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Study of effect of process parameters on titanium sheet metal bending using Nd: YAG laser

机译:Nd:YAG激光工艺参数对钛金属板弯曲的影响研究

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摘要

Laser Bending is a new non-contact technique of forming sheet-metal components. This method has been extended to bend Titanium components in industry. In Titanium laser bending process serious issues such as oxide film formation and subsequent deleterious changes in material properties are encountered. This paper investigates methods to minimize oxidation with minimal change in bending results for Grade-2 Titanium. Inert gas shielding is used as a means of reducing oxidation. Different gas flow conditions, nozzle positions and inert gas combinations are used to enhance the bend quality and bend angle. These process changes lead to final bending angle increase and decrease in width of Heat Affected Zone (HAZ), section thickness of sheet at HAZ and surface hardness. Also as Grade-2 Titanium is highly reflective, different coatings have been used to improve the absorption of laser beam which resulted in further increase in bending angle.
机译:激光弯曲是一种新的形成钣金零件的非接触技术。此方法已扩展为在工业中弯曲钛组件。在钛激光弯曲工艺中,会遇到严重的问题,例如氧化膜的形成和随后材料性能的有害变化。本文研究了在2级钛的弯曲结果变化最小的情况下使氧化最小化的方法。惰性气体屏蔽被用作减少氧化的手段。使用不同的气流条件,喷嘴位置和惰性气体组合来提高弯曲质量和弯曲角度。这些过程的变化导致最终弯曲角度的增加和热影响区(HAZ)宽度,HAZ处的薄板厚度以及表面硬度的减小。同样,由于2级钛具有高反射性,因此使用了不同的涂层来改善激光束的吸收,从而进一步增加了弯曲角度。

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