Apparatus for expanding tubular members

Details Apparatus for expanding tubular members Apparatus for expanding tubular members

B - Operations, Transporting

21

D

153/16

B21D 19/00 (2006.01) B21D 39/08 (2006.01) B21D 39/20 (2006.01)

Patent

CA 1127057

ICL 1223 "APPARATUS FOR EXPANDING TUBULAR MEMBERS" ABSTRACT OF THE DISCLOSURE Apparatus for use in expanding tubes into holes in tube- plates including walls of drums and headers especially in boilers in which an annular body of elastomeric material is compressed axially and expands radially to force the tube into close engage- ment with the wall of the hole. The elastomeric material is supported at its ends by radially expansible supports each made up of pieces sliding on adjacent pieces, the sliding surfaces being forced together by the applied force, the pieces being located on reduced diameter end portions of the body. The invention enables applied pressures or the order of 70,000 psi (4830 bar) to be used to stress the tubeplate beyond its elastic limit without damage to the body caused by extrusion. -1-

369172

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