常见弯管缺陷及措施-刘振彬

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   2005 2*(, 213011)  :,、、、、、、、,、、,。:;;;:TG316.1+92  :B  :1000-3940(2005)02-0011-04FamiliardefectsofbendedtubeandsolvingmethodsLIUZhen-bin(CRIAAHoneywell(Nanjing)Aero-accessoriesCo.Ltd,ChangzhouJiangsu213011,China)  Abstract:Whenthethintubeisbended,itoftenhappensdefects,suchaspile,stagger,hollow,rupture,hump,mark,wrinkle,scratchandsoon.Thisarticleanalyzesbendingdie,tubematerial,technicalparameterandbendingmachine,andthenputsforwardthecorrespondingsolvingmethods.Keywords:thinnerthicknesstube;bending;defect;methods1 引言,、、、,。、。,、、、、,。,。*,34,:2004-04-052 弯管常见缺陷及措施2.1(1a)1(a) (b) (c)Fig.1(a)Metalpile (b)Tangencybetweensharppartofwipedieandbendingdie (c)Metalstagger,。,,。,。,,,。511.5kN,。6 结论(1),,,,。(2),,。(3),,,,,。:[1] ,,,.CrMo[J].,2001,23(6):459462.[2] .[J].,2002,22(2):1516.[3] ,,.[J].,2003,15(1):4245.11  :,(1b),,,。:,;,;,,;,HR15T25~29。2.2 (1c):,(1b),,,。:,。2.3 (2a)2(a) (b) (c)Fig.2(a)Bendhollow (b)Crack (c)Rupture:,。:,、。2.4 (2b):;,;,,。:,;,;。2.5 (2c):;,,;,;(7);,,;、,;,;,;,。:,。;;;,;、,;,;,,,;,。2.6 (3a)3(a) (b)(c)Fig.3(a)Oppositepositionbetweentangentpointofbendingdieandmandrel(b)Humpinaxis (c)Roundhumpofmandrelinbendsection:。:,。2.7 (3b):,。:;/,/,;;;2.8 (3c):;,;:;,;2.9 :;,。,;,;,,:,;,,;;,。122.10 :;,。:,。;,。2.11 (1)(4)4(a) (b) (c)(a)Stepmarkofinsertblock (b)Addcoppersheetonthebacksideofclampdie (c)Markinaxis1):,(4a)。:。2):,,,;,。:,;,(4b);,,。0.035,,。(2)/(4c):,;;,。:;,;。(3)(5a):;,。:,,。,。5 (a) (b) (c)45°~90°Fig.5(a)Markinaxisonbendsection (b)Wrinkleonbendarc(c)Wrinklebetweenangle45°to90°2.12 ()。(1),(5b):,;/,;。:,;,,;(3a)(1.5),。(2)45°~90°,(5c):,;,。:,,。,。(3)(6a)6(a) (b) (b)Fig.6(a)Wrinkleonstraightsection (b)Scratchonbendsection(c)Straightsectionbeforetangentpoint:,;;,,;;,,13;,。:,;,,;,;,;,80%,2~3,。2.13 (1)(6b):;、、;;,;。:,;;;;;(2),。:;;;、、;,。:;;,;,、。2.14 :;;:;/;,;,,。2.15 (6c):,。:,。2.16 ,。:,。:,,;,,,。3 结束语(1)16,、、、,。(2),。:[1] .[M].:,1994.HFB—2500A  200543,HFB-2500A。、、、、、、、,HFB-2500A,,:1、,、、、;,、;、、(PLC)、,、;,,,。2、,。、,,,。(夏庆发)14

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