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多束流电子束焊是一种能够同时产生多个电子束流作为焊接热源的电子束焊接新技术,能够有效的减小焊接应力和变形。为了减小Ti6Al4V钛合金薄板焊接变形,提出了一种新型的多束流电子束焊接技术,除了熔化金属的主束流外,还包括2个对称分布的辅助束流用来焊后加热。分别用传统电子束焊和多束流电子束焊对1 mm厚的Ti6Al4V钛合金薄板进行焊接试验,试验表明,通过调节2个辅助束流的位置和能量分布,多束流电子束焊能够有效减小钛合金薄板的焊接变形。
Multi-beam electron beam welding is a new electron beam welding technology that can simultaneously generate multiple electron beam fluxes as the welding heat source, which can effectively reduce the welding stress and deformation. In order to reduce the welding deformation of Ti6Al4V titanium alloy sheet, a new multi-beam electron beam welding technology is proposed. In addition to the main beam of molten metal, two symmetrical auxiliary beam are included for post-welding heating. The welding experiments of 1 mm thick Ti6Al4V titanium alloy sheet by traditional electron beam welding and multi beam electron beam welding have been carried out. The experimental results show that multi beam electron beam welding can be effective by adjusting the position and energy distribution of the two auxiliary beams Reduce the welding of titanium alloy sheet deformation.