FIELD: metallurgy.
SUBSTANCE: casing is made from a tube billet by rotational crimping of the curved section in several passes in a cold or hot state, then the rotary extraction of the cylindrical shell part is performed in a cold state, after which the sheath edges are trimmed; on the thickened rings, a slot is formed for the lock connection with the cladding, they assemble and weld the shell with rings in an automatic welding machine. Perform a visual inspection of the quality of welded joints, final machining with threading on welded rings and airtightness tests.
EFFECT: accuracy of geometric dimensions, quality of treated surfaces and strength of welded joints are ensured.
5 cl, 4 dwg
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