Pamene kuwotcherera 300 Series zitsulo zosapanga dzimbiri, makontrakitala akhoza kuthetsa backflushing pa mfundo muzu wa mipope lotseguka olowa pamene kukhala mkulu kuwotcherera khalidwe.
Kuwotcherera kwa machubu osapanga dzimbiri ndi mapaipi nthawi zambiri kumafuna kubwezeredwa ndi argon pogwiritsa ntchito njira zachikhalidwe monga kuwotcherera kwa tungsten arc (GTAW) ndi kuwotcherera zitsulo zotetezedwa (SMAW).Koma mtengo wa gasi ndi nthawi yomwe imafunika kuti amalize kuyeretsa kungakhale kofunikira, makamaka pamene ma diameter a mapaipi ndi kutalika kumawonjezeka.
Material Data Sheet
9.25 * 1.24mm ASTM A216 316/316L Chitsulo chosapanga dzimbiri chophimbidwa chubu kuchokera ku China
Kusankhidwa Kwazinthu | 1.4404 |
AISI/SAE | 316l ndi |
Dzina Lachidule la EN | X2CrNiMo 17-12-2 |
UNS | Mtengo wa 31603 |
Norm | 10088-2 |
Minda yayikulu yogwiritsira ntchito 1.4404
Izi zimagwiritsidwa ntchito makamaka m'mafakitale a mankhwala, nsalu ndi mapepala, ndipo nthawi zambiri amagwiritsidwa ntchito pazida, m'makampani aukhondo komanso popanga mapaipi.
Mankhwala a 1.4404
C | Si | Mn | P | S | Cr | Mo | Ni | N |
≤ % | ≤ % | ≤ % | ≤ % | ≤ % | % | % | % | ≤ % |
0,03 | 1, 0 | 2, 0 | 0,045 | 0,015 | 16,5-18,5 | 2,0-2,5 | 10,0-13,0 | 0, 11 |
Pulogalamu yotumizira
Mapepala / mbale mm
0.5-40
Mzere wolondola mm
0.2 - 0.5
Pamene kuwotcherera 300 Series zitsulo zosapanga dzimbiri, makontrakitala akhoza kusinthana kwa kusinthidwa yochepa dera zitsulo arc kuwotcherera (GMAW) ndondomeko m'malo GTAW chikhalidwe kapena SMAW.Njira yowongolera ya GMAW yafupipafupi imaperekanso ntchito zowonjezera, zogwira mtima komanso zosavuta kugwiritsa ntchito kuti zithandizire kuchulukitsa phindu.
Chifukwa cha kukana kwa dzimbiri komanso mphamvu zake, ma aloyi achitsulo chosapanga dzimbiri amagwiritsidwa ntchito pamapaipi ambiri, kuphatikiza mafuta ndi gasi, mafakitale a petrochemical, ndi biofuel.Ngakhale kuti GTAW yakhala ikugwiritsidwa ntchito pazitsulo zambiri zosapanga dzimbiri, ili ndi zovuta zina zomwe zingatheke ndi GMAW yosinthidwa.
Choyamba, chifukwa cha kuchepa kwa owotcherera aluso, kupeza akatswiri a GTAW ndizovuta nthawi zonse.Kachiwiri, GTAW si njira yowotcherera yothamanga kwambiri, zomwe zimapangitsa kuti zikhale zovuta kwa makampani omwe akufuna kuwonjezera zokolola kuti akwaniritse zofuna za makasitomala.Chachitatu, kubwezeredwa kwakutali komanso kokwera mtengo kwa mapaipi achitsulo chosapanga dzimbiri ndi mapaipi ndikofunikira.
Purge ndikuyambitsa gasi panthawi yowotcherera kuti achotse zonyansa ndikupereka chithandizo.Back side purge imateteza kumbuyo kwa weld ku mapangidwe a heavy oxides pamaso pa okosijeni.
Ngati kumbuyo sikutetezedwa panthawi yowotcherera muzu, izi zingayambitse kusweka kwa zinthu zoyambira.Chilemachi chimadziwika kuti shugaring, chomwe chimatchedwa chifukwa pamwamba mkati mwa weld ndi ofanana kwambiri ndi shuga.Pofuna kupewa shuga, wowotcherera amalowetsa payipi ya gasi kumapeto kwa chitoliro, kenaka amamanga malekezero a chitoliro ndi mapulagi oyeretsa.Anapanganso potulukira mbali ina ya chitolirocho.Komanso nthawi zambiri amajambulidwa mozungulira seams.Atatha kuyeretsa chitolirocho, adachotsa kachidutswa ka tepi kuzungulira cholumikizira ndikupitilira kuwotcherera, kubwereza kuvula ndi kuwotcherera mpaka kutha kwa mizu.
Blowback ikhoza kuwononga nthawi ndi ndalama zambiri, nthawi zina kuwonjezera masauzande a madola ku polojekitiyi.Kusinthira ku njira yachidule ya GMAW yotsogola yalola kampaniyo kuti ipange ma passode opanda mizu muzinthu zambiri zachitsulo chosapanga dzimbiri.Kuwotcherera 300 mndandanda wazitsulo zosapanga dzimbiri ndi munthu wabwino, pomwe kuwotcherera zitsulo zosapanga dzimbiri zosapanga dzimbiri kumafuna GTAW pamizu.
Kusunga kutentha kochepera momwe kungathekere kumathandiza kuti chogwirira ntchito chisawonongeke.Njira imodzi yochepetsera kutentha ndikuchepetsa kuchuluka kwa ziphaso zowotcherera.Njira yosinthidwa ya GMAW yafupipafupi monga chitsulo chowongolera (RMD®) imagwiritsa ntchito kusamutsa zitsulo zoyendetsedwa bwino kuti zitsimikizire kuyika kwa madontho ofanana.Izi zimapangitsa kukhala kosavuta kwa wowotchera kuwongolera dziwe la weld, potero kuwongolera kulowetsa kwa kutentha ndi liwiro la kuwotcherera.Kutentha kochepa kumapangitsa kuti bafa losungunuka lizizizira kwambiri.
Chifukwa cha kusamutsidwa kwachitsulo komanso kuzizira kwambiri kwa dziwe la weld, dziwe la weld limakhala lopanda chipwirikiti ndipo mpweya wotchinga umatuluka muuni wa GMAW bwino.Izi zimapangitsa kuti mpweya wotetezedwa upitirire kupyola muzu wowonekera, kukakamiza kunja kwa mlengalenga ndikuletsa saccharification kapena oxidation pansi pa weld.Chifukwa chithaphwicho chimaundana msanga, zimatenga nthawi yochepa kuti gasi atseke.
Kuyezetsa kwawonetsa kuti kusinthidwa kwafupipafupi kwa GMAW kumayenderana ndi mfundo za weld khalidwe pamene kusunga kukana dzimbiri zitsulo zosapanga dzimbiri monga ntchito GTAW kwa muzu chiphaso kuwotcherera.
Kuwotcherera mizu yotseguka pogwiritsa ntchito njira yosinthidwa ya GMAW yafupika kutha kubweretsanso maubwino ena pakupanga, kuchita bwino, komanso maphunziro owotcherera.
Kusintha kwa njira zowotcherera kumafuna makampani kuti ayenerere njira zawo, koma kusinthaku kumatha kulipira malinga ndi nthawi komanso kupulumutsa mtengo - pazopanga zatsopano komanso kukonzanso.
Kuwotcherera mizu yotseguka pogwiritsa ntchito njira yosinthidwa ya GMAW yafupika kutha kubweretsanso maubwino ena pakupanga, kuchita bwino, komanso maphunziro owotcherera.Izi zikuphatikizapo:
Amathetsa kuthekera kwa njira zotentha chifukwa chotheka kuyika zitsulo zambiri kuti muwonjezere makulidwe a mizu.
Kukana kwabwino kwambiri pakusamuka kwapamwamba ndi kotsika pakati pa magawo a chitoliro.Njirayi imatha kutsekereza mipata mpaka mainchesi 3⁄16 chifukwa cha kusamutsa kwachitsulo kosalala.
Kutalika kwa arc kosalekeza kumasungidwa mosasamala kanthu za kufalikira kwa ma elekitirodi, komwe kumalipiritsa ogwira ntchito omwe amavutika kuti azikhala ndi utali wotalikirapo nthawi zonse.Phuli loyendetsedwa bwino la weld komanso kusintha kwachitsulo kosasintha kumachepetsa nthawi yophunzitsira ma welder atsopano.
Chepetsani nthawi yoti musinthe.Waya yemweyo ndi gasi wotchingira angagwiritsidwe ntchito pamizu, kudzaza ndi chishango.Njira ya pulsed GMAW ingagwiritsidwe ntchito pokhapokha ngati njirazo zadzazidwa ndi kusindikizidwa ndi mpweya wotchinga womwe uli ndi osachepera 80% argon.
Pantchito zomwe zikufuna kuthetsa kubweza m'mbuyo muzitsulo zosapanga dzimbiri, ndikofunikira kutsatira malangizo asanu ofunikira kuti musinthe bwino kupita ku njira yachidule ya GMAW.
Tsukani mapaipi mkati ndi kunja kuti muchotse zodetsa zilizonse.Tsukani osachepera inchi imodzi kuchokera m'mphepete mwa choyikapo ndi burashi yawaya yopangidwira chitsulo chosapanga dzimbiri.
Gwiritsani ntchito zitsulo zosapanga dzimbiri za silicon zosapanga dzimbiri monga 316LSi kapena 308LSi.Zomwe zili pamwamba pa silicon zimathandizira kunyowetsa bafa losungunuka ndikuchita ngati deoxidizer.
Kuti mupeze zotsatira zabwino, gwiritsani ntchito chishango cha gasi wosakaniza wopangidwa mwapadera kuti agwire ntchitoyi, monga 90% helium, 7.5% argon, ndi 2.5% carbon dioxide.Njira ina ndi 98% argon ndi 2% carbon dioxide.Wopereka gasi wowotcherera akhoza kukhala ndi malingaliro ena.
Kuti mupeze zotsatira zabwino, gwiritsani ntchito nsonga ya cone ndi mizu ya ngalande kuti muzitha kuphimba mpweya.Conical nozzle yokhala ndi diffuser yomangidwa mkati imapereka chivundikiro chabwino kwambiri.
Dziwani kuti kugwiritsa ntchito njira yachidule ya GMAW yosinthidwa (palibe gasi wosungira) kumapangitsa kuti pang'ono pang'onopang'ono kumalire kumbuyo kwa weld.Nthawi zambiri zimayaka pamene weld akuzizira ndikukwaniritsa miyezo yapamwamba yamakampani amafuta, mafakitale amagetsi ndi mafuta a petrochemicals.
Jim Byrne ndi woyang'anira malonda ndi ntchito kwa Miller Electric Mfg. LLC, 1635 W. Spencer St., Appleton, WI 54912, 920-734-9821, www.millerwelds.com.
Tube & Pipe Journal idakhazikitsidwa mu 1990 ngati magazini yoyamba yoperekedwa kumakampani opanga zitoliro zachitsulo.Mpaka lero, ikadali buku lokhalo lamakampani ku North America ndipo lakhala gwero lodalirika lazidziwitso kwa akatswiri a machubu.
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Nthawi yotumiza: Apr-03-2023