在焊管銲接完整過程中（zhōng），埋弧焊也是使用電弧進行進行熱源的銲接辦法。埋弧焊時（shí）電弧（hú）是在（zài）關於一層細顆粒物（wù）狀的可撤銷通量包含在相應範圍之內...埋（mái）弧焊（hàn）電源供（gòng）應通常應（yīng）具備陡（dǒu）降外特點，能夠使用溝通(弧焊進行悠（yōu）蕩器)、直流（liú）電流(弧焊（hàn）火力發電機或弧焊整（zhěng）組器)或交、直流電流參加（jiā）。當焊絲決定之後(一般情況下參加於所焊的（de）人（rén）種（zhǒng）)，提供配套支（zhī）持用的通量則轉變為十分重要材（cái）料，它直來（lái）直去產生相應作用焊縫非金屬（shǔ）的量子力學使用性能(尤其是塑性變形及超低溫柔韌)、抗裂使用性能、銲接進行裂縫出現率（lǜ）及（jí）銲接生產率（lǜ）等。焊絲（sī）與通量的參（cān）加量體重比為焊絲：通量=1.1～1.6，視銲接（jiē）搭接片種類、更加所用通量阿彌陀佛、銲接符合規範形式參數（shù）而（ér）定。與冶煉通量比較起來，結合通量有關用量較比節約，約可少用20%身邊（biān）人。
Submerged arc welding (SAW) is also a welding method using arc as heat source in the welding process of welded pipe. When submerged arc welding, the arc is covered by a layer of granular fusible flux. Submerged arc welding power supply should generally have steep drop characteristics. It can be used in AC (arc welding transformer), DC (arc welding generator or arc welding rectifier) or AC/DC combination. When the welding wire is determined (usually depending on the type of steel being welded), the matching flux becomes the key material, which directly affects the mechanical properties (especially plasticity and low temperature toughness), crack resistance, occurrence rate of welding defects and welding productivity of the weld metal. The weight ratio of welding wire to flux is wire: flux = 1.1-1.6, depending on the type of welding joint, the type of flux used and the welding specification parameters. Compared with smelting flux, the amount of sintered flux is less, about 20% less. 單絲（sī）埋弧焊在焊管銲接時因為銲接熔（róng）池容積小、質量小（xiǎo）、仍然存在時段短（duǎn）、結晶體比賽運行速度快，在準譜兒的銲接符合規範下，焊速進行接受能夠，通常為300~600mm/min,過快的焊速極易進行引起熔池比賽結晶體運行速度快而形成銲接進行裂縫，過慢的運行速度又進行引起熱參加過大、熱產生相應作用區持續增寬而使搭接片使用性能需要、製造（zào）效率低。而多絲埋弧焊大都是多絲走向（xiàng）串（chuàn）列（liè），在銲接完整過程中逐漸形（xíng）成其中一個集體熔池，三絲焊時熔池（chí）長度相對即可實現80~100mm上述（shù），熔池仍然存在時段（duàn）長、冶（yě）金學影響盡可能全麵，有豐富的時段供固體和廢物持續浮出（chū）。銲接質量好，隻需（xū）生產工藝和符合規範進行控製的好（hǎo），銲接進行裂縫關於很少。焊速可實現1.0~2m/min上述,製造效率高。比單絲埋弧（hú）焊高3~5倍。
Single wire submerged arc welding (SSAW) for welded pipes is characterized by small weld pool volume, small quality, short existence time and fast crystallization cooling speed. Under certain welding specifications, the welding speed is limited. Generally, the welding speed is 300-600 mm/min. Over-fast welding speed can easily lead to rapid crystallization rate of weld pool cooling and welding defects. Over-slow welding speed also leads to excessive heat input and widening of heat affected zone, which results in joint performance. Decreased production efficiency. The multi-wire submerged arc welding is mostly multi-wire longitudinal series, forming a common molten pool in the welding process. The length of the molten pool can reach more than 80-100 mm during three-wire welding. The molten pool exists for a long time, the metallurgical reaction is sufficient, and there is sufficient time for gas and impurities to float out. Welding quality is good, as long as the process and specifications are well controlled, there are few welding defects. The welding speed can reach more than 1.0~2 m/min, and the production efficiency is high. It is 3 to 5 times higher than single wire submerged arc welding.
埋弧焊（hàn）(含埋弧堆焊及電渣堆焊等)是其中一種電弧在通量層下受到（dào）開展銲（hàn）接的辦法。其本來（lái）的銲（hàn）接質量保持穩定（dìng）、銲（hàn）接生產率高、無弧光及空氣汙染關於很少等長處，使其轉變為壓強器皿、管段製造、箱型梁柱等（děng）十分重要鋼整體結構（gòu）進行製度正當中重點銲接辦法。近些年（nián），盡管接二連三發生了很多種效率更高（gāo）、質量更好的新銲接辦法，但埋弧焊的使用領域仍然未受任意一種相關情況產生相應作用。
Submerged arc welding (including submerged arc surfacing and electroslag surfacing) is a method of arc combustion under flux layer for welding. Because of its inherent advantages of stable welding quality, high welding productivity, no arc and little smoke, it has become the main welding method in the manufacture of important steel structures such as pressure vessels, pipe sections and box-shaped beams and columns. In recent years, although there have been many new welding methods with high efficiency and quality, the application field of SAW has not been affected.
焊管的多絲（sī）埋弧焊是稱為用關於兩根或（huò）關於兩根上述焊絲順利完成相同焊縫的埋弧焊。焊管的（de）多絲埋（mái）弧焊醫衛組銲接設置：內焊（hàn）設置（zhì）由機械（xiè）係統、電動進行控製係（xì）統、銲接係統、通量提供及招生係統、拍攝監督係統（tǒng）五一部分構成。在這當中機械係統重點包（bāo）含：銲接設備前端、懸臂梁（liáng）、懸臂（bì）梁昂首闊步（bù）單（dān）位、焊縫持續跟進調整係統、機座及（jí）天線（xiàn）起伏架等。
Multi-wire submerged arc welding of welded pipe refers to submerged arc welding of the same weld with two or more welding wires. Welding device of multi-wire submerged arc welding machine for welded pipe: The internal welding device consists of five parts: mechanical system, electrical control system, welding system, flux supply and recovery system, video surveillance system. The mechanical system mainly includes: welding head, cantilever beam, cantilever beam support mechanism, seam tracking adjustment system, machine base and wire lifting frame, etc.
焊絲的害怕大方向進行劃成前（qián）傾和後傾。軌道傾角的大方向和（hé）大大小小有所區別，電弧對熔（róng）池的力（lì）和熱實際作用也有所（suǒ）區別，進而產（chǎn）生相應作用焊縫變化。當焊絲（sī）後傾準譜兒觀（guān）點時，因為電弧針對銲接大方向，使熔池前頭的焊件進行接受了傳熱實際作用，電弧對熔池的物態（tài）非金屬流出實際作用削弱，而進行引起（qǐ）焊縫寬而熔深變（biàn）淺。反（fǎn）而，焊縫幅（fú）度較小而熔深更加較大，但易使焊縫（féng）邊際形成未熔合（hé）和咬邊，同時使焊縫（féng）變化變差。
The inclination direction of welding wire can be divided into forward inclination and backward inclination. The direction and size of inclination angle are different, and the force and heat effect of arc on molten pool are also different, thus affecting the weld formation. When the welding wire is inclined backward at a certain angle, the welding parts in front of the molten pool are preheated because the arc points to the welding direction, and the discharge of liquid metal from the molten pool is weakened by the arc, which results in the weld width and shallow penetration. On the contrary, the weld width is smaller and the penetration is larger, but it is easy to cause the weld edge to produce unfused and undercut edges, and make the weld formation worse.
