Two-dimensional rigid-plastic finite element method (FEM) was used for simulation of the effect of process parameterson the static recrystallization of 60SiMnA spring steel using MARC/AutoForge 3.1 software. A thermo-...Two-dimensional rigid-plastic finite element method (FEM) was used for simulation of the effect of process parameterson the static recrystallization of 60SiMnA spring steel using MARC/AutoForge 3.1 software. A thermo-mechanicalcoupled analysis was conducted considering the heat transfer between the workpiece, the roll and the environment,and the heat generation due to plastic work. The static recrystallization laws under different processing conditionsand the predicted distribution of the static recrystallization volume fraction on the deformation cross section arepresented.展开更多
The 3-D thermo-mechanical coupled elasto-plastic finite element method (FEM)was used for the simulation of the two-pass continuous hot rolling process of 60SiMnA spring steelbars and rods using MARC/AutoForge3.1 softw...The 3-D thermo-mechanical coupled elasto-plastic finite element method (FEM)was used for the simulation of the two-pass continuous hot rolling process of 60SiMnA spring steelbars and rods using MARC/AutoForge3.1 software. The simulated results visualize the metal flow andthe dynamic evolutions of the strain, stress and temperature during the continuous hot rolling,especially inside the work-piece. It is shown that the non-uniform distributions of the strain,stress and temperature on the longitudinal and transverse sections are a distinct characteristic ofthe continuous hot rolling, which can be used as basic data for improving the tool design,predicting and controlling the micro-structural evolution of a bar and rod.展开更多
φ11.8mm冷拔60Si2MnA弹簧钢(/%:0.58C,1.77Si,0.79Mn,0.15Cr,0.015P,0.005S)的生产流程为80 t LD-LF-VD-热轧至中12 mm盘条-冷拔工艺。对卷簧时断裂弹簧进行金相、力学、组织分析表明,热轧材表面质量和冷拔后弹簧钢的力学性能良好,钢...φ11.8mm冷拔60Si2MnA弹簧钢(/%:0.58C,1.77Si,0.79Mn,0.15Cr,0.015P,0.005S)的生产流程为80 t LD-LF-VD-热轧至中12 mm盘条-冷拔工艺。对卷簧时断裂弹簧进行金相、力学、组织分析表明,热轧材表面质量和冷拔后弹簧钢的力学性能良好,钢中存在20μm以上大颗粒非金属夹杂和冷拉过程产生的表面划痕是卷簧时弹簧断裂的诱因;控制钢中大颗粒夹杂物产生和改善冷拔润滑避免拔制过程产生深的划痕,可防止断裂发生。展开更多
文摘Two-dimensional rigid-plastic finite element method (FEM) was used for simulation of the effect of process parameterson the static recrystallization of 60SiMnA spring steel using MARC/AutoForge 3.1 software. A thermo-mechanicalcoupled analysis was conducted considering the heat transfer between the workpiece, the roll and the environment,and the heat generation due to plastic work. The static recrystallization laws under different processing conditionsand the predicted distribution of the static recrystallization volume fraction on the deformation cross section arepresented.
文摘The 3-D thermo-mechanical coupled elasto-plastic finite element method (FEM)was used for the simulation of the two-pass continuous hot rolling process of 60SiMnA spring steelbars and rods using MARC/AutoForge3.1 software. The simulated results visualize the metal flow andthe dynamic evolutions of the strain, stress and temperature during the continuous hot rolling,especially inside the work-piece. It is shown that the non-uniform distributions of the strain,stress and temperature on the longitudinal and transverse sections are a distinct characteristic ofthe continuous hot rolling, which can be used as basic data for improving the tool design,predicting and controlling the micro-structural evolution of a bar and rod.
文摘φ11.8mm冷拔60Si2MnA弹簧钢(/%:0.58C,1.77Si,0.79Mn,0.15Cr,0.015P,0.005S)的生产流程为80 t LD-LF-VD-热轧至中12 mm盘条-冷拔工艺。对卷簧时断裂弹簧进行金相、力学、组织分析表明,热轧材表面质量和冷拔后弹簧钢的力学性能良好,钢中存在20μm以上大颗粒非金属夹杂和冷拉过程产生的表面划痕是卷簧时弹簧断裂的诱因;控制钢中大颗粒夹杂物产生和改善冷拔润滑避免拔制过程产生深的划痕,可防止断裂发生。
