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埋弧焊是在焊劑層下通過電弧進行焊接的一種方法。 具有焊接質量穩定、無電弧、焊接生產率高、煙塵少等優點，是管段制造、壓力容器、箱形梁等鋼結構生產中的主要焊接設備。

Submerged arc welding is a method of using electric arc to weld under the flux layer,With the advantages of stable welding quality,high welding productivity,no arc light and less smoke,it has become the main welding equipment in the production of steel structures such as pressure vessels,pipe segment manufacturing and box-type beams and columns.

應用范圍Scope of application：

半自動埋弧焊小車主要應用于鋼結構、造船、橋梁和壓力容器等行業。

Semi-automatic submerged arc welding trolley is mainly used in steel structure,shipbuilding,bridge and pressure vessel industries.

主要特點Main features：

1、生產效率高：一方面焊絲導電長度縮短，電流和電流密度提高，從而大大提高了電弧溶深和焊絲溶敷效率。(一般不開坡口單面一次溶深可達20mm)另一方面由于焊劑和溶渣的隔熱作用，電弧上基本沒有熱的輻射散失,飛濺也少，雖然用于熔化焊劑的熱量損耗有所增大，但整體熱效率仍有較大提高

High production efficiency:on the one hand,the length of wire conduction is shortened,ａnd the current and current density are increased,thus greatly improving the arc penetration and wire deposition efficiency(Generally do not open groove one-side solution depth up to 20mm).On the other hand,due to the heat insulation effect of flux and slag,there is basically no heat radiation loss on the arc,ａnd there is little the heat loss for melting flux is increased,the overall thermal efficiency is still greatly improved

2、焊縫質量高：熔渣隔絕空氣的保護效果好，焊接參數可以通過自動調節保持穩定，對焊工技術水平要求不高,焊縫成分穩定，機械性能比較好

High quality of welding seam:the protection effect of slag against air is good,ａnd the welding parameters can be kept stable through automatic adjustment,with low requirements on the welder's technical level,stable composition of welding seam and good mechanical performance

3、良好的工作條件：除了減輕手工焊操作的勞動強度外，它沒有弧光輻射，這是埋弧焊的優點

Good working conditions:in addition to reducing the labor intensity of manual welding,it has no arc radiation,which is the unique advantage of submerged arc welding

4、自動焊接：焊接參數可通過自動調節保持穩定。與手工電弧焊相比，焊接質量對焊工技藝水平的依賴程度可大大降低

Automatic welding:the welding parameters can be maintained stable through automatic with manual arc welding,the dependence of welding quality on welder's skill level can be greatly reduced