| 活性剂对低功率脉冲激光焊接不锈钢的影响 |
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| 引用本文： | 樊艳峰,刘金合,罗晓娜,徐韦锋.活性剂对低功率脉冲激光焊接不锈钢的影响[J].热加工工艺,2008,37(23). |
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| 作者姓名： | 樊艳峰 刘金合 罗晓娜 徐韦锋 |
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| 作者单位： | 西北工业大学材料学院,陕西西安,710072 |
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| 基金项目： | 国家自然科学基金资助项目
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| 摘 要： | 分别以TiO2、Cr2O3、B2O3、SiO2、CaF2为试验用活性剂.研究了它们对不锈钢1Cr18Ni9Ti低功率脉冲激光焊接的影响.结果表明,这些活性剂都能不同程度地增加焊缝熔深,其中B2O3和Cr2O3分别使熔深增加46%和31.7%,同时这两种活性剂还可以改善焊缝表面成形.在活性剂作用下,焊缝显微组织仍由柱状晶和等轴晶组成,但是这两种晶粒的区域会发生变化.活性剂增加焊缝熔深的机理不止一种,但都归结于增加了工件对激光的吸收率.
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| 关 键 词： | 低功率脉冲激光活性焊 不锈钢 熔深 |
Effects of Activating Fluxes on Low-power Pulse Laser Welding of Stainless Steel |
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| FAN Yanfeng,LIU Jinhe,LUO Xiaona,XU Weifeng.Effects of Activating Fluxes on Low-power Pulse Laser Welding of Stainless Steel[J].Hot Working Technology,2008,37(23). |
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| Authors: | FAN Yanfeng LIU Jinhe LUO Xiaona XU Weifeng |
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| Affiliation: | FAN Yanfeng,LIU Jinhe,LUO Xiaona,XU Weifeng(School of Materials Science , Engineering,Northwestern Polytechnical University,Xi\'an 710071,China) |
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| Abstract: | Five kinds of activating fluxes(TiO2, Cr2O3, B2O3, SiO2, CaF2) were used to study their effects on low-power pulse laser welding of stainless steel.The results show that all activating fluxes can deepen the penetration, thereinto, B2O3 and Cr2O3 can deepen the penetration by 46% and 31.7%, respectively, and also improve the surface formation.The activating fluxes increase the absorption ratio of laser power.Under the activating fluxes, the microstructure still consists of equiaxed crystals and columnar crys... |
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| Keywords: | low power pulse laser welding with activating fluxes stainless steel welding penetration |
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