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首页> 外文期刊>Arabian Journal for Science and Engineering >The Influences of the Die Half Angle of Taper Die During Cold Extrusion Process
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The Influences of the Die Half Angle of Taper Die During Cold Extrusion Process

机译：锥度模头半角在冷挤压过程中的影响

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摘要

In this work, the effective strain distributions of billet extruded with taper dies which have different die half angle were investigated. The extrusion ratio for all experiments was set as two. The experimental works were done using cold-work plane strain extrusion apparatus. The experiments were done at room temperature around 28-32 ℃. Three types of taper die with three different die half angles, which are 0°, 30°, and 60° were prepared. Paraffinic mineral oil with low viscosity was used as test lubricant. The material of billet was annealed with pure A1100 aluminium. The experimental results were focused on the extrusion load, tool and workpiece surface roughness, and plastic deformation of billet. The velocity and the effective strain of billet were calculated using a visioplasticity method. From the results, we found that the die shape helps to reduce the forming load, which could contribute in minimizing the energy.
机译：在这项工作中，研究了具有不同模具半角的锥形模具挤压的坯料的有效应变分布。将所有实验的挤出比设定为2。实验工作是使用冷作平面应变挤压设备完成的。实验在室温约28-32℃下进行。制备具有三种不同的模具半角（分别为0°，30°和60°）的三种锥度模具。低粘度的石蜡矿物油用作测试润滑剂。坯料用纯A1100铝退火。实验结果集中在挤压载荷，工具和工件表面粗糙度以及坯料的塑性变形上。使用粘塑性法计算坯料的速度和有效应变。从结果中，我们发现模具形状有助于减少成形载荷，这可能有助于最大程度地减少能量。

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