus and method for performing material processing, such as drilling or welding, with a high intensity laser beam operating in the infrared spectrum, using a reflective holographic optical element (HOE) the surface of which is prepared to contain an image of the object under processing and energy intensity information, the object can be located in or out of line-of-sight with respect to the emitted laser beam.

Abstract translation: 使用反射全息光学元件（HOE），其表面准备包含处理中的物体的图像（HOE），用在红外光谱中操作的高强度激光束进行诸如钻孔或焊接的材料处理的装置和方法 和能量强度信息，物体可以相对于所发射的激光束位于或离开视距。

公开(公告)号：US5183390A

公开(公告)日：1993-02-02

申请号：US727748

申请日：1991-07-10

Applicant: Dennis R. Amos

Inventor： Dennis R. Amos

IPC: B23P15/04 ,  B23K20/00 ,  B23K20/12 ,  F01D5/00 ,  F01D5/28

CPC classification number: F01D5/005 ,  B23K20/1215 ,  B23K2201/001 ,  Y10T29/49318 ,  Y10T29/49336 ,  Y10T29/49337

Abstract: A steam turbine blade is provided having a trailing edge portion formed from an erosion resistant material deposited on the blade airfoil by a friction surfacing method. According to the method, a rotating consumable rod of erosion resistant material is placed in contact under axial load against a bonding surface formed on the airfoil, thereby causing a portion of the rod adjacent the bonding surface to be plasticized. The rod then traverses the surface linearly leaving in its wake a layer of erosion resistant material bonded to the airfoil by a high quality metallurgical bond. The layer is then ground to form the smooth contour desired for the trailing edge.

Abstract translation: 提供了一种汽轮机叶片，其具有由通过摩擦表面法沉积在叶片翼型上的耐侵蚀材料形成的后缘部分。 根据该方法，将耐磨损材料的旋转可消耗杆放置在轴向负载下接触形成在翼型上的接合面上，从而导致与接合表面相邻的杆的一部分被塑化。 然后，杆通过高质量的冶金结合线路地离开表面，留下一层抗侵蚀材料，结合到翼型件。 然后将该层研磨以形成后缘所需的光滑轮廓。

公开(公告)号：US5035411A

公开(公告)日：1991-07-30

申请号：US539212

申请日：1990-06-18

Applicant: John W. Daines ,  Bryan L. Benn ,  Walter H. Stoll

Inventor： John W. Daines ,  Bryan L. Benn ,  Walter H. Stoll

IPC: B23K20/12

CPC classification number: B23K20/1205 ,  B23K2201/001

Abstract: A delicate or awkward to grip component which is to be friction bonded to another has formed on it a flange or like formation which can be gripped firmly by a wedging action. The component is loaded into a shuttle, provided with a releasable wedge clamp, which is carried by the output drive member of a friction bonding machine. Machine forces for the necessary friction heating and bonding phases of the operation are transmitted to component through faces on the shuttle which abut the component flange.

公开(公告)号：US4953777A

公开(公告)日：1990-09-04

申请号：US193213

申请日：1988-05-11

Applicant: Glenn E. Griffith ,  Joaquin Bustamante ,  Michael D. Scheel ,  Herbert Koven

Inventor： Glenn E. Griffith ,  Joaquin Bustamante ,  Michael D. Scheel ,  Herbert Koven

IPC: B23K20/00 ,  B23P6/00 ,  B23P6/04 ,  F01D5/00

CPC classification number: B23P6/005 ,  B23K20/00 ,  F01D5/005 ,  B23K2201/001

Abstract: A method is provided for repairing by solid state diffusion a damaged portion of an inner surface of a hole of a metal part. The method comprises machining the hole to a cylindrical diameter sufficient to remove the damaged portion therefrom and provide a new hole with a smooth finish into which a metal bushing is inserted, the outer diameter being of size and finish relative to the machined diameter of the hole to provide a close fit therewith, the composition of the metal bushing being compatible with that of the metal part. A cylindrical metal mandrel of diameter corresponding to the inner diameter of the bushing is inserted into the bushing to provide an assembly thereof with the metal part, the metal mandrel having a mean coefficient of thermal expansion greater than that of the metal bushing for a selected solid state diffusion temperature sufficient to provide pressure against the bushing. The assembly under substantially non-oxidizing conditions is then subjected to solid state diffusion at an elevated solid state temperature corresponding to at least about 50% of the absolute melting point (solidus) of the metal part for a time at least sufficient to diffusion bond the bushing under pressure to the metal part by virtue of the expansion of the mandrel in the bushing at the diffusion temperature. The assembly is cooled to ambient, the mandrel removed, and the inner diameter of the diffusion-bonded bushing machined to an appropriate dimension. The diffusion-bonded part is preferably heat treated prior to machining of the bushing.

Abstract translation: 提供一种通过固体扩散来修复金属部件的孔的内表面的损坏部分的方法。 该方法包括将孔加工成足以从其中去除损坏部分的圆柱形直径，并提供具有光滑整理剂的新孔，金属衬套插入其中，外径尺寸和精加工相对于孔的加工直径 为了与其紧密配合，金属衬套的组成与金属部件的组成相适应。 将直径对应于衬套内径的圆柱形金属心轴插入衬套中以提供与金属部件的组件，金属心轴的平均热膨胀系数大于用于所选固体的金属衬套的平均热膨胀系数 状态扩散温度足以向衬套提供压力。 然后将基本上非氧化条件下的组合物在相当于金属部件的绝对熔点（固相线）的至少约50％的升高的固态温度下进行至少足以扩散粘合的时间的固态扩散 由于芯轴在扩散温度下在套管中的膨胀而在金属部件的压力下套管。 将组件冷却至环境温度，将心轴移除，扩散接合衬套的内径加工到适当的尺寸。 扩散接合部分优选在加工衬套之前进行热处理。

公开(公告)号：US4940390A

公开(公告)日：1990-07-10

申请号：US350267

申请日：1989-05-11

Applicant: Robert E. Clark ,  Dennis R. Amos

Inventor： Robert E. Clark ,  Dennis R. Amos

IPC: B23K9/04 ,  B23K9/23 ,  B23K15/00 ,  B23K26/34 ,  F01D5/00

CPC classification number: B23P6/007 ,  B23K15/0086 ,  B23K35/0255 ,  B23K35/0272 ,  B23K9/046 ,  B23K9/23 ,  F01D5/005 ,  B23K2201/001

Abstract: System for repairing worn surfaces of steam turbine components and especially high pressure turbine rotors, are disclosed. These systems include depositing a first layer of weld metal on a worn surface of the component, whereby a heat-affected zone is created. A second layer of weld metal is then deposited over the first layer using a greater amount of heat to temper at least a portion of the heat-affected zone produced by the first layer. The preferred embodiments include the use of gas tungsten arc welding for providing fine-grain size and more creep resistance, especially in the weld and heat-affected zone. The resulting build-up can be machined, for example into a blade fastening to produce a component having properties equal to or better than the base-metal alloy. The invention also provides a longer lasting turbine system, including rotors which have serrated steeples that are more resistant to failure.

公开(公告)号：US4812107A

公开(公告)日：1989-03-14

申请号：US832334

申请日：1986-02-24

Applicant: Santino Barcella ,  Manfred Befeld ,  Guy Faber ,  Paul Slepcevic

Inventor： Santino Barcella ,  Manfred Befeld ,  Guy Faber ,  Paul Slepcevic

IPC: B23K9/00 ,  B23K15/00 ,  B23K26/00 ,  B23K26/20 ,  B23K33/00 ,  B23P15/00 ,  B23P15/02 ,  F01D5/30

CPC classification number: F01D5/3061 ,  B23K33/00 ,  B23K9/0026 ,  B23P15/006 ,  B23K2201/001 ,  F05D2220/31 ,  Y10T29/49321

Abstract: A control wheel intended for welding onto the high-pressure rotor of a steam turbine is manufactured from a ring of individual blades welded together. For this purpose, all of the individual blades are provided with shrouds and root platforms having welding grooves formed therein. After being welded together into a ring, closed on all sides, the control wheel is annealed, machined and finally heat-treated.

Abstract translation: 用于焊接到蒸汽轮机的高压转子上的控制轮由焊接在一起的各个叶片的环制成。 为此，所有单个叶片都设置有在其中形成有焊接槽的护罩和根部平台。 在焊接在一起成环后，将其全部封闭，将控制轮进行退火，机加工，最后进行热处理。

公开(公告)号：US4764658A

公开(公告)日：1988-08-16

申请号：US891325

申请日：1986-07-31

Applicant: Cesare Panzeri

Inventor： Cesare Panzeri

IPC: B23K9/00 ,  B23K9/028 ,  B23K37/04 ,  B23K9/225

CPC classification number: B23K37/04 ,  B23K9/028 ,  B23K2201/001 ,  Y10T29/49325

Abstract: The welding of the body and of the ring with the distributor of a steam turbine diaphragm is carried out in four different areas holding an assembly, formed by two semi-diaphragms, in a substantially vertical position, at most tilted a few degrees off vertical, while four welding units operate simultaneously, two for each face of the assembly, providing for each assembly face to be suitably heated. Two supports are provided, one movable in respect to the other for positioning and handling of the assembly to be treated. Provision is made for vertically adjusting the assembly position with respect to a referring surface, so that the area on which each welding unit works is always on the same level, whatever the dimensions of the assembly to be welded. Provision is also made for heating and insulating both the assembly faces.

Abstract translation: 主体和环与蒸汽轮机隔膜的分配器的焊接在保持由两个半隔膜形成的组件的四个不同的区域中进行，该组件处于基本垂直的位置，最多倾斜垂直几度， 而四个焊接单元同时操作，两个组件的每个面，为每个组装面提供适当的加热。 提供两个支撑件，一个相对于另一个可移动的支架，用于定位和处理待处理的组件。 规定了相对于参考表面垂直调整组装位置，使得每个焊接单元工作的区域始终处于相同的水平面上，无论要焊接的组件的尺寸如何。 还规定了加热和绝缘两个组装面。