公开(公告)号：US11247249B2

公开(公告)日：2022-02-15

申请号：US16606545

申请日：2017-04-18

Applicant: General Electric Company

Inventor： Yibo Gao ,  Hong Zhou ,  Liming Zhang ,  Yong Liu ,  Yingna Wu ,  Jianping Wu

IPC: B08B3/10 ,  B08B7/00 ,  B08B3/08 ,  B08B3/12 ,  B08B7/04 ,  C23G5/00 ,  F01D25/00

Abstract: A method for removing oxide materials from a crack of a metallic workpiece comprises: infiltrating an alkali solution into the crack in a pressurized atmosphere or an ultrasonic environment; applying an energy to the crack to react the oxide materials with the alkali solution and form a resultant material; and rinsing the resultant material with an acid solution to remove the resultant material from the crack. The method is easier to penetrate into the inside of the cracks, in particular suitable for cleaning narrow and deep cracks.

公开(公告)号：US20210178520A1

公开(公告)日：2021-06-17

申请号：US16759025

申请日：2018-10-26

Applicant: General Electric Company

Inventor： Zirong Zhai ,  Dalong Zhong ,  Yingna Wu ,  Bin Wei ,  Yong Yang ,  Xiaobin Chen

IPC: B23K26/34 ,  B23K26/354 ,  B21J5/00 ,  B22F10/28 ,  B22F10/50 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y30/00

Abstract: The present invention relates to an additive manufacturing system and its methods. The system includes a material conveyor, an energy source, and a micro-forging device. The material conveyor is configured to convey material. The energy source is configured to direct an energy beam toward the material, the energy beam fuses at least a portion of the material to form a solidified portion. The micro-forging device is movable along with the material conveyor for forging the solidified portion, wherein the micro-forging device comprises a first forging hammer and a second forging hammer, the first forging hammer is configured to impact the solidified portion to generate a first deformation, and the second forging hammer is configured to impact the solidified portion to generate a second deformation greater than the first deformation.