锻压技术

SDP1塑料模具钢锻造过程组织演变的数值模拟

英文标题：Numerical simulation of microstructure evolution for SDP1 plastic die steel during forging process

作者：王笑驰1 2 左鹏鹏1 2 3 吴晓春1 2 3

单位：1. 省部共建高品质特殊钢冶金与制备国家重点实验室 2. 上海大学 3. 上大鑫仑材料科技（上海）有限公司

分类号：TG316

出版年,卷(期):页码：2023,48(2):16-28

摘要：

为改善SDP1塑料模具钢锻造过程中的粗晶问题，利用Deform软件建立了SDP1塑料模具钢锻造过程中的组织演变模型，通过有限元模拟以及元胞自动机的方法研究了不同工艺参数以及两镦两拔工艺对锻造过程中组织演变的影响。结果表明：锻造温度为1100 ℃时，锻件内部晶粒细小均匀，动态再结晶和晶粒长大的影响达到平衡，平均晶粒尺寸保持在40~50 μm；随着压下量和压下速度的增加，晶粒细化显著，但过大易使锻件损坏；送给量为50%~60%时拔长效果最佳，满足拔长效率和晶粒尺寸的要求；经过两镦两拔处理后，锻件整体的平均晶粒尺寸为5~20 μm，说明两镦两拔工艺能够有效地细化晶粒尺寸。所得结果对于SDP1塑料模具钢的实际生产具有一定的指导意义。

In order to improve the coarse grain problem in the forging process of SDP1 plastic die steel, the microstructure evolution model of SDP1 plastic die steel during the forging process was established by software Deform, and the influences of different process parameters and two-time upsetting and two-time stretching process on the microstructure evolution during the forging process were researched by finite element simulation and cellular automata method. The results show that the grains are fine and uniform in forgings at the forging temperature of 1100 ℃, the effects of dynamic recrystallization and grain growth are balanced, and the average grain size is 40-50 μm. With the increasing of reduction amount and reduction velocity, the grain refinement is significant, but when they are too large, it is easy to damage the forgings. When the feed amount is 50%-60%, the best stretching effect is achieved, which meets the requirements of stretching efficiency and grain size. After the treatment of two-time upsetting and two-time stretching, the overall average grain size of forgings is 5-20 μm, which shows that two-time upsetting and two-time stretching process can refine the grain size effectively. Thus, the obtained results have certain guiding significance for the actual production of SDP1 plastic die steel.

基金项目：

国家重点研发计划项目（2016YFB0300400）

作者简介：王笑驰(1997-)，男，硕士研究生，E-mail：wxc410@163.com；通信作者：吴晓春(1961-)，男，博士,博士生导师，教授，E-mail：wuxiaochun@shu.edu.com

参考文献：

[1]Jiang B,Fang W,Chen R M,et al. Mechanical properties and microstructural characterization of medium carbon non-quenched and tempered steel: Microalloying behavior[J]. Materials Science and Engineering:A,2019,748: 180-188.

[2]Du Z L,Liu X G,Gui J T,et al. Influence of MnS inclusions on dynamic recrystallization and annealing twins formation during thermal deformation[J]. Journal of Materials Research and Technology,2022,16: 1371-1387.

[3]Wang H,Chen Y L. The effect of finish rolling temperature on the microstructure and properties of non-quenched and tempered Bainite steel[J]. Procedia Engineering,2017,207: 1839-1843.

[4]黄东英, 张磊,刘晓红.7075铝合金多向锻造过程的元胞自动机数值模拟[J].锻压技术,2021,46(12):13-19.

Huang D Y,Zhang L,Liu X H. Numerical simulation on cellular automata in multi-direction forging process of 7075 aluminum alloy[J]. Forging & Stamping Technology,2021,46(12):13-19.

[5]李心蕊. 从动螺旋锥齿轮精密锻造成形及其数值模拟研究[D]. 山东：山东大学,2021.

Li X R. Research and Simulation on Precision Forging of Driven Spiral Bevel Gears[D]. Shandong: Shandong University,2021.

[6]高彩茹, 潘欢,邱春林,等.塑料模具钢镦粗过程内部空洞缺陷的有限元模拟[J].钢铁研究学报,2019,31(6):547-552.

Gao C R,Pan H,Qiu C L,et al. FEM simulation of inner void defects in plastic die steel during upsetting process[J]. Journal of Iron and Steel Research,2019,31(6):547-552.

[7]张肖晓, 陈旋,李晓成,等.大截面SDP1塑料模具钢多向锻造过程中微观组织演变的数值研究[J].上海金属,2020,42(2):57-62.

Zhang X X,Chen X,Li X C,et al. Numerical study on microstructure evolution of large cross-section SDP1 plastic die steel during multi-directional forging[J]. Shanghai Metals,2020,42(2):57-62.

[8]李晓成. 大截面塑胶模具钢自由锻过程晶粒演变研究及数值模拟[D]. 上海：上海大学,2017.

Li X C. Grain Revolution Study and Numerical Simulation of a Large Section Plastic Mold Steel during Free forging[D]. Shanghai:Shanghai University,2017.

[9]党卫东. 塑料模具钢大模块热加工工艺研究[D]. 上海：上海大学,2010.

Dang W D. Hot Working Process for Plastic Mold Steel in Large Section[D]. Shanghai:Shanghai University,2010.

[10]马璟, 刘建生,贾祥.基于锻后热处理响应的SA508 Gr.3Cl.1钢锻造工艺容限研究[J].热加工工艺,2022，51(7):48-51.

Ma J,Liu J S,Jia X. Research of forging processing window for SA508 Gr.3Cl.1 steel based on response of heat treatment after forging[J]. Hot Working Technology,2022，51(7):48-51.

[11]贾红帅. 2.25Cr1Mo大锻件热加工工艺模拟研究[D].鞍山：辽宁科技大学,2019.

Jia H S. Simulation Study on Hot Working Process of 2.25Cr1Mo Large Forgings[D]. Anshan: University of Science and Technology Liaoning,2019.

[12]文新理. 大截面特钢锻材缺陷演变规律与组织均质化控制研究[D]. 北京：北京科技大学,2017.

Wen X L. Defect Evolution and Microstructure Homogenization Control of Large Section Special Steel Forging[D]. Beijing:University of Science and Technology Beijing,2017.

[13]于惠升. AZ80镁合金大高径比镦粗成形工艺研究[D].太原：中北大学,2021.

Yu H S. Research on Upsetting Process of AZ80 Magnesium Alloy with Large Ratio of Height to Diameter[D]. Taiyuan:North University of China,2021.

[14]马艳丰. Φ600 mm圆坯锻件的径向锻造工艺优化及微观组织模拟[D].秦皇岛：燕山大学,2017.

Ma Y F. Study of Process Optimization and Microstructure Evolution in Radial Forging Process of Φ600 mm Round Solid Billet[D]. Qinhuangdao:Yanshan University,2017.

[15]周杰. 12Cr2Ni4A钢的动态再结晶行为及数值模拟[D].哈尔滨：哈尔滨理工大学,2015.

Zhou J. Dynamic Recrystallization Behaviors and Numerical Simulation of 12Cr2Ni4A Steel[D]. Harbin:Harbin University of Science and Technology,2015.

[16]史宇麟, 宋玉冰,薛秋云.大锻件两次镦拔锻造的工艺优化[J].热加工工艺,2007，36(5):51-53.

Shi Y L,Song Y B,Xue Q Y. Optimizing on forging process of two-time upsetting and stretching for large forgings[J].Hot Working Technology,2007，36(5):51-53.

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