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Abrasive-assisted Nickel Electroforming Process with Moving Cathode

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Abstract

In traditional electroforming process for revolving parts with complex profiles, the drawbacks on surface of deposits, such as pinholes and nodules, will lead to varying physical and mechanical properties on different parts of electroformed components. To solve the problem, compositely moving cathode is employed in abrasive-assisted electroforming of revolving parts with complicated profiles. The cathode translates and rotates simultaneously to achieve uniform friction effect on deposits without drawbacks. The influences of current density and translation speed on the microstructure and properties of the electroformed nickel layers are investigated. It is found that abrasive-assisted electroforming with compound cathode motion can effectively remove the pinholes and nodules, positively affect the crystal nucleation, and refine the grains of layer. The increase of current density will lead to coarse microstructure and lower micro hardness, from 325 HV down to 189 HV. While, faster translational linear speed produces better surface quality and higher micro hardness, from 236 HV up to 283 HV. The weld-ability of the electroformed layers are also studied through the metallurgical analysis of welded joints between nickel layer and 304 stainless steel. The electrodeposited nickel layer shows fine performance in welding. The novel compound motion of cathode promotes the mechanical properties and refines the microstructure of deposited layer.

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Authors and Affiliations

  1. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

    Jianhua REN, Zengwei ZHU, Chunqiu XIA, Ningsong QU & Di ZHU

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  1. Jianhua REN
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  2. Zengwei ZHU
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  3. Chunqiu XIA
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  4. Ningsong QU
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  5. Di ZHU
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Corresponding author

Correspondence to Zengwei ZHU.

Additional information

Supported by National Natural Science Foundation of China (Grant No. 51475239) and Program for New Century Excellent Talents in University of China (Grand No. NCET-10-0074).

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REN, J., ZHU, Z., XIA, C. et al. Abrasive-assisted Nickel Electroforming Process with Moving Cathode. Chin. J. Mech. Eng. 30, 294–300 (2017). https://doi.org/10.1007/s10033-017-0078-4

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  • DOI: https://doi.org/10.1007/s10033-017-0078-4

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