Displacement boundary conditions in heat treatment simulation analysis of 17CrNiMo6 steel helical gear

doi:10.13251/j.issn.0254-6051.2021.12.044

Abstract

Abstract: Based on the mathematical models of heat transfer, structure field transformation and thermo-elastoplasticity in 17CrNiMo6 steel heat treatment process, a finite element model of the helical gear heat treatment was established. The heat treatment process of the 17CrNiMo6 steel helical gear was simulated, and the influence of the three displacement boundary conditions (fixed constraint, symmetric constraint and friction constraint) on the distortion of heat treatment simulation was analyzed. The results show that the surface on the 17CrNiMo6 steel helical gear is subjected to compressive stress after quenching, but the core is subjected to tensile stress, and the compressive stress at the root of the tooth is greater than that at the top of the tooth. Compared with the commonly used boundary conditions of fixed or symmetrical constraints, the simulation results of friction constraints are more in line with the actual results.

Key words: 17CrNiMo6 steel, helical gear, heat treatment, distortion, boundary condition

CLC Number:

TG156

Liang Ruijun, Wang Zhiqiang, Li Huawen. Displacement boundary conditions in heat treatment simulation analysis of 17CrNiMo6 steel helical gear[J]. Heat Treatment of Metals, 2021, 46(12): 262-267.

References

[1]王陆军, 郭沿. 齿轮渗碳淬火热处理变形理论分析研究现状[J]. 热处理技术与装备, 2020, 41(3): 68-73.
Wang Lujun, Guo Yan. The Research state of heat treatment deformation theories of gear carburizing and quenching[J]. Heat Treatment Technology and Equipment, 2020, 41(3): 68-73.
[2]Liu Y, Qin S, Hao Q, et al. Finite element simulation and experimental verification of internal stress of quenched AISI 4140 cylinders[J]. Metallurgical and Materials Transactions A, 2017, 48(3): 1402-1413.
[3]Gao J, Gao Y, Xu Q, et al. Simulation on flow, heat transfer and stress characteristics of large-diameter thick-walled gas cylinders in quenching process under different water spray volumes[J]. Journal of Central South University, 2019, 26(11): 3188-3199.
[4]Li Z X, Zhan M, Fan X G, et al. Multi-mode distortion behavior of aluminum alloy thin sheets in immersion quenching[J]. Journal of Materials Processing Technology, 2020, 279: 116576.
[5]Chen X, Zhang S, Rolfe B, et al. The FEM simulation and experiment of quenching distortion of a U-shape sample and the sensitivity analysis of material properties[J]. Materials Research Express, 2019, 6(11): 116539.
[6]王鑫, 李宝奎, 顾敏. 基于热和相变应变模型的齿轮合金钢渗碳淬火畸变分析[J]. 表面技术, 2019, 48(3): 118-125.
Wang Xin, Li Baokui, Gu Min. Carburizing-quenching distortion analysis on gear alloy steel based on thermal and phase transformation strain model[J]. Surface Technology, 2019, 48(3): 118-125.
[7]吴凯, 唐进元, 孙思源, 等. 20CrMoH与8620H材料的齿轮热处理变形分析[J]. 机械传动, 2019, 43(2): 89-93.
Wu Kai, Tang Jinyuan, Sun Siyuan, et al. Analysis of gear heat treatment deformation of 20CrMoH and 8620H materials[J]. Journal of Mechanical Transmission, 2019, 43(2): 89-93.
[8]王鑫, 李宝奎, 顾敏, 等. 基于有限元分析的大型渗碳齿轮轴畸变控制[J]. 金属热处理, 2019, 44(4): 239-242.
Wang Xin, Li Baokui, Gu Min, et al. Distortion control of large carburized gear shaft based on finite element analysis[J]. Heat Treatment of Metals, 2019, 44(4): 239-242.
[9]Eser A, Broeckmann C, Simsir C. Multiscale modeling of tempering of AISI H13 hot-work tool steel-Part 2: Coupling predicted mechanical properties with FEM simulations[J]. Computational Materials Science, 2016, 113: 292-300.
[10]Esfahani A K, Babaei M, Sarrami-Foroushani S. A numerical model coupling phase transformation to predict microstructure evolution and residual stress during quenching of 1045 steel[J]. Mathematics and Computers in Simulation, 2021, 179: 1-22.
[11]王鑫. 高速机车齿轮渗碳淬火工艺及其畸变的数值模拟研究[D]. 北京: 机械科学研究总院, 2019.
[12]侯兴隆. 锥齿轮淬火变形控制的数值模拟研究[D]. 哈尔滨: 哈尔滨工程大学, 2018.
[13]丁立勇. 强约束条件下伞齿轮淬火工艺仿真及其变形控制[D]. 哈尔滨: 哈尔滨工业大学, 2012.
[14]黄群超. 风电齿轮渗碳淬火变形研究[D]. 南京: 南京航空航天大学, 2014.
[15]张小娟, 张建, 倪林彧, 等. 大长径比薄壁壳体零件真空气淬畸变行为的数值模拟[J]. 金属热处理, 2020, 45(7): 231-237.
Zhang Xiaojuan, Zhang Jian, Ni Linyu, et al. Numerical simulation on distortion behavior of large diameter ratio thin-walled shell during high pressure gas quenching[J]. Heat Treatment of Metals, 2020, 45(7): 231-237.
[16]刘庄, 吴肇基, 吴景之, 等. 热处理过程的数值模拟[M]. 北京: 科学出版社, 1996.
[17]Avrami M. Kinetics of phase change. Ⅱ transformation-time relations for random distribution of nuclei[J]. The Journal of Chemical Physics, 1940, 8(2): 212-224.