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首页> 外文期刊>Journal of engineering materials and technology >An Experimental Approach toContinuous Dieless Wire Drawing(Variant A) Using ELI Ti 6A1-4VAlloy
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An Experimental Approach toContinuous Dieless Wire Drawing(Variant A) Using ELI Ti 6A1-4VAlloy

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This research paper describes a specifically constructed Variant. A continuous dielesswire-drawing machine to experimentally determine the principal processing parametersfor dieless wire drawing using extra low interstitial Ti-6Al-4V wire alloy. It was experi-mentally determined that the process was limited by the ratio of the ingoing and outgoingaxial velocities, also known as the reduction ratio R and influenced by the primarydrawing velocity V1. 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 anincrease in overall achievable reduction in CSA was observed. The separation distancebetween the wire heating and cooling devices (S) was identified as one of the principalgoverning process parameters. It was found that processing in an inert gas environmentled to an increased reduction on CSA of approximately 3 per pass when compared withprocessing in compressed air. This was attributed to a reduction in surface oxidation andstress cracking. The experimentally determined results showed excellent agreement witha proposed mathematical model. It was also determined that the calculated strain rate forthe process fell within the boundaries of previously determined strain rates for thisparticular alloy. The successful operation of this experimental machine effectively illus-trates the possible commercial validity of continuous dieless wire drawing.

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