Failure Analysis and Remanufacturing of Construction Machinery Shafts by HVOF Technique

Ning Ma; Huan Tao Wu; Fu Xing Ye; Guo Sheng Zhang

doi:10.4028/www.scientific.net/AMM.423-426.771

Paper Titles

The Experimental Study of Organizational Structure of Welded Joint and Combining Performance of Laser Welding of Vacuum Glass
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Effect of RF Negative Bias on the Structure and Performance of Diamond-Like Carbon Films in ECR Plasma
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Precision Measurement for Drill Helical Flute Curve
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Determination of Elements in Carbon Fiber Using Inductively Coupled Plasma Mass Spectrometry (ICP-MS)
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Failure Analysis and Remanufacturing of Construction Machinery Shafts by HVOF Technique
p.771

Model Adaptive Learning in Process Control of Strip Cold Rolling
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Effect of Laser Fluence on the Growth of Mo Films Prepared by a Pulsed Laser Deposition Method
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Welding Technology Research for the Train Bogie
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Temperature Distribution Analysis of TIG Welding Process of Thin-Walled Stainless Steel and Red Copper
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 423-426Failure Analysis and Remanufacturing of...

Failure Analysis and Remanufacturing of Construction Machinery Shafts by HVOF Technique

Abstract:

In this work, a scrapped cross shaft which was assembled at the differential of ZL50C loader was analyzed by scanning electron microscopy (SEM) to examine the failure mechanism and was remanufactured by HVOF with ~500μm thickness WC-12Co coatings on it. The microstructure, phase compositions and properties of deposited WC-12Co coatings were investigated through optical microscope (OM), SEM, X-ray diffraction (XRD), microhardness tester and tensile testing machine. The results show that the coatings were very dense, and their porosities were lower than 1%. According to the X-ray Diffraction (XRD) analysis, the phase compositions of the sprayed coatings consisted of WC, Co and W₂C. The microhardness of the coating was approximated to 1100 HV_0.1 and the bonding strength was higher than 63.7 MPa. It can be concluded that WC-12Co coating sprayed by HVOF was suitable for the remanufacturing of shaft parts.