When welding, the welding rod sometimes can easily stick to the weldment, and it is not easy to arc. The ignition is also easy to extinguish. Why is that? What happens when this happens?
1, welding current is too small.Please refer to the instruction of welding current in electrode box, choose the suitable welding current according to the welding position.2 basic electrode welding with AC welder.J426, J506 and other low hydrogen potassium welding electrodes must be welded with BX series alternating current welding machine with no-load voltage above 70V. The lower the no-load voltage of the welder, the easier it is to stick the welding rod.3, the welding rod model is wrong.J427, J507 and other low hydrogen sodium welding rod, unlike low hydrogen potassium electrode containing arc stabilizer, the welding rod must be welded by DC welding machine. AC welding machine will stick welding rod, cannot arc.4, improper operation. Basic electrode (low hydrogen potassium welding rod, low hydrogen sodium welding rod, etc.) shall adopt the method of striking and striking arc. Just as a match, the end of the welding rod and the construction of contact, a slight rub can ignite the welding arc. If the direct striking method is used, the welding rod is unavoidable.5, technical problems. The arc welding rod should lift the arc 1-3 millimeters rapidly and enter the normal welding mode. Otherwise, long time welding rod and workpiece short-circuit will dip electrode.
Small current, or electrode diameter, or line is too thin, or welding power line to catch bad, or electric welding handle wire or wire, catch the bad, look for yourself, if not all of these phenomena is that electric welder secondary coil, and the short circuit between the tie bar
I am a welding Education under normal circumstances so that you also appeared that the welder hand instability of basic work is not solid, the word "practice" learning when I have seen this kind of situation the old master directly let me practice!
There are several kinds of current, small hand, unfamiliar, 506 and other special welding rod
