Kuwotcherera kwa MIG kumawerengedwa kuti ndi imodzi mwa njira zosavuta zowotcherera kuti muphunzire ndipo ndizothandiza pamagwiritsidwe osiyanasiyana ndi mafakitale.Popeza waya wowotcherera nthawi zonse amadya kudzera mumfuti ya MIG panthawiyi, sifunika kuyimitsa pafupipafupi, monga kuwotcherera ndodo.Zotsatira zake zimakhala zothamanga kwambiri komanso zokolola zambiri.
Kusinthasintha komanso kuthamanga kwa kuwotcherera kwa MIG kumapangitsanso njira yabwino yowotcherera malo onse pazitsulo zosiyanasiyana, kuphatikiza zitsulo zofewa komanso zosapanga dzimbiri, mumitundu yosiyanasiyana.Kuphatikiza apo, imapanga chowotcherera choyeretsa chomwe chimafuna kuyeretsedwa pang'ono kuposa ndodo kapena kuwotcherera.
Kuti muwonjezere phindu lomwe njirayi imapereka, ndikofunikira kusankha mfuti ya MIG yoyenera pantchitoyo.M'malo mwake, zomwe zida izi zimatha kukhudza kwambiri zokolola, nthawi yocheperako, mtundu wa weld ndi mtengo wogwirira ntchito - komanso chitonthozo chaowotcherera.Pano pali kuyang'ana kwa mitundu yosiyanasiyana ya mfuti za MIG ndi zina zofunika kuziganizira posankha.
Kodi amperage yoyenera ndi chiyani?
Ndikofunika kusankha mfuti ya MIG yomwe imapereka mpweya wokwanira ndi ntchito yozungulira ntchitoyo kuti mupewe kutenthedwa.Kuzungulira kwa ntchito kumatanthawuza kuchuluka kwa mphindi mu mphindi 10 zomwe mfuti imatha kuyendetsedwa mokwanira popanda kutenthedwa.Mwachitsanzo, 60 peresenti ya ntchito yozungulira imatanthawuza mphindi zisanu ndi chimodzi za arc-on nthawi mu mphindi 10.Chifukwa chakuti owotcherera ambiri sawotchera 100 peresenti ya nthawiyo, nthawi zambiri zimakhala zotheka kugwiritsa ntchito mfuti yocheperako powotcherera yomwe imafuna kuti ikhale yamphamvu kwambiri;mfuti zotsika kwambiri zimakhala zazing'ono komanso zosavuta kuziwongolera, motero zimakhala zomasuka kwa wowotcherera.
Poyesa kuchuluka kwa mfuti, ndikofunikira kulingalira za mpweya woteteza womwe ungagwiritsidwe ntchito.Mfuti zambiri m'makampani zimayesedwa ndikuvotera kuti azigwira ntchito molingana ndi momwe amagwirira ntchito ndi 100 peresenti CO2;mpweya wotchinga uwu umapangitsa kuti mfuti ikhale yozizira panthawi yogwira ntchito.Mosiyana ndi zimenezi, kuphatikiza kwa gasi wosakanikirana, monga 75 peresenti ya argon ndi 25 peresenti ya CO2, kumapangitsa kuti arc ikhale yotentha kwambiri ndipo imapangitsa kuti mfuti iwotche kwambiri, zomwe zimachepetsa ntchito.Mwachitsanzo, ngati mfuti idavotera pa 100 peresenti ya ntchito (kutengera kuyesa kwamakampani ndi 100 peresenti CO2), kuchuluka kwake ndi mpweya wosakanikirana kudzakhala kotsika.Ndikofunika kumvetsera kayendetsedwe ka ntchito ndi kutetezera gasi kuphatikiza - ngati mfuti imayikidwa pa 60 peresenti ya ntchito ndi CO2, kugwiritsa ntchito mpweya wosakanikirana kumapangitsa kuti mfutiyo ikhale yotentha kwambiri ndikukhala yosalimba.
Madzi - motsutsana ndi mpweya wozizira
Kusankha mfuti ya MIG yomwe imapereka chitonthozo chabwino kwambiri ndikugwira ntchito pa kutentha kozizira kwambiri komwe kumaloledwa ndi ntchito kungathandize kukonza nthawi ya arc-on ndi zokolola - ndipo, pamapeto pake, kuonjezera phindu la ntchito yowotcherera.
Kusankha pakati pa mfuti ya MIG yamadzi kapena yoziziritsidwa ndi mpweya kumadalira kwambiri momwe angagwiritsire ntchito komanso zofunikira za amperage, zomwe amakonda komanso mtengo wake.
Mapulogalamu omwe amaphatikizapo kuwotcherera mapepala achitsulo kwa mphindi zochepa chabe ola lililonse ali ndi zofunikira zochepa za makina oziziritsa madzi.Kumbali ina, mashopu okhala ndi zida zoyima zomwe amawotchera mobwerezabwereza pa 600 amps angafunike mfuti ya MIG yoziziritsidwa ndi madzi kuti athetse kutentha komwe kumatulutsa.
Makina otenthetsera a MIG oziziritsidwa ndi madzi amapopera njira yoziziritsira kuchokera pagawo la radiator, lomwe nthawi zambiri limaphatikizidwa mkati kapena pafupi ndi gwero lamagetsi, kudzera m'mipaipi yomwe ili mkati mwa mtolo wa chingwe, ndi chogwirira chamfuti ndi khosi.Choziziriracho chimabwereranso ku rediyeta, kumene makina ozizirirapo amatulutsa kutentha komwe kumabwera ndi choziziritsira.Mpweya wozungulira ndi mpweya wotchinga umamwazanso kutentha kuchokera kumalo owotcherera.
Mosiyana ndi izi, makina oziziritsa mpweya amadalira mpweya wozungulira komanso kutchingira mpweya kuti uchotse kutentha komwe kumachulukana ndi utali wa dera lowotcherera.Makinawa, omwe amayambira 150 mpaka 600 amps, amagwiritsa ntchito ma cabling amkuwa okhuthala kuposa makina oziziritsa madzi.Poyerekeza, mfuti zoziziritsidwa ndi madzi zimachokera ku 300 mpaka 600 amps.
Dongosolo lililonse lili ndi zabwino ndi zovuta zake.Mfuti zoziziritsidwa ndi madzi ndizokwera mtengo kwambiri kutsogolo, ndipo zingafunike kukonzanso ndi kuzigwiritsa ntchito.Komabe, mfuti zoziziritsidwa ndi madzi zimatha kukhala zopepuka komanso zosinthika kuposa mfuti zoziziritsidwa ndi mpweya, kotero zimatha kupereka zopindulitsa pochepetsa kutopa kwa oyendetsa.Koma chifukwa mfuti zoziziritsidwa ndi madzi zimafunikira zida zambiri, zitha kukhala zosathandiza pakugwiritsa ntchito zomwe zimafunikira kunyamula.
Wolemera- motsutsana ndi ntchito yopepuka
Ngakhale mfuti yotsika kwambiri ingakhale yoyenera pamapulogalamu ena, onetsetsani kuti imapereka mphamvu yowotcherera yofunikira pantchitoyo.Mfuti ya MIG yopepuka nthawi zambiri imakhala yabwino kwambiri pamapulogalamu omwe amafunikira nthawi zazifupi, monga zitsulo zotchingira kapena zitsulo zowotcherera.Mfuti zopepuka nthawi zambiri zimapereka mphamvu zokwana 100 mpaka 300, ndipo zimakonda kukhala zazing'ono komanso zolemera kuposa mfuti zolemera kwambiri.Mfuti zambiri za MIG zopepuka zimakhalanso ndi zogwirira zing'onozing'ono, zomwe zimawapangitsa kukhala omasuka kwa wowotcherera.
Mfuti za MIG zopepuka zimapereka mawonekedwe otsika pamtengo wotsika.Amagwiritsa ntchito zopangira zopepuka kapena zokhazikika (zopukutira, nsonga zolumikizirana ndi mitu yosunga), zomwe zimakhala zocheperako komanso zotsika mtengo kuposa anzawo olemera.
Kupumula kwa mfuti zopepuka nthawi zambiri kumapangidwa ndi mphira wosinthika ndipo, nthawi zina, mwina kulibe.Chotsatira chake, chisamaliro chiyenera kutengedwa kuti chiteteze kinking yomwe ingawononge waya wodyetsa ndi mpweya.Komanso zindikirani, kugwira ntchito mopitirira muyeso kwa mfuti ya MIG yopepuka kungayambitse kulephera msanga, kotero kuti mtundu uwu wa mfuti sungakhale woyenera pa malo omwe ali ndi ntchito zambiri ndi zosowa zosiyanasiyana za amperage.
Kumapeto ena a sipekitiramu, mfuti zolemetsa za MIG ndizosankha zabwino kwambiri pantchito zomwe zimafuna nthawi yayitali kapena maulendo angapo pazigawo zolimba, kuphatikiza ntchito zambiri zomwe zimapezeka popanga zida zolemera ndi ntchito zina zowotcherera.Mfutizi nthawi zambiri zimakhala zoyambira 400 mpaka 600 ndipo zimapezeka mumitundu yoziziritsidwa ndi mpweya ndi madzi.Nthawi zambiri amakhala ndi zogwirira zazikulu kuti zigwirizane ndi zingwe zazikulu zomwe zimafunikira kuti apereke ma amperage apamwamba awa.Mfuti nthawi zambiri zimagwiritsa ntchito katundu wolemetsa kutsogolo zomwe zimatha kupirira ma amperage apamwamba komanso nthawi yayitali ya arc-on.Makosi nthawi zambiri amakhala otalikirapo, kuyika mtunda wochulukirapo pakati pa wowotcherera ndi kutentha kwakukulu kuchokera ku arc.
Mfuti zochotsa fume
Pazinthu zina ndi ntchito zowotcherera, mfuti yochotsa fume ingakhale njira yabwino kwambiri.Miyezo yamakampani yochokera ku Occupational Safety and Health Administration(OSHA) ndi mabungwe ena owongolera chitetezo omwe amalamula malire ovomerezeka a utsi wowotcherera ndi zinthu zina (kuphatikiza hexavalent chromium) zapangitsa makampani ambiri kupanga ndalama.Mofananamo, makampani omwe akufuna kupititsa patsogolo chitetezo cha wowotcherera ndi kukopa atsopano odziwa ntchito zowotcherera kumunda angafune kulingalira za mfutizi, chifukwa zingathandize kupanga malo ogwirira ntchito osangalatsa.Mfuti zotulutsa fume zimapezeka mumitundu yambiri kuyambira 300 mpaka 600 amps, komanso masitayelo osiyanasiyana a chingwe ndi mapangidwe ake.Monga momwe zilili ndi zida zonse zowotcherera, ali ndi zabwino ndi zofooka zawo, kugwiritsa ntchito bwino, zofunika kukonza ndi zina zambiri.Ubwino umodzi wodziwika wamfuti wochotsa fume ndikuti amachotsa utsi pagwero, kuchepetsa kuchuluka komwe kumalowa m'malo opumira a wowotcherera.
Ubwino umodzi wodziwika wamfuti wochotsa fume ndikuti amachotsa utsi pagwero, kuchepetsa kuchuluka komwe kumalowa m'malo opumira a wowotcherera.
Mfuti zotulutsa fume zimatha, kuphatikiza ndi zina zambiri pakuwotcherera - kusankha waya wowotcherera, njira zina zosinthira ndi njira zowotcherera, machitidwe opangira kuwotcherera ndi kusankha zinthu zoyambira - kuthandiza makampani kutsatira malamulo achitetezo ndikupanga chotsuka, chowotcherera bwino. chilengedwe.
Mfutizi zimagwira ntchito pogwira utsi wopangidwa ndi kuwotcherera komwe kumayambira, mozungulira ndi kuzungulira dziwe la weld.Opanga osiyanasiyana ali ndi njira zawo zopangira mfuti kuti achite izi, koma, pamlingo woyambira, onse amagwira ntchito mofananamo: kudzera mukuyenda kwakukulu kapena kuyenda kwazinthu.Kusunthaku kumachitika kudzera m'chipinda cha vacuum chomwe chimakoka utsiwo kudzera pachibowo chamfuti ndikudutsa papaipi yamfuti kupita kudoko la kusefera (nthawi zina kumatchedwa vacuum box).
Mfuti zotulutsa fume ndizoyenera kugwiritsa ntchito mawaya olimba, ozungulira kapena waya wachitsulo komanso omwe amachitikira m'malo otsekeka.Izi zikuphatikiza, koma sizimangokhala, ntchito m'mafakitale opangira zombo ndi zida zolemetsa, komanso kupanga ndi kupanga zambiri.Ndiwoyeneranso kuwotcherera pazitsulo zocheperako komanso za kaboni, komanso pazitsulo zosapanga dzimbiri, chifukwa zinthuzi zimapanga milingo yayikulu ya chromium ya hexavalent.Kuphatikiza apo, zidazi zimagwira ntchito bwino pakugwiritsa ntchito kwambiri amperage komanso kutsika kwakukulu.
Zolinga zina: Zingwe ndi zogwirira
Pankhani yosankha chingwe, kusankha chingwe chaching'ono kwambiri, chachifupi komanso chopepuka kwambiri chomwe chingathe kugwiritsira ntchito amperage chingapereke kusinthasintha kwakukulu, zomwe zimapangitsa kuti zikhale zosavuta kuyendetsa mfuti ya MIG ndikuchepetsa kusokonezeka mu malo ogwira ntchito.Opanga amapereka zingwe zamafakitale kuyambira 8 mpaka 25 mapazi kutalika.Chingwe chikatalikirapo, m'pamenenso chimatha kuzunguliridwa ndi zinthu zomwe zili mu weld cell kapena kuzunguliridwa pansi ndikusokoneza mawaya.
Komabe, nthawi zina chingwe chachitali chimafunika ngati gawo lomwe likuwotcherera lili lalikulu kwambiri kapena ngati owotcherera amayenera kuyendayenda m'makona kapena pamwamba pazitsulo kuti amalize ntchitoyo.Pazifukwa izi, pamene ogwira ntchito akuyenda mmbuyo ndi mtsogolo pakati pa mtunda wautali ndi waufupi, chingwe chachitsulo cha mono coil chikhoza kukhala chisankho chabwinoko.Chingwe chamtunduwu sichimawombera mosavuta ngati zingwe zamafakitale ndipo zimatha kupereka mawaya osalala.
Chogwirizira mfuti ya MIG ndi kapangidwe ka khosi kumatha kukhudza kutalika kwa wogwiritsa ntchito popanda kutopa.Zosankha zogwirira ntchito zimaphatikizapo zowongoka kapena zokhotakhota, zonse zomwe zimabwera m'njira zotuluka;kusankha nthawi zambiri zimadalira wowotcherera amakonda amakonda.
Chogwirizira chowongoka ndicho chisankho chabwino kwambiri kwa ogwiritsa ntchito omwe amakonda choyambitsa pamwamba, popeza zogwirira zopindika nthawi zambiri sizimapereka mwayiwu.Ndi chogwirira chowongoka, woyendetsa akhoza kutembenuza khosi kuti aike choyambitsa pamwamba kapena pansi.
Mapeto
Pamapeto pake, kuchepetsa kutopa, kuchepetsa kubwerezabwereza komanso kuchepetsa kupsinjika kwa thupi lonse ndizinthu zazikulu zomwe zimapangitsa kuti pakhale malo otetezeka, omasuka komanso opindulitsa.Kusankha mfuti ya MIG yomwe imapereka chitonthozo chabwino kwambiri ndikugwira ntchito pa kutentha kozizira kwambiri komwe kumaloledwa ndi ntchito kungathandize kukonza nthawi ya arc-on ndi zokolola - ndipo, pamapeto pake, kuonjezera phindu la ntchito yowotcherera.
Nthawi yotumiza: Jan-01-2023
