Yuav Ua Li Cas Thaum Koj Weld Galvanized Yeeb Nkab
Galvanized steel yeeb nkab nqa cov zinc txheej uas tiv thaiv lub hauv paus hlau los ntawm kev txi. Thaum lub sij hawm welding, zinc nyob ib ncig ntawm qhov sib koom ua ke vaporizes ntawm 907 degree, deb ntawm qhov kub ntawm arc, yog li cov txheej hauv qhov chaw vuam raug puas tsuaj thiab zinc vapor tuaj yeem ua paug rau lub pas dej. Cov txiaj ntsig yog porosity, tsis muaj fusion thiab zinc- oxide pa taws uas ua rau ua pa tsis zoo. Kev nkag siab txog cov teebmeem no yog thawj kauj ruam los tsim lub suab, code-welds txais tau ntawm cov yeeb nkab galvanized.
Cov nyhuv ntawm Zinc rau Weld Properties
Porosity:
zinc vapor daig nyob rau hauv lub solidifying weld hlau cov ntaub ntawv gas hnab uas tsis muaj zog ntawm kev sib koom tes.
Tsis muaj fusion:
zinc residues ntawm cov npoo sib koom ua ke txo qhov ntub dej ntawm lub hauv paus hlau.
Txo lub zog:
porosity thiab inclusions txo cov weld lub peev xwm hauv qab ntawm lub hauv paus yeeb nkab.
Arc instability:
zinc fumes cuam tshuam lub arc, ua kom nkag mus zoo ib yam nyuaj los tswj.
Kev npaj ua ntej vuam
Tshem tawm cov zinc:
zom cov txheej rov qab yam tsawg kawg 25-50 hli los ntawm kev sib koom ua ke ntawm ob lub yeeb nkab thiab qhov chaw haum.
Ntxuav qhov chaw:
tshem tawm cov seem zinc, roj thiab av mus rau cov hlau ci ua ntej haum -up.
Qhov cua:
teeb tsa lub qhov cua hauv zos lossis vuam sab nraum zoov kom tswj tau cov pa taws.
PPE:
siv kev tiv thaiv ua pa ntsuas rau cov pa taws hlau; yeej tsis welded galvanized steel nyob rau hauv qhov chaw kaw tsis muaj extraction.
Vuam txheej txheem xaiv
| Txheej txheem | Tus cwj pwm ntawm Galvanized Steel | Kev xyaum zoo tshaj plaws |
|---|---|---|
| SMAW (zeeg) | Tolerates zinc residue zoo dua | Cellulosic los yog E6010 hauv paus dhau rau kev nkag mus |
| GMAW (MIG) | Porosity txaus ntshai los ntawm fumes | Tshem cov zinc kom huv si; kom tiv thaiv gas ntws kom raug |
| GTAW (TIG) | Cleanest welds thaum zinc tshem tawm | Txaus siab rau nyias- phab ntsa thiab siab- cov pob qij txha zoo |
Txhim kho kev tiv thaiv corrosion
Vuam rhuav tshem cov zinc nyob rau hauv tshav kub- thaj tsam cuam tshuam, tawm hauv cov hlau liab qab uas yuav corrode sai hauv kev pabcuam. Tom qab vuam thiab tshuaj xyuas:
Ntxuav qhov chaw weld los ntawm txhuam txhuam los yog lub teeb abrasive blasting.
Siv cov zinc-nplua nuj kho xim lossis, yog tias ua tau, rov-galvanize thaj chaw kho.
Rau qhov kev pabcuam tseem ceeb, siv ob- cov txheej txheem txheej txheem txheej txheem raws li qhov project specification.
Txheeb xyuas qhov kho cov yeeb yaj kiab tuab nrog lub ntsuas ntsuas qhov twg tau teev tseg.
Cov txheej txheej kho yuav tsum muab kev tiv thaiv sib npaug rau qhov qub galvanizing kom qhov sib koom ua ke tsis dhau los ua qhov chaw ua ntej corrosion.
Cov lus nug nquag
Nws puas muaj kev nyab xeeb rau vuam galvanized steel yeeb nkab?
Yog, nrog kev npaj kom raug thiab tso cua. Qhov phom sij tseem ceeb yog zinc- oxide fume, uas ua rau cov hlau fume kub taub hau, yog li kev tshem tawm thiab kev tiv thaiv ua pa yog qhov tseem ceeb.
Vim li cas galvanized welds tau ntxeem tau?
Zinc vapor los ntawm cov txheej txheej boils rau hauv lub pas dej ua ke thiab ua rau hauv cov hnab ris roj thaum lub weld solidifies.
Yuav tsum zinc raug tshem tawm ua ntej vuam?
Rau cov qauv thiab siab welds, yog. Sib tsoo cov txheej rov qab 25-50 mm tiv thaiv porosity thiab muab tag nrho fusion.
Puas yog vuam tsis muaj zog ntawm cov yeeb nkab galvanized?
Lub vuam nws tus kheej, yog tias ua tau zoo, sib tw lossis tshaj cov yeeb nkab zog; Qhov kev pheej hmoo tiag tiag yog qhov corrosion hauv zos qhov twg zinc raug hlawv, yog li txheej txheej kho yog qhov tseem ceeb.
Yuav ua li cas cov zinc txheej kho tom qab vuam?
Los ntawm kev ntxuav thaj chaw muaj kev cuam tshuam thiab siv zinc- nplua nuj xim lossis txheej txheej kho tag nrho los kho kev tiv thaiv kev txi.
galvanized yeeb nkab puas tuaj yeem welded rau siab - kev pabcuam siab?
Yog lawm, tab sis cov vuam yuav tsum tau ua rau qhov project code tom qab zinc tshem tawm, tshuaj xyuas los ntawm radiography lossis hydrostatic test, thiab cov txheej txheem kho; threaded los yog mechanical pob qij txha feem ntau nyiam rau me me bores.
