Muchiito chekugadzira, kuchinjika ikozvino kunowanzo shandiswa kana welding aruminiyamu, magnesium uye alloys adzo, kuitira kuti panguva yekuchinjana ikozvino welding, kana workpiece iri cathode, inogona kubvisa iyo oxide firimu, iyo inogona kubvisa iyo oxide firimu inoumbwa pa. pamusoro pedziva rakaumbwa; tungsten yakanyanyisa Kana iyo cathode inoshandiswa, tungsten electrode inogona kutonhodzwa, uye panguva imwe chete, maerekitironi akakwana anogona kubudiswa, izvo zvinobatsira kugadzikana kwearc, kuitira kuti zvose zvigone kuverengwa, uye welding. process inogona kuenderera zvakanaka.
Zvisinei, kana uchishandisa simba re AC, matambudziko anotevera anomukawo: Kutanga, ichabudisa chikamu cheDC, chinokuvadza; chechipiri, simba reAC rinopfuura nepakati zero point 100 nguva pasekondi, uye matanho ekudzikamisa arc anofanira kutorwa.
Izvi zvinotevera zvinonyanya kuunza chizvarwa uye kubviswa kwechikamu cheDC.
Panyaya ye AC arc, nekuda kwekusiyana kwemagetsi uye ekupisa kwemuviri zvimiro uye geometric dimensions e electrode uye base simbi, iyo arc column conductivity, magetsi emumunda intensity uye arc voltage muzvikamu zviviri zvehafu ye AC ikozvino ndizvo. asymmetrical, ichiita iyo arc ikozvino Zvakare kwete symmetrical. Muchikamu chehafu ye tungsten pole cathode, conductivity ye arc column yakakwirira, magetsi emagetsi emagetsi iduku, arc voltage yakaderera uye ikozvino yakakura; muhafu yekutenderera apo simbi yepasi ndiyo cathode, mamiriro acho akangopesana, iyo arc voltage yakakwira uye ikozvino idiki. Nekuda kweiyo asymmetry yezvino muzvikamu zviviri zvehafu, ikozvino ye AC arc inogona kutorwa seyakaumbwa nezvikamu zviviri, imwe ndeye AC ikozvino, uye imwe ndeye DC ikozvino yakasimudzwa pane AC chikamu, uye chekupedzisira. ndicho chikamu cheDC. Chiitiko chekuti chikamu cheDC chinogadzirwa muAC arc chinodaidzwa kuti rectification mhedzisiro ye tungsten AC argon arc welding. Iyi gadziriso mhedzisiro haingove iripo panguva ye AC TIG welding yealuminium, asi inoitikawo kana zvimiro zvemuviri zvema electrode zvinhu zviviri zvakasiyana. Dambudziko iri rinovapowo kana welding alloys akaita semhangura nemagnesium ine AC. Kunyange kana chinhu chimwe chete chinoshandiswa kune AC welding, nekuda kwekusiyana pakati pe electrode uye workpiece geometry uye mamiriro ekupisa kupisa, pachava nechikamu cheDC, asi kukosha kwacho kuduku uye hakukanganisi kushanda kwechigadzirwa.
Xinfa argon arc welding ine yakanakisa mhando uye yakasimba kusimba, kune ruzivo, ndapota tarisa:https://www.xinfatools.com/tig-torches/
Kana iyo magetsi uye thermophysical zvimiro zvesimbi yepasi uye electrode zvakasiyana, iyo yataurwa pamusoro asymmetry ichave yakakomba, uye chikamu cheDC chichava chikuru. Pane zvinopesana, magetsi uye thermophysical emhando yesimbi yepasi uye electrode haisi yakasiyana zvakanyanya, uye kusiyana kwekupisa kupisa pakati pezviviri kunongokonzerwa nemhando dzakasiyana dzejometri, uye kugadzirisa kwekugadzirisa hakusi pachena. Semuenzaniso, muMIG welding, iyo welding wire uye workpiece inowanzogadzirwa nechinhu chimwe chete, saka asymmetry yataurwa pamusoro apa haisi pachena, uye chikamu chiduku cheDC chinogona kuregererwa.
Kutungamira kwechikamu cheDC kwakafanana nekwazvino kutungamira muhafu yekutenderera kwetungsten pole cathode, inoyerera kubva pachigadziko chinhu ichienda kune tungsten pole, iyo yakaenzana neiyo yakanaka DC magetsi emagetsi mudunhu panguva yewelding. Nekuda kwekuvapo kwechikamu cheDC, chekutanga, kubviswa kweiyo oxide firimu necathode ichave isina simba, uye chechipiri, chikamu cheDC magineti chinobuda musimbi yesimbi yewelding transformer, uye chikamu ichi iyo DC magineti flux ichave yakashongedzwa pane yekutanga alternating magineti flux, ichiita iyo simbi Iyo musimboti inogona kusvika magineti saturation mune imwe nzira, zvichikonzera kuwedzera kukuru kwetransformer excitation ikozvino. Nenzira iyi, kune rumwe rutivi, kurasikirwa kwesimbi uye kurasikirwa kwemhangura kweshanduko kuchawedzera, kubudirira kuchaderera, uye kuwedzera kwekushisa kuchawedzera; kune rumwe rutivi, iyo waveform yewelding ikozvino ichave yakakanganiswa zvakanyanya, uye iyo simba chinhu ichaderedzwa. Izvi zvichava nemigumisiro yakaipa pakupisa kwakagadzikana kwearc.
Nguva yekutumira: Chivabvu-08-2023
