Title:
SURFACE FINISHING METHOD FOR MICRO INTERNAL FLOW CHANNEL, MICRO INTERNAL FLOW CHANNEL WORKPIECE, AND FINISHING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/241408
Kind Code:
A1
Abstract:
A surface finishing method for a micro internal flow channel, a micro internal flow channel workpiece, and a finishing medium. The bore of the micro internal flow channel is less than or equal to 3 mm, and the length-to-diameter ratio of the micro internal flow channel is greater than or equal to 50:1. The finishing method comprises: a liquid-solid two-phase flow finishing medium is used, the liquid phase viscosity of the finishing medium is less than 1000 cP, and the solid phase of the finishing medium is abrasive grains (1); and a predetermined pressure is applied to the finishing medium, so that the finishing medium flows in the micro internal flow channel at a flow rate of greater than 5 m/s, and the flow of the finishing medium flowing into the micro internal flow channel from one end of the micro internal flow channel reaches a saturation value of flow allowed by the bore of the micro internal flow channel, so that the hydraulic pressure inside the internal flow channel is in a pressure building state. The surface finishing method for a micro internal flow channel can achieve targeted machining of bumps on a rough surface, is not limited by the material of the micro internal flow channel, and obtains a super mirror quality in which an optimal surface roughness range is consistent with an abrasive grain average edge contact length range.
Inventors:
LEI LIMING (CN)
MI TIANJIAN (CN)
WANG XIAOKANG (CN)
FAN LINNA (CN)
ZHOU XINMIN (CN)
WANG WEI (CN)
GAO JUNSHUAI (CN)
MI TIANJIAN (CN)
WANG XIAOKANG (CN)
FAN LINNA (CN)
ZHOU XINMIN (CN)
WANG WEI (CN)
GAO JUNSHUAI (CN)
Application Number:
PCT/CN2023/098660
Publication Date:
December 21, 2023
Filing Date:
June 06, 2023
Export Citation:
Assignee:
AECC SHANGHAI COMMERCIAL AIRCRAFT ENGINE MFG CO LTD (CN)
SHAANXI JXTT MATERIAL TECH CO LTD (CN)
SHAANXI JXTT MATERIAL TECH CO LTD (CN)
International Classes:
B24B31/116; B24B1/00; B24B31/14; B24C11/00
Foreign References:
| CN114734365A | 2022-07-12 | |||
| CN114750063A | 2022-07-15 | |||
| CN114734307A | 2022-07-12 | |||
| CN1347788A | 2002-05-08 | |||
| JP2004034258A | 2004-02-05 | |||
| JP2008137092A | 2008-06-19 | |||
| US5807163A | 1998-09-15 |
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
Download PDF: