This paper gives a discussion on relation between shape,size and quality of welding seam ,and introduces the effect on liquidity of metal in molten bath and shape of molten bath from welding stress and the effect on size of welding seam from welding parameter and its technological factors.

論述了焊縫的形狀尺寸與焊縫質(zhì)量的關(guān)系，介紹了焊接中力對熔池金屬的流動(dòng)及熔池形狀的影響天天夜夜人人爽人人爽、焊接參數(shù)和工藝因素對焊縫尺寸的影響欧美激情精品视频一区二区，對焊縫缺陷產(chǎn)生的原因進(jìn)行了分析并提出了預(yù)防措施。

Experience shows that the introduced magnetic field can give an effective intervention to the transition of droplet, flowing of molten bath metal, crystalline and nucleation of molten bath and the process of crystalline growth. The magnetic field promotes the refining degree of primary crystallization structure , decreases the chemistry non-homogeneity, So it can strengthen hardness and wearing resistance of weld metal overlay and improve quality of surfacing deposit.

實(shí)踐表明欧美疯狂操逼，利用外加磁場對焊接中熔滴的過渡亚洲VS天堂、熔池金屬的流動(dòng)、熔池的結(jié)晶形核及結(jié)晶生長等過程有顯著作用2018人人操人人插，使堆焊層的一次結(jié)晶組織細(xì)化美女性爱一区二区在线，控制硬質(zhì)相的分布，減小化學(xué)不均勻性疯狂伦交成人网站视频，從而提高了堆焊層金屬的硬度和耐磨性97人人模人人爽人人喊免，全面改善堆焊層的性能。

The results reveal that spectra obtained by different parametric methods are similar. The spectra of normal cells' voltage have only one noticeable lobe due to fluctuation of molten alumina at anodes, while spectra of other abnormal cells have one mainlobe and one sidelobe. In cells with carbon in bath the spectral mainlobe of cell voltage is still due to the fluctuation of molten alumina at anodes and the sidelobe is due to the fluctuation of carbon in bath; in cells with metal pad wave, the spectral mainlobe is due to metal pad waving and the sidelobe is still due to the fluctuation of molten alumina at anodes. Compared with wavelet packet analysis, spectral analysis is simpler and takes less time in calculation, which is a big merit in the large-scale application of online diagnosis systems of working conditions in aluminum reduction cells.

研究結(jié)果表明：不同的參數(shù)估計(jì)法得到趨于一致的頻譜分析結(jié)果思思热在线国产，正常槽只有1個(gè)尖銳譜峰国产亚洲视频网站国产，對應(yīng)于陽極下熔融氧化鋁涌動(dòng)的特征峰，其他故障槽都有2個(gè)特征譜峰97午夜理论理论福利无码，即1個(gè)主峰和1個(gè)次峰影音影音先锋在线资源AV，碳渣槽的主峰仍然對應(yīng)著陽極下熔融氧化鋁涌動(dòng)特征峰，次峰對應(yīng)懸浮碳渣的涌動(dòng)特征峰精品偷拍日韩第一页视频网站；鋁液波動(dòng)槽主峰對應(yīng)鋁液波動(dòng)特征峰高中女生屁股被操在线播放视频，次峰對應(yīng)著熔融氧化鋁涌動(dòng)的特征峰；頻譜分析相對于小波包分析具有算法簡單AAAAAA黄色片、耗時(shí)少又色又猛又黄的视频、物理意義明確等特點(diǎn)，在槽況在線診斷系統(tǒng)的大規(guī)模推廣中具有優(yōu)勢亚洲中文字幕一区二区精品。

molten metal bath dip brazing：金屬浴釬焊

浸沾釬焊 dip soldering; dip brazing | 金屬浴釬焊 molten metal bath dip brazing | 爐中釬焊 furnace brazing; furnace soldering