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CMT工藝對Al-Cu合金電弧增材制造氣孔的影響
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中央高?；究蒲袠I(yè)務費專項資金資助項目（YWF-13-ZY-34）


Influence of CMT Process on Porosity of Wire Arc Additive Manufactured Al-Cu Alloy
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    摘要:

    分析不同純氬保護氣體流量和冷金屬過渡(CMT)工藝方法對Al-Cu合金電弧填絲增材制造(WAAM)氣孔的影響規(guī)律。結果表明：純氬保護氣體流量和CMT工藝方法對Al-Cu合金WAAM制造過程的氣孔特征均具有重要影響。提高純氬保護氣體流量有助于減少氣孔；CMT-PADV工藝因其熱輸入低及電弧對Al-Cu合金填充絲端部表面氧化膜的高效清理而有利于減少甚至消除氣孔，提高純氬保護氣體流量至25 L/min時可消除氣孔。

    Abstract:

    Porosity characteristics of wire arc additive manufactured (WAAM) Al-Cu alloy using different pure argon flow rates and CMT process were investigated. It is observed that the porosity of aluminium alloy deposition can be significantly influenced by pure argon flow rate and CMT process. It is beneficial to reduce the porosity with the increase of pure argon flow rate. CMT-PADV is the most applicable process for aluminium alloy WAAM process. The porosity reduction using CMT-PADV process is due to its low heat input and effective oxide cleanliness of aluminium alloy filler wire. With a proper shielding flow rate of 25 L/min, CMT-PADV process can produce aluminium alloy demonstration with no porosity.

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從保強,丁佳洛. CMT工藝對Al-Cu合金電弧增材制造氣孔的影響[J].稀有金屬材料與工程,2014,43(12):3149~3153.[Cong Baoqiang, Ding Jialuo. Influence of CMT Process on Porosity of Wire Arc Additive Manufactured Al-Cu Alloy[J]. Rare Metal Materials and Engineering,2014,43(12):3149~3153.]
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  • 收稿日期:2013-12-17
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  • 在線發(fā)布日期: 2015-04-16
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