公开(公告)号：US20080135530A1

公开(公告)日：2008-06-12

申请号：US11609150

申请日：2006-12-11

申请人： Ching-Pang Lee ,  Hsin-Pang Wang ,  Ronald Scott Bunker ,  Sudhir Kumar Tewari ,  Magdi Naim Azer

发明人： Ching-Pang Lee ,  Hsin-Pang Wang ,  Ronald Scott Bunker ,  Sudhir Kumar Tewari ,  Magdi Naim Azer

IPC分类号： B23K26/20 ,  B23P15/02

CPC分类号： F01D5/145 ,  B22F3/1055 ,  B22F5/009 ,  B22F5/04 ,  C23C24/10 ,  C23C26/02 ,  F05D2230/234 ,  F05D2230/30 ,  F05D2230/50 ,  F05D2270/17 ,  Y02P10/295 ,  Y10T29/49238 ,  Y10T29/49318 ,  Y10T29/49336 ,  Y10T29/49337 ,  Y10T29/49746

摘要： Disclosed herein is a method comprising creating a weld pool using a laser; wherein the weld pool is created on a part of a turbine; and wherein the weld pool comprises molten metal or ceramic derived as a result of a heat interaction between the laser and the part of the turbine; adding a metal or a ceramic powder or a wire filler to the melt pool; and modifying the part of the turbine in a manner that results in a change of about 0.005 to about 50 volume percent in the part of the turbine, while improving the aerodynamic efficiency of the turbine in an amount of about 0.1 to about 5 percent over a corresponding unmodified turbine.

摘要翻译： 本文公开了一种包括使用激光产生熔池的方法; 其中所述熔池在涡轮机的一部分上产生; 并且其中所述熔池包括由于所述激光器和所述涡轮机的所述部分之间的热相互作用而导出的熔融金属或陶瓷; 在熔池中加入金属或陶瓷粉末或丝线填料; 并且以在涡轮机部分中导致约0.005至约50体积％的变化的方式修改涡轮机的一部分，同时以相对于涡轮机的大约0.1％至大约5％的量改进涡轮机的空气动力学效率 相应的未修改的涡轮机。

公开(公告)号：US08884182B2

公开(公告)日：2014-11-11

申请号：US11609150

申请日：2006-12-11

申请人： Ching-Pang Lee ,  Hsin-Pang Wang ,  Ronald Scott Bunker ,  Sudhir Kumar Tewari ,  Magdi Naim Azer

发明人： Ching-Pang Lee ,  Hsin-Pang Wang ,  Ronald Scott Bunker ,  Sudhir Kumar Tewari ,  Magdi Naim Azer

IPC分类号： B23K26/00 ,  B23P6/00 ,  B64C11/00 ,  F01D5/20 ,  B22F5/00 ,  C23C24/10 ,  B22F3/105 ,  F01D5/14 ,  C23C26/02 ,  B22F5/04

CPC分类号： F01D5/145 ,  B22F3/1055 ,  B22F5/009 ,  B22F5/04 ,  C23C24/10 ,  C23C26/02 ,  F05D2230/234 ,  F05D2230/30 ,  F05D2230/50 ,  F05D2270/17 ,  Y02P10/295 ,  Y10T29/49238 ,  Y10T29/49318 ,  Y10T29/49336 ,  Y10T29/49337 ,  Y10T29/49746

摘要： A method of modifying an end wall contour is provided. The method includes creating a weld pool using a laser, adding a metal or a ceramic powder or a wire filler to the melt pool and modifying the part of the turbine in a manner that results in a change of about 0.005 to about 50 volume percent in the part of the turbine. The weld pool is created on a turbine component and contains molten metal or ceramic derived as a result of a heat interaction between the laser and the turbine component.

摘要翻译： 提供了修改端壁轮廓的方法。 该方法包括使用激光产生熔池，向熔池中加入金属或陶瓷粉末或线填料，并以导致约0.005至约50体积百分比变化的方式改变涡轮机部分 涡轮机的一部分。 焊池在涡轮机部件上产生并且包含由于激光器和涡轮机部件之间的热相互作用导致的熔融金属或陶瓷。

公开(公告)号：US07595894B2

公开(公告)日：2009-09-29

申请号：US11445515

申请日：2006-06-02

申请人： Qingying Hu ,  Magdi Naim Azer ,  Kevin George Harding ,  John Broddus Deaton, Jr. ,  Sudhir Kumar Tewari

发明人： Qingying Hu ,  Magdi Naim Azer ,  Kevin George Harding ,  John Broddus Deaton, Jr. ,  Sudhir Kumar Tewari

IPC分类号： G01B11/24

CPC分类号： G01B11/25 ,  G01B11/2441

摘要： A profilometry apparatus is provided. The profilometry apparatus includes a fringe projection device configured to project a fringe pattern on an object and an optical unit configured to capture an image of a distorted fringe pattern modulated by the object. The profilometry apparatus also includes a signal processing unit configured to process the captured image from the optical unit to filter noise from the image and to obtain real-time estimation of parameters associated with manufacture or repair of the object.

摘要翻译： 提供轮廓测量装置。 轮廓测量装置包括边缘投影装置，其被配置为将物体上的条纹图案投影，以及被配置为捕获被物体调制的失真条纹图案的图像的光学单元。 轮廓测量装置还包括信号处理单元，该信号处理单元被配置为处理来自光学单元的捕获图像以过滤来自图像的噪声并且获得与对象的制造或修复相关联的参数的实时估计。

公开(公告)号：US20100140236A1

公开(公告)日：2010-06-10

申请号：US12328349

申请日：2008-12-04

申请人： Guoshang Cai ,  Kevin George Harding ,  Magdi Naim Azer ,  Yong Liu ,  Sudhir Kumar Tewari ,  Robert William Tait ,  Xiaobin Chen ,  Yanmin Li ,  Huan Qi ,  David Henry Abbott

发明人： Guoshang Cai ,  Kevin George Harding ,  Magdi Naim Azer ,  Yong Liu ,  Sudhir Kumar Tewari ,  Robert William Tait ,  Xiaobin Chen ,  Yanmin Li ,  Huan Qi ,  David Henry Abbott

IPC分类号： B23K26/00

CPC分类号： B23K26/34 ,  B23K26/03

摘要： A laser machining system comprises a laser configured to generate a laser output for forming a molten pool on a substrate, a nozzle configured to supply a growth material to the molten pool for depositing the material on the substrate, and an optical unit configured to capture a plurality of grayscale images comprising temperature data during the laser deposition process, wherein the grayscale images correspond to respective ones of a plurality of radiation beams with different desired wavelengths. Further, the laser machining system comprises an image-processing unit configured to process the grayscale images to retrieve the temperature data according to linear relationships between temperatures in the laser deposition process and the corresponding grayscales of the respective images. A laser machining method is also presented.

摘要翻译： 激光加工系统包括被配置为产生用于在基底上形成熔池的激光输出的激光器，被配置为向所述熔池供应生长材料以将所述材料沉积在所述基板上的喷嘴以及被配置为捕获 多个灰度图像，包括在激光沉积过程期间的温度数据，其中灰度图像对应于具有不同期望波长的多个辐射束中的相应的一个。 此外，激光加工系统包括图像处理单元，其被配置为处理灰阶图像，以根据激光沉积工艺中的温度与相应图像的相应灰度之间的线性关系来检索温度数据。 还提出了激光加工方法。

公开(公告)号：US20070279639A1

公开(公告)日：2007-12-06

申请号：US11445515

申请日：2006-06-02

申请人： Qingying Hu ,  Magdi Naim Azer ,  Kevin George Harding ,  John Broddus Deaton ,  Sudhir Kumar Tewari

发明人： Qingying Hu ,  Magdi Naim Azer ,  Kevin George Harding ,  John Broddus Deaton ,  Sudhir Kumar Tewari

IPC分类号： G01B11/02

CPC分类号： G01B11/25 ,  G01B11/2441

摘要： A profilometry apparatus is provided. The profilometry apparatus includes a fringe projection device configured to project a fringe pattern on an object and an optical unit configured to capture an image of a distorted fringe pattern modulated by the object. The profilometry apparatus also includes a signal processing unit configured to process the captured image from the optical unit to filter noise from the image and to obtain real-time estimation of parameters associated with manufacture or repair of the object.

摘要翻译： 提供轮廓测量装置。 轮廓测量装置包括边缘投影装置，其被配置为将物体上的条纹图案投影，以及被配置为捕获被物体调制的失真条纹图案的图像的光学单元。 轮廓测量装置还包括信号处理单元，该信号处理单元被配置为处理来自光学单元的捕获图像以过滤来自图像的噪声并且获得与对象的制造或修复相关联的参数的实时估计。

公开(公告)号：US06495793B2

公开(公告)日：2002-12-17

申请号：US09833487

申请日：2001-04-12

申请人： Sudhir Kumar Tewari

发明人： Sudhir Kumar Tewari

IPC分类号： B23K2634

CPC分类号： B23P6/007 ,  B23K26/144 ,  B23K26/32 ,  B23K26/34 ,  B23K26/342 ,  B23K35/0244 ,  B23K35/0255 ,  B23K35/3033 ,  B23K2101/001 ,  B23K2103/26 ,  C23C24/10 ,  F01D5/005

摘要： A laser repair method for a high gamma prime content Ni base superalloy substrate surface, with gamma prime content in the range of at least about 30 volume %, conducts the repair at ambient temperature without preheating the substrate surface and by controlling processing parameters to avoid cracking of the resulting weld bead during and after welding. The laser beam, operating in a power range of about 50-10000 watts per centimeter, is focused away from the substrate surface to provide a laser spot in the size range of about 0.03-0.2″. A relative movement between the substrate surface and the laser beam, for example at a rate in the range of about 1-100 inches per minute, provides an interaction time of no greater than about 10 seconds between the laser beam and the substrate surface. Concurrently, a repair alloy powder is deposited in the laser beam to melt and fuse the repair alloy powder into a molten repair alloy deposited on the substrate surface.

摘要翻译： 对于具有至少约30体积％范围内的γ原子含量的高γ'含量的Ni基超合金基底表面的激光修复方法，在环境温度下进行修复而不预热衬底表面并通过控制加工参数以避免开裂 在焊接期间和之后产生的焊缝。 在大约50-10000瓦特/厘米的功率范围内工作的激光束被聚焦在远离衬底表面以提供大约0.03-0.2“尺寸范围内的激光光点。 衬底表面和激光束之间的相对运动，例如以约1-100英寸/分钟的范围内的速率提供在激光束和衬底表面之间不大于约10秒的相互作用时间。 同时，在激光束中沉积修复合金粉末，熔化并将修复合金粉末熔化成沉积在基材表面上的熔融修复合金。