公开(公告)号：US12103136B2

公开(公告)日：2024-10-01

申请号：US17406536

申请日：2021-08-19

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Zhigang Wang ,  Paul F. Croteau ,  Gajawalli V. Srinivasan ,  John D. Riehl ,  Robin H. Fernandez

IPC: B24C1/04 ,  B24C7/00

CPC classification number: B24C1/045 ,  B24C7/0007

Abstract: A method of machining includes mounting a component in a drilling machine. The component has a target region where the hole is to be drilled. The component and a jet head are situated relative to each other in a drilling arrangement in which the target region is at a first position that is vertically equal to or vertically above a second position at which the jet head is located. A liquid stream is jetted from the jet head and contains either abrasive particles or a laser beam. The stream impinges the target region, and the abrasive particles or the laser beam cause removal of material from the component to form the hole. The liquid stream rebounds off of the component as back-splash. The drilling arrangement causes gravitational draining of the back-splash from the target region to reduce interference between the back-splash and the liquid stream.

公开(公告)号：US20240246193A1

公开(公告)日：2024-07-25

申请号：US18099491

申请日：2023-01-20

Applicant: Raytheon Technologies Corporation

Inventor： Zhigang Wang ,  Andrzej E. Kuczek ,  Gajawalli V. Srinivasan ,  Robin H. Fernandez ,  John D. Riehl ,  Alan C. Barron ,  Ahmed Abdillahi Abdi ,  Jason Nelson ,  Andrew Joseph Lazur

IPC: B24B41/00 ,  B24B1/04

CPC classification number: B24B41/002 ,  B24B1/04

Abstract: A tool for ultrasonic impact grinding apparatus driven to vibrate along a longitudinal axis at an applied operating frequency includes a tool body disposed on the longitudinal axis, a first tip extending from an output end of the tool body, and a second tip extending in parallel to the first tip from the output end of the tool body. The first tip has a first length. The second tip has a second length greater than the first length. A mass of the first and second tip is substantially balanced across the output end of the tool body and with respect to the longitudinal axis.

公开(公告)号：US20230250033A1

公开(公告)日：2023-08-10

申请号：US17665069

申请日：2022-02-04

Applicant: Raytheon Technologies Corporation

Inventor： Zhigang Wang ,  Xia Tang ,  James T. Beals ,  Gajawalli V. Srinivasan ,  John D. Riehl ,  Brian T. Hazel ,  David A. Litton

IPC: C04B41/50 ,  C04B41/45 ,  F01D5/28

CPC classification number: C04B41/5059 ,  C04B41/4531 ,  F01D5/282 ,  F01D5/284 ,  C04B2235/74

Abstract: An adaptive surface texturing method is provided for use with a part formed of ceramic matrix composites (CMCs) to be coated with an environmental barrier coating (EBC). The method includes coating a CMC surface of the part with an initial coating, determining a contour and an undulation pattern of the CMC surface and designing a texturing pattern to follow the contour and the undulation pattern and to be formed in the initial coating based on a thickness of the initial coating and an average particle size of a slurry of the EBC.

公开(公告)号：US20230158629A1

公开(公告)日：2023-05-25

申请号：US17988879

申请日：2022-11-17

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Zhigang Wang ,  John D. Riehl ,  Robin H. Fernandez ,  Andrzej Ernest Kuczek ,  Gajawalli V. Srinivasan

IPC: B24B7/22

CPC classification number: B24B7/22

Abstract: A method for machining a ceramic workpiece includes providing a sonotrode that has a transducer and a horn arranged along an axis, and the horn has helical slots and terminates at a tip, bringing the tip into proximity of the ceramic workpiece and providing an abrasive media to a work zone around the tip, using the transducer to produce ultrasonic vibration that axially propagates down the horn and causes axial vibration at the tip, and the helical slots convert a portion of the axial vibration to torsional vibration at the tip, and the axial vibration and the torsional vibration causing the abrasive media to abrade the ceramic workpiece in the work zone and thereby remove a localized portion of the ceramic workpiece.

公开(公告)号：US11828196B2

公开(公告)日：2023-11-28

申请号：US17587246

申请日：2022-01-28

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Zhigang Wang ,  Tahany El-Wardany ,  Xia Tang ,  Gajawalli V. Srinivasan ,  Anthony G. Ruglio ,  Xiaomei Fang

IPC: F01D5/28 ,  F01D25/24

CPC classification number: F01D5/288 ,  F01D25/24 ,  F05D2250/184 ,  F05D2250/185 ,  F05D2300/611

Abstract: A gas turbine engine article includes a substrate that has a pre-bond surface that includes a serpentine groove. A coating is disposed on the pre-bond surface and mechanically interlocks with the serpentine groove.

公开(公告)号：US20230191658A1

公开(公告)日：2023-06-22

申请号：US17554748

申请日：2021-12-17

Applicant: Raytheon Technologies Corporation

Inventor： Zhigang Wang ,  John D. Riehl ,  Robin H. Fernandez ,  Andrzej E. Kuczek ,  Gajawalli V. Srinivasan

IPC: B28B11/08 ,  B28B13/02 ,  B28B17/00

CPC classification number: B28B11/0881 ,  B28B13/0275 ,  B28B17/0081 ,  B28B2013/0265

Abstract: A method is provided for machining a workpiece. During this machining method, an aperture is formed in the workpiece using a machining system. The machining system includes an ultrasonic machining device, a slurry delivery device and a controller. The forming of the aperture includes delivering a slurry to an interface between the ultrasonic machining device and the workpiece using the slurry delivery device, and transmitting ultrasonic vibrations into the slurry using the ultrasonic machining device. A feedback parameter is monitored during the forming of the aperture using the controller. A slurry delivery parameter for the slurry delivery device is adjusted during the forming of the aperture based on the feedback parameter using the controller.

公开(公告)号：US20240246192A1

公开(公告)日：2024-07-25

申请号：US18099497

申请日：2023-01-20

Applicant: Raytheon Technologies Corporation

Inventor： Zhigang Wang ,  Andrzej E. Kuczek ,  Gajawalli V. Srinivasan ,  Robin H. Fernandez ,  John D. Riehl ,  Alan C. Barron ,  Ahmed Abdillahi Abdi ,  Jason Nelson ,  Andrew Joseph Lazur

IPC: B24B39/00 ,  B24B1/04

CPC classification number: B24B39/006 ,  B24B1/04

Abstract: A tool for an ultrasonic impact grinding machine driven to vibrate along a longitudinal axis includes a hollow tool body and a hollow tip extending from an end of the hollow tool body. The hollow tip has an outer surface comprising a plurality of grooves. The hollow tool body and the hollow tip are disposed about the longitudinal axis and the hollow tip and hollow tool body are each defined in part by a common bore extending along the longitudinal axis.

公开(公告)号：US20230243269A1

公开(公告)日：2023-08-03

申请号：US17587246

申请日：2022-01-28

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Zhigang Wang ,  Tahany El-Wardany ,  Xia Tang ,  Gajawalli V. Srinivasan ,  Anthony G. Ruglio ,  Xiaomei Fang

IPC: F01D5/28 ,  F01D25/24

CPC classification number: F01D5/288 ,  F01D25/24 ,  F05D2250/185 ,  F05D2250/184 ,  F05D2300/611

Abstract: A gas turbine engine article includes a substrate that has a pre-bond surface that includes a serpentine groove. A coating is disposed on the pre-bond surface and mechanically interlocks with the serpentine groove.

公开(公告)号：US20230193772A1

公开(公告)日：2023-06-22

申请号：US17557224

申请日：2021-12-21

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Zhigang Wang ,  John D. Riehl ,  Andrew J. Lazur ,  Robin H. Fernandez ,  Paul F. Croteau ,  Gajawalli V. Srinivasan ,  Ashley A. Smith

IPC: F01D9/06 ,  B23K26/382 ,  B23K26/146 ,  B23B35/00 ,  G06F30/20

CPC classification number: F01D9/065 ,  B23K26/389 ,  B23K26/146 ,  B23B35/00 ,  G06F30/20 ,  F05D2220/32 ,  F05D2230/13 ,  B23K2103/52

Abstract: A method of machining cooling holes includes providing a workpiece in which a cooling hole is to be formed. The cooling hole, once formed, defines distinct first and second sections. The workpiece is secured in a fixture that is mounted in a first machine. In the first machine, a laser is used to drill a through-hole in a wall of the workpiece. The through-hole is spatially common to the first and second sections of the cooling hole. After drilling the through-hole, the fixture with the workpiece secured therein is removed from the first machine and mounted in a second machine. In the second machine, ultrasonic machining is used to expand a portion of the through-hole to form the second section. An abrasive slurry used in the process is drained through the through-hole during the ultrasonic machining.

公开(公告)号：US20240424606A1

公开(公告)日：2024-12-26

申请号：US18213537

申请日：2023-06-23

Applicant: Raytheon Technologies Corporation

Inventor： Zhigang Wang ,  Andrzej E. Kuczek ,  Robin H. Fernandez ,  Alan C. Barron ,  Ahmed Abdillahi Abdi ,  Jason Nelson ,  Andrew Joseph Lazur

IPC: B23K26/122 ,  B23K26/064 ,  B23K26/38

Abstract: A method of machining a feature in a workpiece includes orienting a waterjet guided laser device about the workpiece, ejecting a waterjet from a nozzle of the waterjet guided laser device, impinging the waterjet against the workpiece along a tool path causing a corresponding removal of material therefrom, and generating a non-uniform electric field proximate the waterjet to cause a deflection of the waterjet as the waterjet is impinging against the workpiece.