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首页> 外文期刊>Journal of engineering materials and technology >An Experimental Approach to Continuous Dieless Wire Drawing (Variant A) Using ELI Ti-6AI-4V Alloy
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An Experimental Approach to Continuous Dieless Wire Drawing (Variant A) Using ELI Ti-6AI-4V Alloy

机译：使用ELI Ti-6AI-4V合金进行连续无模拉丝试验（变体A）的实验方法

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'This research paper describes a specifically constructed Variant A continuous dieless wire-drawing machine to experimentally determine the principal processing parameters for dieless wire drawing using extra low interstitial TI-6AI-4V wire alloy. It was experimentally determined that the process was limited by the ratio of the ingoing and outgoing axial velocities, also known as the reduction ratio R and influenced by the primary drawing velocity V_1. Reductions of up to 36% per pass wire in cross-sectional area (CSA) were achieved. However, a direct relationship between the wire diameter variation and an increase in overall achievable reduction in CSA was observed. The separation distance between the wire heating and cooling devices (S) was identified as one of the principal governing process parameters. It was found that processing in an inert gas environment led to an increased reduction on CSA of approximately 3% per pass when compared with processing in compressed air. This was attributed to a reduction in surface oxidation and stress cracking. The experimentally determined results showed excellent agreement with a proposed mathematical model. It was also determined that the calculated strain rate for the process fell within the boundaries of previously determined strain rates for this particular alloy. The successful operation of this experimental machine effectively illustrates the possible commercial validity of continuous dieless wire drawing.
机译：这篇研究论文描述了一种特殊构造的Variant A连续无模拉丝机，该实验使用超低间隙TI-6AI-4V线合金通过实验确定了无模拉丝的主要加工参数。实验确定，该过程受进，出轴向速度之比（也称为减速比R）的限制，并且受主拉伸速度V_1的影响。每条通过线的截面积（CSA）减少了多达36％。但是，观察到线径变化与CSA总体可实现的降低增加之间存在直接关系。焊丝加热和冷却装置（S）之间的分隔距离被确定为主要控制工艺参数之一。已经发现，与在压缩空气中进行处理相比，在惰性气体环境中进行处理可将每次通过的CSA降低量提高大约3％。这归因于表面氧化和应力开裂的减少。实验确定的结果表明与提出的数学模型非常吻合。还确定了该过程的计算出的应变率落入该特定合金先前确定的应变率的范围之内。该实验机的成功运行有效地说明了连续无模拉丝的商业可行性。

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