Tsev > Xov xwm > Ntsiab lus
Zoo thiab Disadvantages ntawm no-kuav los tiag thiab kub-kuav los tiag
Jan 07, 2017

Zoo thiab disadvantages ntawm kub-kuav los tiag:
Zoo: puas ingot casting, refined steel lis thiab microstructure uas ntaus tau tsis xws luag, ua compact steel quas, khees me ntsis lawm txhua yam khoom. Txoj kev txhim kho no yog mas reflected nyob rau hauv lub tsheb ntxuag, ua hlau rau qee yam twg lawm isotropic; txoj kev ua npuas, kab nrib pleb thiab xoob thaum pouring, los yog yuav ua welded siab kub thiab siab.
Disadvantages:
1. tom qab dua mus txog cov kub-kuav los tiag steel tsis-nws yog xim hlau inclusions nyob rau hauv lub (mas sulphides and oxides, silicates) cov laminate, cov layered (nyuaj). Layering steel thickness tensile ntawv qub yig, thiab tej zaum tus weld contraction tshwm torn. Vuam contraction ntawm lub hom ntau nqi yield kis ntawm ib hom vim raug yuam los ntawm ob peb zaug, npaum li cas uas loj tshaj qhov load rau ib hom;
2. residual stresses los los sis tsis ncaj cua txias. Siab residual hla quab yuam lwm qhov-equilibrium kev nyuab siab nyob rau hauv, khej ntau yam txog cov hlau kub-kuav los tiag ua tej residual kev nyuaj siab, kev seem me me qab residual stresses ntau dua. Residual stresses yog tshuav nyiaj li cas, tiam sis kuj ntawv steel neeg hauv lwm cov quab yuam yuav cuam tshuam. Xws li deformation, stability, kuj yuav nkees heev, tej zaum yuav muaj kev phiv nyhuv.
Zoo thiab disadvantages ntawm tus mob khaub thuas rolling zeb:
Zoo: ceev, siab tso zis, thiab tsis muaj kev puas tsuaj rau lub txheej, koj muaj peev xwm tsim ntau yam khej, thiab qhov xav tau kom pab tau rau cov hauj lwm uas siv tshuaj; muaj ib tug loj yas deformation ntawm tus mob khaub thuas-kuav los tiag hlau, uas pab txoj kev yield kis ntawm hlau.
Disadvantages:
1. Txawm hais tias tsis muaj tom qab kub yas txoj kev compression, tab sis muaj puas tseem residual kev nyuab siab nyob rau hauv sab lus, muaj feem rau tus yam ntxwv hauv ntiaj teb no thiab lub zos buckling uas cov hlau;
2. txias kuav los tiag steel style no feem ntau yog qhib khej, khej dawb ntawm sab torsional mob heev. Niti rov qab dabtsi yog khoov, compression nws dabtsi yog khoov-torsional buckling thiab torsional kev kawm ntawv;
3. txias-ua steel ntsa thickness me me no, tim kaum tsev ntawm cov daim hlau ntws los sib tshuam ntawd tsis thooj, nyob rau hauv concentrated loads ntawm lub peev xwm tseem tsis muaj zog.