METHOD FOR SECURING ENDS OF THIN-WALL TUBES IN OPENINGS OF TUBE PLATES

摘要

FIELD: machine engineering, namely production of different-purpose apparatuses including tubes mounted in openings of tube plates. SUBSTANCE: method comprises steps of placing end portions of thin-wall tubes in openings of tube plates; preliminarily cold expanding that portions; introducing insert-branch pipes into end portion of tubes and realizing their common expanding. EFFECT: enhanced reliability of tube end securing. 6 dwge