Vuam ntawmQ500NH Wights HlauYuav tsum muaj kev txiav txim siab tshwj xeeb kom tswj hwm nws cov khoom lag luam tsis kam thiab cov khoom siv tshuab. Hauv qab no yog cov tseev kom tseem ceeb thiab cov kev pom zoo rau cov txheej txheem vuam:
1. Kev Npaj Ua Ntej
Cov Khoom Siv Ntawv Pov Thawj: Kom cov hlau pib thiab muab tub lim hlau ua rawsGB / T 4171(Suav Huab Cua Hlau Txheem) lossis sib npaug.
Kev Kho Mob Preheat:
Preheat rau100-150 ° C(Ua raws li cov tuab tuab) kom tsis txhob muaj hydrogen-inducts cracking (hic).
For thick plates (>25mm), Preheat siab dua (150-200 ° C) yuav xav tau.
Kev sib koom ua: SivGroove Welds(V lossis U-hom) rau tag nrho cov kev nkag, zam kev nkag mus ntse uas yuav ua rau muaj dej noo thiab ua kom ruaj khov.
2. Vuam Txoj Kev & Cov Khoom Siv Hluav Taws Xob
Cov txheej txheem pom zoo:
Cov thaiv hlau arc vuam (smaw)- E5018-w (tsawg-hydrogen electrodes).
Roj Hlau Hlau Arc Vuam (Gmaw / Mig)- Er70s-6 xaim nrog 75% ar + 25}} }₂ shielding roj.
Flux-cored arc vuam (FCaw)- E71T-1C JH4 (Weathering-qib flux-core hlau).
Muab Too Hlau Xaiv Kev Xaiv Hlau:
Phim lossiskev sib tshoojLub zog (piv txwv li,E550nhMuab tub lim rau Q500NH luj hlau).
Ua kom ntseeg tau cov hlauCU, CR, NIkom muaj kev tiv thaiv huab cua.
3. VUAM TSHUAJ & Kev Tswj Xyuas
Cov tswv yim tshav kub: Txwv rau15-25 KJ / CMTxhawm rau kom tsis txhob softening ntau dhau hauv thaj chaw kub-cuam tshuam (hz).
Sib txuam Kub: Khaws hauv qab no250 ° CTxhawm rau tiv thaiv cov nplej coarsening.
Tom qab Weld qeeb: Cia maj mam txias kom txo qis cov kev ntxhov siab.
4. Post-Weld Kho
Ntxuav: Tshem tawm slag thiab sab ci los tiv thaiv kev tiv thaiv creevice corrosion.
Corrosion tiv thaiv:
Ua ntaub ntawvHuab Cua-Resistant PrimersNtawm Weld seams yog xav tau.
Zam kom zam cov tshuab xim uas cuab yaiab noo (siv cov tsho tiv no ua pa).
Kev kuaj xyuas:
Zas cenetant (PT) lossis Ultrasonic (UT)Kev xeem rau cov tsiaj tseem ceeb.
Kos rautsis muaj fusion, kab nrib pleb, lossis porosity.
5. Cov kev txiav txim siab tshwj xeeb rau kev ua yeeb yaj kiab
Weld Seam Corrosion: Lub haz thiab weld hlau yuav xub pib nrawm dua li cov hlau hauv paus. Ib qho kev sib dhos patina yuav ua rau lub sijhawm, tab sisSealing WeldsNrog rau huab cua-tiv thaiv cov txheej muaj peev xwm pab tau.
Zam kev tsis huv: Tiv thaiv cov roj, roj, lossis chloride seem (ib txwm muaj nyob rau thaj chaw ntug hiav txwv) thaum vuam.
