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基板散热作用对电弧堆焊成形中熔宽调控的影响

柏久阳, 范成磊, 林三宝, 杨春利

柏久阳, 范成磊, 林三宝, 杨春利. 基板散热作用对电弧堆焊成形中熔宽调控的影响[J]. 焊接学报, 2016, 37(3): 115-119.
引用本文: 柏久阳, 范成磊, 林三宝, 杨春利. 基板散热作用对电弧堆焊成形中熔宽调控的影响[J]. 焊接学报, 2016, 37(3): 115-119.
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BAI Jiuyang, FAN Chenglei, LIN Sanbao, YANG Chunli. Effects of base-plate's heat sink on the control strategies of weld width during GTA-additive manufacturing[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(3): 115-119.
Citation: BAI Jiuyang, FAN Chenglei, LIN Sanbao, YANG Chunli. Effects of base-plate's heat sink on the control strategies of weld width during GTA-additive manufacturing[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(3): 115-119.
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基板散热作用对电弧堆焊成形中熔宽调控的影响

  • 哈尔滨工业大学先进焊接与连接国家重点实验室, 哈尔滨 150001

Effects of base-plate's heat sink on the control strategies of weld width during GTA-additive manufacturing

  • Harbin Institute of Technology, State key laboratory of advanced welding and connecting, Harbin 150001, China

摘要

    摘要
  • 摘要: 文中首先进行单道多层堆焊试验,得到不同厚度基板条件下的20层薄壁堆焊结构,发现薄壁结构都能在距基板7.30 mm高度以内进入熔宽稳定区域,且稳定后熔宽与基板厚度无关.结果表明,基板散热在不同高度的作用效果的不同是造成基板附近焊道熔宽产生变化的主要因素.采用三种策略对基板附近焊道熔宽进行调控并对结果进行方差分析,最佳调控策略可以使各基板条件下的方差都控制在0.24以内,其中6 mm板厚下可控制在0.02以内.根据参数调控曲线可知,基板对不同高度焊道熔宽的作用效果呈凹型曲线分布,且曲率随基板厚度的增加而增加.
    Abstract: Several thin-walled parts made by 20 overlayers were produced on base plates with different thicknesses. Results show that all the width of the overlaying weld canbe stable of 7.30 mm. Moreover, the stable weld width is not affected by the thickness of the base-plate. It is suggested that the various height from the weld to the base-plate heat sink ultimately contribute to the unstable-width varying weld near the base-plate. To adjust the weld width to anunstable-width zone, three kinds of control strategies were conducted. By using the optimized control strategy, the variance can be limited in 0.24. According to the parameters control curve, the heat sink effects exhibit a concave distribution along the height direction. Moreover, the radius of curvature increases with the increase of the thickness of base-plate.
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  • 收稿日期:  2015-01-22

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