1. Dab tsi yog qhov tseem ceeb ntawm cov pa taws uas tsim thaum lub sij hawm vuam galvanized coils? Vim li cas thiaj li muaj kev tiv thaiv tshwj xeeb?
A: Thaum lub sij hawm welding galvanized coils, zinc txheej sai sai vaporizes ntawm qhov kub thiab txias thiab reacts nrog oxygen nyob rau hauv cov huab cua, generating nplua fumes feem ntau muaj xws li zinc oxide, nrog rau me me hlau oxides xws li hlau thiab manganese. Kev nqus cov zinc oxide fumes tuaj yeem ua rau "metal fume fever," uas tshwm sim ua npaws, ua daus no, ua rau lub qhov ncauj, thiab xeev siab. Cov tsos mob feem ntau tshwm sim nyob rau hauv cov sij hawm ntawm kev raug mob thiab kav ntev li ob peb teev mus rau ib hnub. Ntev - raug rau lub sij hawm kuj tuaj yeem ua rau ua pa nyuaj. Yog li ntawd, yuav tsum tau muaj kev tiv thaiv nruj dua li cov kev siv vuam zoo tib yam carbon steel.
2. Dab tsi yog qhov zoo tshaj plaws engineering tswj kev ntsuas rau galvanizing vuam fumes?
A: Kev ntsuas kev tswj xyuas zoo tshaj plaws yog siv lub tshuab tso pa hauv zos (piv txwv li, vuam fume purifier). Cov cua nkag yuav tsum nyob ze li sai tau mus rau qhov chaw vuam kom paub meej tias cov pa taws raug ntes ua ntej lawv kis tau. Rau cov chaw ua haujlwm ruaj khov, siab -tsis zoo- siab lossis lub hauv paus fume purification units tuaj yeem siv tau, nruab nrog siab -cov lim dej ua haujlwm zoo (HEPA pom kev ua haujlwm ntau dua lossis sib npaug rau 99.97%) tsom rau submicron-sized zinc oxide particles. Rau qhov tsis yog- kho ntawm- qhov chaw ua haujlwm, yuav tsum siv lub tshuab fume purifiers, nrog rau hluav taws kub - tiv thaiv cov caj npab thiab cov plua plav hoods. Tsis tas li ntawd, thaum muaj xwm txheej tso cai, vuam yuav tsum tau ua ntej sab nraum zoov lossis hauv kev cob qhia loj nrog rau tag nrho qhov cua kom tsis txhob muaj fume tsub zuj zuj.
3. Yam khoom siv tiv thaiv ua pa yuav tsum hnav li cas? Puas yog daim npog ntsej muag zoo tib yam puas txaus?
A: Lub ntsej muag plua plav zoo ib yam (xws li KN90 / KN95 qib hauv GB 2626-2019) tsis txaus rau kev lim dej nano-loj zinc oxide fumes, thiab lawv qhov tsis zoo haum rau lub ntsej muag ua rau lawv yooj yim to. Nws raug nquahu kom siv lub tshuab lim dej ib nrab- ntsej muag lossis puv - lub ntsej muag ua pa uas ua tau raws li N95 lossis siab dua cov qauv (xws li N100, P100), ua kom lub ntsej muag zoo. Rau qhov chaw kaw lossis ntev ntev -kev ua haujlwm siab, yuav tsum tau siv lub tshuab ua pa kom huv huv -pab pa (PAPR) lossis lub tshuab ua pa ntev ntev yuav tsum tau siv los muab cua huv. Lus Cim: Cov qhov ncauj qhov ntswg ua kom muaj pa roj carbon monoxide tsuas yog siv tau rau cov pa roj carbon monoxide adsorbing thiab tsis muaj txiaj ntsig tiv thaiv zinc oxide fumes.
4. Dhau li ntawm kev tiv thaiv ua pa, yuav tsum ua li cas lwm yam kev tiv thaiv tus kheej?
A: Cov neeg ua haujlwm yuav tsum hnav cov nplaim taws- tiv thaiv los yog hlawv - tiv thaiv vuam tiv thaiv khaub ncaws, hnab looj tes, thiab tsom iav los yog vuam qhov ncauj qhov ntswg. Txij li zinc vapor condenses rau hauv cov hmoov zinc oxide dawb ntawm qis- qhov chaw kub tom qab txias, uas yooj yim adheres rau cov plaub hau thiab tawv nqaij, nws raug nquahu kom hnav lub kaus mom plua plav thiab ib qho -cov khoom ua haujlwm. Hloov khaub ncaws thiab da dej tam sim ntawd tom qab vuam. Kev noj haus thiab haus luam yeeb yog txwv tsis pub nyob hauv thaj chaw ua haujlwm kom tiv thaiv kev nqus pa ntawm tes thiab qhov ncauj. Kev haus mis nyuj lossis dej haus uas muaj vitamin C ua ntej thiab tom qab ua haujlwm, thaum tsis muaj kev tiv thaiv ncaj qha, tuaj yeem pab txo qhov tsis xis nyob rau qee tus neeg ua haujlwm.
5. Yuav ua li cas cov txheej txheem vuam tuaj yeem txhim kho kom txo tau cov fume tiam thiab yog li kev tiv thaiv qis dua?
A: Galvanized vuam fumes feem ntau yog los ntawm qhov siab -kub evaporation ntawm zinc. Yog li ntawd, txo cov cua sov nkag los yog hloov cov cua sov txoj kev yuav txo tau zinc evaporation. Kev txhim kho cov txheej txheem tshwj xeeb suav nrog: ua ntej ua ntej ntawm cov pa roj carbon dioxide arc vuam (mem tes MIG) tshaj li cov qauv MIG kom txo tau tag nrho cov cua sov nkag; siv vuam hlau nrog ib lub cheeb me me thiab muaj deoxidizer; ua haujlwm luv luv arc thiab nce vuam ceev; rau cov phaj nyias nyias nyias, qhov chaw vuam lossis vuam vuam tuaj yeem raug txiav txim siab, vim tias cov pa hluav taws xob tsim los ntawm cov cua sov hauv zos tau qis dua li ntawm arc vuam; Tsis tas li ntawd, tshem cov zinc txheej nyob rau hauv qhov chaw yuav tsum tau welded ua ntej welding (xws li, los ntawm kev sib tsoo tshuab los yog acid etching) muaj peev xwm tshem tawm cov fume tiam ntawm qhov chaw ntawd, tab sis nws yuav tsum tau muab sau tseg tias zinc - muaj plua plav generated thaum lub sij hawm sib tsoo yuav tsum tau kho nyias.