TA1保温杯超薄板窄间距激光焊接工艺优化
Optimized Design of Laser Welding Process for Ultra-Thin TA1 Thermal Insulation Cup with Narrow Gaps
- 2025年55卷第5期 页码:63-68
收稿:2024-12-12,
修回:2025-01-13,
纸质出版:2025-05-20
DOI: 10.7512/j.issn.1001-2303.2025.05.08
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收稿:2024-12-12,
修回:2025-01-13,
纸质出版:2025-05-20
移动端阅览
为实现超薄、窄间距TA1保温杯板材的精密连接,设计搭建了一种基于旋转定位系统的激光焊接装置,并进行了焊接试验,分析激光焊接功率及焊接速度等工艺参数对焊接接头组织、显微硬度、力学性能的影响规律。研究发现,激光功率和旋转定位台转速对焊接质量有显著影响。当激光功率过低(600 W)或旋转定位台转速过快(11~13 r/min)时,焊接热输入低,熔池流动性差,导致组织分布不均且熔深浅;而激光功率过高(1 200~1 350 W)或转速过慢(3~5 r/min)时,热输入过高,接头变形大、热影响区宽且易产生气孔缺陷。通过对不同工艺参数下的焊接接头进行体式显微分析、金相观察和拉脱力测试,发现当激光功率为 1 050 W、旋转定位台转速为 7 r/min 时,接头成形良好,内胆和外壁对结构称,无气孔缺陷,且接头非标试样的平均拉脱力和最小拉脱力分别达到峰值 1 415 N、1343 N。试验结果证明,优化后的焊接工艺显著提升了纯钛焊接的精度和质量,可以为高纯钛保温杯的高效高品质制造提供理论依据和参考。
To achieve precise connections of ultra-thin
narrow-spaced TA1 thermal insulation cup plates
this study designed and built a laser welding device based on a rotary positioner system
and carried out welding experiments to analyze the effects of process parameters such as laser welding power and welding speed on the microstructure
microhardness
and mechanical properties of welded joints.
Results
2
indicate that laser power and rotary positioner speed significantly impact welding quality. At low laser power (600 W) or high rotary positioner speed (11~13 r/min)
low welding heat input reduces molten pool fluidity
causing uneven microstructure distribution and shallow penetration. Conversely
high laser power (1 200~1 350 W) or low rotary positioner speed (3~5 r/min) increases heat input
leading to significant joint deformation
a wide heat-affected zone
and porosity defects. Comprehensive analysis of welded joints under different parameters via stereoscopic microscopy
metallographic examination
and pull-off force tests reveals optimal parameters: a laser power of 1 050 W and a rotary positioner speed of 7 r/min. Under these conditions
the joint forms well
with symmetrical inner and outer wall structures
no porosity defects
and peak average and minimum pull-off forces of 1 415 N and 1 343 N
respectively. The optimized process significantly enhances the accuracy and quality of titanium welding
offering a theoretical basis and reference for the efficient
high-quality manufacturing of pure titanium thermal insulation cups.
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