公开(公告)号：US3561244A

公开(公告)日：1971-02-09

申请号：US3561244D

申请日：1968-08-12

Applicant: COMBUSTION ENG

Inventor： WOODS JACK L ,  GARNER KENNETH B

IPC: B21D7/06 ,  B21D53/04 ,  B21D53/06 ,  F22B37/10 ,  F22B37/14 ,  B21D43/28 ,  B21D53/02 ,  B21K21/00

CPC classification number: F22B37/14 ,  B21D53/06 ,  F22B37/102 ,  Y10T29/49352

Abstract: AN APPARATUS FOR FORMING OPENINGS IN TUBULAR WELDED WALL PANELS PARTICULARLY USED FOR LINING FURNACE WALLS OF STEAM GENERATORS. AN ADJUSTABLE GUIDE ARRANGEMENT IS ORIENTED WITH RESPECT TO THE TUBES IN THE TUBE PANEL BETWEEN WHICH THE OPENING IS TO BE FORMED AS TO GUIDE THE TUBES UPON MOVEMEBT THEREOF OUT OF THE PLANE OF THE PANEL. HYDRAULIC JACKS LOCATED ON THE OPPOSITE

D R A W I N G
SIDE OF THE PANEL FROM THE GUIDE ARRANGEMENT ALTERNATELY FORCE SHAPED DIES AGAINST COMPLEMENTARY SHAPED PORTIONS OF THE GUIDE ARRANGEMENT TO STRETCH AND BEND THEREBETWEEN THE TUBES OF THE PANEL TO FORM THE DESIRED OPENING WITHOUT DEFORMING THE DISPLACED TUBES.