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鋼表面雙絲堆焊Fe-Al合金層工藝規范參數的優化

時間:2019-03-31 11:14來源:畢業論文
通過在鋼表面雙絲堆焊Fe-Al合金層的工藝試驗,采用一根鋼焊絲和一根鋁焊絲,通過調整鋼焊絲和鋁焊絲的送絲速度,控制鐵鋁的配比,來獲得Fe3Al合金層。焊接工藝試驗結果表明:當主

摘要本文通過在鋼表面雙絲堆焊Fe-Al合金層的工藝試驗,采用一根鋼焊絲和一根鋁焊絲,通過調整鋼焊絲和鋁焊絲的送絲速度,控制鐵鋁的配比,來獲得Fe3Al合金層。焊接工藝試驗結果表明:當主機M端采用Φ1.6mmER1100鋁焊絲,不添加脈沖,電弧電壓26.8V,焊接電流為160A;輔機S端采用Φ1.6 mmER50S-6鋼焊絲,添加脈沖,電弧電壓26.4V;焊接電流為310A,焊接速度為60cm/min,焊前的預熱溫度為300℃,可以得到成型好、無裂紋、夾雜、氣孔等缺陷的Fe-Al合金堆焊層。34034
堆焊層的力學性能測試結果顯示,顯微硬度在350-460HV。金相顯微組織分析顯示:堆焊層焊縫有顯著的柱狀晶成分組織,且其內部有析出相。經過XRD分析表明堆焊層中析出相為Fe3Al。
關鍵詞:  Fe-Al合金 雙絲堆焊 工藝參數 力學性能 顯微組織
畢業論文設計說明書外文摘要
Title    Optimization of the double-wire overlaying with steel as base metal Fe-Al alloy layer process parameters                                               
Abstract
In this thesis, Through the experiments of the double-wire overlaying with steel as base metal Fe-Al alloy layer,using one steel wire and one aluminum wire to get the Fe3Al alloy layer by adjusting the steel wire and aluminum wire feed speed and controling iron aluminum ratio WhenΦ1.6mm ER1100 aluminum wire is applied to the master engine with involving pulse, with voltage of 26.8V,current of 160A,whileΦ1.6mm ER50S-6 wire to the slave engine, with the voltage of 26.4,current of 310A, nvolving pulse,the welding speed and preheat temperature are expected to reach 60cm/min and 300℃ respectively,shaping the surfacing layer with execllent cracking resistance ,without inclusion and cracks involved.
源`自*六)維[論*文'網www.mmeqir.tw

Mechanical properties tests are conducted to the surfacing layer of iron and aluminum intermetallic and the experimental results show that: The microhardness of the surfacing layer is 350~460HV. Metallurgical microstructure analysis shows that weld seam interface is composed of the columnar grain structure. And there is a precipitated phase in the columnar grain structure. .The XRD analysis shows  that precipitated phase is Fe3Al in the surfacing Layer.
Keywords Fe-Al alloy double-wire welding technological parameters mechanical properties microstructure
目    錄
摘要    I
Abstract    II
1 緒論    1
1.1 選題的意義    1
1.2 金屬間化合物簡介    1
1.3 Fe-Al金屬間化合物的特點性能    2
1.4 Fe-Al合金層制備現狀    3
1.4.1 等離子弧熔覆技術    3
1.4.2 高速電弧噴涂技術    3
1.4.3 熱浸滲技術    3
1.5 雙絲電弧焊研究現狀    4
2 試驗的設備和材料    6
2.1 試驗的設備    6
2.1.1 法國SAF TANDEM R450 TOPMAG 自動雙絲焊接系統    6
2.1.2 力學性能檢測設備    8
2.1.3 其他設備    8
2.2 試驗材料    9
2.2.1 焊接母材及焊絲    9
3. 試驗方案設計及分析    11
3.1 焊接方案設計    11
3.1.1 焊前準備工作    12
3.1.2 主絲、輔絲焊絲的選擇    12 源`自*六)維[論*文'網www.mmeqir.tw
3.1.3 焊前的預熱及焊后的熱處理工藝    12
3.2 采用Φ1.6mm鋼焊絲、Φ1.6mm鋁焊絲雙絲焊堆焊試驗設計    12 鋼表面雙絲堆焊Fe-Al合金層工藝規范參數的優化:http://www.mmeqir.tw/cailiao/20190331/31500.html
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