Ukukhetha okokusebenza okuzohlinzeka ngekhwalithi ephezulu kakhulu kanye nokukhiqiza ekusebenzeni kokushisela kudlula nje umthombo wamandla noma isibhamu sokushisela - izinto ezisetshenziswayo zidlala indima ebalulekile, futhi. Amathiphu okuxhumana, ikakhulukazi, angenza umehluko omkhulu phakathi kokwenza inqubo ephumelelayo kanye nokuqongelela isikhathi sokuphumula ukuze kulungiswe izinkinga. Ukukhetha ithiphu lokuxhumana elilungile lomsebenzi nakho kungaba nomthelela enzuzweni yokusebenza kokushisela.
Amathiphu okuxhumana anesibopho sokudlulisa i-welding current ocingweni njengoba idlula ukuze idale i-arc. Ngokufanelekile, intambo kufanele idlule ngokumelana okuncane, kuyilapho igcina ukuthintana kukagesi.
Amathiphu okuxhumana angenza umehluko omkhulu phakathi kokusebenzisa inqubo yokushisela ephumelelayo kanye nokuqongelela isikhathi sokuphumula ukuze kulungiswe izinkinga, futhi angathinta nenzuzo yokusebenza kokushisela.
Ngaleso sizathu, kuhlale kubalulekile ukukhetha ithiphu lokuxhumana lekhwalithi ephezulu. Nakuba le mikhiqizo ingase ibize ngaphezudlwana kwemikhiqizo yezinga eliphansi, kunevelu yesikhathi eside yokuphikisa leyo ntengo yokuthenga kusengaphambili.
Ngaphezu kwalokho, izeluleko zokuxhumana zekhwalithi ephezulu zivame ukwenziwa ngomshini ukuze kuqine ukubekezelelana kwemishini, okudala ukuxhumana okungcono okushisayo nogesi. Zingase futhi zibe ne-centre bore ebushelelezi, okuholela ekungqubuzaneni okuncane njengoba ucingo ludlula. Lokho kusho ukuphakelwa kwezintambo okungaguquki ngokuhudula okuncane, okususa izinkinga zekhwalithi ezingaba khona.
Amathiphu okuxhumana ekhwalithi ephezulu angasiza futhi ekunciphiseni ukusha (ukwakheka kwe-weld ngaphakathi kwethiphu yokuxhumana) futhi asize ukuvimbela i-arc engalungile ebangelwa ukungahambi kahle kukagesi. Avame ukuhlala isikhathi eside.
Ukukhetha impahla efanele kanye nosayizi bore
Amathiphu okuxhumana asetshenziselwa ukushisela i-MIG okuzenzakalelayo ngokuvamile akhiwa ngethusi. Le nto ihlinzeka nge-conductivity enhle eshisayo nekagesi ukuze ivumele ukudluliswa kwamanje okungaguquki ocingweni, kuyilapho iqinile ngokwanele ukumelana nokushisa okukhiqizwa phakathi nenqubo yokushisela. Ngokushisela i-robotic, ezinye izinkampani zikhetha ukusebenzisa amathiphu okuxhumana we-chrome zirconium esindayo, njengoba lezi zinzima kunezethusi futhi zimelana kangcono nokukhuphuka kwe-arc-on isikhathi sohlelo lokusebenza oluzenzakalelayo.
Ezimweni eziningi, ukusebenzisa ithiphu yokuxhumana efana nosayizi wocingo kuholela emiphumeleni engcono kakhulu. Kodwa-ke, lapho ucingo luphakelwa esigubhu (isb. lawo maphawundi angama-500 nangaphezulu) kanye/noma lapho kusetshenziswa intambo eqinile, ithiphu lokuxhumana elinobukhulu obungaphansi lingathuthukisa ukusebenza kokushisela. Ngenxa yokuthi intambo evela esigubhu ivama ukuba nokusakazwa okuncane, idla ngephuzu lokuxhumana ngaphandle kokuthintwa okuncane noma kungabi khona nhlobo — ukuba nebhore elincane kunikeza ingcindezi eyengeziwe ocingweni, okudala ukuqhutshwa kukagesi okukhulu. Ukunciphisa ithiphu lokuxhumana, nokho, kungakhuphula ukungqubuzana, okuholela ekuphakeleni ngocingo okunephutha futhi, okungenzeka, kubuye kushe.
Ngokuphambene, ukusebenzisa ithiphu elikhulu kakhulu kungehlisa ukudluliswa kwamanje futhi kwenyuse amazinga okushisa athiphu, okungaholela nasekushisweni kwentambo. Uma ungabaza ngokukhetha ithiphu yokuxhumana nosayizi ofanele, thintana nomkhiqizi othembekile osebenzisekayo noma umsabalalisi wokushisela.
Njengomkhuba ongcono kakhulu, hlala uhlola ukuxhumana phakathi kwethiphu yokuxhumana nesixhumi segesi ukuze uqiniseke ukuthi sivikelekile. Ngokuvumelana nalokho, ukuxhumana okuvikelekile kunciphisa ukumelana nogesi okungaholela ekushiseni ngokweqile.
Ukuqonda ikhefu lethiphu yokuxhumana
Ikhefu lethiphu yokuxhumana lisho indawo yethiphu yokuxhumana phakathi kwembozo futhi kuyisici esibalulekile esithonya ikhwalithi yokushisela, ukukhiqiza kanye nezindleko emsebenzini wokushisela. Ikakhulukazi, ikhefu lethiphu elilungile lokuxhumana linganciphisa ithuba le-spatter eyeqile, i-porosity kanye nokushiswa noma ukulwa nezinto ezizacile. Kungasiza futhi ukunciphisa ukushisa okukhazimulayo okungabangela ukwehluleka kwethiphu lokuxhumana ngaphambi kwesikhathi.
Ikhefu lethiphu yokuxhumana lithinta ngokuqondile i-wire stickout, ebizwa nangokuthi isandiso se-electrode. Uma ikhefu lilikhulu, i-sticker iba yinde futhi i-voltage iphezulu. Ngenxa yalokho, lokhu kwenza i-arc izinze kancane. Ngaleso sizathu, i-wire stickout ehamba phambili ngokuvamile iyona emfushane kakhulu evunyelwe kuhlelo lokusebenza; inikeza i-arc ezinzile kanye nokungena okungcono kwe-low-voltage. Izikhundla zethiphu evamile yokuxhumana ikhefu elingu-1/4-intshi, ikhefu elingu-1/8-intshi, i-flush kanye nesandiso esingu-1/8-intshi. Bheka Umfanekiso 1 ngezinhlelo zokusebenza ezinconyiwe ngayinye.
| Ikhefu/Isandiso | I-Amperage | I-wire Stick-Out | Inqubo | Amanothi |
| 1/4-in. Ikhefu | > 200 | 1/2 – 3/4in. | Futha, i-high-current pulse | Izintambo ezinezintambo zensimbi, ukudluliswa kwesifutho, igesi exubile ecebile nge-argon |
| 1/8-in. Ikhefu | > 200 | 1/2 – 3/4in. | Futha, i-high-current pulse | Izintambo ezinezintambo zensimbi, ukudluliswa kwesifutho, igesi exubile ecebile nge-argon |
| Flush | <200 | 1/4 – 1/2in. | I-Short-current, low-current pulse | Ukugxila kwe-argon ephansi noma amaphesenti angu-100 CO2 |
| 1/8-in. Isandiso | <200 | 1/4 phakathi. | I-Short-current, low-current pulse | Amalunga okunzima ukuwafinyelela |
Inweba impilo yethiphu yokuxhumana
Ukwehluleka kwethiphu lokuxhumana kungase kube umphumela wethonya elithile, okuhlanganisa ukusha, ukuguga kwemishini nogesi, indlela yomqhubi we-welding engasebenzi kahle (isb., ukuhluka kwe-angle yesibhamu kanye nethiphu-to-work-distance [CTWD]), kanye nokushisa okuvela endaweni. izinto eziyisisekelo, ezivamile ekufinyeleleni okuqinile kwamajoyinti we-weld noma izindawo ezivaliwe.
Ikhwalithi yocingo olusetshenziswayo ingase ibe nomthelela empilweni yethiphu yokuxhumana. Intambo yekhwalithi engeyinhle ivamise ukuba ne-cast engathandeki noma i-helix engabangela ukuthi idle ngendlela engafanele. Lokho kungavimbela intambo kanye nethiphu yokuxhumana ukuthi ingaxhunywanga kahle ngebhore, okuholela ekudunyisweni okuphansi kanye nokumelana nogesi okuphezulu. Lezi zinkinga zingaholela ekuhlulekeni kwethiphu lokuxhumana ngaphambi kwesikhathi ngenxa yokushisa ngokweqile, kanye nekhwalithi ye-arc empofu. Ukwelula impilo yethiphu yokuxhumana, naka lokhu okulandelayo:
• Sebenzisa ama-drive rolls afanele ukuze uqinisekise ukudla okubushelelezi ngocingo.
• Nyusa isivinini sokuphakela kwezintambo futhi welule i-CTWD ukuze unciphise ukusha.
• Khetha amathiphu okuxhumana anendawo ebushelelezi ukuze ugweme ukunqanyulwa kwentambo.
• Nquma i-MIG gun liner ibe ubude obufanele ukuze ucingo lungene kahle.
• Amazinga okushisa aphansi okusebenza, uma kungenzeka, ukunciphisa ukuguga kukagesi.
• Sebenzisa izintambo zikagesi ezimfishane uma kungenzeka ukuze uthole ukudla okubushelelezi ngocingo. Uma izintambo zikagesi ezinde zidingeka, zama ukunciphisa izihibe kuzo ukuze uvimbele i-kinking.
Kwezinye izimo, kungase kufiseleke ukuguqulela kusibhamu se-MIG esipholile ngamanzi ukuze usize ukugcina izinto ezisetshenziswayo ezingaphambili, okuhlanganisa ithiphu yokuxhumana, okupholile nokusebenza isikhathi eside.
Izinkampani kufanele futhi zicabange ukulandelela ukusetshenziswa kwazo kwamathiphu okuxhumana, ziqaphele ushintsho oludlulele futhi zikhulume ngokufanele ngezinye zezinyathelo zokuphepha eziphakanyisiwe. Ukubhekana nalesi sikhathi sokunciphisa ngokushesha kunakamuva kungahamba kude ekusizeni izinkampani zehlise izindleko ezingadingekile zokusungula, kuyilapho kuthuthukisa ikhwalithi nokukhiqiza.
Isikhathi sokuthumela: Jan-04-2023
