Kupanga zitsulo zokutidwa ndi zinc ndizovuta kwambiri pamakampani opanga zinthu. Kuwotcherera Galvanized Steel ndizotheka. Kuchita izi popanda ma protocol oyenera, komabe, kumasokoneza kwambiri kukhulupirika kwadongosolo komanso chitetezo chaogwiritsa ntchito. Owotcherera amakumana ndi zovuta izi tsiku lililonse. Kusamalira chogwirira ntchito chokutidwa ndi zinc chimodzimodzi ngati chitsulo chopanda mpweya chitha kupangitsa kuti mayendedwe alephereke. Zimayambitsanso dzimbiri mofulumira, zosapeŵeka mu Malo Okhudzidwa ndi Kutentha (HAZ). Kuphatikiza apo, kuyaka zinc kumapangitsa kuti pakhale malo owopsa kwambiri m'masitolo. Utsi wachitsulo wowopsa umabweretsa chiwongola dzanja chachikulu pabizinesi iliyonse yopanga zinthu zabodza. Timapereka dongosolo lomveka bwino, lozikidwa pa umboni kuti liwunikire nthawi komanso momwe mungawotcherera bwino zidazi. Muphunzira njira zothandiza kuti muchepetse zovuta zazikulu zazitsulo ndikuteteza gulu lanu. Timaperekanso mfundo zotsatizana zomwe zimafunikira kuti musamachite dzimbiri kwa nthawi yayitali pamamangidwe anu omaliza.
Zofunika Kwambiri
Kuthekera: Chitsulo chamalata chimatha kuwotcherera, malinga ngati zokutira za zinki zachotsedwa kwathunthu ku zone yowotcherera isanamenye arc.
Kupewa Kuwonongeka: Kulephera kuvula zinki kumapangitsa kuti weld porosity, inclusions, ndi kusweka kwa intergranular chifukwa cha kusiyana kwakukulu kwa malo osungunuka pakati pa zinki ndi chitsulo.
Chitetezo Chofunikira: Zinc yokhala ndi vaporized imatulutsa utsi wapoizoni kwambiri. PPE yoyenera ndi mpweya wabwino ndi zofunikira zalamulo ndi zaumoyo zomwe sizingakambirane.
Kutsatira kwa Post-Weld: Kuwotcherera kumawononga wosanjikiza wa zinc woteteza; kupanga bwino kumafuna kubwezeretsedwa kwa pambuyo pa weld motsatira miyezo ya ASTM A 780.
The Metallurgical Reality of Welding Galvanized Steel
Kumvetsetsa fiziki yakulephera kumapanga maziko akupanga kotetezeka. Zinc amawira ndi kusanduka nthunzi pafupifupi 420°C (900°F). Chitsulo, mosiyana, chimasungunuka pafupifupi 1500 ° C (2700 ° F). Kusiyana kwakukulu kwa kutenthaku kumabweretsa vuto lalikulu la uinjiniya. Simungathe kusungunula zitsulo zonse ziwiri nthawi imodzi mokhazikika.
Ngati welded mwachindunji, nthaka vaporizes yomweyo pansi pa arc. Chimatsekeka mkati mwa thawe lachitsulo chosungunula pamene chithaphwicho chimalimba mofulumira. Mpweya wotsekekawu umapangitsa kuti pakhale porosity yambiri. Zimapanganso inclusions ndi kusowa koopsa kwa fusion. Chowotcherera chodzaza ndi matumba a gasi sichingathe kunyamula katundu wolemetsa.
Deta yamakampani ikuwonetsa njira yodziwikiratu yakutsogolo kwa kukhulupirika kwamapangidwe. Mukakonzekera bwino ndikuchotsa zinc kwathunthu, mphamvu ya kutopa imakhalabe. Kuthyoka kwake kwa cholumikizira choyera kumafanana ndi chitsulo chosatsekedwa. Simutaya ntchito zamakina ngati mutsatira ndondomeko zokonzekera bwino.
Kuwonongeka kwa zinc kumakhalabe pachiwopsezo chachikulu pakupangira. Zinc yamadzimadzi imatha kulowa m'malire ambewu yachitsulo cholimba chokhazikika. Timalimbana ndi vuto laumisirili pogwiritsa ntchito ma electrode otsika a silicon kapena rutile. Sungani zinthu za silicon pansi pa 0.2 Si kuti muchepetse ngozi zosweka bwino.
Zinthu Zofunika |
Chiwopsezo cha Weld Porosity |
Kuphwanya Risk Factor |
Chotsatira Chikhalidwe Chachilungamo |
Chitsulo Chopanda Carbon |
Zochepa |
Zochepa |
Baseline Standard |
Kupaka Zinc Kosakonzekera |
Wapamwamba Kwambiri |
Mkulu (Kulowa kwa Zinc) |
Wanyengerera Kwambiri |
Kuvula Moyenera Mgwirizano |
Zochepa |
Otsika (pogwiritsa <0.2 Si Electrode) |
Zofanana ndi Baseline |
Zaumoyo, Chitetezo, ndi Makhalidwe Osakambirana
Kukoka utsi wa zinc oxide kumabweretsa zoopsa zanthawi yomweyo paumoyo. Ogwira ntchito omwe ali ndi zinki ya vaporized nthawi zambiri amakhala ndi Metal Fume Fever. Amakhala ndi zizindikiro zowopsa ngati chimfine atangoyamba kumene. Zizindikirozi ndi monga nseru, kuzizira, kutentha thupi kwambiri, ndi kupweteka kwambiri kwa minofu. Matenda adzidzidzi awa amalepheretsa anthu ogwira ntchito zaluso ndipo amabweretsa zovuta zapantchito.
Masitolo ambiri mwatsoka amadalirabe nthano zoopsa za kuntchito. Owotcherera ena amakhulupirira moona mtima kuti kumwa mkaka kumateteza ku poizoni wa heavy metal. Tiyenera kuthetsa ndi kuchotsa nthawi yomweyo mphekesera zowopsa za m'masitolo. Mkaka suvala mapapo kapena kuyimitsa kuyamwa kwachitsulo mwanjira iliyonse. Palibe m'malo mwazakudya zomwe zingalowe m'malo mwaupangiri woyenera.
Zofunikira zovomerezeka zotetezedwa zimateteza ogwira nawo ntchito kuti asavulazidwe kosatha. Muyenera kukhazikitsa mwamphamvu kupuma komanso kuteteza chilengedwe.
Ikani makina opumira a gwero kuti mukoke utsi kutali ndi malo opumira.
Gwiritsani ntchito malo opanda mpweya kapena malo olowera mpweya paliponse momwe mungathere.
Lamulirani P100 (HEPA) zophimba theka kuti zisefe bwino zinthu zowopsa.
Ikani ma Powered Air-Purifying Respirators (PAPR) kwa onse ogwira ntchito m'malo otsekedwa.
Pre-Weld Surface Kukonzekera: Chosankha cha Ubwino
Miyezo ya AWS D-19.0 imapereka zoyambira zokhazikika pokonzekera. Amalamula kuchotsa zokutira zinki 1 mpaka 4 mainchesi (2.5 mpaka 10 cm) kutali ndi malo owotcherera. Muyenera kuchita izi mbali zonse za olowa musanamenye arc. Kudumpha sitepe iyi kumatsimikizira kuwunika kolephera.
Opanga ambiri amanyalanyaza kwathunthu kufunikira koyeretsa kumbuyo kwa olowa. Izi timazitcha kuopseza kobisika. Kutentha kwa kutentha kumaphwetsa zinki yakumbuyo panthawi yowotcherera. Kutentha kwa capillary uku kumakoka mpweya wapoizoni ndi zowononga molunjika muzu wa weld. Muyenera kuyeretsa mbali zonse poyera kutentha kwakukulu.
Othandizira nthawi zambiri amasankha pakati pa njira zochotsera makina ndi mankhwala.
Kuchotsa Mwamakina: Izi zikuyimira njira yabwino kwambiri yamakampani m'masitolo ambiri. Gwiritsani ntchito ma disks okupera mwamphamvu kapena mawilo abrasive flap kuti mupeze chitsulo chowala, chopanda kanthu. Onetsetsani kuti mwachotsa gawo lonse la alloyed zinc, osati malo osawoneka bwino.
Kuchotsa Chemical: Mutha kugwiritsa ntchito muriatic acid pochotsa mankhwala m'malo enaake. Komabe, njirayi imafuna kulondola kwenikweni kwamankhwala. Muyenera kuchepetsa kwambiri asidi pogwiritsa ntchito soda. Pomaliza, yimitsani chitsulocho bwino kuti mupewe kuwonongeka kwa hydrogen.
Kusankha Njira Yowotcherera Yoyenera ndi Ma Parameters
Ntchito zosiyanasiyana zimafuna zosankha zapadera kwambiri. Kukonzekera njira yanu kumalepheretsa kuwaza kochulukirapo ndikuwonetsetsa kulowa mwakuya.
MIG Welding (GMAW) imagwira ntchito ngati njira yabwino kwambiri pazinthu zowonda ngati a zitsulo zotayidwa . Kusintha kwapadera kwa parameter ndikofunikira kwambiri pano. Oyendetsa amafunika maulendo otsika pang'ono kuposa momwe amagwiritsira ntchito zitsulo zopanda kanthu. Kuthamanga kwapang'onopang'ono kumapangitsa kuti zinc yotsalirayo iyake patsogolo pa thambi. Kuchulukitsa mphamvu yamagetsi kumathandizira kumenya zinc iliyonse yotsalira pamwamba. Gwiritsani ntchito kusakaniza kwa gasi wa Argon/CO2 kuti mukhazikike pa arc ndikuchepetsa kwambiri sipatter yowuluka.
Stick Welding (SMAW) ikadali njira yomwe imakonda kwambiri pamapangidwe ake. Kusintha kwamatekinoloje ndikofunikira kuti achite bwino. Ogwira ntchito ayenera kuchepetsa dala liwiro lawo. Ayenera kusintha ngodya ya electrode mpaka pafupifupi madigiri 30. Kugwiritsa ntchito rhythmic 'kukwapula kuchita' kumakankhira zinki kutsogolo ndi kunja kwa njira yowotcherera. E7018 low-hydrogen maelekitirodi amagwira ntchito ngati chisankho chokhazikika pakugwiritsa ntchito kolemetsa.
TIG Welding (GTAW) imabweretsa mavuto akulu pantchito. Sitikuletsa kwambiri njira iyi pazigawo zothandizidwa. Njira ya GTAW ndiyovuta kwambiri kutengera kuipitsidwa kwakunja. Zinc ya vaporized idzawononga nthawi yomweyo ma elekitirodi a tungsten. Zimawononga chitetezo cha gasi ndikusiya mkanda woipitsidwa kwambiri.
Njira Yowotcherera |
Kukwanira Konse |
Mulingo woyenera Material Mbiri |
Kusintha kwa Parameter Critical |
MIG (GMAW) |
Wapamwamba |
Thin Sheet Chitsulo |
Kuthamanga kochepa, voteji yapamwamba, Argon / CO2 mix |
Ndodo (SMAW) |
Wapamwamba |
Thick Structural Steel |
30-degree angle, kukwapula, E7018 electrode |
TIG (GTAW) |
Otsika Kwambiri |
Osavomerezeka |
Kukhumudwa kwambiri chifukwa cha kuipitsidwa kwa tungsten mwachangu |
Kubwezeretsa kwa Post-Weld ndi Lifecycle Defense
Kutentha kwakukulu kumachotsa zinthu zotsutsana ndi dzimbiri kuchokera kuzitsulo zozungulira. Izi timazitcha Vuto Lokhudzidwa ndi Kutentha (HAZ). Kuwonongeka kwa kutentha kumeneku kumachititsa kuti malo amene angolumikizana kumenewo akhale pachiwopsezo cha dzimbiri. Popanda kulowererapo, selo la galvanic limapanga. Selo iyi imafulumizitsa mofulumira kuwonongeka kwa zitsulo zopanda kanthu zozungulira.
Muyenera kufotokoza ndondomeko yoyendetsera ntchito yokonzanso mgwirizano. Kutsata mosamalitsa ndi ASTM A 780 kumalepheretsa makutidwe ndi okosijeni msanga. Kutsatira izi kumapangitsa kuti msonkhanowo ufike nthawi yake yokhazikika.
Miyezo yamakampani imazindikira njira zingapo zothandiza kwambiri zobwezeretsa.
Kupaka utoto wapadera wokhala ndi zinc pazitsulo zopanda kanthu. Izi zokutira mafakitale ayenera kukhala osachepera 95% koyera nthaka mu filimu youma.
Pogwiritsa ntchito zinc-based soldering alloys kusungunula chotchinga chatsopano pazitsulo zopanda kanthu.
Kupopera mbewu kwa matenthedwe, komwe kumadziwikanso kuti metallizing, kwa ntchito zolemetsa zamalonda ndi mafakitale.
Konzani zoyembekeza za kasitomala kumayambiriro kwa ntchito yopanga. Malo okonzedwa amayamba kuwonetsa kukongola kosiyana kosiyana. Nthawi zambiri amawoneka siliva wonyezimira motsutsana ndi maziko otuwa a imvi. Iwo mwachibadwa adzazizira ndi okosijeni kuti agwirizane ndi mapeto oyambirira pakapita nthawi.
Kuwunika Njira Zina Zopangira ROI Yabwino
Kupera, kuwotcherera mwapadera, ndi kukhudza pambuyo pa weld kumabweretsa ndalama zambiri zogwirira ntchito. Amapanganso zolepheretsa kuyenda kwa ntchito. Eni mabizinesi akuyenera kuwunika ngati kuwotcherera zitsulo zomwe zidakutidwa kale zikupanga ndalama. Nthawi zina, njira zina zimabweretsa Kubwezera kwakukulu pa Investment.
Pakupanga kwambiri, yang'anani mosamala ROI ya kutsatizana kwa ma process. Ganizirani kupanga zomangira zanu zonse ndi chitsulo chambiri, chosakutidwa kaye. Kenako mutha kutumiza msonkhano womalizidwa, wokutidwa bwino kuti upangire malata otentha. Kutsatira kumeneku kumathetsa kugaya, kumayimitsa utsi woopsa, komanso kumapereka chipolopolo choteteza mosalekeza.
Ganizirani zolumikizira za uinjiniya zamakina olumikizika m'malo mwa ma welds. Njira ina iyi imachotseratu utsi wapoizoni wa zinki pashopu yanu. Zimachotsanso kufunikira kwa kubwezeretsa kwa HAZ ndi zida zopumira zokwera mtengo.
Kupanga kwamphamvu kwambiri popanda zofunikira zowotcherera kumapindula ndi kugula kwanzeru kwazinthu zopangira. Kupeza mosalekeza koyilo yachitsulo yopangira mpukutu kapena kupondaponda nthawi zambiri imakhala yotsika mtengo kwambiri. Kupaka kagawo kakang'ono kumawononga nthawi ndi ndalama zambiri pamene coil yaiwisi ikugwirizana bwino ndi zomwe mukufuna. Kusindikiza ma coil omwe anali atakutidwa kale kumathandizira kwambiri ndandanda yopanga.
Mapeto
Kupanga zitsulo zokhala ndi zinc kumafuna njira yokhazikika, yokhazikika. Kuwotcherera zinthu izi ndi njira yotetezeka komanso yomveka bwino pokhapokha mutatsatira kukonzekera pamwamba. Muyenera kukhazikitsa magawo owotcherera ogwirizana ndikukakamiza kukonzanso pambuyo pa weld. Kutenga njira zachidule pokonzekera kukhoza kusokoneza malonda omaliza komanso thanzi la opareshoni.
Opanga zisankho ayenera kuchitapo kanthu nthawi yomweyo. Tikukulimbikitsani kuti muwunikenso ma SOP anu apansi apa sitolo kuti muwonetsetse kuti akugwirizana kwambiri ndi miyezo ya AWS ndi ASTM. Yang'anani zolemba zanu za PPE lero kuti muwonetsetse kuti muli ndi zosefera zokwanira za P100 ndi makina olowera mpweya. Pomaliza, yendetsani kusanthula kwatsatanetsatane kwa phindu loyerekeza kufananiza kuyambika kwa galvanizing kukayenderana ndi mayendedwe apambuyo agalasi. Kukonzekeletsa kutsatizanaku kudzakulitsa luso lanu logwira ntchito ndikuteteza mzere wanu wapansi.
FAQ
Q: Kodi mungawotcherera chitsulo chofewa ku chitsulo chamalata?
A: Inde, koma chopangira malata chiyenera kuchotsedwabe ku chitsulo chopanda kanthu polumikiza. Mipata yaying'ono iyenera kusiyidwa kuti mpweya uliwonse wa zinki wotsalira wochokera ku HAZ utuluke popanda kuchititsa porosity.
Q: Kodi kuwotcherera zitsulo kunja kuli kotetezeka?
Yankho: Kuwotcherera panja kumathandizira kwambiri mpweya wabwino koma sikuchotsa ngoziyo. Ogwira ntchito ayenera kuvala zopumira zovotera P100 ndikupera zinki.
Q: Kodi chingachitike ndi chiyani ngati nditawotchera zinki osagaya?
A: The weld adzakhala ndi porosity kwambiri (kutsekeredwa thovu gasi) ndi kusowa maphatikizidwe, kupangitsa kuti structural wosamveka ndi sachedwa kulephera kwambiri katundu.
