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진동을 이용한 크로메이트 도금 특성의 개선

Improvement of Chromate Plating Characteristics Using Vibration

Journal of the Korean Society for Precision Engineering 2020;37(1):11-16.
Published online: January 1, 2020

1 한국산업기술대학교 지식기반에너지대학원

2 한국산업기술대학교 기계공학과

1 Graduate of Knowledge-Based Technology & Energy, Korea Polytechnic University

2 Department of Mechanical Engineering, Korea Polytechnic University

#E-mail: ljh@kpu.ac.kr, TEL: +82-31-8041-0403
• Received: June 18, 2019   • Revised: October 12, 2019   • Accepted: November 16, 2019

Copyright © The Korean Society for Precision Engineering

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Citations

Citations to this article as recorded by  Crossref logo
  • Plating Characteristics of Random-Loaded Workpiece Through Screw Motion
    Duck Gi Kim, Jong Hang Lee
    Journal of the Korean Society of Manufacturing Technology Engineers.2020; 29(6): 512.     CrossRef

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Improvement of Chromate Plating Characteristics Using Vibration
J. Korean Soc. Precis. Eng.. 2020;37(1):11-16.   Published online January 1, 2020
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Improvement of Chromate Plating Characteristics Using Vibration
J. Korean Soc. Precis. Eng.. 2020;37(1):11-16.   Published online January 1, 2020
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Improvement of Chromate Plating Characteristics Using Vibration
Image Image Image Image Image Image Image Image Image Image
Fig. 1 Chemical plating apparatus using vibration
Fig. 2 Air cylinder and vibrator
Fig. 3 Randomly loaded workpiece in the basket
Fig. 4 Accelerometer setup on the basket to detect vibrating frequency
Fig. 5 Chromate plated samples according to the variation of vibrating frequency (0.0-32 Hz)
Fig. 6 Chromate plated mass trend according to the variation of vibrating frequency (0.0-32.5 Hz)
Fig. 7 30 samples for the investigation of plating characteristics between samples using vibrating frequency
Fig. 8 Chromate mass distribution between 30 samples (Adapted from Ref. 7 on the basis of Open Access)
Fig. 9 Chromate plated samples according to the variation of injecting pressure at the vibrating frequency of 31 Hz
Fig. 10 Chromate plating characteristics according to the variation of injecting pressure and vibrating frequency
Improvement of Chromate Plating Characteristics Using Vibration

Experimental conditions for plating characteristics according to variation of vibrating frequency

Classification (Group) 1 2 3 4
Frequency (Hz) 0.0 8.5, 9.5, 14.5, 18 23, 27, 29, 29.5, 30, 30.5, 31 32, 32.5
Workpiece state No move Small move Sufficient or extremely movement Basket resonance

Experimental conditions for the hybrid of vibration and pressurized floating

Plating method Vibrating frequency (Hz) Floating pressure (kN/m2)
Conditions 8.5, 27, 31 0, 6, 10, 20, 30

Comparison of the experimental results between pressurized floating and vibration

(unit: % weight)

Method Mean (%) Mean difference (%) Std. (%) Std. difference (%)
Pressure 0.347 0.039
(12.7▲)
0.069
(reference)
0.004
(5.8▼)
Vibration 0.308
(reference)
0.065
Table 1 Experimental conditions for plating characteristics according to variation of vibrating frequency
Table 2 Experimental conditions for the hybrid of vibration and pressurized floating
Table 3 Comparison of the experimental results between pressurized floating and vibration (unit: % weight)