Study on Remanufacturing Repair of Damaged Crank Shaft Journal Surface by Laser Cladding

Hui, 封慧 Feng; Jianfeng, 李剑峰 Li; Jie, 孙杰 Sun

doi:10.3788/cjl201441.0803003

Cited by 3 publications

(1 citation statement)

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“…[1][2][3] With the continuous improvement of the remanufactured product performance and the deepening of the remanufacturing concept, remanufactured products play an important role in the field of green products. [4][5][6] Cleaning is an indispensable craft in the remanufacturing process, and the surface cleanliness of remanufactured parts is related to subsequent detection, repair, processing, and assembly. 7,8 Remanufacturing blank surface cleanliness can affect the discovery of microcrack as well as the qualitative and judgment of the damage degree during the testing phase.…”

Section: Introductionmentioning

confidence: 99%

Carbon deposition mechanism of molten salt cleaning and optimization of multicomponent molten salt formula for remanufacturing

Zhang

et al. 2021

Science Progress

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In remanufacturing engineering, cleaning is the key factor for subsequent blank inspection and parts repair. Molten salt has the characteristics of low viscosity, good fluidity, and strong chemical stability. Salt bath cleaning can be comprehensively applied to remove various organic pollutants. Molten salt has the function of self-cleaning. The dirt in the cleaning pool can be decomposed and reused. Moreover, the waste molten salt is massive, and the waste residue is easy to treat. The formation and adsorption mechanism of carbon deposition was explored, and the formation mechanism of carbon deposition was verified by experiments. Then, the existing formula was improved by mixing experiment and compared with the current cleaning method; the cleaning effect was excellent. A new molten salt formula is proposed on the basis of the research on solar thermal storage medium. The composition percentage and the optimal process parameters of the new molten salt formula were determined on the basis of the experimental design of mixture. The cleaning effect of the new formula is good.

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Section: Introductionmentioning

confidence: 99%

Carbon deposition mechanism of molten salt cleaning and optimization of multicomponent molten salt formula for remanufacturing

Zhang

et al. 2021

Science Progress

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Numerical Simulation of the Temperature and Stress Fields in Fe-Based Alloy Coatings Produced by Wide-Band Laser Cladding

Shao

Tian

2021

Met Sci Heat Treat

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Microstructure, wear and electrochemical behaviors of laser cladding Fe-based coatings with various molybdenum contents

Li¹,

Wang²,

Zhang³

et al. 2022

Mater. Res. Express

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Fe-based alloy coatings with different Mo contents were fabricated on 45 steel substrates by laser cladding. X-ray diffractometer (XRD), scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS) were used to analyze the phase composition and microstructural evolution of the coatings. The effects of Mo addition on the wear and electrochemical behaviors of the coatings were analyzed by ball-on-disc wear tester and electrochemical workstation. The results showed that the addition of Mo could help refine grains and promote the transition of dendrites to equiaxed grains. With the increase of Mo content, the hard phases changed from Fe2B to Mo2FeB2. Mo and Cr tend to aggregate in the intercrystalline regions in the form of hard phases. When the Mo content was 4.8 wt.%, the hardness increased by 3.6 times compared with that of the substrate. The wear resistance of the coatings increased with the Mo addition. Mo played the role of fine grain strengthening and solid solution strengthening, which was beneficial for the improvement of the hardness and wear resistance. Polarization curves and electrochemical impedance spectroscopy test results revealed that the addition of Mo could improve the corrosion resistance of Fe-based coating.

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Study on Remanufacturing Repair of Damaged Crank Shaft Journal Surface by Laser Cladding

Cited by 3 publications

References 0 publications

Carbon deposition mechanism of molten salt cleaning and optimization of multicomponent molten salt formula for remanufacturing

Carbon deposition mechanism of molten salt cleaning and optimization of multicomponent molten salt formula for remanufacturing

Numerical Simulation of the Temperature and Stress Fields in Fe-Based Alloy Coatings Produced by Wide-Band Laser Cladding

Microstructure, wear and electrochemical behaviors of laser cladding Fe-based coatings with various molybdenum contents

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