The "IFHTSE World Congress" is the highest-level academic conference in the field of heat treatment and surface engineering. The 30th edition of the conference was held in Suzhou from August 20 to 22, 2025, marking the fifth time this series of conferences has been hosted in China. After a gap of 7 years, China has made numerous groundbreaking advances in this field. The conference gathered nearly 1,000 industry representatives from more than 40 countries and regions to discuss the latest achievements and industry trends.

At this international event, Fengdong, as an industry leader, actively participated by presenting 13 high-level papers and sharing cutting-edge technologies and practical experiences in specialized forums, attracting widespread attention.

Plenary Lectures

1.Gan Yong[China], Academician, China Iron & Steel Research Institute Group Co., Ltd., Chinese Academy of Engineering

2.Prof. Massimo Pellizzari[Italy], President of IFHTSE, University of Trento

—— Impact of Heat Treatment and Nitriding on the Properties of Additively Manufactured Tool Steel

3.Zhang Fucheng[China], Academician, North China University of Science and Technology, Chinese Academy of Engineering

—— Research Progress of High Manganese Steel

4.Prof. Marcel A. J. Somers[Danmark], Executive Committee Member of IFHTSE, Technical University of Denmark

—— Thermally Activated Martensite Formation: An Exception or the Rule?

5.Han Enhou[China], Academician, South China University of Technology, Chinese Academy of Engineering

—— Surface Technologies to Control Corrosion - Progress and Trends

6.Prof. Yoichi Watanabe[Japan], Vice President of JSHT, Nihon Parkerizing Co., Ltd.

—— Current Status and Prospects of Surface Heat Treatment Technologies Utilizing Nitrogen Effectively

Special Forum on Heat Treatment and Surface Engineering Equipment (Fengdong PART)

"Precision Controlled Atmosphere Heat Treatment and Its Emission Reduction Technology"

At this conference, the Special Forum on Heat Treatment and Surface Engineering Equipment, chaired by Mr. Han Boqun, Deputy General Manager of Jiangsu Fengdong, captured broad attention. Mr. Han delivered a keynote report on the topic of "Precision Controlled Atmosphere Heat Treatment and Its Emission Reduction Technology," where he introduced the company's research and application progress in precision controlled atmosphere heat treatment and reduction technology in recent years, in response to the background of green manufacturing, low-carbon, and the "dual carbon" strategy.

In the report, it was introduced that Fengdong, through computer-aided design software, precisely designs and optimizes the temperature field and airflow field of the equipment, effectively improving the uniformity of temperature and atmosphere in carburizing furnaces. The company has launched a 6-ton large pre-evacuated vacuum controlled atmosphere multi-purpose furnace, which uses the pre-evacuation method in the front chamber. This greatly reduces the air intake when workpieces enter the furnace, minimizing internal oxidation, accelerating atmosphere recovery, and featuring a flame curtain-free structure, making the equipment safer with a high level of automation.

At the same time, Fengdong's developed atmosphere recovery device has successfully reduced the gas consumption of carburizing furnaces by about 30%. The waste heat recovery technology for heat treatment can achieve a comprehensive energy-saving effect of 5-10%. Additionally, the successful development and application of the LMS/FMS intelligent management system enables full-process digital and intelligent management of heat treatment product production, effectively driving the intelligent development of the industry.

"Study on High-Concentration Deep Vacuum Carburizing-Nitriding Thermal Treatment Process"

Zhang Zhichong, Head of the Processing Division at Jiangsu Fengdong, shared a keynote report on the topic of "Study on High-Concentration Deep Vacuum Carburizing-Nitriding Thermal Treatment Process" at the conference.

In the report, the research team conducted a comprehensive analysis of the performance of 18CrNiMo7-6 camshafts after vacuum carburizing (970°C), gas cooling, nitriding, quenching, and low-temperature tempering using various testing methods, including optical microscopy, electron probe microanalysis (EPMA), spectral composition analysis, residual austenite measurement, and hardness/hardening depth testing.

The results showed that after this process treatment, the microstructure of the workpiece surface primarily consisted of martensite, residual austenite, and dispersed carbonitrides. The effective hardened depth was approximately 1.8 mm, with a surface carbon content of 1.2%, nitrogen content of 0.76%, surface hardness exceeding 60 HRC, and a residual austenite content of around 25%. This research successfully overcame the contradiction between high surface hardness and high residual austenite content, providing valuable insights for process optimization in relevant industries.

Forging Strength through Innovation

  This time, Fengdong organized its technical team to actively participate in the 30th World Conference on Heat Treatment and Surface Engineering. The team learned from industry experts about cutting-edge technological research achievements while also sharing the company's recent progress and practices in product research and development. In the future, Fengdong will continue to deepen its focus on technological research and development, contributing even more to the advancement of the industry.

Appendix: Fengdong Group Heat Treatment Conference Paper List

1. Han Boqun (Jiangsu Fengdong)

—"Precision Controlled Atmosphere Heat Treatment and Its Emission Reduction Technology"

2. Zhang Zhichong (Jiangsu Fengdong)

—"Study on High Concentration Deep Vacuum Carburizing-Nitriding Thermal Treatment Process"

3. Su Yang (Jiangsu Fengdong)

—"Study on surface structure and properties of GCr15 Bearing treated by gas nitrocarburizing quenching"

4. Wang Songming (Ishikawajima Fengdong)

—"Vacuum Carburizing for Industrial Robot Parts--Vacuum Carburizing Treatment of Cycloid Gears for RV Reducers"

5. Okosuke Matsuda (Japan Takahiro)

—"Effect of microstructure and dislocation density on hardness and toughness in induction hardened medium carbon steel"

6. Yan Peiqing (Yantai Fengdong)

—"The Application of BBH - 6000 Furnace in the Deep Carburizing Process for the Wind Power Industry"

7. Li Dan (Qingdao Fengdong)

—"Application of low temperature gas nitrocarburising of 316L austenitic stainless steel in hydrogen energy equipment"

8. Xing Xue (Qingdao Fengdong)

—"Causes and Process Improvement of Low-Temperature Impact Work Fluctuation in 20CrMnMo Mud Pump Valve Seats"

9. You Yitian (Qingdao Heat Engineering)

—"Study on Measures to Improve Internal Oxidation during Carburizing and Quenching Process"

10. Xu Zhibin (Qingdao Heat Engineering)

—"High-End Application of Ion Nitriding Technology in Key Components of Hydrogen Energy Engines"

11. Zhang Dengpo (Weifang Fengdong)

—"Phenomenon of Mixed Crystals in Carburizing Layers and Improvement Methods"

12. Wang Haocun (Weifang Fengdong)

—"Research on a New High-Activity Nitrogen-Carbon Co-Infusion Process Based on Acetylene Cracking"

13. Song Jian (Weifang Fengdong)

—"Study on Carbon-Nitrogen Co-Infusion Process for 16Cr3NiWMoVNbE Gear Steel"