SA179 Boiler Tube Welding Operation Process

 1. Confirm that the assembly quality meets the requirements of the group, first perform spot welding of SA179 components, and the length of spot welding

The degree should be 20~30mm, and it should be firm.
2. After all the components are spot welded, the geometric dimensions of the components should be re-checked before the formal welding can be performed.
catch.
3. In order to ensure the penetration of SA179 pipes, butt joints with a thickness of more than 8mm should be welded with V-shaped or K-shaped grooves, and should meet the requirements of SA179 for the height of weld reinforcement and the height of welding feet.
4. When welding SA179 boiler tubes, methods such as symmetry, jump welding, and segmental de-welding should be adopted to control the deformation of components caused by welding.
5. When the end of the welding seam of SA179 boiler tube ends arc, the molten pool should be filled.
6. For multi-layer welding, carefully remove the slag before welding the next layer.
7. For multi-layer multi-pass welding, the adjacent weld bead joints should be staggered, and overlapping is strictly prohibited.

From:http://boilersteelpipe.com/pro/smls/sa179-boiler-tube-welding-operation-process.html

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