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济南合金铝卷是如何焊接的?

文章出处:www.brujobike.com 责任编辑:admin 发表时间:2014-10-29 18:16:07

合金铝卷是需要经过焊接等工艺才能使用,下面济南广大铝业的有专家就给大家介绍一下具体的焊接步骤。
  
1、采用化学或机械方法,严格清理焊缝坡口两侧的表面氧化膜;逑词鞘褂眉罨蛩崆逑垂ぜ砻,该法既可去除氧化膜,还可除油污,洗好后的铝合金表面为无光泽的银白色,清理好后立即施焊,如果放置时间超过4h,应重新清理。
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、确定装配间隙及定位焊间距施焊过程中,铝板受热膨胀,致使焊缝坡口间隙减少,焊前装配间隙如果留得太小,合适的定位焊间距能保证所需的定位焊间隙,因此,选择合适的装配间隙及定位焊间距,是减少变形的一项有效措施。
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、选择焊接设备目前市场上焊接产品种类较多,一般情况下宜采用交流钨极氩弧焊,它是在氩气的;は,利用钨电极与工件问产生的电弧热熔化母材和填充焊丝的一种焊接方法。
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、选取焊接方法和参数一般以左焊法进行,焊炬和工件成60度角,焊接厚度15mm以上时,以右焊法进行,焊炬和工件成90°角.焊接壁厚在3mm以上时,开V形坡口,夹角为60°~70°,间隙不得大于1mm,以多层焊完成,壁厚在1.5mm以下时,不开坡口,不留间隙,不加填充丝,焊固定管子对接接头时,当管径为200mm,壁厚为6mm时,应采用直径为3~4mm的钨极,以220~240A的焊接电流,直径为4mm的填充焊丝,以1~2层焊完。
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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