Qhov txawv ntawm kub thiab txias dov stainless hlau yog dab tsi?
1. Cold-dov zoo li tus hlau tso cai rau hauv zos buckling ntawm seem kom cov kabmob muaj peev xwm ntawm tus pas nrig tom qab buckling tuaj yeem siv tag nrho; thaum kub-dov zoo li tus hlau tsis tso cai rau hauv zos buckling ntawm seem.
2. Qhov ua rau muaj kev ntxhov siab nyob hauvkub dov steel thiab txias dov steelyog qhov sib txawv, yog li qhov kev faib tawm ntawm ntu ntu kuj txawv heev. Qhov seem kev ntxhov siab faib rau ntawm qhov txias-tsim nyias-walled steel seem yog nkhaus, thaum seem kev ntxhov siab faib rau ntawm cov hlau kub-dov los yog welded steel seem yog zaj duab xis-hom.
3. Lub free torsional rigidity ntawm kub-dov hlau yog siab dua li ntawm txias-kuav los tiag steel, yog li qhov torsional kev ua tau zoo ntawm cov hlau kub dov yog zoo dua li cov hlau txias-dov.
Txias Rolling:
Kub-dov steel coils yog siv los ua cov khoom siv raw, thiab cov nplai oxide raug tshem tawm los ntawm kev khaws cia thiab tom qab ntawd txias-dov tsis tu ncua. Cov khoom tiav yog hard-dov coils. Vim yog kev ua haujlwm txias, thiab ua kom tawv tawv los ntawm qhov txias txias deformation, lub zog thiab hardness ntawm cov tawv dov coils nce, thiab qhov toughness thiab plasticity Performance index txo. yog li cov stamping kev ua tau zoo yuav deteriorate thiab tsuas yog siv tau rau cov khoom uas yooj yim deformations. Hard dov coils tuaj yeem siv los ua cov ntaub ntawv raw hauv cov nroj tsuag kub-dip galvanizing vim kub-dip galvanizing units yog nruab nrog cov kab annealing. Qhov hnyav ntawm cov coils nyuaj yog feem ntau yog 20-40 tons. Cov hlau coils yog txuas ntxiv dov rau ntawm kub dov pickled coils ntawm chav tsev kub. Sab hauv txoj kab uas hla yog 610mm.
Cov khoom nta: Vim tias nws tsis tau muab tshem tawm, nws cov tawv tawv yog siab heev (HRB ntau dua 90), thiab nws cov kev ua haujlwm tsis zoo heev. Nws tsuas tuaj yeem ua tau yooj yim kev taw qhia kev khoov ntawm tsawg dua 90 degrees (perpendicular mus rau coiling kev taw qhia).
Txhawm rau muab nws yooj yim, qhov txias dov yog ua tiav thiab dov raws li kub dov coils. Feem ntau hais lus, nws yog txheej txheem kub dov--pickling--txias dov.
Txias dov yog ua tiav los ntawm cov ntawv kub dov nyob rau hauv chav tsev kub (tsuas yog hais lus, nws yog hais txog kev ua cov hlau phaj los yog hlau strips rau ntau hom hlau ntawm chav tsev kub los ntawm kev kos duab txias, txias dabtsi yog khoov, txias txias, thiab lwm yam txias ua). Cov txheej txheem ua haujlwm tseem yuav ua kom sov lub phaj steel vim yog dov, tab sis nws tseem hu ua txias dov. Txij li thaum kub dov undergoes tas mus li txias deformation, txias dov muaj tsis zoo txhua yam khoom thiab siab heev hardness. Nws yuav tsum tau annealed los kho nws cov khoom siv kho tshuab. Cov tsis muaj annealing yog hu ua hard-rolled coils. Hard-dov coils feem ntau yog siv los ua cov khoom uas tsis tas yuav khoov lossis ncab. Hard-dov coils nrog lub thickness tsawg dua 1.0 muaj hmoo txaus los khoov ntawm ob lossis plaub sab.
Kev kho ntxiv: Cold rolling feem ntau undergoes annealing.
Kub dov:
Qhov zoo: Nws tuaj yeem rhuav tshem cov qauv casting ntawm cov hlau ingot, kho cov nplej ntawm cov hlau, thiab tshem tawm cov teeb meem hauv microstructure, yog li ua rau cov qauv steel ntom thiab txhim kho nws cov khoom siv kho tshuab. Qhov kev txhim kho no feem ntau cuam tshuam rau hauv cov kev taw qhia dov kom cov hlau tsis muaj isotropic rau qee yam; npuas, tawg, thiab looseness tsim thaum lub sij hawm pouring kuj yuav welded nyob rau hauv qhov kev txiav txim ntawm kub thiab siab.
tsis txaus:
1. Tom qab kub dov, cov non-metallic inclusions (tsuas yog sulfides, oxides, thiab silicates) nyob rau hauv cov hlau yog nias rau hauv nyias nyias, ua rau delamination (sandwiching). Delamination zoo heev deteriorates lub tensile zog ntawm steel raws lub thickness kev taw qhia thiab tej zaum yuav ua rau interlaminar tearing raws li cov weld shrinks. Cov kab mob hauv zos uas raug cuam tshuam los ntawm weld shrinkage feem ntau nce mus txog ob peb zaug ntawm cov ntsiab lus tawm los, uas yog ntau dua li cov kab mob tshwm sim los ntawm kev thauj khoom.
2. Kev ntxhov siab uas tshwm sim los ntawm qhov tsis sib xws. Residual stress yog qhov kev ntxhov siab nyob rau hauv nws tus kheej sib npaug thaum tsis muaj zog sab nraud. Kub-kuav los tiag steel seem ntawm ntau seem muaj xws li residual stress. Feem ntau, qhov loj dua qhov loj ntawm ntu ntu ntawm ntu steel, qhov ntau dua qhov kev ntxhov siab seem. Txawm hais tias residual kev ntxhov siab yog qhov sib npaug ntawm tus kheej, nws tseem muaj qee yam cuam tshuam rau kev ua haujlwm ntawm cov khoom siv hlau nyob rau hauv qhov kev txiav txim ntawm sab nraud quab yuam. Piv txwv li, nws yuav muaj kev cuam tshuam tsis zoo rau deformation, stability, qaug zog, thiab lwm yam.
3. Cov khoom kub-kuav los tiag steel yog qhov nyuaj rau kev tswj hwm ntawm cov thickness thiab ntug dav. Peb paub txog thermal expansion thiab contraction. Txawm hais tias qhov ntev thiab tuab yog raws li tus qauv tom qab kub dov thaum pib, tseem yuav muaj qhov txawv tsis zoo tom qab txias. Qhov dav ntawm sab dav thiab qhov tuab tuab, qhov pom tseeb qhov txawv tsis zoo no yuav yog.
Yog li ntawd, rau cov hlau loj, sab dav, tuab, ntev, lub kaum sab xis, thiab ntug kab ntawm cov hlau tsis tuaj yeem yog qhov tseeb.
Cov saum toj no yogqhov sib txawv ntawm txias dov thiab kub dov ntawm stainless hlau. Yog tias koj muaj lus nug, thov koj xav tiv tauj peb! Email:sxthsteel@sxth-group.com
