The reason:
Slotting Angle is too small, resulting in pear shape and weld bead cracks during high current welding.
Preventive measures:
Pay attention to the appropriate grooving Angle and current match, if necessary to increase the grooving Angle.
The reason:
Excessive carbon and other alloys in the base metal (weld pass and thermal shadow zone).
Preventive measures:
Use low carbon electrode.
The reason:
In multi-layer welding, the first pass is too small.
Preventive measures:
The first welding metal must be sufficiently resistant to shrinkage stress.
The reason:
The welding sequence is improper, resulting in excessive binding force.
Preventive measures:
Improved structure design, pay attention to the welding order, heat treatment after welding.
The reason:
Wet wire, hydrogen into the weld pass.
Preventive measures:
Pay attention to welding wire preservation.
The reason:
The poor sealing of the sleeve plate leads to uneven surface and stress concentration.
Preventive measures:
Pay attention to the precision of weldment assembly.
The reason:
Slow cooling due to too much welding in the first layer (stainless steel, aluminum alloy, etc.).
Preventive measures:
Pay attention to correct current and welding speed.铜焊丝,Copper Welding Rods,铝焊丝,aluminium welding wire,镍焊条,Nickel electrode,药皮焊条,Flux Coated Brazing Welding Rods
铜焊丝|北京金鹰五矿焊接材料有限公司
|Copper & Copper Alloy Welding Rods | Flux Coated Brazing Rods
