大直径风塔法兰异型环锻件双件合轧工艺模拟与试验
Simulation and Test on Rolling Pairs of Large-diameter Wind-tower Flange with Special Sectional Rings
张毅峰1， 王雷刚1， 吴君三2， 胡振奇2
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作者单位：1.江苏大学 材料科学与工程学院, 江苏 镇江 212013; 2.张家港海陆环形锻件有限公司，江苏 张家港 215600
中文关键字：风塔法兰； 异型截面； 环锻件； 合轧
英文关键字： wind-tower flange; special section; ring forgings; rolling two rings together
中文摘要：针对大型风塔法兰异型截面环锻件轧制时出现不平稳，外表面径向拉缩等缺陷，提出了双件合轧的轧制工艺。在有限元模拟的基础上，确定了最佳的辗扩预成形毛坯形状，并得到生产验证。结果表明：双件合轧工艺比单件轧制工艺的过程更平稳，充型更完整，且节约近10%的原料，同时提高了生产效率。
英文摘要：Aiming at the defects of instability and radial shrinking-drawing of outer surface during rolling large-scale wind-tower flange with special sectional rings, the rolling process of a pair of rings together was proposed. On the base of FE simulation, the optimum shape of pre-rolling blank was determined. The results show that the rolling process of rolling two rings together is more smooth and the mould-filling is more complete than that of rolling single piece. In addition, 10% material is saved and production efficiency increases.