Molao-motheo:
Thepa ea tjheseletsa ea motlakase ke tšebeliso ea matla a motlakase, ka ho futhumatsa le ho hatella, ke hore, mocheso o phahameng oa mocheso o hlahisoang ke li-electrode tse ntle le tse mpe ka nako e khutšoanyane ea potoloho, ho qhibiliha solder le thepa e entsoeng ka electrode, ka thuso ea ho kopanya le ho ata ha liathomo tsa tšepe, e le hore li-welds tse peli kapa ho feta li kopane ka thata. E entsoe ka ho khetheha ka eleketrode, mochini oa welding oa motlakase, tong ea motlakase ea welding, clamp ea fatše le terata e kopanyang. Ho latela mofuta oa phepelo ea matla a tsoang, e ka aroloa ka mefuta e 'meli, e' ngoe ke mochini oa welding oa AC ha o mong ke mochini oa welding oa DC.
Mochini oa ho cheselletsakhokahano:
• Lithaole tsa welding li kopantsoe le lithapo tse kopanyang likoti tse kopanyang likoti mochineng oa ho tjheseletsa ka lithapo tse kopanyang;
• Sekoti sa fatše se hokahane le lesoba la ho theola sekoti se kopanyang mochine oa welding ka terata e kopanyang;
• Beha weldment holim'a phallo ea flux 'me u tlatse sekoti sa fatše ho ea qetellong ea weldment;
• Ebe u koala pheletso ea tlhohonolofatso ea eleketrode ho mehlahare ea welding;
• Tšireletso ea motheo kapa khokahanyo ea zero ea khetla ea mochine oa welding (sesebelisoa sa fatše se ka sebelisa phala ea koporo kapa phala ea tšepe e se nang seamless, botebo ba lepato la eona fatše e lokela ho ba> 1m, 'me ho hanyetsa fatše ho lokela ho ba <4Ω), ke hore, sebelisa terata ho hokahanya ntlha e' ngoe ho sesebelisoa sa ho theola 'me qetellong e 'ngoe ho ea qetellong ea khetla ea khetla.mochini oa ho tjheseletsa.
• Ebe o kopanya mochine oa ho tjheseletsa ka lebokose la kabo ka mohala o kopanyang, 'me u netefatse hore bolelele ba mohala o kopanyang ke limithara tse 2 ho isa ho tse 3,' me lebokose la kabo le lokela ho hlomelloa ka sesebelisoa sa ts'ireletso ea overload le sesebelisoa sa ho fetola thipa, joalo-joalo, e ka laolang matla a motlakase oa mochine oa welding ka thoko.
• Pele ho tjheseletsa, opareitara o lokela ho apara diaparo tse tjheseletsang, dieta tsa rabara tse insulated, diatlana tse sireletsang, dimake tse sireletsang le disebediswa tse ding tsa tshireletso, e le ho etsa bonnete ba polokeho ya motho ya sebetsang.
Khokahano ea tlhahiso ea matla le tlhahiso ea mochini oa welding:
Hangata ho na le litharollo tse 3 bakeng sa mohala oa ho kenya matla: 1) terata e phelang, terata e sa nke lehlakore, le terata e fatše; 2) Lithapo tse peli tse phelang le terata e le 'ngoe ea fatše; 3) Lithapo tse 3 tse phelang, terata e le 'ngoe ea fatše.
Mohala o hlahisoang oa mochini oa welding oa motlakase ha o khethollehe ntle le mochini oa welding oa AC, empa mochini oa welding oa DC o arotsoe ka tse ntle le tse mpe:
Mochini oa welding oa DC o positive polarity connection: Mokhoa oa ho kopanya polarity oa mochine oa welding oa DC o thehiloe holim'a workpiece e le referense, ke hore, workpiece ea tjheseletsa e hokahane le tlhahiso e ntle ea electrode ea mochine oa ho tjheseletsa oa motlakase, 'me letsoho la welding (clamp) le hokahane le electrode e fosahetseng. Polarity connection arc e na le litšoaneleho tse thata, arc e moqotetsane ebile e moepa, mocheso o tsepamisitsoe, ho kenella ho matla, ho kenella ho tebileng ho ka fumanoa ka nako e batlang e le nyenyane, sefaha sa weld (weld) se entsoeng se moqotetsane, le mokhoa oa ho cheselletsa o bonolo ho o tseba, hape ke oona o sebelisoang ka ho fetisisa.
DC welding machine negative polarity connection connection (eo hape e bitsoang reverse polarity connection): workpiece e hokahane le eleketrode e mpe, 'me molamu oa welding o hokahane le electrode e ntle. The mpe polarity arc ke bonolo, divergent, ho kenella ka hare, batlang e le khōlō hona joale, spatter khōlō, 'me e loketse bakeng sa libaka tse nang le ditlhoko tse khethehileng tjheseletsa tshebetso, tse kang ka morao sekoahelo holim'a sekoahelo se ka morao, holim'a tjheseletsa, moo tjheseletsa bead hloka likarolo tse pharaletseng le a bataletseng, tjheseletsa lipoleiti tšesaane le tšepe e khethehileng, joalo-joalo. Ho phaella moo, ha u sebelisa li-electrode tse tlaase tsa alkaline, khokahanyo e ka morao e tsitsitse ho feta arc e ntle, 'me palo ea spatter e nyenyane.
Mabapi le hore na ho sebelisoa khokahano e ntle ea polarity kapa mokhoa o mobe oa khokahano ea polarity nakong ea welding, e lokela ho etsoa qeto ho latela ts'ebetso ea welding,boemo ba ho tjheseletsalitlhoko le lisebelisoa tsa electrode.
Mokhoa oa ho ahlola polarity ea tlhahiso ea mochine oa welding oa DC: Mochini o tloaelehileng oa ho tjheseletsa o tšoailoe ka + le - ho terminal ea tlhahiso kapa boto ea terminal, + e bolela palo e ntle le - e bontša palo e mpe. Haeba li-electrode tse ntle le tse mpe li sa ngoloa, ho ka sebelisoa mekhoa e latelang ho li khetholla.
1) Mokhoa oa Empirical. Ha u sebelisa li-electrode tse tlaase tsa hydrogen (kapa alkaline) bakeng sa welding, haeba mollo oa arc o sa tsitsa, spatter e kholo, 'me molumo o le mabifi, ho bolela hore mokhoa oa ho hokahanya pele o sebelisoa; Ho seng joalo, e khutlisetsoa morao.
2) Mokhoa oa molamu oa mashala. Ha mokhoa oa carbon rod o sebelisoa ho fumana mokhoa oa ho hokahanya pele kapa mokhoa oa ho hokahanya ka morao, o ka boela oa ahloloa ka ho shebella arc le maemo a mang:
a. Haeba mollo oa arc o tsitsitse mme molamu oa carbon o chesa butle, ke mokhoa o motle oa ho hokahanya.
b. Haeba mollo oa arc o sa tsitsa 'me molamu oa carbon o chesoa haholo, ke mokhoa oa ho kopanya o reverse.
3) Mokhoa oa Multimeter. Mokhoa le mehato ea ho sebelisa multimeter ho ahlola mokhoa oa khokahanyo ea pele kapa mokhoa oa khokahanyo ea morao ke:
a. Beha multimeter sebakeng se phahameng ka ho fetisisa sa motlakase oa DC (ka holimo ho 100V), kapa sebelisa voltmeter ea DC.
b. Pente ea multimeter le mochine oa welding oa DC li ama ka ho latellana, haeba ho fumanoa hore pointer ea multimeter e khelohile ka nako, joale setsi sa mochine oa welding se kopantsoeng le pene e khubelu ke palo e ntle, 'me qetello e' ngoe ke palo e mpe. Haeba u leka ka multimeter ea digital, ha ho hlaha letšoao le fosahetseng, ho bolela hore pene e khubelu e kopantsoe le palo e mpe, 'me ha ho na letšoao le hlahang, e leng se bolelang hore pene e khubelu e amana le palo e ntle.
Ehlile, bakeng sa mochini oa welding o sebelisitsoeng, o ntse o tlameha ho hlahloba buka e tsamaisanang le eona.
Ke tsohle bakeng sa lintho tsa motheo tse arolelanoang kajeno sehloohong sena. Haeba ho na le ho sa lokelang, ka kopo utloisisa le ho lokisa
Nako ea poso: Mar-22-2025
