【Abstract】I-Tungsten inert gas welding iyindlela ebaluleke kakhulu yokushisela ekukhiqizeni izimboni zesimanje. Leli phepha lihlaziya ukucindezeleka kwechibi lokushisela leshidi lensimbi engagqwali kanye nokuwohloka kokushisela kwepuleti elincanyana, futhi lethula izinto ezibalulekile zenqubo yokushisela kanye nokusetshenziswa okungokoqobo kokushiselwa kwegesi ye-tungsten inert yamapuleti amancane ensimbi engagqwali.
Isingeniso
Ngokuthuthuka okuqhubekayo kwemboni yokukhiqiza yesimanje, amapuleti ensimbi engenasici asetshenziswa kabanzi kwezokuvikela, ezondiza, embonini yamakhemikhali, ezobuchwepheshe kanye nezinye izimboni, kanye nokushiselwa kwamapuleti ensimbi engenasici angu-1-3mm nakho kuyakhula. Ngakho-ke, kubaluleke kakhulu ukwazi kahle inqubo ebalulekile yensimbi engagqwali emincane yokushisela ipuleti.
I-Tungsten inert gas welding (TIG) isebenzisa i-pulsed arc, enezici zokufaka ukushisa okuphansi, ukushisa okugxilile, indawo encane ethintekile ukushisa, ukuguqulwa kwe-welding encane, ukufaka ukushisa okufanayo, nokulawula okungcono kwamandla omugqa; ukugeleza komoya okuvikelayo kunomphumela wokupholisa ngesikhathi sokushisela, okunganciphisa izinga lokushisa elingaphezulu kwechibi elincibilikisiwe futhi kwandise ukungezwani okungaphezulu kwechibi elincibilikisiwe; I-TIG iyasebenza kalula, kulula ukubona isimo sechibi elincibilikisiwe, amashisela aminyene, izakhiwo ezinhle zemishini, nokwakheka okuhle kwendawo. Njengamanje, i-TIG isetshenziswa kabanzi ezimbonini ezahlukahlukene, ikakhulukazi ekushiseleni amapuleti ensimbi engenasici.
1. Izinto ezibalulekile zobuchwepheshe zokushisela igesi ye-tungsten inert
1.1 Ukukhethwa komshini wokushisela igesi ye-tungsten inert kanye ne-polarity yamandla
I-TIG ingahlukaniswa ibe yi-DC kanye ne-AC pulses. I-DC pulse TIG isetshenziselwa kakhulu ukushisela insimbi, insimbi emnene, insimbi engashisi, njll., futhi i-AC pulse TIG isetshenziselwa kakhulu ukushisela izinsimbi ezikhanyayo ezifana ne-aluminium, i-magnesium, ithusi nama-alloys ayo. Womabili ama-pulses e-AC kanye ne-DC asebenzisa amandla esici esiwayo. I-TIG yokushisela amapuleti ensimbi engenasici ngokuvamile isebenzisa uxhumano oluhle lwe-DC.
1.2 Izinto ezidingekayo zobuchwepheshe zokushisela igesi ye-tungsten enert esebenzayo
1.2.1 Ukuqala kwe-arc
Ukuqala kwe-arc kunezinhlobo ezimbili: ukungathinteki kanye nokuqala kwe-arc yesifunda esifushane. Eyangaphambili ayinakho ukuthintana phakathi kwe-electrode kanye ne-workpiece, efanelekile kokubili i-DC ne-AC welding, kanti lena yokugcina ifaneleka kuphela i-DC welding. Uma indlela ye-short-circuit isetshenziselwa ukuqala i-arc, i-arc akufanele iqalwe ngokuqondile kwi-weldment, ngoba kulula ukukhiqiza i-tungsten clamping noma ukunamathela nge-workpiece, i-arc ayikwazi ukuzinza ngokushesha, futhi i-arc ilula. ukugqobhoza indaba yomzali. Ngakho-ke, ipuleti lokuqala le-arc kufanele lisetshenziswe. Ipuleti lethusi kufanele libekwe eduze kwendawo yokuqala ye-arc. I-arc kufanele iqalwe kuyo kuqala, bese ikhanda le-electrode ye-tungsten kufanele lishiswe ekushiseni okuthile ngaphambi kokuthuthela engxenyeni ezoshiselwa. Ekukhiqizeni kwangempela, i-TIG ivame ukusebenzisa i-arc starter ukuze iqale i-arc. Ngaphansi kwesenzo se-high-frequency current noma i-high-voltage pulse current, igesi ye-argon i-ionized futhi i-arc iqalile.
1.2.2 Ukubeka ukushisela
Ngesikhathi sokubeka i-welding, ucingo lokushisela kufanele lube luncane kunocingo oluvame ukusetshenziswa. Ngenxa yokuthi izinga lokushisa liphansi futhi ukupholisa kuyashesha ngesikhathi sokushisela, i-arc ihlala isikhathi eside, ngakho kulula ukuyishisa. Lapho wenza i-spot fixed position welding, ucingo lokushisela kufanele lubekwe endaweni yokushisela, futhi i-arc kufanele ihanjiswe ocingweni lokushisela ngemva kokuzinza. Ngemuva kokuthi intambo yokushisela incibilike futhi ihlanganiswe nezinto zomzali ezinhlangothini zombili, i-arc iyamiswa ngokushesha.
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1.2.3 Ukushisela okujwayelekile
Uma i-TIG evamile isetshenziselwa ukushisela i-stainless steel sheet, okwamanje ithathwa njengenani elincane. Kodwa-ke, lapho i-current ingaphansi kuka-20A, i-arc drift kulula ukwenzeka, futhi izinga lokushisa lendawo ye-cathode liphezulu kakhulu, okuzobangela ukushisa nokushiswa kwendawo yokushisela futhi kubi nezimo zokukhishwa kwe-electron, kubangele indawo ye-cathode ukuthi igxume ngokuqhubekayo. , okwenza kube nzima ukugcina i-welding evamile. Uma i-pulse TIG isetshenziswa, umthamo wamanje ophakeme ungenza i-arc izinze futhi ibe nokuqondisa okuhle, okwenza kube lula ukuncibilikisa ukwaziswa komzali nokuyakha, nokushintshana ngomjikelezo ukuze kuqinisekiswe ukuqhubeka kahle kwenqubo yokushisela, ukuze uthole i-weld. ngokusebenza kahle, ukubukeka okuhle, namachibi ancibilikisiwe agqagqene.
2. Ukuhlaziywa kokushisela kweshidi lensimbi engagqwali
Izakhiwo ezibonakalayo kanye nokuma kwepuleti leshidi lensimbi engagqwali kuthinta ngqo ikhwalithi ye-weld. Ishidi lensimbi engagqwali line-conductivity encane eshisayo kanye ne-coefficient enkulu yomugqa wokunweba. Lapho izinga lokushisa lokushisela lishintsha ngokushesha, ukucindezeleka okushisayo okukhiqizwayo kukhulu, futhi kulula ukuvutha, ukusika phansi kanye nokuguqulwa kwamagagasi. Ukushisela amashidi ensimbi engagqwali ngokuvamile kusebenzisa i-flat plate butt welding. Ichibi elincibilikisiwe lithinteka kakhulu amandla e-arc, amandla adonsela phansi ensimbi yechibi elincibilikisiwe kanye nokushuba kwangaphezulu kwensimbi yechibi elincibilikisiwe. Lapho umthamo, ubukhulu nobubanzi obuncibilikisiwe bensimbi yechibi elincibilikisiwe buhlala njalo, ukujula kwechibi elincibilikisiwe kuncike kusayizi we-arc. Ukujula okuncibilikisiwe namandla e-arc kuhlobene namandla okushisela, futhi ububanzi obuncibilikisiwe bunqunywa i-arc voltage.
Uma umkhulu umthamo wechibi elincibilikisiwe, kukhulu ukushuba kwendawo. Uma ukushuba kwendawo kungakwazi ukulinganisa amandla e-arc kanye namandla adonsela phansi ensimbi yechibi elincibilikisiwe, kuzobangela ukuthi ichibi elincibilikisiwe lishise. Ngaphezu kwalokho, i-weldment izoshiswa endaweni futhi ipholile ngesikhathi senqubo yokushisela, okubangela ukucindezeleka okungalingani kanye nokucindezeleka. Lapho ukufinyezwa kwe-longitudinal ye-weld kukhiqiza ukucindezeleka onqenqemeni lwepuleti elincane elidlula inani elithile, kuzokhiqiza ukuguquguquka kwamagagasi okungathí sina, okuthinta ikhwalithi yokubukeka kwendawo yokusebenza. Ngaphansi kwendlela yokushisela efanayo kanye namapharamitha wokucubungula, ukusebenzisa ama-electrode e-tungsten anomumo ohlukene ukuze kuncishiswe okokufaka kokushisa endaweni ehlangene yokushisela kungaxazulula izinkinga ezifana nokushiswa kwe-weld kanye nokuwohloka kwe-workpiece.
3. Ukusetshenziswa kwe-manual tungsten inert gas welding ku-stainless steel sheet welding
3.1 Umgomo wokushisela
I-Tungsten inert gas welding iwukushisela i-arc evulekile ene-arc ezinzile nokushisa okugxilile. Ngaphansi kokuvikelwa kwegesi ye-inert (i-argon), i-welding pool ihlanzekile futhi izinga lokushisela lihle. Nokho, lapho Welding insimbi engagqwali, ikakhulukazi austenitic insimbi engagqwali, ngemuva weld futhi kudingeka uvikelwe, kungenjalo kuzodala oxidation sina, okuthinta ukwakheka weld kanye nokusebenza Welding.
3.2 Izici zokushisela
Ukushiselwa kweshidi lensimbi engagqwali kunezici ezilandelayo:
I-1) I-conductivity eshisayo yeshidi lensimbi engenasici impofu futhi kulula ukuyishisa ngokuqondile.
2) Ayikho intambo yokushisela edingekayo ngesikhathi sokushisela, futhi impahla yomzali ihlanganiswe ngokuqondile.
Ngakho-ke, ikhwalithi ye-stainless steel sheet welding ihlobene eduze nezici ezifana nabaqhubi, imishini, izinto zokwakha, izindlela zokwakha, imvelo yangaphandle ngesikhathi sokushisela nokutholwa.
Enqubweni yokushisela yeshidi lensimbi engagqwali, izinto zokushisela azidingeki, kodwa izinto ezilandelayo ziyadingeka ukuba zibe phezulu: Okokuqala, ukuhlanzeka, izinga lokugeleza kanye nesikhathi sokugeleza kwe-argon yegesi ye-argon, futhi okwesibili, i-tungsten electrode.
1) I-Argon
I-Argon iyigesi engasebenzi futhi akulula ukusabela ngayo nezinye izinto zensimbi namagesi. Ngenxa yokuthi ukugeleza kwayo kwegesi kunomphumela wokupholisa, indawo ethintekile yokushisa ye-weld incane, futhi ukuguqulwa kwe-weld kuncane. Yigesi evikelayo ekahle kakhulu yokushisela i-tungsten inert gas arc. Ukuhlanzeka kwe-argon kumele kube kukhulu kuno-99.99%. I-Argon isetshenziselwa ukuvikela ngokuphumelelayo ichibi elincibilikisiwe, ukuvimbela umoya ekugugulekeni kwechibi elincibilikisiwe futhi kubangele i-oxidation ngesikhathi sokushisela, futhi ihlukanise ngokuphumelelayo indawo yokushisela emoyeni, ukuze indawo yokushisela ivikelwe futhi ukusebenza kokushisela kuthuthukiswe.
2) I-electrode ye-Tungsten
Ubuso be-electrode ye-tungsten kufanele bushelelezi, ukuphela kufanele kucijwe, futhi ukugxila kuhle. Ngale ndlela, i-arc ye-high-frequency arc inhle, ukuzinza kwe-arc kuhle, ukujula kokuncibilika kujulile, ichibi elincibilikisiwe lingahlala lizinzile, i-weld yakheka kahle, futhi izinga lokushisela lihle. Uma ingaphezulu le-electrode ye-tungsten ishiswa noma kuneziphambeko ezinjengokungcola, imifantu, izimbobo ezinciphayo, njll. ebusweni, i-high-frequency arc kunzima ukuqala ngesikhathi sokushisela, i-arc ayizinzile, i-arc ine-drift, i-arc ichibi elincibilikisiwe liyahlakazeka, ingaphezulu liyanwetshwa, ukuncibilika akujulile, i-weld yakheke kabi, futhi izinga lokushisela liphansi.
4. Isiphetho
1) I-Tungsten inert gas arc welding inezinzo ezinhle, futhi umumo ohlukile we-electrode we-tungsten unethonya elikhulu kukhwalithi yokushisela yamapuleti amancane ensimbi engagqwali.
2) I-flat-top cone-end tungsten inert electrode welding ingathuthukisa izinga lokubunjwa kwezinhlangothi ezimbili zokushisela ohlangothini olulodwa, inciphise indawo ethintekile ukushisa kwe-welding, yenze i-weld ibe yinhle, futhi ibe nezakhiwo ezinhle zokuhlanganisa.
3) Ukusebenzisa indlela yokushisela efanele kungavimbela ngempumelelo amaphutha e-welding.
Isikhathi sokuthumela: Aug-21-2024
