Qhov txawv ntawm cov yeeb nkab hlau tsis muaj qhov kub thiab cov yeeb nkab hlau tsis muaj qhov txias yog dab tsi? Cov yeeb nkab hlau tsis muaj qhov ib txwm yog cov yeeb nkab hlau tsis muaj qhov kub thiab txias?
Cov kav hlau tsis muaj qhov txias feem ntau yog cov me me, thiab cov kav hlau tsis muaj qhov kub feem ntau yog cov loj. Qhov tseeb ntawm cov kav hlau tsis muaj qhov txias yog siab dua li cov kav hlau tsis muaj qhov kub, thiab tus nqi kuj siab dua li cov kav hlau tsis muaj qhov kub.
Cov kav hlau tsis muaj qhov sib txuas tau muab faib ua cov kav hlau kub-dov (extruded) seamless thiab cov kav hlau txias-dov (dov) seamless vim lawv cov txheej txheem tsim khoom sib txawv. Cov kav hlau txias (dov) tau muab faib ua cov kav hlau puag ncig thiab cov kav hlau zoo li tshwj xeeb.
1) Cov kav dej kub dov seamless rau ntau lub hom phiaj sib txawv yog muab faib ua cov kav dej hlau ib txwm, cov kav dej boiler siab qis thiab nruab nrab, cov kav dej boiler siab siab, cov kav dej hlau alloy, cov kav dej hlau stainless, cov kav dej tawg roj av, cov kav dej hlau geological thiab lwm yam kav dej hlau. Cov kav dej hlau txias dov (dial) seamless yog muab faib ua cov kav dej hlau ib txwm, cov kav dej hlau boiler siab qis thiab nruab nrab, cov kav dej hlau boiler siab siab, cov kav dej hlau alloy, cov kav dej hlau stainless, cov kav dej tawg roj thiab lwm yam kav dej hlau, nrog rau cov kav dej hlau carbon nyias-walled, cov kav dej hlau alloy nyias-walled, thiab cov kav dej hlau stainless nyias-walled. Cov kav dej hlau, cov kav dej hlau zoo li tshwj xeeb.
2) Lub cheeb tsam sab nraud ntawm cov kav dej kub-dov seamless ntawm ntau qhov ntau thiab tsawg feem ntau loj dua 32mm, thiab phab ntsa tuab yog 2.5-75mm. Lub cheeb tsam ntawm cov kav dej txias-dov seamless tuaj yeem ncav cuag 6mm, thiab phab ntsa tuab tuaj yeem ncav cuag 0.25mm. Lub cheeb tsam sab nraud ntawm cov kav dej nyias-phab ntsa tuaj yeem ncav cuag 5mm, thiab phab ntsa tuab yog tsawg dua 0.25mm. Kev dov txias muaj qhov tseeb siab dua li kev dov kub.
3) Qhov sib txawv ntawm cov txheej txheem 1. Cov hlau uas dov txias ua rau muaj kev khoov hauv zos ntawm ntu, uas tuaj yeem siv tag nrho lub peev xwm ntawm lub bar tom qab khoov; thaum cov hlau dov kub tsis tso cai rau kev khoov hauv zos ntawm ntu.
2. Cov laj thawj rau qhov seem ntawm cov hlau kub-kuav thiab cov hlau txias-kuav sib txawv, yog li qhov faib ntawm qhov seem kuj sib txawv heev. Qhov seem seem ntawm cov hlau txias-ua nyias-phab ntsa yog nkhaus, thaum qhov seem seem ntawm cov hlau kub-kuav lossis vuam yog zaj duab xis.
3. Qhov kev tawv tawv ntawm cov hlau kub dov yog siab dua li ntawm cov hlau txias dov, yog li qhov kev tiv thaiv torsional ntawm cov hlau kub dov zoo dua li ntawm cov hlau txias dov.
4) Cov txiaj ntsig sib txawv thiab qhov tsis zoo Cov kav dej txias uas tsis muaj qhov sib txhuam yog hais txog cov ntawv hlau lossis cov hlau uas tau ua tiav rau hauv ntau hom hlau los ntawm kev kos duab txias, khoov txias, thiab kos duab txias ntawm chav tsev kub.
Qhov Zoo: Qhov ceev ntawm kev tsim khoom yog ceev, qhov tso zis yog siab, thiab cov txheej txheej puas lawm, thiab nws tuaj yeem ua rau ntau yam duab txiav kom tau raws li qhov xav tau ntawm kev siv; dov txias tuaj yeem ua rau cov yas deformation loj ntawm cov hlau, yog li ua rau lub zog ntawm cov hlau taw tes nce ntxiv.
Qhov Tsis Zoo: 1. Txawm hais tias tsis muaj thermoplastic compression thaum lub sijhawm tsim cov txheej txheem, tseem muaj kev ntxhov siab seem hauv seem, uas yuav cuam tshuam rau tag nrho thiab hauv zos buckling cov yam ntxwv ntawm cov hlau; 2. Cov hlau seem txias-dov feem ntau yog qhov qhib seem, uas ua rau qhov torsional stiffness ntawm seem qis. .Nws yooj yim rau twist thaum khoov, yooj yim rau khoov thiab twist thaum nws raug compressed, thiab muaj kev tiv thaiv torsional tsis zoo; 3. Lub phab ntsa tuab ntawm cov hlau txias-dov yog me me, thiab cov ces kaum txuas ntawm cov phaj tsis tuab, yog li lub peev xwm los dais cov khoom thauj hauv zos tsis muaj zog.
Cov kav dej kub dov seamless yog piv rau cov kav dej txias dov seamless. Cov kav dej txias dov seamless raug dov qis dua qhov kub recrystallization, thiab cov kav dej kub dov seamless raug dov siab dua qhov kub recrystallization.
Qhov Zoo: Nws tuaj yeem rhuav tshem cov qauv casting ntawm cov ingot, ua kom cov nplej ntawm cov hlau zoo nkauj, tshem tawm cov qhov tsis zoo ntawm cov qauv, ua rau cov qauv hlau ntom, thiab txhim kho cov khoom siv kho tshuab. Qhov kev txhim kho no feem ntau pom hauv kev taw qhia dov, yog li cov hlau tsis yog isotropic rau qee qhov; cov npuas, cov kab nrib pleb thiab cov xoob tsim thaum lub sijhawm casting kuj tuaj yeem welded ntawm qhov kub thiab siab siab.
Qhov Tsis Zoo: 1. Tom qab dov kub, cov khoom tsis yog hlau (feem ntau yog sulfides thiab oxides, thiab silicates) hauv cov hlau raug nias rau hauv cov ntawv nyias, thiab delamination (interlayer) tshwm sim. Delamination ua rau cov khoom tensile ntawm cov hlau hauv qhov kev taw qhia tuab puas tsuaj, thiab interlaminar tearing yuav tshwm sim thaum lub weld shrinks. Lub zog hauv zos los ntawm qhov shrinkage ntawm lub weld feem ntau ncav cuag ntau zaus ntawm qhov yield point strain, uas yog loj dua li qhov strain los ntawm lub load;
2. Kev ntxhov siab seem uas tshwm sim los ntawm kev txias tsis sib npaug. Kev ntxhov siab seem yog kev ntxhov siab sab hauv uas tsis muaj zog sab nraud. Cov seem kub dov ntawm ntau qhov sib txawv muaj kev ntxhov siab seem. Feem ntau, qhov loj dua ntawm qhov seem ntawm cov hlau profile, qhov kev ntxhov siab seem ntau dua. Txawm hais tias qhov kev ntxhov siab seem yog qhov sib npaug ntawm tus kheej, nws tseem muaj qee yam cuam tshuam rau kev ua haujlwm ntawm cov hlau nyob rau hauv qhov kev ua ntawm lub zog sab nraud. Piv txwv li, nws tuaj yeem cuam tshuam tsis zoo rau kev hloov pauv, kev ruaj khov thiab kev tiv taus qaug zog.
3. Cov khoom siv hlau kub dov tsis yooj yim rau kev tswj hwm hauv qhov tuab thiab qhov dav ntawm sab. Peb paub txog kev nthuav dav thiab kev cog lus ntawm thermal. Vim tias thaum pib, txawm tias qhov ntev thiab tuab yog raws li tus qauv, yuav muaj qee qhov sib txawv tsis zoo tom qab txias kawg. Qhov loj dua qhov sib txawv tsis zoo, qhov tuab dua qhov tuab thiab qhov pom tseeb dua qhov kev ua tau zoo.