摘要
为研究ZGMn13Cr2钢的热变形行为及热加工图,首先利用Gleeble-3500热模拟试验机对其进行了高温压缩实验,研究ZGMn13Cr2钢在变形温度为900、1000、1100和1200℃,应变速率为0.01、0.1、1和10 s^(-1)条件下的真实应力-真实应变曲线,分析其在不同变形条件下流变应力的变化规律,并基于实验数据,经线性拟合得到ZGMn13Cr2钢的Arrhenius本构方程及热加工图;然后,以某型号挖掘机斗齿为研究对象,研究该材料的热加工性能,制定了挖掘机斗齿的锻造工艺并利用数值模拟软件进行模拟;最后,根据模拟得到的工艺参数进行了工艺实验验证。研究结果表明,ZGMn13Cr2钢的最优热加工工艺参数范围为:变形温度为1057~1167℃、应变速率为0.2~0.5 s^(-1)。工艺实验得到的斗齿锻件充填饱满,并与模拟结果基本一致。该研究结果为ZGMn13Cr2钢的锻造工艺参数制定以及挖掘机斗齿的实际锻造生产提供一定的理论依据。
To study the hot deformation behavior and hot processing map of ZGMn13Cr2 steel,the high-temperature compression experiments were conducted by hot simulation testing machine Gleeble-3500,and the true stress-true strain curves of ZGMn13Cr2 steel were obtained under the deformation temperatures of 900,1000,1100 and 1200 ℃,and the strain rates of 0.01,0.1,1 and 10 s^(-1).Then,the rheological stress change laws under different deformation conditions were analyzed,and based on the experimental data,the Arrhenius constitutive equation and the hot processing map of ZGMn13Cr2 steel were obtained by linear fitting.Furthermore,for a certain model of excavator bucket teeth,the hot processing properties of the material were studied,and the forging process of excavator bucket teeth was formulated and simulated by numerical simulation software.Finally,the process parameters obtained from the simulation were verified by process experiments.The research results indicate that the optimal hot processing parameters of ZGMn13Cr2 steel is the deformation temperature of 1057-1167 ℃,and the strain rate of 0.2-0.5 s^(-1).The forgings of bucket teeth obtained from the process test is fully filled,which is basically consistent with the simulation results.The research results provide a certain theoretical basis for the formulation of forging process parameters for ZGMn13Cr2 steel and the actual forging production of excavator bucket teeth.
作者
张培彦
Zhang Peiyan(School of Mechanical and Electrical Engineering,Zhengzhou Tourism College,Zhengzhou 451464,China)
出处
《锻压技术》
CAS
CSCD
北大核心
2024年第9期27-34,67,共9页
Forging & Stamping Technology
基金
河南省高等学校重点科研项目(24B430021)
河南省高等教育教学改革研究与实践项目(2024SJGLX0737)。
