锻压技术

基于Dynaform的B柱加强件热冲压全流程仿真及优化

英文标题：Simulation and optimization on B-pillar reinforcing parts during hot stamping process based on Dynaform

作者：刘雪飞黄馨阅向相王梦寒

关键词：热冲压 B柱马氏体正交试验 Dynaform

分类号：TG306

出版年,卷(期):页码：2019,44(6):46-52

摘要：

为研究不同工艺参数对超高强钢热冲压零件成形质量的影响规律，以B柱加强件为研究对象，基于Dynaform进行热成形及保压淬火全流程数值模拟。通过正交试验分析了坯料初始温度、模具初始温度、压边力和保压时间对热冲压产品的厚度均匀度、马氏体平均转化率和马氏体分布均匀性的影响规律，并且确定了最优工艺参数组合：坯料初始温度为750 ℃、模具初始温度为30 ℃、压边力为5000 N、保压时间为15 s。通过仿真验证，结果表明：建立的质量评价标准可以有效保证产品的性能。最优工艺参数组合下零件的质量评价标准分别为：厚度均匀度为0.0491、马氏体平均转化率为99.92%、马氏体分布均匀性为0.0024。

In order to study the influences of different process parameters on the forming quality of hot stamping parts for ultra-high strength steel, for B-pillar reinforcing parts, the numerical simulation during the whole process of hot forming, pressure holding and quenching was conducted by Dynaform. Then, the influences of initial blank temperature, initial die temperature, blank holder force and holding time on thickness uniformity, martensite average transformation rate and martensite distribution uniformity of hot stamping parts were analyzed by the orthogonal experiment, and the optimal combination of process parameter was determined with the initial blank temperature of 750 ℃, the initial die temperature of 30 ℃, the blank holder force of 5000 N and the holding time of 15 s. Through simulation verification, the results show that the established quality evaluation standard can effectively guarantee the performance of the product with the optimal combination of process parameters of the thickness uniformity of 0.0491, martensite average transformation rate of 99.92% and the martensite distribution uniformity of 0.0024.

基金项目：

工信部强基工程项目（TC160A310-20）

刘雪飞(1986-)，男，硕士，高级工程师 E-mail：lxffesto@163.com 通讯作者：王梦寒(1975-)，女，博士，副教授 E-mail：wmh9792@163.com

参考文献：

［1］徐伟力，管曙荣，艾键，等.钢板热冲压新技术介绍
［J］.塑性工程学报, 2009, 16(4):39-43.

Xu W L, Guan S R, Ai J, et al. Introduction of sheet metal hot-forming
［J］. Journal of Plasticity Engineering, 2009, 16(4):39-43.

［2］Karbasian H, Tekkaya A E. A review on hot stamping
［J］. Journal of Materials Processing Technology, 2010, 210(15):2103-2118.

［3］王彦丽. 基于多目标参数优化的超高强度硼钢板热成形性能研究
［D］. 重庆: 重庆大学, 2014.

Wang Y L, Study on Hot Forming Properties of Ultra High Strength Boron Steel based on Multi-objective Parameters Optimization
［D］. Chongqing: Chongqing University,2014.

［4］范国文. 超高强度硼钢热冲压关键影响因素数值分析
［D］.长春：吉林大学, 2013.

Fan G W. Key Factors Numerical Analysis of Ultra-high Strength Boron Steel Hot Stamping
［D］. Changchun: Jilin University, 2013.

［5］罗魁. B柱加强板热冲压成形仿真研究
［D］. 秦皇岛：燕山大学, 2017.

Luo K. Simulation Study on Hot Stamping of B-pillar Reinforced Plate
［D］.Qinhuangdao: Yanshan University, 2017.

［6］解欢, 曾威. 基于Kriging模型的超高强度钢板热冲压工艺参数优化
［J］. 锻压技术, 2017，42(3):57-63.

Xie H, Zeng W. Optimization on hot stamping process parameters of ultra high strength steel based on Kriging model
［J］. Forging & Stamping Technology, 2017，42(3):57-63.

［7］邢忠文, 包军, 杨玉英,等. 可淬火硼钢板热冲压成形实验研究
［J］. 材料科学与工艺, 2008, 16(2):172-175.

Xing Z W, Bao J, Yang Y Y, et al. Hot stamping processing experiments of quenchable boron steel
［J］. Materials Science & Technology, 2008, 16(2):172-175.

［8］郭淑锋. 轿车B柱加强板热冲压成形工艺参数优化研究
［D］. 秦皇岛：燕山大学, 2016.

Guo S F. Optimization on Hot Stamping Parameters of B-pillar Reinforced Panel
［D］. Qinhuangdao: Yanshan University, 2016.

［9］Maeno T, Mori K I, Nagai T. Improvement in formability by control of temperature in hot stamping of ultra-high strength steel parts
［J］. CIRP Annals-Manufacturing Technology, 2014, 63(1): 301-304.

［10］Bardelcik A, Worswick M J, Wells M A. The influence of martensite, bainite and ferrite on the as-quenched constitutive response of simultaneously quenched and deformed boron steel-experiments and model
［J］. Materials & Design, 2014, 55(6):509-525.

［11］Olsson T. An LS-DYNA material model for simulations of hot stamping processes of ultra high strength steel
［A］. 7th European LS-DYNA Conference
［C］. Salzburg: DYNAmore GmbH, 2009.

［12］Herrera F, Lozano M, Verdegay J L. Tackling real-coded genetic algorithms: Operators and tools for behavioural analysis
［J］. Artificial Intelligence Review, 1998, 12(4):265-319.

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