Single-pass arc welding of thick plate structures of 22K steel under a thin slag layer

Abstract

The efficiency of single-pass automatic arc welding under a thin slag layer (ATL) with the forced formation of weld metal of welded joints in 22K steel with a thickness of 70 mm is shown. The optimum heat input in ATL welding makes it possible to produce in a single pass a welded joint with a finer structure and higher mechanical properties in comparison with electroslag welding. Recommendations for using the ATL method in welding production are outlined.

Keywords:

• Method of arc welding
• rate of heat input
• heat cycle weld
• steel 22K
• weld joints
• metalloqraphic test
• mechanical properties

Notes

Selected from Svarochnoe Proizvodstvo, 2017(5) 3–8.