锻压技术

基于正交试验的12 t模铸锭的锻造工艺参数优化

英文标题：Optimization on forging process parameters for 12 t ingot based on orthogonal test

作者：马继庆安其胜任红娃

分类号：TG316.1+92

出版年,卷(期):页码：2020,45(11):20-24

摘要：

锻造过程中为了消除或改善钢锭内部的疏松、缩孔等冶金缺陷，提升锻造后锻件的质量，利用有限元模拟软件Deform-3D，建立了12 t模铸锭在不同料宽比、搭边量和压下率条件下的有限元模型，并利用正交试验系统分析了影响锻件芯部空穴闭合的3种锻造因素之间的关系；研究了锻造过程中料宽比、搭边量和压下率对静水应力、等效应变的影响规律，并得出了优化的锻造工艺参数，可提升锻件的锻造质量。结果表明，料宽比在1.0~1.4范围时，料宽比的增大对等效应变的影响不大；搭边量大于80 mm时，搭边量的增大对静水应力的影响较小；压下率在25%~30%范围时，等效应变随着压下率的增大而增大，当压下率超过30%后，等效应变急剧下降。

In the forging process, in order to eliminate or improve the defects of loose and shrinkage in the ingot and improve the quality of forgings, the finite element model of 12 t ingot was established under the conditions of different ratios of length to width for material, contact boundary amounts and reduction ratios by finite element simulation software Deform-3D, and the relationships between the three forging factors that affected the closure of forging core cavity were analyzed by the orthogonal test. Then, the influence laws of the ratio of length to width for material, the contact boundary amount and the reduction ratio on the hydrostatic stress and the equivalent strain in the forging process were studied, and the optimized forging process parameters were put forward to improve the forging quality. The results show that when the ratio of length to width for material is 1.0-1.4, the increase of the ratio of length to width for material has little effect on the equivalent strain, when the contact boundary amount is larger than 80 mm, the increase of contact boundary amount has little effect on the hydrostatic stress, when the reduction ratio is 25%-30%, the equivalent strain increases with the increasing of reduction ratio, and when the reduction ratio exceeds 30%, the equivalent strain decreases sharply.

基金项目：

马继庆（1973-），男，学士，工程师 E-mail：1084362350@qq.com

参考文献：

[1]刘助柏,王连东,刘国辉, 等.大型锻件锻造工艺理论与技术的进展[J]. 大型铸锻件, 1998，(2):8-13.

Liu Z B, Wang L D, Liu G H, et al. Development of forging process theory and technology for heavy forgings[J]. Heavy Casting and Forging, 1998，(2):8-13.

[2]刘助柏,张永君,刘国辉,等.水平V型锥面砧锻造新工艺[P].中国：CN97101491.4，1998-10-14.

Liu Z B, Zhang Y J, Liu G H, et al. New forging process of horizontal V-shaped cone anvil[P]:China: CN97101491.4, 1998-10-14.

[3]陈颖,任运来,聂绍珉.凹面砧方坯拔长研究[J].大型铸锻件,2001,(3):22-25.

Chen Y, Ren Y L, Nie S M. Study on elongation of square billet with concave anvil [J]. Heavy Casting and Forging, 2001, (3): 22-25.

[4]马健,郭学锋,杨文朋, 等.基于DEFORM-3D对AZ31镁合金往复挤压变形均匀性有限元分析[J].塑性工程学报,2019,26(3):17-24.

Ma J, Guo X F, Yang W P, et al. Finite element analysis on deformation uniformity of AZ31 magnesium alloy by reciprocating extrusion based on DEFORM-3D[J]. Journal of Plastic Engineering, 2019, 26(3) : 17-24.

[5]云红,申常江,雷小荣. 40CrNi2MoA钢大锻件的调质热处理[J].金属热处理, 2004,29(12):68-70.

Yun H, Shen C J, Lei X R. Quenching and tempering heat treatment of 40CrNi2MoA steel heavy forgings[J]. Heat Treatment of Metals, 2004,29(12): 68-70.

[6]熊逸博,周杰,何雄, 等.基于数值模拟的机匣锻模堆焊再制造分析[J].热加工工艺,2017,46(9):157-159,163.

Xiong Y B, Zhou J, He X, et al. Analysis of surfacing remanufacturing of casing forging die based on numerical simulation[J]. Hot Working Technology, 2017,46(9): 157-159,163.

[7]王洪福,王华昌,汤育玺.热锻模非稳态温度场到稳态温度场的转变过程与特征[J].机械制造,2008,46(7):28-31.

Wang H F, Wang H C, Tang Y X. Transformation process and characteristics from unsteady temperature field to steady temperature field of hot forging die [J]. Machinery, 2008,46(7): 28-31.

[8]葛玮,徐卫红,邹珺.基于DEFORM-3D的铝合金锻造成形过程的计算机优化研究[J].热加工工艺,2014,43(23):128-131.

Ge W, Xu W H, Zou J. Study on computer optimization of forging forming process of aluminum alloy based on DEFORM-3D[J]. Hot Working Technology, 2014,43(23):128-131.

[9]牛瑞霞,詹俊勇,仲太生.基于SolidWorks偏置曲柄滑块机构运动仿真分析[J].锻压装备与制造技术,2016,51(5):19-21.

Niu R X, Zhan J Y, Zhong T S. Motion simulation analysis of offset crank slider mechanism based on SolidWorks [J]. Forging Equipment and Manufacturing Technology, 2016,51(5): 19-21.

[10]李彦奎,吕彦明,倪明明.基于正交试验的航空叶片精锻模具磨损分析[J].工程设计学报,2017,24(6):632-637.

Li Y K, Lyu Y M, Ni M M. Wear analysis of precision forging die for aviation blade based on orthogonal test[J]. Journal of Engineering Design, 2017, 24(6): 632-637.

[11]张京,吴淑芳,茹凤莲, 等.基于正交试验的梭床冷挤压过程数值模拟分析[J].机械工程与自动化,2019, (3):75-77.

Zhang J, Wu S F, Ru F L, et al. Numerical simulation analysis of shuttle bed cold extrusion process based on orthogonal experiment[J]. Mechanical Engineering Automation, 2019, (3):75-77.

[12]于锁清,赵娟, 倪利勇. 模锻参数对铝基复合材料汽车连杆耐磨性能的影响[J].锻压技术，2018,43(2):162-165.

Yu S Q，Zhao J，Ni L Y. Influence of extrusion forming temperature on microstructures and properties of tin bronze [J].Forging & Stamping Technology，2018,43(2): 162-165.

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