1. Vuam (thawj txoj kev rau thauj khoom - bearing sib txuas)
Pom zoo vuam cov txheej txheem & teeb tsa
Cov txheej txheem ntau:
GMAW (MIG / Mag Vuam): Zoo tagnrho rau nruab nrab - rau -} tuab tshaj lossis sib npaug los yog sib npaug rau 6 hli). Kev siv80% ar + 20}% co₂ tiv thaiv rojkom txo porosity thiab kom ntseeg tau tias arcs ruaj khov.
Smig (lo vuam): Suitable for on-site repairs or thick sections (>12 hli). Xaiv cov electrodes nrog cov ntsiab lus hydrogen tsawg (piv txwv li, e7018-g cu) kom tsis txhob tawg khaub thuas.
FCAW (Flux -} cored arc vuam): Zoo rau kev siv sab nraum zoov (cua - ionistant flux) thiab tuab daim hlau. Xaiv Flux - Cored cov xov hlau nrog cov huab cua ntxiv (piv txwv li, AWS E71T-8-G CU).
Kev xav tseem ceeb rau vuam
Muab tub lim hlau sib phim: SivWeathering -}} Cov Fillers Qib(piv txwv li, en 1600 g 3si1 (cu) rau mews, e7018 {...} pa weld cheeb tsam tiv thaiv nrawm dua li cov khoom siv niam txiv.
Preheating & cuam tshuam qhov kub:
Rau cov phiaj tsawg dua lossis sib npaug rau 12 hli thiab ambient temps loj dua los yog sib npaug rau 5 degree: tsis muaj preheating preheating.
For plates >12 hli lossis temps<0°C: Preheat to 80–120°C to reduce hydrogen-induced cracking in the heat-affected zone (HAZ).
Cia kev ntsuas kub hauv qab 250 qib kom tsis txhob muaj kev zam kev ua kom tsis muaj zog (uas tsis muaj zog nruj).
Post -} Weld Kho:
Grind Weld Beads kom tshem tau cov plaub ntug lossis slag {} Qhov no pab rau WELD cheeb tsam PATINA.
Rau cov chaw hnyav (ntug dej hiav txwv), thov cov khaub ncaws hlau ua kom zoo rau cov chaw weld kom nrawm pata tsim.
2. Neeg kho tshuab nrawm nrawm (rau qhov tsis sib xws lossis tsis {{1} Rub {{2 2}} cov kabmob sib txuas)
Pom zoo fasteners & installation
Fastener hom:
Kub - dip galvanized siab high {{}} lub zog bolts: Rau thauj khoom - cov kabmob sib txuas (piv txwv li, ISO 898-1 chav kawm 8.8 lossis 10.9). Galvanization resards corrosion, tab sis xyuas kom cov khoom siv ntsia hlau (piv txwv li, cov hlau alloy) tuaj yeem lis cov khoom qub li S355j0wp.
Stainless Hlau Bolts (316 Qib): Rau cov ntawv thov zoo nkauj lossis dej hiav txwv . 316}}} Tus kab mob ntsev ntau dua li S355J0WP).
Tus kheej - tapping screws (huab cua - tsis kam coated): Rau nyias s355j0wep nplooj ntawv (tsawg dua lossis sib npaug nrog 3 hli), piv txwv li, txuas cladding rau ntas. Xaiv scread nrog ib zinc - luminium txheej (zom} {}}}} lub xeb tsis kam.
Kev txiav txim siab tseem ceeb rau kev nrawm
Zam kom tsis txhob muaj galvanic corrosion: Tsis txhob siv cov pa roj carbon steel tawv taub hau -}} Lawv yuav tau xeb nrawm dua li s3555555555j0wp thiab yuav ua kom nrawm ntawm cov hlau ib ncig ntawm lub qhov. Yeej ib txwm khub nrog galvanized lossis stainless hlau fasteners.
Ua ntej - drilling: For thick plates (>6MM), ua ntej {{{1} bekger qhov (piv txwv li me ntsis) los tiv thaiv tus hlau los ntawm tawg thaum teeb lub sijhawm teeb tsa.
Sealing (yeem): Rau cov ntawv thov sab nraum zoov, thov cov huab cua - Resistant freadant) nyob ib ncig ntawm gread {}} Qhov no txo cov cevice corrosion.
3. Lwm txoj kev txuas ntxiv (tshwj xeeb scenarios)
Riveting: Tsis tshua siv hnub no, tab sis siv tau rau cov cuab yeej cuab tam hnub no - style qauv lossis qhov chaw vuam / bolting yog impractical. Kev sivHuab Cua Hlau Rivets(txuam nrog S355j0WP cov ntawv sib xyaw) kom tswj hwm corrosion.
Adhesive Bonding: Rau cov tsis {{0} Gration} bearing - Cov kabmob hniav txuas ntxiv (piv txwv, mounting cov paib rau S355J0wP Facades). Kev sivEpoxy - Raws li cov nplaum nplaumTsim rau hlau (piv txwv li, 2 {{{}}}}}}} sib xyaw epoxy nrog corrosion-resistant additives). Nco ntsoov tias cov hlau nto yog ntxuav (degreehreashu, qhuav) rau muaj zog adhesion.
