FIELD: process engineering.
SUBSTANCE: invention relates to electron-beam processing. Pre-welding is performed without grooving and with part-through penetration. Face bead width and height are defined. Grooving is made for main welding to prepare grooving cavity 5 and main welding is carried out on transmitting electron beam through grooving cavity 5. Grooving before main welding is performed to produce groove 6 nearby grooving cavity base with width and height, at least, 15% larger than those of face bead after pre-welding.
EFFECT: high-quality welded joints between large-thickness articles.
2 dwg
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