High-frequency vacuum electromagnetic induction pulse carburizing and its application

doi:10.13251/j.issn.0254-6051.2020.03.049

Abstract

Abstract:

Aiming at the problems of slow heating rate and long process period of the conventional vacuum resistance heating carburizing equipment, a high-frequency electromagnetic induction vacuum pulse carburizing method was proposed, and an electromagnetic induction vacuum pulse carburizing equipment based on PLC control was independently developed. It has a fast heating rate, short process cycle, online monitoring of pressure and temperature, automatic mixing of different proportions of carburizing atmosphere and program control of the entire process of electromagnetic induction vacuum pulse carburizing. It can complete different “strong seepage-diffusion” time ratios and can change pressure and temperature respectively with time in the range of -80-0 kPa and 300-1300 ℃. By using the equipment, a pulse carburizing process with 8 different “strong seepage-diffusion” time ratios was carried out on 20CrMnTi steel, and a carburized layer containing Fe₃C, Fe and other carbide phases was prepared on the surface of the steel, the highest hardness and the thickness of the carbonized layer reach 835.2 HV0.025 and 1398 μm respectively, which are superior to that obtained by the conventional vacuum resistance carburizing method.

Key words: vacuum carburizing, electromagnetic induction, pulse, automated control

CLC Number:

TG155.92

Song Kangjie, Zhao Xunfeng, Feng Zhiguo, Liu Jing. High-frequency vacuum electromagnetic induction pulse carburizing and its application[J]. HTM, 2020, 45(3): 242-246.

References

[1]Dychtoń K, Rokicki P, Nowotnik A, et al. Process temperature effect on surface layer of vacuum carburized low-alloy steel gears[C]//Solid State Phenomena. Trans Tech Publications Ltd, 2015, 227: 425-428.
[2]任伟, 张天德, 吴国华, 等. 20CrMnTi钢真空低压渗碳工艺及组织性能研究[J]. 热加工工艺, 2015, 44(16): 187-190.
Ren Wei, Zhang Tiande, Wu Guohua, et al. Study on microstructure and properties of 20CrMnTi steel after vacuum carburizing[J]. Hot Working Technology, 2015, 44(16): 187-190.
[3]Li L J, Wang Y Y, Zhang A F, et al. Silicon refinement of TC4 grains by induction heating assisted laser cladding deposition[J]. Chinese Journal of Lasers, 2018, 45(6): 83-88.
[4]康承飞, 樊新民. 20CrMnTi钢液相感应渗碳[J]. 热处理, 2015, 30(4): 9-12.
Kang Chengfei, Fan Xinmin. Liquid induction carburizing of 20CrMnTi steel[J]. Heat Treatment, 2015, 30(4): 9-12.
[5]施建华, 孙宁, 王以琦. 感应加热内热式真空渗碳工艺研究[J]. 新技术新工艺, 2007(12): 69-70+3.
[6]颜志斌. 20CrMnTi钢真空碳氮复合渗工艺与渗碳层特性研究[D]. 贵阳: 贵州大学, 2018: 23-29.
[7]冯治国, 赵驯峰, 刘静. 电磁感应真空变脉冲工艺对20CrMnTi钢渗碳层组织与性能的影响[J]. 表面技术, 2018, 47(12): 76-82.
Feng Zhiguo, Zhao Xunfeng, Liu Jing. Effects of electromagnetic induction vacuum transform-pulse on carburizing structure and performance of 20CrMnTi steel[J]. Surface Technology, 2018, 47(12): 76-82.
[8]张海军, 王国彦, 张勇峰. 中频感应加热技术在组合式制动梁架制造中的应用[J]. 金属热处理, 2018, 43(7): 192-196.
Zhang Haijun, Wang Guoyan, Zhang Yongfeng. Application of medium frequency induction heating technology in manufacturing of combined type brake beam frame[J]. Heat Treatment of Metals, 2018, 43(7): 192-196.
[9]李坤茂, 颜志斌, 刘静, 等. 温度对20CrMnTi钢渗氮层组织及耐磨性的影响[J]. 材料热处理学报, 2018, 39(11): 80-86.
Li Kunmao, Yan Zhibin, Liu Jing, et al. Influence of temperature on microstructure and wear resistance of nitriding layer of 20CrMnTi steel[J]. Transactions of Materials and Heat Treatment, 2018, 39(11): 80-86.
[10]张道达, 尧登灿, 张海军. 不同的离子渗氮工艺对20CrMnTi 钢的渗氮层的影响[J]. 南昌大学学报(工科版), 2016, 38(1): 84-88, 92.
Zhang Daoda, Yao Dengcan, Zhang Haijun. Effect of different ion nitriding process on the nitriding layer of 20CrMnTi steel[J]. Journal of Nanchang University(Engineering and Technology), 2016, 38(1): 84-88, 92.
[11]郑盼, 商剑, 张越.稀土添加量对20CrMnTi钢表面碳铌复合渗层组织及性能的影响[J]. 表面技术, 2018, 47(7): 167-172.
Zheng Pan, Shang Jian, Zhang Yue. Effects of rare earth content on microstructure and properties of composite carbon-niobiumizing coatings prepared on 20CrMnTi steel[J]. Surface Technology, 2018, 47(7): 167-172.
[12]李振鹏, 颜志斌, 刘静, 等. 20CrMnTi钢碳氮复合强化层的组织与性能[J]. 真空科学与技术学报, 2018, 38(11): 949-954.
Li Zhenpeng, Yan Zhibin, Liu Jing, et al. N-infiltration of surfaces of pre-carburized 20CrMnTi steel in three nitriding techniques[J]. Chinese Journal of Vacuum Science and Technology, 2018, 38(11): 949-954.

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