Kuwotcherera ndi njira yomwe zida zogwirira ntchito ziyenera kuwotcherera (mitundu yofanana kapena yosiyana) imaphatikizidwa ndi kutentha kapena kupanikizika kapena zonse ziwiri, kapena popanda zida zodzaza, kotero kuti zida za workpieces zimalumikizidwa pakati pa ma atomu kuti zikhale zokhazikika. kulumikizana.Ndiye mfundo zazikuluzikulu ndi njira zotani zotetezera kuwotcherera zitsulo zosapanga dzimbiri?
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Ndi ma elekitirodi ati omwe amagwiritsidwa ntchito powotcherera chitsulo chosapanga dzimbiri?
Ndodo zowotcherera zitsulo zosapanga dzimbiri zitha kugawidwa kukhala ndodo zowotcherera zitsulo zosapanga dzimbiri za chromium ndi ndodo zachitsulo zosapanga dzimbiri za chromium-nickel.Mitundu iwiri ya ndodo zowotcherera zomwe zimakwaniritsa mulingo wadziko zidzawunikidwa molingana ndi muyezo wadziko lonse wa GB/T983-2012.
Chitsulo chosapanga dzimbiri cha Chromium chimakhala ndi kukana dzimbiri (ma oxidizing acid, organic acid, cavitation), kukana kutentha ndi kukana dzimbiri.Nthawi zambiri amasankhidwa ngati zida zopangira magetsi, makampani opanga mankhwala, mafuta amafuta ndi zina zotero.Komabe, chitsulo chosapanga dzimbiri cha chromium nthawi zambiri chimakhala ndi kuwotcherera koyipa, chifukwa chake kuyenera kuyang'aniridwa panjira yowotcherera, mikhalidwe yochizira kutentha komanso kusankha ndodo zoyenera zowotcherera.
Ndodo zowotcherera zitsulo za chromium-nickel zili ndi kukana kwa dzimbiri komanso kukana kwa okosijeni ndipo zimagwiritsidwa ntchito kwambiri m'makampani opanga mankhwala, feteleza, mafuta, komanso kupanga makina azachipatala.Pofuna kupewa dzimbiri intergranular chifukwa Kutentha, kuwotcherera panopa sayenera kukhala lalikulu, amene pafupifupi 20% zochepa kuposa mpweya zitsulo electrodes.Arc sayenera kutalika kwambiri, ndipo interlayers idzazizira mofulumira.Mkanda wopapatiza weld ndi woyenera.
Mfundo zazikuluzikulu ndi kusamala pakuwotcherera zitsulo zosapanga dzimbiri
1. Gwiritsani ntchito magetsi okhala ndi mawonekedwe ofukula akunja, ndipo gwiritsani ntchito polarity yabwino ya DC (waya wowotcherera ndi wolumikizidwa ndi mtengo woyipa)
1. Nthawi zambiri ndi oyenera kuwotcherera mbale woonda pansi 6mm.Iwo ali ndi makhalidwe okongola kuwotcherera msoko mawonekedwe ndi yaing'ono kuwotcherera deformation.
2. Gasi woteteza ndi argon ndi chiyero cha 99.99%.Pamene kuwotcherera panopa ndi 50 ~ 150A, argon mpweya otaya ndi 8 ~ 10L/mphindi;pamene panopa ndi 150 ~ 250A, mpweya wa argon ndi 12 ~ 15L / min.
3. Kutalika kwa electrode ya tungsten kuchokera ku mpweya wa mpweya makamaka 4 mpaka 5 mm.M'malo otetezedwa bwino monga ma welds a fillet, ndi 2 mpaka 3 mm.M'malo okhala ndi ma grooves akuya, ndi 5 mpaka 6 mm.Mtunda wochokera pamphuno kupita kuntchito nthawi zambiri suposa 15mm.
4. Pofuna kupewa kupezeka kwa pores kuwotcherera, dzimbiri lililonse, madontho amafuta, ndi zina zotere pa mbali yowotcherera ziyenera kutsukidwa.
5. The kuwotcherera arc kutalika makamaka 2 ~ 4mm pamene kuwotcherera zitsulo wamba, ndi 1 ~ 3mm pamene kuwotcherera zitsulo zosapanga dzimbiri.Ngati ndi yayitali kwambiri, zotsatira zachitetezo sizikhala bwino.
6. Panthawi yogwirizanitsa matako, pofuna kuteteza kumbuyo kwa mkanda wa weld pansi kuti ukhale ndi oxidized, mbali yakumbuyo iyeneranso kutetezedwa ndi mpweya.
7. Kuti mpweya wa argon uteteze bwino dziwe lowotcherera ndikuthandizira kuwotcherera, mzere wapakati wa tungsten elekitirodi ndi workpiece pamalo owotcherera uyenera kukhala ndi ngodya ya 80 ~ 85 °, ndi ngodya pakati pa waya wodzaza ndi pamwamba pa workpiece ayenera kukhala ochepa momwe angathere.Kawirikawiri ndi pafupifupi 10 °.
8. Wopanda mphepo komanso wodutsa mpweya.M'malo amphepo, onetsetsani kuti mwachitapo kanthu kuti mutseke maukonde, ndikuchitapo kanthu moyenerera m'nyumba.
2. Mfundo zazikuluzikulu ndi zodzitetezera pa kuwotcherera kwa MIG zitsulo zosapanga dzimbiri
1. Gwiritsani ntchito gwero la mphamvu yowotcherera lathyathyathya, ndipo gwiritsani ntchito reverse polarity ya DC (waya wowotcherera walumikizidwa ndi elekitirodi yabwino)
2. Kawirikawiri, argon yoyera (99.99% chiyero) kapena Ar + 2% O2 imagwiritsidwa ntchito, ndipo kuthamanga kwachangu kumakhala 20 ~ 25L / min.
3. Arc kutalika.Kuwotcherera kwa MIG chitsulo chosapanga dzimbiri nthawi zambiri kumawotcherera pansi pa kusintha kwa kutsitsi, ndipo magetsi ayenera kusinthidwa kukhala arc kutalika kwa 4 mpaka 6 mm.
4. Wopanda mphepo.Kuwotcherera kwa MIG kumakhudzidwa mosavuta ndi mphepo, ndipo nthawi zina mphepo imatha kuyambitsa pores.Choncho, njira zotetezera mphepo ziyenera kuchitidwa paliponse pamene mphepo ili pamwamba pa 0.5m / sec.
3. Mfundo zazikuluzikulu ndi kusamala kwa zitsulo zosapanga dzimbiri zowotcherera waya
1. Gwiritsani ntchito gwero la mphamvu zowotcherera lathyathyathya, ndipo gwiritsani ntchito reverse polarity pa DC kuwotcherera.Mutha kugwiritsa ntchito chowotcherera wamba CO2 kuwotcherera, koma chonde masulani pang'ono kukakamiza kwa gudumu la waya.
2. Gasi woteteza nthawi zambiri ndi mpweya wa carbon dioxide, ndipo mpweya wotuluka ndi 20 ~ 25L / min.
3. Mtunda woyenera pakati pa kuwotcherera nsonga ndi workpiece ndi 15 ~ 25mm.
4. Kuuma utali wautali, ambiri kuwotcherera panopa ndi za 15mm pamene kuwotcherera panopa ndi pansipa 250A, ndi za 20 ~ 25mm pamene kuwotcherera panopa ndi pamwamba 250A ndi abwino kwambiri.
Nthawi yotumiza: Dec-28-2023
