Taw qhia:
Kev siv cov pob zeb txhawb nqa tau hloov pauv li cas cov qauv tsim hauv qab ntawm kev txhim kho kev lag luam. Ntawm qhov tseem ceeb ntawm txoj kev loj hlob no yog deformed rebar, ib hom kev txhawb nqa steel uas suav tias yog ib feem tseem ceeb hauv kev txhim kho lub zog, khov kho, thiab kev hwm ntawm cov qauv tsim. Koom nrog kuv thaum peb delve rau hauv lub ntiaj teb ntawm nws, tshawb txog nws cov yam ntxwv tshwj xeeb, kev tsim khoom, thiab kev siv ntau yam.
1. Kev nkag siabDeformed Rebar:
Ib hom steel bar hu ua deformed rebar, txwv tsis pub hu ua steel hlau, yog ntau lub sij hawm siv los txhawb kev tsim ntau yam. Nws yog qhov txawv ntawm qhov txawv deformations lossis protrusions uas pab ntxiv dag zog rau kev sib raug zoo ntawm cov rebar thiab cov pob zeb.
Cov vaj tse pob zeb yog qhov ua rau tawg thiab tawg thaum lawv raug kev thauj khoom thiab kev ntxhov siab zoo li cov av qeeg lossis tsheb loj. Txhawm rau txhim kho lawv lub zog thiab ua haujlwm ntev, cov hlau txuas ntxiv yog siv los muab kev txhawb nqa thiab txhim kho lawv lub peev xwm thauj khoom.
Ib qho ntawm cov yam ntxwv tseem ceeb ntawm nws yog nws deformations lossis protrusions raws nws nto. Cov kev tsis sib haum xeeb no nce thaj tsam saum npoo ntawm cov rebar, txhim kho kev sib txuas ntawm cov rebar thiab qhov loj. Tom qab ntawd, lub siab txav ntawm ob qho khoom siv tau zoo dua, txo qhov kev twv txiaj ntawm kev swb thiab ua haujlwm ntawm kev ua tiav ntawm kev tsim qauv.
Cov deformations ntawm qhov chaw ntawm cov khoom tuaj yeem siv ntau hom, nrog rau cov kab hla hla, cov kab ntev ntev, thiab cov duab kauv. Cov qauv tsim tshwj xeeb ntawm deformations yuav nyob ntawm qhov xav tau ntawm kev siv cov rebar thiab cov kev cai ntawm cov qauv pob zeb uas nws tau txhawb nqa. Qhov sib nrug thiab qhov tob ntawm deformations kuj tseem yog qhov tseem ceeb uas cuam tshuam rau kev sib raug zoo ntawm cov rebar thiab cov pob zeb.
Nws muaj nyob rau hauv cov qib sib txawv, nrog rau qib sib txawv ntawm lub zog thiab ductility. Qib ntawm cov rebar siv nyob rau hauv ib qho kev tsim kho yuav vam khom raws li cov ntsiab lus sib txawv, piv txwv li, heap bearing txwv yuav tsum tau, qhov loj thiab intricacy ntawm tus tsim, thiab cov xwm txheej ecological nws yuav confront.Cov qib ntawm cov khoom no muaj xws li ASTM A615, ASTM. A706 thiab ASTM A996.
Ntxiv nrog rau nws lub peev xwm los txhawb cov vaj tse pob zeb, nws muaj lwm yam khoom zoo. Nws yog ib qho yooj yim los txiav, khoov, thiab cov duab, ua rau nws customizable rau tej qhov project yuav tsum. Nws kuj tseem tiv taus corrosion, ua kom lub neej ntev thiab durability ntawm cov qauv nws txhawb nqa.
Hauv kev xaus, nws yog ib qho tseem ceeb hauv kev txhim kho cov pob zeb. Nws qhov tshwj xeeb deformations txhim kho kev sib raug zoo ntawm cov rebar thiab cov pob zeb, txhim kho kev ntxhov siab thiab tiv thaiv slippage. Nws muaj nyob rau hauv cov qib sib txawv thiab yog customizable rau tej yam yuav tsum tau ua, ua ib tug ntau yam thiab txhim khu kev qha kev daws rau qhob reinforcement. Nws siv ua kom lub neej ntev thiab kev nyab xeeb ntawm cov pob zeb ua vaj tse nyob rau hauv ntau yam loads thiab tej yam kev mob.
2. Kev tsim khoom Deformed Rebar:
Kev tsim cov deformed rebar suav nrog cov txheej txheem ua tib zoo tswj xyuas kom ntseeg tau tias cov khoom kawg muaj cov khoom xav tau thiab kev ua haujlwm. Nov yog cov lus piav qhia ntxaws ntxaws ntawm txhua kauj ruam tseem ceeb cuam tshuam:
Kev xaiv hlau
Cov txheej txheem pib nrog kev xaiv cov hlau zoo, feem ntau cov hlau tsis tshua muaj carbon lossis micro-alloyed steel. Cov hom hlau no muab qhov tsim nyog lub zog thiab ductility uas yuav tsum tau siv rau kev txhim kho cov pob zeb.
Kub Rolling
Cov hlau nplaum uas tau xaiv tau muab tso rau hauv qhov kub thiab txias hauv qhov cub. Thaum rhuab, lawv tau dhau los ntawm cov txheej txheem ntawm cov yob hauv lub tshuab kub dov. Cov chais no maj mam txo qhov ntu ntu ntawm cov pob zeb thaum elongating rau hauv ntev, nyias strips. Cov txheej txheem no pab ua kom tiav cov duab thiab qhov ntev ntawm cov khoom xav tau.
Annealing
Tom qab cov txheej txheem kub dov, cov hlau nkag mus rau annealing. Annealing yog txheej txheem kev kho cua sov uas suav nrog kev tswj cua sov thiab cua txias. Cov txheej txheem no pab txo qis kev ntxhov siab hauv cov hlau thiab txhim kho nws cov formability, ua kom yooj yim rau khoov thiab zoo li thaum cov txheej txheem tom ntej.
Txheej txheem deformation
Qhov no yog qhov uas tus yam ntxwv deformations yog imparted mus rau lub rebar. Muaj ntau txoj hauv kev tuaj yeem ua haujlwm, suav nrog:
Rolling
Lub rebar yog dhau los ntawm cov txheej txheem tshwj xeeb tsim cov chais nrog cov qauv lossis ridges ntawm lawv qhov chaw. Cov qauv no nias rau saum npoo ntawm lub rebar, tsim cov deformations. Qhov kev xav tau tshwj xeeb yuav cuam tshuam rau qhov deformations 'zoo li thiab qhov sib nrug.
01
Twisting
Nyob rau hauv txoj kev no, lub rebar yog twisted raws nws ntev, tsim ib tug helical qauv ntawm deformations. Cov txheej txheem twisting no ua rau cov duab xav tau thiab kev ntxhib los mos rau qhov chaw rebar, txhim kho nws cov peev xwm sib txuas nrog pob zeb.
02
Indenting
Lwm txoj hauv kev yog nias lub rebar nrog indentations lossis lugs los tsim cov qauv xav tau deformation. Cov indentations no tuaj yeem tsim tau siv cov tuag tshwj xeeb lossis cov cuab yeej, kom ntseeg tau tias muaj qhov sib xws thiab raug deformations.
03
Kev kho zaum kawg
Tom qab cov txheej txheem deformation, cov khoom yuav raug kho ntxiv kom ua tiav cov khoom siv kho tshuab. Cov kev kho no tuaj yeem suav nrog quenching thiab tempering. Quenching yuav ua kom txias lub rebar sai sai tom qab cua sov nws mus rau qhov kub thiab txias. Cov txheej txheem no pab txhim kho lub zog thiab hardness ntawm rebar. Tempering, ntawm qhov tod tes, yuav tsum maj mam txias lub rebar ua ntej reheating nws mus rau qis dua. Tempering pab txhim kho lub toughness thiab ductility ntawm rebar thaum txo nws cov brittleness.
04
Hauv kev xaus, kev tsim khoom ntawm cov khoom no suav nrog cov txheej txheem ua tib zoo tswj. Los ntawm kev xaiv steel rau kub dov, annealing, deformation, thiab kev kho zaum kawg, txhua kauj ruam ua lub luag haujlwm tseem ceeb hauv kev ua tiav cov khoom xav tau thiab kev ua haujlwm ntawm cov khoom. Cov txheej txheem no xyuas kom meej tias cov khoom kawg yog qhov muaj zog, ruaj khov, thiab muaj peev xwm ua tau zoo ntxiv cov pob zeb ua vaj tse.
3. Txheem Deformed Rebar Loj:
Txheem qhov ntau thiab tsawg
Nws yog ib qho tseem ceeb nyob rau hauv cov khoom siv ntxiv dag zog. Nws yog siv los muab lub zog tensile thiab tiv thaiv kev tawg thiab deformation ntawm pob zeb vim yog cov khoom siv sab nraud thiab ib puag ncig. Txhawm rau kom ntseeg tau tias qhov ua tau zoo ntawm nws, nws yog ib qho tseem ceeb los xaiv qhov loj me rau txhua qhov kev tsim kho.
Standard nws qhov ntau thiab tsawg yog siv tau nyob rau hauv ib tug Scope ntawm widths, nrog rau txhua qhov me me pab kom meej meej kev loj hlob prerequisites.
Loj #3:Qhov no rebar loj muaj ib txoj kab uas hla ntawm 3/8 nti thiab yog haum rau lub teeb rau nruab nrab tsim tej yaam num.
Loj #4:Nrog rau txoj kab uas hla ntawm 1/2 nti, qhov loj # 4 rebar feem ntau yog siv rau hauv slabs, footings, thiab phab ntsa.
Loj #5:Qhov no rebar loj, nrog ib txoj kab uas hla ntawm 5/8 nti, feem ntau yog ua hauj lwm nyob rau hauv nruab nrab mus rau hnyav-lub luag hauj lwm daim ntawv thov.
Loj #6:Ntawm 3/4 nti inch, loj #6 rebar muab kev txhawb zog zoo rau cov qauv loj.
Loj #7:Rebar ntawm qhov loj me no, nrog txoj kab uas hla ntawm 7/8 nti, feem ntau yog siv rau hauv kev tsim kho hnyav xws li txuas hniav thiab txoj kev loj.
Loj #8:Muab lub zog ntau dua, qhov loj # 8 rebar muaj txoj kab uas hla ntawm 1 nti thiab nquag siv nyob rau hauv cov tsev siab siab thiab cov qauv tsim.
Loj #9:Qhov no rebar loj, nrog ib txoj kab uas hla ntawm 1 1/8 nti, yog tshwj tseg rau cov ntawv thov hnyav heev uas yuav tsum tau muaj qhov siab tshaj plaws.
Thaum cov qauv no muaj ntau yam thiab sib haum nrog ntau yam kev tsim qauv, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias kev hloov kho nws qhov ntau thiab tsawg kuj tuaj yeem tsim ua kom tau raws li qhov project tshwj xeeb. Ntxiv nrog rau txoj kab uas hla, lwm yam xws li qhov sib nrug ntawm qhov deformations thiab lub zog tawm los ntawm cov hlau tuaj yeem raug kho kom haum rau kev tsim kho tshwj xeeb.
Ua txhua yam rau hauv tus account, qhov kev txiav txim siab ntawm qhov loj me me distorted rebar yog qhov tseem ceeb los lav qhov ruaj khov thiab ruaj khov ntawm cov qauv tsim ntau heev. Cov txheej txheem loj tuaj yeem siv tau hauv kev lag luam muab qhov dav dav tsim nyog rau cov haujlwm sib txawv, los ntawm lub teeb mus rau cov ntawv thov ntau heev. Txawm li cas los xij, nws qhov ntau thiab tsawg uas tau tsim tshwj xeeb rau ib qhov project kuj tuaj yeem tsim tau, muab kev tsim qauv tsim ntau dua thiab hloov tau.
4.Kev siv ntawm Deformed Rebar:
Deformed rebaryog ib qho tseem ceeb ntawm cov khoom siv hauv ntau daim ntawv thov kev tsim kho, muab lub zog thiab ruaj khov rau cov pob zeb ua vaj tse. Nws tuaj yeem siv rau ntau qhov haujlwm, los ntawm cov tsev nyob me me mus rau kev thauj mus los loj thiab kev sib koom ua ke, ua tsaug rau nws qhov kev hloov pauv.
1.Concrete Reinforcement:
Nws yog dav siv los txhawb cov pob zeb ua vaj tse, xws li hauv paus, kab, kab, thiab slabs. Vim nws cov qauv saum npoo tshwj xeeb, nws muab cov khoom sib txuas zoo nrog cov pob zeb, pab tiv thaiv tensile kev ntxhov siab thiab tiv thaiv kev tawg. Qhov no ua kom lub neej ntev thiab ruaj khov ntawm cov qauv.
2. Cov choj:
Txuas hniav yog raug rau dynamic loads thiab kev ntxhov siab, ua rau lawv raug deformation thiab tsis ua hauj lwm. Nrog rau qhov sib ntxiv ntawm cov khoom no, txuas hniav tuaj yeem tiv taus cov khoom hnyav thiab cov kev ntxhov siab dynamic, ua kom lawv cov kav ntev thiab ntev.
3. Lub tsev
Nws yog dav siv los xyuas kom meej qhov kev ncaj ncees ntawm cov qauv. Nws feem ntau yog siv rau hauv kev tsim kho ntawm tus kheej, kev lag luam, thiab cov qauv niaj hnub, qhov uas nws pab nrog kev pab ntxiv thiab kev cia siab rau cov qauv tsim thiab cov phab ntsa.
4. Txoj Kev thiab Pavements:
Txhim kho txoj kev ua vaj tse thiab pavements nrog nws txhim kho lawv lub zog thiab tiv thaiv kev tawg thiab hnav, ua rau lub neej ntev dua rau kev tsim kho vaj tse.
5.Lwm daim ntawv thov:
Ntxiv rau cov ntawv thov tseem ceeb no, nws pom ntau yam kev siv hauv lwm qhov kev tsim kho. Piv txwv li, nws yog feem ntau ua hauj lwm nyob rau hauv khaws cov phab ntsa, tunnel linings, thiab precast pob zeb ntsiab. Qhov yooj yim ntawm cov khoom no ua rau nws siv tau rau hauv ntau hom kev siv siv los txhim kho cov kav ntev thiab lub zog ntawm cov pob zeb ua vaj tse.
Hauv kev xaus, nws yog ib qho tseem ceeb ntawm cov khoom siv hauv ntau daim ntawv thov kev tsim kho. Los ntawm kev ua vaj tse pob zeb rau kev tsim cov choj, vaj tse, txoj kev, thiab lwm yam kev tsim vaj tsev, nws muab lub zog thiab kav ntev rau cov pob zeb ua vaj tse. Nws versatility thiab tshwj xeeb nto qauv ua rau nws haum rau ib tug ntau yam ntawm kev tsim kho tej yaam num, kom ntseeg tau lub neej ntev thiab stability ntawm cov qauv.
Xaus:
Deformed rebarNws yog lub hauv paus ntawm kev tsim kho niaj hnub, ua lub luag haujlwm tseem ceeb hauv lub zog, ruaj khov, thiab kev nyab xeeb ntawm cov pob zeb ua vaj tse. Nws qhov tshwj xeeb deformations txhim kho nws daim ntawv cog lus nrog pob zeb, ua kom muaj kev hloov pauv kev ntxhov siab thiab tiv thaiv kev slippage. Raws li kev tsim kho kev lag luam txuas ntxiv mus ntxiv, nws tseem yog ib qho khoom siv tsis tseem ceeb hauv kev tsim cov chaw tsim khoom.
Cov ntaub ntawv:
[1] "Deformed Reinforced Bars: Phau Ntawv Qhia rau Lawv Siv Hauv Kev Tsim Kho Vaj Tsev" los ntawm American Concrete Institute (ACI)
[2] "Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement" los ntawm American Society for Testing and Materials (ASTM)
[3] "Rebar Deformations: Hom, Manufacturing Methods, thiab Applications" los ntawm National Institute of Standards and Technology (NIST)
Tiv tauj peb:
Yog tias koj xav paub ntxiv txogdeformed rebar los yog muaj lus nug tshwj xeeb, thov koj xav tiv tauj peb ntawmjasonxie@metaldyj.com. Peb pab neeg ntawm cov kws tshaj lij tau mob siab rau muab kev txhawb nqa dav dav thiab pab koj nrhiav qhov zoo tshaj plaws deformed rebar kev daws teeb meem rau koj qhov kev tsim kho tshwj xeeb.
