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Lus nug: Dab tsi yog qhov kev sib raug zoo ntawm Q345, Q345B, thiab 16mn rau IPE H nqaj?
Teb: Q345 yog tus qauv Suav qis -}} ally {2} Lub zog steel qib (muaj npe rau 1% carbon thiab 1% manganese). Q345B yog sub - qib ntawm Q345 uas yuav tsum muaj 12J Charpy cuam tshuam ntawm chav tsev kub (20 degree), ua kom muaj kev nruj zoo dua li theem pib qib Q345. Tag nrho peb yog qhov tseem ceeb tib cov khoom siv hauv paus, nrog Q345B lub rooj sib tham stricter kev nruj. Rau IPE H Beams, cov kev tsim qauv no feem ntau siv sib hloov pauv hauv kev ua lag luam, tab sis Q345B yog qhov xav tau rau cov ntawv thov xav tau kev cuam tshuam cuam tshuam. Lawv cov tshuaj sib thooj sib thooj (manganese- rich) {} {dov thiab lub zog.
Lus nug: Vim li cas Ipe Q345 H Beams suav hais tias tus nqi yog tus nqi {{}}}}- lub zog?
Teb: Ipe Q345 H nqajs siv qis -} alloy ineloy, tsis muaj feem xyuam nrog npib tsib xee nqi qis. Qhov kub - Rolling cov txheej txheem rau IPE profiles yog paub tab thiab loj {{}-}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Lawv lub zog siab - {{{8} Cov kab ci me me yog txhais tau tias me me ipa cia li hloov me me (piv txwv li, Q235), txiav cov nqi siv thiab tsheb thauj khoom. Lawv tau dav hauv Suav teb mills, kev tsim cov khoom lag luam uas tsav tsheb sib tw. Rau cov kev xav tau feem ntau, Q345 lub zog ua kom dhau-} engine engineດ, txuas ntxiv kho cov phiaj xwm kev ua haujlwm.
Lus nug: Dab tsi yog qhov tseem ceeb tshaj plaws ntawm tus qauv ipe Q345 h nqaj?
Teb: IPE (European Kuv {{{{{leth gee l345 ci ntsa iab li IPE li IPE (806 hli Flange Thickness) muaj ntau rau lub teeb. Qhov ntau thiab tsawg ipe 160 (160 hli web qhov siab, 82mm Flange Dav, 5 hli Web Thickness, 8.5mm Flange tuab) rau txhua txhua chaw nyob. Loj ipe 240 (240 hli web qhov siab, 110mm Flange dav, 10.2mm Flange tuab) Suits ua lag luam girders. Cov qauv ntev yog 6M, 9m, thiab 12m, nrog kev cai ntev muaj nyob ntawm tus nqi ntxiv. Cov qauv no sib npaug ntawm lub zog thiab cov khoom siv tau rau IPE's Slim Tsim.
Lus nug: Lub zog ntawm iCE Q345B H Beams piv rau IPE Q235 H Nqaim?
Teb: Q345B muaj tsawg kawg yog los lub zog muaj zog ntawm 345 MPa, siab dua Q235's 235 MPa. Qhov no txhais tau IPE 160 q345B nqaj tuaj yeem txhawb 40 {19% Ntau load dua li IPE 160 Q235 nqaj ntawm tib qho loj. Rau kab ntawv ntawm 8m, ib daim IPE 160 Q345B nqaj Tuam Tshoj ~ 20 Kn, Thaum Q235 ntawm tib qhov loj me tsuas yog tswj hwm ~ 13 kn / m. Q345B tseem muaj qhov qis dua qis - kub tougness, tawm tsam brittle bacture ntawm 0 degree, whereas Q235 yuav dhau los ua tus mob txias. Txawm hais tias muaj zog ntxiv, Q345b tus nqi them yog tsuas yog 10 {-} 15% dhau ntawm Q235, ua rau nws siv tau zoo rau cov ntawv thov hnyav.
Lus nug: Dab tsi siv kev siv ipa q 345 16 mn h tw taws zoo tshaj plaws rau?
Teb: Ipe q 345 16 mn h bars excel hauv nruab nrab kom cov khoom nruab nrab rau kev tsim kho hnyav, xws li cov lag luam thav duab thiab kev lag luam tawm. Lawv cov ntawv IPE profile ua rau lawv zoo tagnrho rau cov phiaj xwm nrog qhov chaw muaj kev txwv, zoo li lub chaw haujlwm mezzanines lossis chav tsev kev txhawb nqa. Lawv tau siv nyob rau hauv cov choj choj txuas ntxiv thiab cov neeg taug kev cov neeg taug kev, muaj kev nce siab thiab muaj zog. Hauv kev siv tshuab, lawv cov khoom siv fab fabricate cov thav ntawv thiab cov kev txhawb nqa convivip. Rau kev ua liaj ua teb zoo ib yam li cov tsev loj loj, ipe Q345 nqaj kev txhawb nqa hnyav nyab FAJ cia thiab MACHINERY. Lawv tus nqi qis thiab kev ua haujlwm siab ua rau lawv ntau yam thoob plaws cov haujlwm.
Lus nug: Cov xwm txheej dab tsi pab txhawb rau "tus nqi qis" ntawm iME Q345 kub- rolled h nqaj?
Teb: Abundant supply of manganese (the key alloy in Q345) keeps raw material costs low compared to high-alloy steels. Suav hlau Mills ua IPE Q345 Beams nyob rau hauv ntau columes, ua tiav kev lag luam ntawm cov nqi ntau lawm. Qhov kub - Rolling cov txheej txheem rau IPE profiles tsis muaj zog {}}} rolling, txo qis kev tsim nuj nqis. Kev sib tw ua lag luam kev sib tw ntawm cov chaw muag khoom ntawm cov nqi, tshwj xeeb tshaj yog rau cov qauv ntau thiab tsawg. Ib qho ntxiv, Q345 cov khoom siv efficiency (me me nqaj rau tib lub load) txo cov nqi yuav khoom ntau, ua cov phiaj xwm kev nqis tes tsawg dua.
Lus nug: Muaj ipe Q345B H Beams siv tau hauv huab cua txias?
Teb: Yog, Q345B yog zoo - ruited rau huab cua txias vim nws cov kev cuam tshuam kub. Nws qhov qis -} Alloy ineoy muaj pes tsawg leeg (mangancese txhim kho tawv) tiv thaiv brittle bacture hauv lub qab mob. Nyob rau hauv cov cheeb tsam txias, ipe Q345b kab teeb yog siv rau lub ru tsev trules thiab load-bear-bearing phab ntsa, uas kub hloov tuaj yeem ua rau muaj zog dua cov hlau. Kom tsim nyog nto kev kho (galvanization) tiv thaiv tus mob khaub thuas, ntub dej uas muaj xeb. Rau cov phiaj xwm nyob rau hauv cov chaw uas txias heev (piv txwv li, Northern Tuam Tshoj, Q345B tuaj yeem hloov kho rau cov huab cua txias rau feem ntau.
Lus nug: Qhov hnyav ntawm IPE Q345 H Beams piv rau lwm tus H nqaj profiles (piv txwv li flange)?
Teb: IPE Q345 Beams yog sib dua tshaj li dav} flange h nqaj ntawm tib lub webs ntawm tib lub webs ntawm lawv lub simmer flanges. IPE 160 Q345 Nqaj Hnyav ~ 17.2 kg / m, thaum dav} flge 160 q345 nqaj / m. Lub cev hnyav dua txo cov nqi thauj mus los thiab muaj cov qoob loo uas muaj cov qoob loo me me). Txawm hais tias tau sib dua, IPE Q345 lub zog siab txhais tau tias nws yuam kev thauj khoom muaj peev xwm ntawm hnyav heev {} flange Q235 nqaj. Rau cov phiaj xwm uas qhov hnyav yog qhov tseem ceeb (piv txwv li, cov txheej txheem nce), ipne Q345 lub teeb yuag thiab lub zog siab yog qhov zoo tshaj plaws. Txawm li cas los xij, dav {{21} Cov kab ci flange yog qhov zoo dua rau cov khoom siv torsion hnyav, thaum lub sij hawm ipne extrels ntawm khoov.
Lus nug: Dab tsi vuam txoj kev yog qhov zoo rau iCE q 345 16 mn h tws?
Teb: Tiv thaiv cov hlau arc vuam (smaw, "Lo tau siv rau ntawm -} Alloy muaj pes tsawg leeg thiab yog portable rau cov chaw tsim khoom. Roj Hlau Hlau Arc Vuam (Gmaw, "Mig Vuam") yog qhov nyiam rau kev fab ntaub ceev, kev ntxuav cov ntaub ntawv ceev ceev rau IPE's Slim Flanges. Flux - cored arc vuam (FCAW) yog qhov tsim nyog rau cov phiaj xwm sab nraum zoov, piv txwv li, IPE 240). Submerged Arc Vuam (pom) yog siv rau ntev, ncaj vetds hauv high - heev vol ntau lawm. Q345 cov ntsiab lus ntawm cov pa roj carbon tsawg txhais tau tias tsis muaj ua ntej kub} kub}} cua sov yog xav tau rau ntu nyob rau hauv 20 hli tuab, yooj yim vuam.
Lus nug: Vim li cas 16mn tseem hais txog kev ua ke Q345 rau IPE H Beams?
Teb: 16mn yog cov kev tsim qauv tsoos rau qhov no tsawg- alloy}}}}}}}}} Lub zog "hauv Suav). Ntau cov tub rog kev lag luam thiab cov qauv qub tseem siv 16mn, tsim txuas ntxiv hauv kev ua lag luam. Nws qhia meej meej qhia cov ntaub ntawv muaj pes tsawg leeg (~ 1% carbon, ~ 1% manganese), uas cov neeg yuav khoom thiab cov kws lag luam nrhiav tau txiaj ntsig zoo rau kev nkag siab wardability thiab kev ua tau zoo. Hauv qee thaj tsam (piv txwv li, cov lus teb chaws Asia sab hnub tuaj Technically, 16mn thiab Q345 yog qhov zoo tib yam, yog li cov ntawv siv dual txwv tsis txhob tsis meej pem thiab tswj kev paub meej pem.
Lus nug: Cov kev kuaj xyuas zoo li cas yuav tsum tau ua kom ntseeg tau tias tsawg- tus nqi ipaE Q345 Beams ntsib tus qauv?
Teb: Ua ntej, txheeb xyuas cov ntawv pov thawj zeb xeem (MTC) kom paub meej tias cov txiaj ntsig zoo (ntau dua lossis sib npaug zos) thiab cov ntsiab lus manganese (manganese cov ntsiab lus ~ 1%). Txheeb xyuas qhov tseeb (lub vas sab, flange dav) nrog daim kab xev ntsuas)}} ihing profiles yuav tsum tau ntsib en 10034. Tshuaj xyuas saum npoo rau xeb, tawg, lossis tsis sib xws; Min xeb me me yog tau txais, tab sis cov kab nrib pleb qhia tsis meej. Ua ib tug bend xeem rau ntawm daim qauv piv txwv kom paub meej tias ductility (tsis muaj kev tawg thaum Bent 180 Degree). Rau Q345B, Kev thov kev ntsuas cov ntawv ceeb toom kom ntseeg tau tias nws ua tau raws 27J ntawm 20 degree. Zam kev twv txiaj nrog cov tawv nqaij tsis sib haum lossis cov npoo ntxhib, vim cov teeb liab kev tsim khoom tsis zoo.
Lus nug: Yuav ua li cas load {-}} Cov kabmob muaj peev xwm ntawm ipe Q345 H Beams hloov nrog Luv ntev?
Teb: Load {{{- Cov kabmob muaj peev xwm nce ntxiv li ntev ntev nce, raws li cov cai lij choj square txoj cai rau kev siv hluav taws xob. Ib qho IPE 160 Q345 nqaj tuaj yeem txhawb nqa ~ 25 kn / m tshaj li 5m ntev, tab sis tsuas yog ~ 10 kn / m dua 10m ncua. Ntxiv rau yav tom qab bracing (piv txwv li, nrog cov hlau sib txuas hlau) tuaj yeem nce peev muaj peev xwm los ntawm 15 {{20% los ntawm kev txo cov deflection. Xav tau ntau dua (12m +), engineers yuav qhia kom meej dua IPE loj dua (piv txwv li, IPE 200 txawm tias muaj peev xwm. Sib txuas ob qho IPE ci sab --}}}}- Cov nra hnyav. Yuav tsum suav cov peev xwm raws li qhov ntev thiab thauj khoom (Uniform vs. point load) kom tsis txhob nyob rau hauv-sizing.
Lus nug: Yog iME Q345 H cis haum rau kev tsim kho nyob hauv tsev, thiab vim li cas?
Teb: Yog lawm, IPE Q345 teeb pom kev zoo rau cov phiaj xwm chaw nyob, tshwj xeeb tshaj yog cov tsev tshiab nrog qhib cov phiaj xwm hauv pem teb. Lawv lub zog siab tso cai ntev ntev (8 {{{}}} 10m) tsis muaj chaw nyob sab hauv, ua kom muaj nyob sab hauv. Slime IPE Profile haum yooj yim yooj yim hauv qab nthab kab noj hniav, zam kev loj cov kab ntawm cov kab teeb uas txo lub taub hau. Lawv tau sib dua dua Q235 ci ntawm tib lub peev xwm, ua kev teeb tsa tau yooj yim rau cov neeg ua haujlwm me. Lawv tus nqi qis yog txaus rau pob nyiaj siv - Cov tswv yim zoo nrog cov ntoo lossis pob zeb ua ke rau kev sib xyaw. Rau ob - dab neeg lub tsev, ipe 140-180 q34 15 ci ci ua haujlwm rau cov kab ke hauv av, thaum iphone yog siv rau cov kab ke.
Lus nug: Yuav ua li cas cov kev kho hauv cov kev kho kom tsawg- tus nqi ipe Q345 nqaj los tiv thaiv corrosion?
Teb: Anti {-} xeb pleev xim yog tus nqi tshaj plaws {2} - 5 xyoo, zoo tagnrho rau kev siv sab hauv. Kub {{9- dip galvanization ntxiv 10 {{14% rau cov xeb tus nqi, zoo meej rau cov ntawv thov sab nraum zoov zoo li lub sam thiaj li phorches. Zinc-Riches Primers yog qhov nruab nrab hauv av, muab kev tiv thaiv zoo dua li cov xim ntawm tus nqi qis dua galvanization. Rau cov chaw ntub dej (piv txwv li, hauv qab daus), epoxy txheej tiv thaiv tiv thaiv noo thiab pwm. Qee tus neeg xa khoom muab Daim Ntawv Kho Mob IPE Q345 Beams ntawm qhov them tsawg dua, sib txuas ua ke nrog kev tiv thaiv corrosion.
Lus nug: Kuv yuav ua li ipa cia q345b h cis ua hauv seismic-} ib qho chaw?
Teb: Q345B lub zog siab thiab tawv ua nws haum rau cov chaw seismic. Nws lub ductility tso cai rau nws nqus seismic lub zog tsis muaj kev tawg, txo kev puas tsuaj. Hauv cov seismic tsim, ipe Q345B twv yog siv nyob rau hauv ib lub sij hawm-}} Cov thav duab sib koom ua ke tso cai tswj kev deformation. Lawv cov slim profile ua rau nws yooj yim ntxiv bracing (piv txwv li, nrog steel raws ntaub) uas txhim kho tom qab muaj zog. Piv rau Q235, Q345b yuav tsum tau cov nqaj me me, txo cov txheej txheem hnyav thiab cov rog uas muaj qhov hnyav tag nrho. Tom qab cov cim seismes hauv zos (piv txwv li, GB 50011 hauv Suav teb) kom paub IPE Q345B cov qauv ntsib cov qauv kev nyab xeeb rau av qeeg.
Lus nug: Dab tsi yog qhov kev txiav txim tsawg kawg nkaus (MOQ) rau tsawg {{tus nqi ipa cia i345 h nqaj, thiab nws cuam tshuam li cas?
Teb: Cov khoom lag luam feem ntau yuav tsum muaj moq ntawm 1-2 metric tons rau tus qauv IPE Q345 qhov ntau thiab 10000), uas tau tswj hwm rau cov phiaj xwm me. Rau kev cai ntev lossis loj dua qhov ntau (ipa220+}), MOQ yuav nce mus rau 5 Metric tons. Xaj saum toj no moq feem ntau tsim nyog rau ntim cov nyiaj cheb muaj peev xwm txuag tau 5-8%, thiab} metric tons cawm 10-12%. Cov xaj xaj me (hauv qab MOQ) yuav tshwm sim tau 10% nqi, tab sis ntau tus neeg muag khoom zam qhov no rau cov neeg siv khoom ib txwm muaj. Yuav cov qauv ntev (6M, 9m) tsis yog kev cai lij choj kuj zam cov moQ txwv thiab ua kom cov nqi qis.
Lus nug: Q345b sib txawv li cas los ntawm Q345C rau IPE H nqajs, thiab uas yog qhov zoo dua rau cov dej num tsawg {2} tus nqi nqi?
Teb: Q345B yuav tsum tau xeem 12 degree, Thaum Q345C yuav tsum tau ntawm 0 degree, muab zoo dua qis dua qis- kub. Q345C yog 15 {{- 20% kim dua Q345B vim kev ua si ntsuas thiab tsim qauv. For most low-price projects in mild to cool climates, Q345B is sufficient and more cost-effective. Q345C tsuas yog tsim nyog rau cov cheeb tsam txias heev (-10℃mus 0 degree) lossis cov phiaj xwm nrog kev cuam tshuam siab loads (piv txwv li, can, kev lag luam cranes). Txij li Q345B tau raws li qhov xav tau ntawm 80% ntawm cov phiaj xwm kev tsim kho, nws yog qhov kev xaiv qis qis rau IPE h nqaj.
Lus nug: Tau ipa q 345 16 mn h tws yuav siv los hloov cov kab ntoo ntoo hauv cov tsev ua liaj ua teb?
Teb: Yog, ipne Q345 teeb yog qhov hloov cov kab teeb ntoo hauv barns, cov tsev ntsuab, thiab ua liaj ua teb. Lawv muaj zog dua ntoo, txhawb nqa cov nra hnyav xws li cov quav nyab thiab cov tshuab ua liaj ua teb yam tsis muaj WLEKING. Tsis zoo li ntoo, lawv tau tag thiab lwj - tiv taus, txo cov nqi kho. Lawv cov ntawv theej tawm IPE haum rau cov qauv ntoo uas twb muaj lawm, ua cov retrofits yooj yim. Lawv kawg 50+}} xyoo, piv rau 20 - 30 xyoo rau cov ntoo, muab tau zoo dua {} lub peev txheej. Txawm tias muaj tus nqi siab dua li cov ntoo, Q345 lub durability thiab qis txij nkawm ua rau nws tau them nqi sijhawm.
Lus nug: Dab tsi yog cov hmoov txhuas rau tsawg {{0} tus nqi ipa cia i345 h cis, thiab yuav ua li cas tuaj yeem yuav nws ceev?
Teb: Txheem IPE Q345 muaj tsawg tus txhuas lub sijhawm ntawm 7 - 10 hnub, raws li mills khaws lawv hauv Tshuag. Kev cai ntev lossis ntau thiab tsawg noj 14-21 hnub. Thaum lub caij nyoog ua hauj lwm siv sijhawm (Lub Peb Hlis-Lub Xya Hli), txhuas lub sijhawm yuav txuas ntxiv rau 21-28 hnub. Cov neeg yuav khoom tuaj yeem ua rau tus me nyuam ua kom nrawm dua los ntawm kev txiav txim cov qauv ntau li kev cai, raws li lawv tau npaj txhij muaj. Xaiv cov chaw muag khoom hauv zos txo lub sijhawm thauj mus los (2-3 hnub vs. 5-7 hnub rau cov mills deb). Them rau kev nrawm nrawm (A 5-10% hwm tau) txiav lub sijhawm txhuas los ntawm 3-5 hnub. Npaj cov xaj 4-6 lub lis piam ua ntej cov kab teeb ua ntej tuaj txog thaum xav tau, zam kev siv qeeb.
Lus nug: Kuv yuav ua li ipa cia q345 h Bets piv rau Up Rev raws (lwm qhov European profile) raws li tus nqi thiab kev ua tau zoo?
Teb: IPE Q345 Beams yog qhov kim dua me dua li Upn channel ntawm qhov siab qub (~ 10 {{{{{{{4% nws muaj peev xwm zoo dua. Upn channel yog qhov pheej yig dua rau cov luag haujlwm theem nrab zoo li bracing, thaum ipa}}- cov kabmob ntu. Ib qho IPE 160 Q345 nqaj nqi ~ $ 500 / metric tuj, vs. ~ $ 450 / metric tuj rau lub UP 160 Q345 channel. Rau cov tsiaj txhu tseem ceeb, IPE kab teeb yuav tsum muaj dua cov ntawv tsawg dua li channel, offsetting tus nqi sib txawv. Rau lub teeb txhawb, UP channel yog pheej yig dua, tab sis IPE kab teeb yog ntau ntxiv rau kev sib xyaw {18} Gration Wrougts. Ob qho tib si yog cov khoom lag luam tsawg, tab sis lawv cov kev siv vam khom rau kev thauj khoom.
Lus nug: Vim li cas kub {- rolled ipe Q345 ci ci dua li txias- rolled sawv rov los?
Teb: Hot-rolling uses less energy than cold-rolling (no need for pre-annealing or multiple rolling passes), reducing production costs. Qhov kub - Rolling cov txheej txheem nrawm dua, tso cai rau cov kab teeb ib teev, txo cov nqi zog thiab khoom siv. Kub - Rhawv kab teeb ci tau xoob qhov ntev ntev tsis muaj txias dua li txias. Txias - Raj teeb yuav tsum tau ua ntxiv (piv txwv, tempering) kom ua tiav lub zog, ntxiv rau cov nqi. Txij li Q345 lub zog yog los ntawm aloying (tsis yog khaub thuas txias), kub}}}}}}}}}}} tus txheej txheem pheej yig rau IPE profiles.
