Iron-based alloy powder for laser refabrication of rotor journal, and refabrication method thereof
A laser remanufacturing, iron-based alloy technology, applied in metal material coating process, coating and other directions, can solve the problems of increasing the cost of replacing the rotor, difficult to install and use again, not meeting energy saving and consumption reduction, etc. Good oxidation performance, excellent quality, and the effect of prolonging the service life
Inactive Publication Date: 2017-02-22
ZHEJIANG UNIV OF TECH
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Abstract
The invention discloses an iron-based alloy powder for the laser refabrication of a rotor journal, and a refabrication method thereof. The iron-based alloy powder comprises the following components in weight percentage: 0.03-0.1% of C, 13.0-16.0% of Cr, 0.9-1.5% of Si, 0.5-1.0% of B and iron as the balance. The laser refabrication method comprises the steps of (1) subjecting the failure part of a rotor journal to the lathe machining treatment to enable the surface thereof to be clean and flat, and removing oil; (2) adding the dried iron-based alloy powder into a powder feeder; (3) adjusting the laser position to be within a to-be-repaired region, and editing a program; (4) setting laser process parameters; (5) according to actual needs, repeating the laser cladding process to form multiple cladding layers till the cladding layers exceed a target size and a machining allowance is reserved; (6) turning to reach the target size by a lathe; (7) conducting the hardness and crack detection. According to the invention, the performance of a coating is approximate to the performance of an original new product. Meanwhile, the advantages of wide process adaptability, consistent repeatability and strong operability are realized.
Application Domain
Metallic material coating processes
Technology Topic
RemanufacturingIron based alloy +6
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PUM
Property | Measurement | Unit |
Vickers hardness | 321.0 ~ 353.0 | |
Vickers hardness | 307.0 | |
Hardness | 286.0 |
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