Weld cracks in longitudinal frame member

W31.30-0060-01

1 Cleaning welding area and drill at an incline into the end of the crack.

 The angle should be greater than 15° and the drill diameter greater than 6 mm.

Bore pattern

1 Bore

2 Crack

3 Longitudinal frame member

W31.30-0061-01

2 Roughen-up crack in V-shape along its length.

 Grinding angle approx. 60°.

3 Heat up welding zone with weak flame to approx. 150 to 200 °C.

W31.30-0062-01

4 Weld shut the V-seam in several positions (4, 5 and 6).

 Do not weld the bore completely shut.
When welding, swing the top layer (6) with the electrode to the left and right and back again, and stop for a moment (approx. 2 s.) at the right and left with the electrode, to ensure that the electrode has a sufficient drip period and thereby prevent any undercuts. Always weld from above downwards. After welding, particular care should be taken to ensure that slow and uniform cooling is given.

5 Level out the weld seam.

 To avoid any notch effect.

Weld positions

4 Root run

5 Center position

6 Final run