Teeb 1
Q: Qhov twg haum rau qib 30303mm lub kaum sab xis tuav rau kev tsim nqaj ci?
A: Qhov kev xaiv yog nyob ntawm seb lub nqaj load thiab phiaj xwm ua haujlwm. Q235 yog qhov zoo rau lub teeb nqaj bracing (piv txwv, cov nqaj theem nrab hauv cov vaj tse me) nrog nws 235mpa kom muaj zog. Q345 / Q345B ua haujlwm rau nruab nrab {8} Nyem cov nqaj, muab 345mpa kom lub zog thiab cov tawv tawv zoo dua rau kev thauj khoom zoo. A36 sib tw Q235 hauv kev ua tau zoo, tsim nyog rau - cov phiaj xwm txheem. SS400 (JIS) yog ib qho kev xaiv hauv cheeb tsam rau Q235 rau cov lag luam Asian. Rau hnyav - phoo beads (piv txwv li, Q420 / Q460 (420} pa sawm Zam A32 (qib marine) rau kab teeb - nws yog qhov ua kom zoo thiab kim heev.
Q: 303mm lub kaum sab xis bar dhau me me rau lub tsev nqaj nqaj?
A: 30303mm Lub Qub Muag tsis siv rau lub tuam txhab tseem ceeb - brows bearing beams tab sis zoo nyob rau hauv ib tug auxiliary beastents. Lawv ua haujlwm li nqaj bracing kom txhim kho yav tom ntej ruaj khov, tiv thaiv Beam defection. Rau nqaj flange stiffeners (txhawb nqa nqaj nqaj), lawv qhov loj me me fits yam tsis muaj qhov hnyav ntxiv. Lawv tau siv los txuas cov nqaj theem nrab rau cov nqaj tseem ceeb, faib cov khoom seem. Nyob rau hauv lub teeb yuag steel ci (piv txwv li, thaj chaw muaj tsev nqaj hlau), lawv ua tus ntoo khaub lig- kev sib txuas. Thaum me me rau cov kab teeb loj (uas xav tau cov ntu loj xws li i6 10}} Beams), lawv tsis tseem ceeb rau Beam System Accessories, ntsuas kev ntsuas thiab tus nqi.
Q: Dab tsi yog qhov txawv ntawm Q345 thiab Q345B rau Beam siv?
A: Q345B muaj cov stricter nyuaj dua li Q345, tseem ceeb rau kev tso bar nqaj. Q345B xav tau Charpy Qhov Kev Ntsuas Kev Ntsuas ntawm 20 degree, ua kom muaj kev cuam tshuam mus rau brittle bacacture nyob rau hauv nqaj kev co lossis qhov kub hloov. Q345 tsis muaj kev cuam tshuam cuam tshuam dab tsi, ua rau nws muaj kev pheej hmoo rau sab nraum zoov lossis txias}}} cov cheeb tsam kab teeb. Q345B cov ntsiab lus txo cov pa roj carbon (tsawg dua los yog sib npaug rau 0.20%) txhim kho weldability, txo kev tawg hauv nqaj pob qij txha. Rau cov nqaj nthuav tawm rau cov khoom siv hluav taws xob zoo (piv txwv li, cua, kev sib khom khoom siab), Q345B yog qhov yuav tsum tau ua. Ob leeg muaj 345mpa tawm los lub zog, tab sis Q345B lub zog ua rau nws cov qib uas nyiam tshaj plaws rau kev txhim khu kev qha tseem ceeb.
Q: Yuav tsis muaj kev sib npaug 30xx3mm lub hnub qub hloov chaw sib npaug ntawm cov kab sib luag?
A: Yog, Unequatal 30xx3mm Lub Anglle Cov Nqis (piv txwv li, 30503mm) feem ntau zoo dua rau cov chaw nqaj. Cov ceg ntev dua txuas rau Beam flanges / webs rau thaj chaw tiv toj loj, txhim kho load hloov chaw. Lawv tau siv ua beam dai dai rau {{}}}} Leg ntev leg bolts rau lub nqaj, luv ceg txhawb cov qauv txheej txheem theem nrab. Cov ces kaum cov av nplaum uas haum rau cov ntoo uas muaj tsawg, yoog raws cov chaw tsis sib xws. Rau nqaj ntug qhov cuab lub zog, ob txhais ceg tsis sib xws faib cov kev ntxhov siab ntau dua li cov sib npaug. Thaum cov ces kaum sib npaug ua haujlwm rau cov kab sib txuas ua ke, cov khoom tsis sib xws muaj cov tsim tsim kom yooj yim rau cov nqaj sib txuas thiab txhawb nqa.
Q: Yuav ua li cas qhia meej ib 36 30303 mm lub melgle bars ua raws li nqaj nqaj?
A: Ua ntej, thov daim ntawv pov thawj zeb kev ntsuam xyuas (MTC) los xyuas cov txiaj ntsig zoo (ntau dua lossis muaj feem cuam tshuam nrog 0.25% ib astm A36. Kos rau "Astm A36" nyiaj muas rau ntawm bar, nrog rau qhov loj me thiab pob ntaub ntawv. Soj ntsuam qhov sib npaug raug nrog calipers - 30mm obls thiab 3mm tuab yuav tsum nyob hauv ± 0.5mm. Rau nqaj siv, sim veldability nrog me me piv txwv kom ntseeg tau tias tsis muaj kev tawg. Thov cov ntawv qhia thib peb (SGS / BV) rau kev txiav txim siab ntau, lees tias ua raws li cov cim tsev (piv txwv li, Aashto rau Asmeskas Beams). Xaiv cov neeg xa khoom nrog cov ntaub ntawv teev tseg ntawm kev muab A36 rau cov txheej txheem kab ke.
Teeb 2
Q: Vim li cas siv ss 400 30303 Poj niam lub me me tuav rau kab teeb hauv Asia?
A: SS400 yog tus qauv JIS tau ntseeg dav rau Asian nqaj cov phiaj xwm. Nws lub zog 245mpa kom muaj zog yog ib nyuag qib siab dua Q235, haum nruab nrab} lub teeb ci Cheebtsam. Nws yog hauv zos tsim nyob rau hauv Asia (Suav teb, Nyiv, Kaus Lim Qab Teb), ua kom cov nqi thauj khoom luv luv rau cov neeg tsim khoom hauv cheeb tsam. SS400's Weldability ntais ntawv Q235 / A36, tau tshaj nrog cov nqaj hlau vuam. Nws ua tau raws li Asian lub tsev lis dej num (piv txwv li, Nyiv tus AIJ, Tuam Tshoj tus GB), zam kev ua raws cov teeb meem. Rau me rau nruab nrab Asian kev tsim kho (chaw nyob, cov kab teeb ua lag luam), SS400 sib npaug kev ua tau thiab nqi, ua rau nws mus-}}
Q: {{0 {}} Lub hli kaum kev cuam tshuam rau cov kab teeb muaj chaw nyob?
A: Yog, Q420 (420mpa tawm los lub zog) yog feem ntau overkill rau cov qauv nyob ntawm kab teeb. Thaj chaw kab teeb muaj tsawg rau nruab nrab loads, uas Q235 / Q345 tuaj yeem kov tau yooj yim. Q420 yog tsim rau cov kab teeb meem hnyav lossis siab {{{{}} sawv daws teeb meem, muab ntau zog tshaj qhov uas xav tau rau cov tsev. Siv Q420 nce nqi los ntawm 30 {13-}}} 50% piv rau Q235 yam uas tsis muaj txiaj ntsig ntxiv. Nws tseem nyuaj rau txiav thiab khoov rau ntawm qhov chaw, xav tau cov cuab yeej tshwj xeeb. Txawm li cas los xij, rau cov tsev muaj khoom kim heev nrog cov kev cai hnyav
Q: Dab tsi nto kev kho ua 30303mm Beam Angle yuav xav tau?
A: Kev kho kom nto nyob ntawm chaw nyob nqaj thiab ib puag ncig. Kub {{- dip galvanization yog qhov zoo tshaj plaws rau sab nraum zoov Beams (piv txwv li cov txheej av ntawm zinc uas tiv taus xeb rau 20-30 xyoo. Epoxy Painting Ua haujlwm rau sab hauv txaj, muab cov xeb tiv thaiv thiab cov xim kev cai, xav tau rov ua dua txhua txhua 8-12 xyoos. Rau cov nqaj nqaj nqaj (piv txwv li, bracing sab hauv), blackening (oxide txheej) txwv tsis pub muaj xeb me me ntawm tus nqi tsawg. Cov kab uncoated tsuas yog tsim nyog rau qhuav, sab hauv kab teeb nrog luv lifespanes luv. Galvanization yog qhov nrov tshaj plaws rau Beam lub qhov muag, raws li nws ua kom ruaj khov tsis muaj kev saib xyuas.
Q: Tau Q235 thiab 36 30303 mm cov kab tuav tau sib xyaw ua ke hauv nqaj nqaj?
A: Yog, Q235 thiab {{1} mm mm cov ceg tuaj yeem sib xyaw hauv qhov tsis- Cov ntaub ntawv ceeb toom tseem ceeb. Ob qho tib si muaj yam zoo sib xws paib lub zog (Q235: 235MPA, A36: 250MPA) thiab Weldability, kom ua tau cov pob qij txha sib tshaj. Sib tov lawv rau tus nqi ua tau zoo -}}} siv A36 rau qhov xav tau me ntsis siab dua lub zog (piv txwv, nqaj nqaj) thiab Q235 rau bracing. Zam kev sib xyaw hauv cov nqaj ntoo loj los yog cov chaw seismic, uas muaj zog sib xws yog qhov tseem ceeb. Xyuas kom meej ob qho tib si raws li cov phiaj xwm lis dej num: A36 rau cov lag luam Astm, Q235 rau kev lag luam GB. WELD nrog E6013 Electrodes, uas ua haujlwm rau ob qib, kom tswj hwm kev sib raug zoo.
Q: Dab tsi yog qhov hnyav ntawm 30303mm thiab 30403mm kaum ntse ntse pob?
A: 30303mm sib npaug lub cav bar hnyav ~ 1.38kg / m (suav × 3 {{{{{{{} × 9. × (30+40-3)). Qhov hnyav sib txawv los ntawm qhov tsis sib xws ceg cov khoom siv ntxiv. Kev paub txog qhov hnyav yuav pab ua kom muaj kev suav ua kom muaj peev xwm ua kom muaj peev xwm ua kom lub ntsej muag tsis zoo tshaj li lub caj pas tsis ntau tshaj li lub caj pas. Nws tseem AIDS hauv kev xa khoom: 1000 meters ntawm 30303mm tuav hnyav ~ 1.38 tons, Yooj yim Logistics npaj. Qhov hnyav sib xws (± 2% kam rau)- cov kab ntsug tsawg yuav muaj cov phab ntsa nyias nyias, tsis haum rau kab teeb. Tus neeg xa khoom muab cov kab kos hnyav, tab sis xyuas qhov ntsuas nrog cov mis ua kom pom tseeb.
Teeb 3
Q: Vim li cas thiaj xaiv Q345B tshaj A36 rau 30303mm Beam Angle cov khoom?
A: Q345B yog qhov zoo dua rau Beam lub qhov muag me me uas xav tau muaj zog thiab muaj zog ntau dua. Nws lub zog 345mpa tawm lub zog surpasses A36's 250MPA, txhawb nqa cov nqaj hnyav loads nrog tib lub 3mm tuab. Q345b qhov kev ntsuas cuam tshuam rau nws tiv taus Beam kev co thiab kev qaug zog, tseem ceeb rau ntev- lub sij hawm kev ua tau zoo. Nws muaj zoo dua qis - kub ua tau ({}}}} 20 degree} cov cheeb tsam kab teeb. Q345B Weldability yog piv rau A36 tab sis cov ntawv muaj zog pob qij txha rau cov nqaj sib txuas. Rau nruab nrab-load teeb lossis chaw hnyav, Q345B muaj tus nqi zoo dua A36, txawm hais tias ib tug 10-15% siab dua tus nqi.
Q: 303 hli carbon steel steel lub sib nqus?
A: Yog, tag nrho 30303mm carbon steel lub kaum ntse ntse cov pob zeb (Q235, Q345, A36, SS400) sib nqus. Carbon Steel muaj cov ntsiab lus hlau siab, uas teb rau cov sib nqus teb. Cov cuab yeej no yog pab tau rau nqaj teeb nruab {{}} Cotse tuaj yeem tuav lub kaum sab xis nyob rau hauv vuam, txhim kho qhov raug. Tsis zoo li tsis yog- sib nqus cov hlau (Aluminium), Carbon Steel Steel tsis cuam tshuam kev ua phem (lub zog, weldability). Nws kuj tseem pab txheeb xyuas cov pa roj carbon hlau: cov khoom siv cuav (piv txwv li, txhuas coated) yuav tsis nyiam cov hlau nplaum. Rau cov phiaj xwm nqaj, hlau nplaum yog qhov kev coj ua, tsis yog kev tsis zoo, thiab yog muaj raws li txhua tus kab hlau.
Q: Dab tsi yog MOQ rau 30303 hli Q460 Lub kaum sab xis ob muag rau kab teeb?
A: MOQ rau 30303mm Q460 Lub kaum sab xis sib npaug yog feem ntau 5 - 10 tons, siab dua li qib ib yam li Q235. Q460 yog qhov siab {- muaj zog qib tsim nyob rau hauv me me batches, yog li cov neeg xa khoom yuav tsum muaj tsawg kawg nkaus tsim tau ntau lawm. Rau hauv-Tshuag Q460, MOQ yuav poob rau 3 tons, tab sis kev muaj tsawg. Cov xaj xaj sib xyaw (piv txwv li, q460 + l345b) tuaj yeem qis dua moq mus rau 5 tons. Rov ua cov neeg yuav khoom lossis cov ntawv cog lus loj yuav sib tham 2-3 tons moq. Cov MOQ siab dua yog vim Q460 qhov tshwj xeeb siv nyob rau hauv hnyav nqaj ntsoo, qhov uas xav tau tsawg dua cov qhab nia.
Q: Tau 30303mm Lub Kaum Nroo Cov Nqis Yuav Drilling rau Beam Sib Txuas?
A: Yog, 30303mm Lub kaum ntse ntse tuav yog yooj yim rau laum rau nqaj nqaj. Lawv 3mm tuab ua haujlwm nrog cov qauv hss xyaum, tsim 4 {- 8mm qhov rau bolts lossis rivets. Drilling yog qhov nyiam dua rau tshem tawm cov pob qij txha, tso cai rau kev tu tus nqaj lossis hloov. Siv lub rooj raug kaw rau qhov tseeb-qhov yuav tsum ua kom haum nrog Beam flanges kom ntseeg tau kev sib txuas nrog kev sib txuas kom ruaj ntseg. Deburr qhov tom qab drilling kom tiv thaiv xeb thiab ntsia liaj qhov rooj puas tsuaj. Rau Q345 / Q460 qib, siv cobalt laum yog qhov drilling ntau daim, raws li lawv nyuaj dua Q235. Drooj lub kaum sab xis sib npaug yog ib qho rau Beam bracing thiab theem kev sib txuas hauv cov phiaj xwm ua haujlwm.
Q: Ntev npaum li cas 30303mm Beam Angle Bars Zaum Kawg?
A: Lub neej pabcuam li ntawm 30 txog 80 xyoo, nyob ntawm qib, kev kho mob, thiab ib puag ncig. Galvanized Q345B / A36 kav 50 {14 14}}}}}}}}}, ru tsev ci) vim yog corrosion tsis kam. Pleev Xim Q235 kav 30-}} 50 xyoo} 50 xyoo nyob sab hauv tsev lossis 20-30 xyoo sab nraud (nrog rov qab). Uncoated tuav lub xeem 15-25 xyoo sab nraud, pheej hmoo ua kom muaj xeb muaj zog. High-zog qib (Q420 / Q460) nrog kev kho kom phim Q345B lub neej tab sis muaj lub zog ntev dua hauv kev thauj khoom hnyav. Nyob rau hauv cov chaw qhuav dej qhuav, lub neej ntev ntxiv los ntawm 10-20% piv rau ntug hiav txwv / qab ntsev. Kev teeb tsa (zam rau cov ntxiab dej) thiab txij nkawm (kev soj ntsuam txhua xyoo) kuj muaj lub neej kev pabcuam txhua xyoo) kuj tseem ceeb lub neej.
Teeb 4
Q: Dab tsi yog qhov txawv ntawm Q420 thiab Q460 rau Beam Angle cov khoom?
A: Q420 and Q460 differ in strength and application for beam use. Q460 has a higher yield strength (460MPa vs. 420MPa for Q420), supporting heavier loads in industrial or high-rise beams. Q460 requires stricter chemical composition control (lower carbon, higher manganese) for toughness, making it more expensive. Q420 is used for medium-heavy beams (e.g., commercial building main beams), while Q460 fits ultra-heavy beams (e.g., warehouse crane beams). Both need preheating during welding (for thickness >6 hli), tab sis Q460 yuav tsum muaj ntau dua preheat temps (150℃vs . 100 degree). Txog 30303mm loj, q420 muaj ntau dua - q460 feem ntau siv nyob rau hauv cov nqaj loj.
Q: Yog tsis sib xws 30503mm lub kaum ntse ntse cov khoom dua rau Beam flanges?
A: Yog, Unequatal 30503mm kaum sab xis ntawm cov pob zeb yog qhov zoo dua rau cov nqaj flange qhov ua haujlwm. 50 hli ceg txuas txuas mus rau lub teeb ci flange, muab thaj chaw sib tiv tauj ntev dua uas faib cov kev ntxhov siab ntau dua li muaj kev sib luag 30303mm tuav. Lub 30 hli ceg ua raws li lub stiffener, tiv thaiv flange buckling hauv kev thauj khoom. Lawv haum nruab nrab ntawm cov kab ze ze, qhov twg tus luv ceg kom tsis txhob cuam tshuam nrog lwm cov tib yam. Vuam ntev txhais ceg ntev mus rau cov flange tsim kom muaj zog ua kom muaj cov kab sib npaug. Rau Beam flanges txhawb kev hnyav thauj khoom (piv txwv, qhob slabs), 30503mm tsis sib xws Bars kev sib luag thiab qhov chaw ua haujlwm, kev sib txig sib luag, kev sib txig sib luag.
Q: Yuav kuaj li cas yog tias Q345B 30303mm tuav yog qhov zoo rau cov teeb?
A: Tshawb xyuas qhov zoo los ntawm thawj zaug txheeb xyuas lub MTC, uas yuav tsum qhia cov txiaj ntsig zoo tshaj lossis sib npaug ntawm 345mPa thiab cuam tshuam ntau dua lossis sib npaug lossis sib npaug ntawm 34J). Tshawb xyuas cov kab nrib pleb Siv calipers kom paub meej 30 × 30 × 3mm qhov ntev (kam rau ± 0.3mm rau thickness). Ntsuam xyuas hardness nrog lub tes taw nqa (brinell 140 {{}} 180 hb rau Q345B). Khoov ib qho piv txwv 90℃-qucality bars yuav tsis keej, qhia tau qhov ua tau zoo. Thov cov khoom xa khoom ISO 9001 ntawv pov thawj thiab cov phiaj xwm Bean ua pov thawj. Zam kev tuav nrog cov cim fuzzy lossis ploj MTC, vim tias lawv yuav tsis ntsib cov qauv kev nyab xeeb Beam kev nyab xeeb.
Q: Puas yog {32 30303 Mm lub kaum ob tuav tau siv rau lub tsev nqaj?
A: A {32 30303 Poj Niam Lub Pob Muag tsis zoo rau cov qauv lub tsev kab teeb. A32 yog cov tub rog -} Qib qeb tsim rau nkoj Hulls, nrog ntau dua cov txiaj ntsig zoo (315MPA) dua Q345B. Nws yog qhov ua kom zoo rau feem ntau lub tsev kab teeb, nqi 40 {{- 60% ntau dua li Q345 tsis muaj txiaj ntsig cov txiaj ntsig. A32's Tshuaj Muaj Tshuaj Ua Ntej Ua Ntej Ua Ntej Saliswater tsis kam, tsis yog nqaj - kev sib nrawm. Txawm li cas los xij, rau cov ntug hiav txwv lub tsev Beams raug rau cov ntsev loj, A32 tuaj yeem siv, tab sis Q345B nrog galvanization yog qhov txuas ntxiv. Rau cov haujlwm tsis yog dej hiav txwv, A32 yog tsis tsim nyog thiab ua tau zoo rau cov ntawv thov nqaj.
Q: Dab tsi vuam hom ua haujlwm tau zoo tshaj plaws rau 30303mm Bean Angle cov khoom?
A: GMaw (MIG VUAM) yog txoj kev zoo tshaj plaws rau 30303mm Beam Angle cov khoom. Nws tau nrawm thiab ua cov pob qij txha ua kom muaj zog- tseem ceeb rau nqaj sib txuas. Siv ER70s {- 6 xaim, uas phim cov qib feem ntau (Q235, A345, A345, A36) thiab ua kom muaj zog sib koom tes. Smig (pas vuam) nrog E6013 Electrodes yog qhov kev xaiv zoo rau ntawm {13} Kev kho kom zoo, raws li nws yuav tsum tau cov khoom siv tsawg dua. Zam GTaw (Tig) tshwj tsis yog qhov tseem ceeb- nws qeeb qeeb thiab tsis tseem ceeb rau tus qauv nqaj pob qij txha. Rau siab - lub zog qib (Q420 / Q460), siv ER80S-D2 xaim thiab preheat rau 100 degree. WELD ntawm 120-180A tam sim no (kho raws qib) rau kev nce qib siab yam tsis muaj kev hlawv los ntawm 3 hli thickness.
Teeb 5
Q: Vim li cas q 235 30303 Poj Niam Lub Cim BAR nrov rau Beam bracing?
A: Q 235 30303 Poj Niam Lub Bar yog nrov rau Beam swm vim muaj nqi thiab ua haujlwm. Nws yog 20 {{4 4}} 30% pheej yig dua Q345, peev nyiaj txiag {}} paub cov phiaj xwm bead. Nws lub zog los ntawm 235Mpa tawm lub zog yog qhov txaus rau bracing, uas tsuas yog xav tau kom tawm tsam cov rog tom qab, tsis yog cov khoom ntim tseem ceeb. Q235 yog ib qho yooj yim los txiav, khoov, thiab weld nrog cov cuab yeej yooj yim, zoo tagnrho rau ntawm- site boss bracing installation. Nws tau dav stocked los ntawm cov neeg muab khoom, ua kom tau txais kev ceev ceev ceev rau cov teeb meem ceev. Q235 txoj kev ductility tiv thaiv kev tawg sai yog tias bracing yog overloaded, ntxiv cov npoo kev nyab xeeb. Rau tsis - Tseem Ceeb Ci Beam BRACING, nws yog qhov kev xaiv tau zoo tshaj plaws.
