方管焊接時會因為不同的原因而出現(xiàn)不同的問題，需要一一對應(yīng)問題找原因，然后做好處理工作，這樣才能預(yù)防下次在此出現(xiàn)該問題。如何方管焊接時出現(xiàn)弧坑及焊縫問題怎么去處理呢？

　　There will be different problems in square pipe welding for different reasons. It is necessary to find out the causes of the problems one by one, and then do a good job in dealing with them, so as to prevent the problem next time. How to square pipe welding arc pit and weld problems how to deal with it?

　　弧坑：焊接電流過大，焊縫間隙過大，填充金屬量不足。應(yīng)該正確選擇焊接電流和焊接速度，控制焊縫間隙均勻，適當(dāng)加快填充金屬的添加速度。先清理弧坑及其周圍，再進(jìn)行焊補。若弧坑內(nèi)有氣孔，應(yīng)排除夾渣或裂紋。

　　Arc pit: welding current is too large, weld gap is too large, filling metal quantity is insufficient. The welding current and welding speed should be selected correctly, the weld gap should be controlled evenly, and the adding speed of filling metal should be appropriately accelerated. The arc pit and its surroundings should be cleaned before welding repair. If there are pores in the arc pit, slag or crack should be excluded;

　　焊縫表面形狀和尺寸偏差：坡口角度不當(dāng)、裝配間隙不均勻、焊接規(guī)格選擇不當(dāng)、焊接電流過大或過小、焊接速度不均、帶材輸送方式不正確、焊條或焊絲過熱等。選擇正確的焊接規(guī)格、合適的焊條及其直徑，調(diào)整裝配間隙，均勻輸送焊條，避免焊條和焊絲過熱?？筛鶕?jù)缺陷采用碳弧氣刨和批鑿修正，并用砂輪磨平。焊縫過窄或過低時，應(yīng)進(jìn)行焊接修補。

　　Deviation of weld surface shape and size: improper groove Angle, uneven assembly clearance, improper selection of welding specifications, welding current is too large or too small, uneven welding speed, incorrect conveyor mode of strip, overheating of electrode or wire, etc. Choose the correct welding specification, appropriate welding rod and its diameter, adjust the assembly gap, evenly transport welding rod, avoid overheating of welding rod and wire. The defects can be corrected by carbon arc gouging and batch gouging, and polished with grinding wheel. When the weld is too narrow or too low, it should be repaired by welding.

　　如果想要預(yù)防后續(xù)在此出現(xiàn)問題的話，就要在濟(jì)南方管焊接時做好相應(yīng)的工作才是，比如焊接方管如有破損，應(yīng)進(jìn)行拋光處理，尤其是與碳鋼件接觸造成的劃痕、飛濺，切渣造成的破損，須仔細(xì)有效清理；焊管方管的酸洗鈍化有必要嚴(yán)厲按工藝要求進(jìn)行鈍化；焊管方管外表處理完畢后，應(yīng)做好防護(hù)，防止人員撫摸和油污、塵埃等雜物的二次污染。等等。

　　If you want to prevent the follow-up problems in this, it is necessary to do the corresponding work in welding, such as welding square pipe if there is damage, should be polished, especially with carbon steel contact caused by scratches, splashes, cutting slag damage, must be carefully and thoroughly clean; Pickling passivation of welded tube square tube is necessary to be passivation strictly according to the process requirements; After the surface treatment of welded pipe square pipe, should do a good job of protection, to prevent people touching and oil, dust and other sundry secondary pollution. And so on.

　　總之，焊接前的檢查工作必不可少，檢查方管的質(zhì)量材質(zhì)如何，檢查焊接設(shè)備怎么樣、是否會出現(xiàn)問題、是否有異常前兆等等。如何處理方管焊接時出現(xiàn)弧坑及焊縫問題？便是以上內(nèi)容了，了解更多就來網(wǎng)站www.xpj55507.com咨詢！

　　In short, the inspection work before welding is essential, check the quality and material of the square tube, check the welding equipment, whether there will be problems, whether there are abnormal precursor and so on. How to deal with the arc pit and weld problems in square pipe welding? Is the above content, know more to consult the website!