锻压技术

管坯镦锻工艺仿真及优化

英文标题：Simulation and optimization of the upset forging process of tube parts

作者：黄早文徐开东张志坤向和军邓小茹

单位：华中科技大学塑性成形模拟及模具技术国家重点实验室华中科技大学塑性成形模拟及模具技术国家重点实验室华中科技大学塑性成形模拟及模具技术国家重点实验室华中科技大学塑性成形模拟及模具技术国家重点实验室玉门石油管理局机械厂湖北武汉430074 湖北武汉430074 湖北武汉430074 湖北武汉430074 甘肃玉门735200

关键词：管坯镦锻有限元模拟工艺优化

分类号：TG316

出版年,卷(期):页码：2006,31(6):9-12

摘要：

管坯镦锻制品是石油、钻探等机械设备的关键部件,要求具有很高的强度、抗拉性能及抗疲劳性能。在实际生产中,管坯成形过程很容易产生失稳、内部凹陷甚至折叠,而且坯料体积不易控制,使得锻件成形困难,锻件质量得不到保证。本文采用Deform-3D塑性有限元分析软件,以钻杆头部镦锻为例对管料的镦锻成形工艺过程进行了模拟和分析,并针对原有成形工艺中出现的问题进行了改进和优化。运用Deform-3D系统模拟的油管与生产实际基本吻合,因此,该模拟结果及其参数可用于钻杆头部镦锻模的设计。

The tube forging is the important part of mechanical equipment,such as petroleum and drilling industries,so it is requested to have the high intensity,high anti-pull and anti-fatigue properties.During the upset forging of tube parts,it is easy to occur the instability and enfold.At the same time,the forging blank volume is hard to control,which makes the forming difficult and forging quality hard to control.In this paper,the upset forging tube part's forming process is simulated and analyzed by the Deform-3D software,meanwhile,the defects are predicted.Based on the simulating results,the original forming progress and the die structure are improved and optimized.The simulation results using the Deform-3D software have a good agreement with the experimental results.So the simulation results and its processing parameters have a good guide for designing the head upsetting die of the drill pipe.

基金项目：

参考文献：

[1]李振红.精锻产品精度预测技术的研究现状[J].锻压技术,2005,(3):1 3.
[2]张志文.锻造工艺学[M].北京:机械工业出版社,1990.
[3]俞彦勤,黄早文.空心抽油杆镦锻工艺的试验研究[J].模具工业,2000,(11):22 24.

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