Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
권호 표지
DOI QR코드

DOI QR Code

Development of Controlled Gas Nitriding Furnace(II) : Controlled Gas Nitriding System and its Hardware

질화포텐셜 제어 가스질화로 개발(II) : 제어시스템 및 하드웨어

  • Won-Beom Lee (Eco-Friendly Thermal Surface Treatment R&D Department, Korea Institute of Industrial Technology (KITECH)) ;
  • Won-Beom Lee (Eco-Friendly Thermal Surface Treatment R&D Department, Korea Institute of Industrial Technology (KITECH)) ;
  • YuJin Moon (E-Jin Heating System Co., LTD) ;
  • BongSoo Kim (Daekyeong Heat treatment Co., LTD)
  • 이원범 (한국생산기술연구원 친환경열표면처리연구부문) ;
  • 이원범 (한국생산기술연구원 친환경열표면처리연구부문) ;
  • 문유진 (이진히팅시스템) ;
  • 김봉수 (대경열처리)
  • Received : 2023.02.24
  • Accepted : 2023.03.20
  • Published : 2023.03.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper explained the equipment and process development to secure the source technology of controlled nitrification technology. The nitriding potential in the furnace was controlled only by adjusting the flow rate of ammonia gas introduced into the furnace. In addition, a control system was introduced to automate the nitriding process. The equipment's hardware was designed to enable controlled nitriding based on the conventional gas nitriding furnace, and an automation device was attached. As a result of measuring the temperature and quality uniformity for the equipment, the temperature and compound uniformity were ±1.2℃ and 14.3 ± 0.2 ㎛, respectively. And, it was confirmed that nitriding potential was controlled within the tolerance range of AMS2759-10B standard. In addition to parts for controlled nitriding, it was applied to products produced in existing conventional nitriding furnaces, and as a result, gas consumption was reduced by up to 80%.

Keywords

Acknowledgement

이 성과는 정부(산업통상자원부)의 소재부품기술개발사업의 재원을 받아 수행된 연구입니다(No. 20012857).

References

  1. W. B. Lee and S. Son : J. of the Korean Society for Heat Treatment 36 (2023) 40.
  2. AMS standard 2759-10B : Automated Gaseous Nitriding Controlled by Nitriding Potential, (2018 revised) SAE international.
  3. J. Slycke and L. Sproge : Surf. Engineering 5 (1989), 125.
  4. M. A. J. Somers, and E. J. Mittemeijer : Metall & Mat. Trans. 26A (1995) 57.
  5. H. Du, and J. Agren : Metall & Mat. Trans. 27A (1996) 1073.
  6. L. Maldzinski, W. Liliental, G. Tymowski, and J. Tacikowski : Surf. Engineering 15 (1999) 377.
  7. W. B. Lee, K. C. Yu, Y. M. Kim, and J. L. Wi : Korean J. Met. Mater., 54 (2016) 475.
  8. T. H. Kim, S. W. Son, K. T. Cho, K. A. Lee, and W. B. Lee : J. Korean Inst. Surf. Eng. 54 (2021) 267.
  9. Y. M. Kim, S. W. Son, and W. B. Lee : Met. Mater. Int., 24 (2018) 180.
  10. K. H. Kim, W. B. Lee, T. H. Kim, and S. W. Son : Metals 12 (2022) 139.
  11. E. J. Mittemeijer and M. A. J. Somers : Thermochemical surface engineering of steels, Woodhead publishing series in Metals and Surface Enginnering (2015) 32.
  12. Surface Hardening Apparatus and Surface Hardening Treatment Method: WO2019/009408 (2019).
  13. Nitriding apparatus and nitriding method: WO2021/010740 A2 (2021).
  14. AMS standard 2750E: Pyrometry (2012 revised) SAE international.
  15. Automation of nitriding process and atmosphere precise controlled implementation program: C-2022-037613 (2022).