Pab Pawg 1
Lo lus nug: Qhov sib txawv tseem ceeb ntawm kev sib npaug thiab lub kaum ntse ntse sib luag?
Teb: sib npaug kaum steel muaj tib yam- ntev ob txhais ceg (piv txwv li 50 × 5 hli), faib cov qauv zoo li cov qauv tracings. Unequal steel tau txawv- ntev ceg (piv txwv li, 75 × 50 hli), suav nrog asymmetric loads zoo li sloymmetric cov khoom lag luam. Qis - lub zog qib (Q235 / A36) Siv cov khoom sib npaug rau lub teeb symmetric; Siab dua - lub zog sawv daws (Q345 / S275JR) Siv cov khoom lag luam uas tsis sib xws rau cov khoom siv asymmetric hnyav. Ob qho tib si ua haujlwm nrog txhua qib tsib, tab sis txhais ceg tsim kev txiav txim siab lawv cov khoom siv thauj khoom, kom paub cov txheej txheem kev ua tau zoo. Cov khoom sib npaug sib npaug haum fim kev ruaj khov, thaum tsis sib xws nrog kev ntxhov siab tsis sib luag.
Lo lus nug: Vim li cas Q235 ntau yam rau kev tsim kho lub teeb?
Teb: Q235 tau siv dav hauv lub teeb kev tsim kho rau nws qhov kev ua tau zoo thiab tus nqi qis. Nws tau 235 MPA tawm lub zog tsim nyog rau qis - nruab nrab chav tsev zoo li cov ntawv Rhiav me me lossis cov lawj. Nws muaj cov qauv ua zoo, ua kom txiav, khoov, thiab vuam yooj yim rau ntawm- chaw kho vaj tse. Nws yog pheej yig dua Q345 / S275JR, txo tus nqi rau cov nyiaj siv nyiaj txiag. Q235 yog Mass -}}}}} tsim tawm, yog li muaj sib npaug / tsis sib xws tau yooj yim rau cov nrawm nrawm. Seb puas yog cov neeg ua yeeb yaj kiab txhawb nqa lossis lub qhov rooj thav duab qhov cuab lub zog, Q235 txoj kev ntseeg tau thiab pheej yig ua rau nws xaiv qhov zoo.
Lus Nug: Cas s235jr txawv li A36 hauv European kev tsim kho?
Teb: S235JR (En cov qauv) haum txoj kev European zoo dua A36 (peb tus qauv). S235JR ntsib EN 10025 {14- 2, ua raws li cov lej hauv zos thiab cov ntawv pov thawj CE. Nws cov txiaj ntsig lub zog (≈235 MPA) yog ze rau A36's (≈248 MPa), tab sis nws muaj kev sib luag ntawm Weldability, sib txuam European nyiam rau Welded kev sib txuas. A36 xav tau kev ntsuas ntxiv kom tau raws li cov qauv European, ua rau qeeb. S235JR muaj qhov qis dua-kub nyuaj (ntau dua los yog sib npaug rau 27 degree), foob rau European txias huab cua kom tsis txhob muaj qhov tsis ua tiav. Rau cov tub sab Europe, S235JR cov txheej txheem sib txawv thiab huab cua zoo hloov ua nws ntau yam.
Lo lus nug: Yam los xaiv Q345 Unequar lub kaum steel rau hnyav muaj thav ntawv?
Teb: Xaiv Q345 Unequar lub kaum steel los ntawm kev tsom mus rau thauj khoom, ib puag ncig, ua, cov qauv, thiab tus nqi. Ua ntej, tshaj tawm cov khoom siv Asymmetric-} nws 34} mpa cia lub zog (piv txwv li 100 hli) kov cov tshuab kev ntxhov siab hnyav. Thib ob, ntxiv ov - corrosion kev kho (kub}}} pa galvanizing) rau thaj chaw noo noo) rau thaj chaw noo noo) rau thaj chaw noo, raws li cov tawv nqaij tawv. Qhov thib peb, kuaj xyuas cov txheej txheem - Nyeem cov ceg tsis sib xws tuaj yeem yog qhov tsis sib xws (Q345 tau qis dua qhov qis dua Q235). Thib plaub, soj ntsuam GB / T 1591 ua raws cai rau muaj pes tsawg leeg (piv txwv li, mn 1.00- 1.60%) thiab lub zog. Qhov thib tsib, tshuav nqi them tus nqi-Q345 yog qhov sib luag, tab sis nws lub zog tso cai rau cov khoom lag luam me, txuag chaw thiab them nqi.
Lus Nug: Yuav ua li cas thiaj li tuav S275JR / A36 L Profiles los tiv thaiv kom tsis txhob muaj xeb hauv kev cia?
Teb: ceev S275jr / A36 L Profiles los ntawm kev khaws cia hauv qhov chaw qhuav, zoo} pat -}} ntev ntev. Npog sab nraum zoov nrog UV - istant waterproof waterproof tarps thiab kev tawm tsam cua. Yav tom ntej ntawm 10cm + ntoo / steel txhawb kom tsis txhob muaj av noo noo. Cais sib npaug / cov cim tsis sib xws thiab cov cim me me kom tiv thaiv kev sib xyaw thiab kev saib xyuas kom zoo thiab kho kom zoo (}} xeb roj rau S275JR). Siv cov anti {- xeb roj rau ntev- sij hawm cia, tsom rau ceg ceg. Tshawb xyuas txhua lub limtiam {{19} Tshem tawm xeb nrog cov xaim txhuam thiab cov roj pupply yog tias cov roj tshwm. Cov kauj ruam no khaws cov profiles rust - dawb kom txog thaum kev teeb tsa.
Pawg 2
Lo lus nug: Kev siv ntawm Q235 / S235JR Unequaal lub kaum steel nyob hauv ru tsev?
Teb: Q235 / S235JR Unequal Unequal Lub kaum steel muaj cov ntsiab lus siv nyob rau hauv cov tsev lag luam. Nws txhawb nqa Sloped rafters {{}} tsis sib xws ceg (piv txwv li ntawm 40 × 5 hli), faib cov daus, daus) rau phab ntsa. Nws txhawb nqa lub ru tsev volels / hnub ci panels, haum ruaj khov rau hauv toj los tuav cov khoom siv hnyav. Nws thav ntawv eauves -} ntev dua tiv thaiv cov npoo ntawm cov dej, thaum tus luv luv txuas rau lub ru tsev lawj. Nws ntxiv dag zog hip retections, sib cav nrog cov ces kaum los tiv thaiv kom tsis muaj zog. Q235 yog tus nqi -} Siv tau ua haujlwm hauv zos; S235JR haum cov dej num European. Ob qho tib si muaj 235 MPA tawm lub zog, tuav lub tsev nyob ruaj ruaj ruaj ruaj khov.
Nqe Lus Nug: Ua li cas S275JR ua yeeb yam VS Q345 nyob rau hauv seismic- tsis muaj cheeb tsam?
Teb: S275JR thiab Q345 L Profiles ua haujlwm txawv seismic. S275JR (275 MPA tawm tswv yim) muaj kev sib zog zoo heev (ntau dua lossis sib npaug nrog cov qauv seismic zoo li bracings / guardrails kom tsis txhob tawg. Q345 (345 MPa tawm tswv yim) muaj zog dua, Suing lub ntsiab lus tseem ceeb (kab ntawv) kom tiv thaiv loj seismic tsis muaj kev puas tsuaj. S275JR muaj kev sib koom ua ke weldability zoo dua rau cov rooj sib tham uas muaj zog; Q345 yuav xav tau preheating thaum vuam. Nyob rau hauv ib nrab seismic zones, S275JR sib npaug yuav raug nqi thiab hloov tau nqi; Nyob rau hauv cov cheeb tsam pheej hmoo siab, Q345 lub zog yog nyiam. Ob qho tib si ua raws li cov qauv hauv cheeb tsam (S275JR en, Q345 GB) rau seismic ua raws.
Lus Nug: Qhov zoo ntawm A36 sib npaug lub kaum steel rau prefabricated thav ntawv?
Teb: A36 sib npaug kaum sab xis steel pab Prefabricated thav ntawv hauv ntau txoj kev. Nws cov khoom ntiag tug (248 MPA tawm los, 20% elongation) kom ntseeg tau tias muaj kev ua haujlwm rau cov khoom sib dhos. Nws muaj qhov zoo weldability, tso cai rau lub Hoobkas vuam ntawm cov ncej ncej kom txo tau ntawm- chaw ua haujlwm. Nws kub {{{}}} rolled tiav muab cov qhov ntev kawg (piv txwv li 50 × 5 hli), ua kom zoo tshaj plaws rau- chaw sib haum. Nws muaj dav nyob rau hauv cov qauv ntau thiab tsawg, ua kom sai sai sourcing rau cov sij hawm ua ntej. Nws sib npaug muaj zog thiab tus nqi - Tus nqi pheej yig dua S275JR / Q345, tab sis muaj zog txaus rau thaj chaw / ua lag luam prefabricated thav ntawv. Nws yooj yim ua ntej nrog kev ntseeg tau thiab ua tau zoo.
Lus Nug: Yuav ua li cas paub qhov txawv Q235 thiab Q345 thiab Q345 L profiles ntawm -?
Teb: Muab qhov txawv Q235 thiab Q345 thiab Q345 L Profiles nrog yooj yim ntawm-}} huab txheej. Txheeb xyuas cov ntawv lo / cov ntawv pov thawj {{4 {}}} Q235 muaj GB / T 1500 VN345 muaj GB / T 1545 vs 345 MPa). Saib cov xim nto- Q235 yog Grey Teeb, Q345 (Xav tau ib sab {- pev sib piv). Khoov piec ntawv - q235 khoov +℃tsis muaj kab nrib; Q345 tej zaum yuav txhav lossis ua kom pom me me tawg. Coj mus rhaub nrog rab rauj - Q235 ua rau lub suab npub, Q345 ib qho meej dua, rov ua ib qho. Kuaj xyuas qhov ntev - Q345 muaj stricter ceg tuab ua, nrog tsawg sib txawv thaum ntsuas. Muab 2-3 txoj kev (piv txwv li, cov ntawv sau + khoov yog) rau qhov raug.
Lus Nug: Vim li cas thiaj li xaiv S235jr / A36 Unequatal lub kaum steel rau facade txuas?
Teb: S235JR / A36 Unequatal lub kaum steel yog nyiam rau facade txuas vim nws tus qauv. Facades muaj cov khoom tsis sib xws - Cov ceg tsis sib xws Sib npaug sib luag steel tsis tuaj yeem ua kom haum nrog asymmetric facade loads, kev pheej hmoo ruaj khov. S235JR (European Facades) thiab A36 (US cov haujlwm) muaj qhov txaus (235-248 MPa) los tuav lub ntsej muag hnyav. Lawv cov ceg tsis sib xws haum cov kis ntawm faadeade thiab qauv, txuag chaw. Ntev txhais ceg muab ntau thaj chaw thaj chaw ntau rau bolts / vuam, kom muaj zog sib txuas tau sib txuas dua li vaj huam sib luag. Nws ua kom haum nrog Facade Load xav tau, ua rau nws xaiv zoo.
Pab pawg 3
Lus Nug: Yuav ua li cas Q345 sib npaug lub kaum sab xis Hlau ceg tuab cuam tshuam kev lag luam muaj peev xwm?
Teb: Q345 sib npaug kaum steel ceg tuab ncaj qha cuam tshuam kev lag luam platform thauj khoom muaj peev xwm. Thicker ob txhais ceg (piv txwv li, 8mm vs 5mm hauv 60 × 60 xyoo} ntu ntawm thaj chaw, kev txhawb nqa axial) tuav ntawm lub cev hnyav / khoom siv. Thicker txhais ceg tsa lub sijhawm ntawm inertia, txhim kho bending tsis kam tiv thaiv sagging hauv platform nqaj. Piv txwv li, 60-× 80 yog muaj 60% kev thauj khoom 30% ntau load dua 60 × 60 × 5mm rau tib lub. Thicker txhais ceg txhim kho lub zog - bolts / welds bolts / welds tuav zoo dua, zam kev sib koom ua ke. Txawm li cas los xij, tuab txhais ceg ntxiv qhov hnyav thiab tus nqi, yog li sib phim tuab rau thauj: 8-10 hli rau cov tshuab ntim hnyav, 5-6mm rau lub teeb cia. Kom zoo tuab kom muaj kev nyab xeeb thiab kev ua tau zoo.
Lus Nug: Kev kho cov kev kho nyob saum npoo rau S275JR Lriles hauv kev tsim kho hiav txwv?
Teb: S275JR L Cov Profiles hauv hiav txwv kev tsim kho uas xav tau cov kev kho cov kev kho. Kub - dip galvanizing (85 {}}}}}}}}}}}}}}}}}}}}}}}}} {- 20 xyoo. Epoxy Resin Txheej tsim cov zaj duab xis ntom ntom nti, adherering zoo thiab haum cov ntug dej hiav txwv (xim xim). Polyurethane Topcoat (dhau epoxy) ntxiv UV tiv taus, tiv thaiv kev tawg los ntawm lub hnub ci / cua. Hmoov txheej ua haujlwm rau tsis {10} bread {}} bearing}} {tiv taus tiav ntawm cov chaw thov electrostatic. Anti-xeb roj yog lub sijhawm pheej yig rau cov qauv pheej yig rau cov qauv ib ntus, kev thov rov ua dua txhua txhua 3 3-6 lub hlis. Cov kev kho mob lub hom phiaj ntug dej hiav txwv, kom muaj kev pabcuam ntev.
Nqe Lus Nug: Yuav ua li cas xaiv sib npaug / tsis sib xws Q235 / S235JR rau Cov Khoom Siv Warehouse?
Teb: Xaiv Q235 / s235JR Angle Hlau rau Warehouse Shelving raws tus qauv thiab thauj khoom. Rau cov qauv kev muab (cov thawv zoo ib yam), siv cov ceg sib luag (piv txwv li 40 {} Cov profiles sib npaug yog yooj yim sib dhos, sib dhos nrog cov khoom txee. Rau hnyav {{14 - lub luag hauj lwm (xws li, 63 {}) Q235 yog tus nqi- Siv cov chaw khaws khoom hauv zos; S235JR haum cov neeg European (en ua raws). Cov txee siab yuav siv cov khoom sib xws rau lub hauv paus ruaj khov. Sib phim hom thauj khoom / tsim qauv rau cov ntaub ntawv ntev.
Lo lus nug: Cov kev ua yuam kev ib txwm tsis raug thaum txhim kho A36 L Profiles hauv cov choj?
Teb: Zam qhov yuam kev tseem ceeb thaum txhim kho A36 L Profiles hauv cov choj. Tsis txhob quav ntsej load cov txheej txheem-} siv cov khoom sib luag rau cov khoom sib luag ntawm cov khoom siv asymmetric (cov npoo tsis sib haum xeeb) kom tiv thaiv kev ntxhov siab tsis sib xws. Tsis txhob hla kev npaj kev npaj zoo- cov roj huv / roj ua ntej tha xim / galvanizing kom ntseeg tau cov nplaum nplaum thiab tsis muaj xeb. Tsis txhob siv welprot vuam {{6} Ua raws cov khoom siv hluav taws xob kom raug) los tiv thaiv cov pob hluav taws xob tsis muaj zog uas tsis ua raws li kev co. Tsis txhob siv ntau tshaj- khiav load (tsheb, cua) thiab siv cov cua kom zoo (piv txwv li 65 × 6mm rau cov bracings). Tsis txhob quav ntsej thermal expansion- tso me me khoob ntawm cov pob qij txha hauv cov huab cua sov. Cov kauj ruam no ua kom muaj kev nyab xeeb.
Lo lus nug: Q345 vs S275jr: raug nqi thiab kev ua tau zoo rau kev tsim kho hnyav?
Teb: Q345 thiab S275JR txawv nyob rau hauv tus nqi thiab kev ua tau zoo rau kev tsim kho hnyav. Kev ua tau zoo -}}}, Q345 (345 MPa tawm los) muaj zog dua, Syming muaj cov thav duab / cov ntawv sau me me rau cov khoom seem. S275JR (275 MPA tawm tswv yim) tau zoo dua qis -}}}}}} Tus nqi -}}} txawj ntse, Q345 yog pheej yig dua hauv Asia (cov nqi hauv zos ntau, cov nqi qis qis); S275JR yog cov nqi pheej yig dua nyob hauv Tebchaws Europe (Tsis muaj tus nqi ntshuam, ua raws). Ob txoj kev Weld zoo, tab sis S275jr muaj stricter impuration txwv rau cov ntaub ntawv txuas ntxiv. Xaiv Q345 rau cov haujlwm hnyav Asian (tus nqi - txoj kev tshuav} kev tshuav); S275JR rau European Txias Kev Nyab Xeeb Kev Ua Haujlwm (Kev nyuaj).
Pab pawg 4
Nqe Lus Nug: Siv kaum235 Unequar lub kaum steel nyob rau hauv kev ua haujlwm cob qhia?
Teb: Q235 Unequatal lub kaum steel muaj ntau yam kev siv hauv kev ua haujlwm cob qhia. Nws txhawb Rhiav rooj qhov rooj thav duab thav ntawv thav ntawv thav ntawv thav duab- cov ceg tsis sib xws (piv txwv li 32 × 5 hli) muab kev txhawb nqa ntxiv rau cov qhov loj, hnyav. Nws txhawb nqa cov neeg siv nyiaj ua haujlwm tshaj tawm cov nqaj ntoo Crane- lub nqaj ntev txuas rau lub nqaj qab, luv ceg tuav txoj kev tsheb nqaj hlau, tuav crane qhov hnyav. Nws ntas cov khoom siv platform - Cov ntaub ntawv tsis sib xws nrog cov npoo platform, faib cov khoom thauj mus los pab pawg. Nws ntxiv dag zog phab ntsa panels- txuas rau pawg vaj huam sib luag los sib tua cov cuab yeej ntawm cov khoom siv. Nws ua rau cov cuab yeej siv me me |- qhov tsis sib xws tsim fits cuab tam duab, nrog ob txhais ceg ntev npaum li lub hauv paus rau kev ruaj khov. Q235 235 MPa tawm lub zog thiab tus nqi qis ua rau nws zoo tagnrho rau cov haujlwm no.
Lus Nug: A36 A36 Kev Ua Li Cas A36 Unastalal Lub Qub Hlau Ua hauv Vaj Tse?
Cov lus teb: A36 unequal lub kaum steel ua haujlwm zoo hauv tsev ua liaj ua teb rau nws lub zog thiab lub zog. Nws ntas teb ru ru ru ru ru ru ru- Cov ceg tsis sib xws haum cov vov tsev, txhawb cov quav nyab lossis khoom siv quav. Nws txhawb nqa cov tsiaj txhu cov ceg tawv tawv {}} ntev dua txhais ceg txuas ntxiv rau hauv av, luv ceg rau cov panels. Nws txhawb loob bases- muab faib rau qhov hnyav kom hnyav rau lub hauv paus, tiv thaiv kev tog hauv cov av ua ntej. Nws ua rau tsheb laij teb cov qhov rooj ntas {{[} saib lub qhov rooj loj ntawm lub qhov rooj loj thiab tiv taus huab cua puas. A36's 248 MPA cov txiaj ntsig lub zog ntawm cov tshuab ua liaj ua teb ua ke, thiab nws cov weldability tso cai yooj yim sib dhos. Nrog kev kho xim yooj yim, nws tiv thaiv ua teb av noo, kom siv sijhawm ntev.
Lo lus nug: Yam los kuaj xyuas thaum yuav S275JR sib npaug kaum steel rau choj?
Teb: Khij cov ntsiab lus tseem ceeb thaum yuav S275JR sib npaug kaum steel rau choj. Ua ntej, txheeb xyuas Enc 10025- 2 {cia - Ua kom nws raws li European choj tus qauv rau lub zog thiab tawv. Thib ob, khij cov neeg kho tshuab- tawm lub zog ntau dua los yog sib luag, thiab elongation ntau dua los yog sib npaug rau 23% los lis cov khoom siv choj. Thib peb, soj ntsuam thaj tsam zoo - Tsis muaj kab nrib pleb, teev, lossis pits uas tsis muaj zog ntawm kev ntxhov siab. Plaub, paub meej tias muaj qhov raug ntev-ceg ntev / Thickness kam rau hauv EN cov qauv rau cov chaw sib dhos kom raug. Qhov thib tsib, rov xyuas cov ntawv pov thawj kev kuaj xyuas-kom cov tshuaj ntsuam xyuas kom muaj tshuaj lom neeg (piv txwv li ntawm 0.24%, ntau dua lossis sib npaug nrog 0 degree). Cov tshev no ua kom haum S275jr rau cov choj.
Lus Nug: Yuav ua li cas txiav Q345 sib npaug lub kaum sab xis steel rau kev tsim kho yam tsis muaj kev ua kom nws?
Teb: Txiav Q345 sib npaug kaum hlau kom zoo kom tsis txhob muaj kev puas tsuaj. Ua ntej, siv tus txias pom {{2} Nws qeeb qeeb thiab ntse hniav ua kom huv (q345 yog nquag mus rau brittleness yog rhawv). Thib ob, Mark txiav cov kab kom meej meej nrog lub cim thiab square los xyuas kom ncaj ncaj txiav mus raws li kev siv kev xav tau. Third, secure the profile in a vice-prevents movement during cutting, avoiding uneven edges. Plaub, cov hniav txiav hlau (carbide Thib tsib, deb ntxeev tuaj cov ntawv nrog cov ntaub ntawv {{}}} Tshem tawm cov ntse ntse uas tuaj yeem ua rau raug mob lossis cuam tshuam rau vuam. Zam kom tsis txhob oxy-} roj txiav (overheats Q345) kom muaj zog.
Lo lus nug: Vim li cas S235JR sib npaug kaum steel nyiam rau modular kev tsim kho?
Teb: S235JR sib npaug kaum steel yog nyiam rau modular kev tsim kho rau nws licular thiab kev yoog tau. Nws cov khoom siv hluav taws xob tsis zoo (235 MPA tawm los, ntau dua lossis sib npaug ntawm 25% elongation) ua kom txhua qhov chaw ua tau zoo ib yam, piv rau kev sib dhos kom yooj yim. Nws wardability pub lub Hoobkas vuam ntawm modules, txo rau - thaj chaw ua haujlwm thiab nrawm rau kev tsim kho. Nws cov qauv ua raws cai ua kom haum nrog European Modular tsim cov cim, zam kev teeb meem cov teeb meem. Nws sib npaug txhais ceg tsim haum cov qauv zoo li cov ntas (phab ntsa lossis hauv pem teb modules), sib dhos nrog cov qauv qauv. S235JR cov muaj nyob rau hauv cov qauv qhov ntau thiab tsawg (piv txwv li, 40 × 40 hli, 50 × 5 hli) Enables ceev nrawm ntau lawm. Nws cov nyiaj tshuav nqi thiab ua tau zoo, ua rau nws zoo tagnrho rau cov qauv tsim.
Pawg 5
Nqe Lus Nug: Yuav ua li cas Weld Q235 sib npaug lub kaum sab xis Hlau rau cov balconies nyob?
Answer: Weld Q235 equal angle steel for residential balconies by following key steps. First, choose E43 series electrodes (matching Q235's composition) for strong welds. Second, clean the welding area-remove rust, oil, or dirt from leg edges with a wire brush to ensure good fusion. Third, preheat the profile if thickness >12 hli {{{- sov kom 100}}}}}}}}}} {degree los tiv thaiv cov kab mob txias, tab sis cov ntawv tuab uas xav tau preheating). Thib plaub, siv cov weld weld {{} Weld raws tus ceg kaum, nrog Weld loj sib piv, piv txwv li, 5 hli Weld rau 5 hli ob txhais). Qhov thib tsib, txias rau weld maj mam-tsis txhob txias los ntawm kev npog nrog daim pam rwb thaiv tsev, txo kev ntxhov siab. Tshawb xyuas Welds rau cov kab nrib pleb lossis porosity los xyuas kom ncaj ncees kev nyab xeeb.
