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Sep 12, 2020
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How to fill a large weld bead

How to fill a large weld bead

When welding, it may be necessary to fill a wide enough seam. For a non-professional welder, this is an almost impossible task. In fact, everything is not so difficult if you use one trick.

What you need:

  • a pair of electrodes;
  • a hammer;
  • sandpaper;
  • grinder with a cleaning disc.

The process of filling large joints

To prevent the molten electrode from flowing down when the plane is applied, and the parts to be connected not to burn, it is necessary to use an additional rod. It is easiest to work with a cleaned electrode core of the same cross-section as that of which you are welding. It needs to be tapped with a hammer and the rest of the coating with sandpaper is wiped off.

How to fill a large weld bead

How to fill a large weld bead

When welding a hole, it is necessary to apply the end of the cleaned core to its edge, creating a gap of a couple of millimeters. The seam is applied between the bar and the hole wall.

How to fill a large weld bead

The attached core melts perfectly, while the hot metal from it keeps the given plane. Having reached the edge, you need to tear off the applied bar on the hot one and put it again a little higher. This fills the entire hole. In this case, the part itself is not burned through. It is quite realistic to weld sheet steel or a pipe with a wall section of less than 2 mm. After welding, the seam is grinded with a grinder.

How to fill a large weld bead

How to fill a large weld bead

How to fill a large weld bead

How to fill a large weld bead

The same technique is used if a long, wide suture is required. First, the end of the core is pressed against the beginning of the seam to interlock the edges by welding. Then the bar is torn off and placed along the seam at an acute angle. As a result, a large gap between the parts to be welded is partially covered by the core and is split into 2 narrow gaps. Next, filling is performed with a transverse movement of the electrode.
This welding technique will allow you to weld almost any hole or gap, of course, within reasonable limits. At first, before gaining experience, the core will adhere to the seam. You need to try to displace it while the metal is liquid, and such problems will not arise.

How to fill a large weld bead

How to fill a large weld bead

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