合金鋁卷是需要經(jīng)過(guò)焊接等工藝才能使用，下面濟(jì)南廣大鋁業(yè)的有專家就給大家介紹一下具體的焊接步驟。
　　
1、采用化學(xué)或機(jī)械方法,嚴(yán)格清理焊縫坡口兩側(cè)的表面氧化膜。化學(xué)清洗是使用堿或酸清洗工件表面，該法既可去除氧化膜，還可除油污，洗好后的鋁合金表面為無(wú)光澤的銀白色，清理好后立即施焊,如果放置時(shí)間超過(guò)4h,應(yīng)重新清理。
By chemical or mechanical methods, strict clean the surface oxide film on both sides of the weld groove. Chemical cleaning is the use of alkali or acid to clean the surface, the method can remove the oxide film, but also in addition to oil, aluminum surface after a good wash as dull silver, cleaned up immediately after welding, if you place more than 4h should be re-cleaned.
　　
2、確定裝配間隙及定位焊間距施焊過(guò)程中,鋁板受熱膨脹,致使焊縫坡口間隙減少,焊前裝配間隙如果留得太小,合適的定位焊間距能保證所需的定位焊間隙，因此，選擇合適的裝配間隙及定位焊間距，是減少變形的一項(xiàng)有效措施。
Determine the assembly and tacking spacing gap welding process, the aluminum thermal expansion, resulting in reduction of the weld groove gap, the gap before welding assembly if left too small,appropriate spacing tacking tacking to ensure the required clearance, therefore, Select the appropriate assembly clearance and tack welding pitch is an effective measure to reduce distortion.
　　
3、選擇焊接設(shè)備目前市場(chǎng)上焊接產(chǎn)品種類較多,一般情況下宜采用交流鎢極氬弧焊，它是在氬氣的保護(hù)下,利用鎢電極與工件問(wèn)產(chǎn)生的電弧熱熔化母材和填充焊絲的一種焊接方法。
Select welding equipment currently on the market more types of welding products, under normal circumstances should AC TIG welding, which is under the protection of argon, the use of the tungsten electrode and the workpiece asked arc produced by hot melt base metal and filler wire A welding method.
　　
4、選取焊接方法和參數(shù)一般以左焊法進(jìn)行,焊炬和工件成60度角，焊接厚度15mm以上時(shí),以右焊法進(jìn)行,焊炬和工件成90°角.焊接壁厚在3mm以上時(shí),開V形坡口,夾角為60°~70°,間隙不得大于1mm,以多層焊完成，壁厚在1.5mm以下時(shí),不開坡口,不留間隙,不加填充絲，焊固定管子對(duì)接接頭時(shí),當(dāng)管徑為200mm,壁厚為6mm時(shí),應(yīng)采用直徑為3~4mm的鎢極,以220~240A的焊接電流,直徑為4mm的填充焊絲,以1~2層焊完。
Select welding methods and parameters are generally left welding method, welding torch and the workpiece into a 60-degree angle, the welding thickness 15mm or more to the right welding method,welding torch and the workpiece into a 90 ° angle. Welding wall thickness 3mm or more, open V-shaped groove, an angle of 60 ° ~ 70 °, the gap is not greater than 1mm, to multi-layer welding is completed, the wall thickness of 1.5mm or less, without groove, leaving a gap, without filler wire, solder fixing when the tube butt joints, when the diameter is 200mm, the thickness is 6mm, the

diameter should be 3 ~ 4mm tungsten electrode, to 220 ~ 240A welding current to the filler wire diameter of 4mm, and preferably 1 to 2 layer deposited End .
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