Title:
LASER COMPOSITE REPAIRING METHOD FOR OFFSHORE PLATFORM PILE LEG CAPABLE OF ELIMINATING CLADDING LAYER INTERFACE
Document Type and Number:
WIPO Patent Application WO/2023/036141
Kind Code:
A1
Abstract:
The present invention relates to the technical field of laser processing, and provides a laser composite repairing method for an offshore platform pile leg capable of eliminating a cladding layer interface, comprising: extracting an offshore platform pile leg defect model; machining a defect area to obtain a shape suitable for cladding repairing; configuring cladding powder; regulating and controlling laser cladding process parameters; performing laser shock peening; observing an interface elimination effect by means of EBSD; regulating and controlling the laser shock process parameters; removing a cladding layer higher than the surface of a part and the like, so as to complete repairing of the damaged position of the offshore platform pile leg. In the present invention, the cladding powder with the impedance similar to that of an offshore platform pile leg base body is selected, the cladding process parameters and the impact process parameters are regulated and controlled, impact waves generated by laser impact are used for generating large-scale transmission on the close impedance material interface, crystal grains of the cladding layer and crystal grains of an interface area between the cladding layer and the offshore platform pile leg base body are refined, and the interface is eliminated, such that the overall strength of the repaired offshore platform pile leg part is improved.
Inventors:
XIE PENGPENG (CN)
CAO YUPENG (CN)
HUA GUORAN (CN)
SHI WEIDONG (CN)
WANG HENG (CN)
CHOU MING (CN)
WANG ZHENGANG (CN)
SU BOYONG (CN)
CAO YUPENG (CN)
HUA GUORAN (CN)
SHI WEIDONG (CN)
WANG HENG (CN)
CHOU MING (CN)
WANG ZHENGANG (CN)
SU BOYONG (CN)
Application Number:
PCT/CN2022/117341
Publication Date:
March 16, 2023
Filing Date:
September 06, 2022
Export Citation:
Assignee:
UNIV NANTONG (CN)
International Classes:
C23C24/10; C22C38/02; C22C38/44; C22C38/46; C22C38/58
Foreign References:
| CN113718246A | 2021-11-30 | |||
| CN104480476A | 2015-04-01 | |||
| US20190047050A1 | 2019-02-14 |
Other References:
CAO YUPENG, SHUAI WANG, WEIDONG SHI, MING QIU, GUORAN HUA, BIN LI : "Effect of Laser Shock on Microstructure of the Repair Layer of E690 High Strength Steel by Laser Cladding", ACTA PHOTONICA SINICA, SCIENCE PRESS, BEIJING., CN, vol. 50, no. 4, 30 April 2021 (2021-04-30), CN , pages 91 - 101, XP093043868, ISSN: 1004-4213, DOI: 10.3788/gzxb20215004.0414001
Attorney, Agent or Firm:
BEIJING JILONG INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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