METHODS FOR PREPARING PREFABRICATED CRACK DEFECT AND BUILT-IN CRACK DEFECT, AND PREFABRICATED MEMBER - AECC SHANGHAI COMMERCIAL AIRCRAFT ENGINE MFG CO LTD

Title:

METHODS FOR PREPARING PREFABRICATED CRACK DEFECT AND BUILT-IN CRACK DEFECT, AND PREFABRICATED MEMBER

Document Type and Number:

WIPO Patent Application WO/2021/212847

Kind Code:

A1

Abstract:

A method for preparing a prefabricated crack defect, a method for preparing a built-in crack defect, and a prefabricated member (1). The method for preparing a prefabricated crack defect comprises: setting a defect area (10, 10a); setting the volume proportion of a crack defect in the defect area (10, 10a); on the basis of the volume proportion of the crack defect, adjusting the proportion of spherical powder, the proportion of hollow powder, and the defect preparation process parameters; and, on the basis of a laser melting deposition process, using defect preparation powder and the defect preparation process parameters to print the defect area (10, 10a) layer by layer; the particle size of the defect preparation powder is 45μm-150μm, the proportion of spherical powder is ≥93％, and the proportion of hollow powder is <0.5％; the defect preparation process parameters comprise: laser power 450W-550W, scanning rate 600mm/min-1200mm/min, powder feeding rate 4g/min-12g/min, light spot diameter 1mm-1.2mm, scanning spacing 0.5mm-0.8mm, and layer thickness 0.08mm-0.2mm.

Inventors:

FU JUN (CN)
LEI LIMING (CN)
LI YALI (CN)
ZHOU XINMIN (CN)
FU XIN (CN)

Application Number:

PCT/CN2020/133826

Publication Date:

October 28, 2021

Filing Date:

December 04, 2020

Export Citation:

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Assignee:

AECC SHANGHAI COMMERCIAL AIRCRAFT ENGINE MFG CO LTD (CN)
AECC COMMERCIAL AIRCRAFT ENGINE CO LTD (CN)

International Classes:

B22F3/105; B33Y40/00; B33Y50/02; B33Y80/00

Foreign References:

CN111203538A	2020-05-29
CN111203539A	2020-05-29
CN105598449A	2016-05-25
CN110414873A	2019-11-05
EP3575018A1	2019-12-04
CN107368642A	2017-11-21
CN110472355A	2019-11-19
CN111036908A	2020-04-21
CN108195856A	2018-06-22

Other References: