1. Izinto eziyimfuneko zobugcisa ze-argonwelding tungsten arc
1.1 Ukukhethwa komatshini we-welding we-tungsten argon arc kunye ne-polarity yamandla
I-TIG inokohlulwa ibe yi-DC kunye ne-AC pulses.I-DC pulse TIG isetyenziselwa ikakhulu ukuwelda intsimbi, intsimbi ethambileyo, intsimbi ekwaziyo ukumelana nobushushu, njl. njl., kunye ne-AC pulse TIG isetyenziselwa ukuwelda iintsimbi ezikhanyayo ezifana ne-aluminiyam, i-magnesium, ubhedu kunye ne-alloys yazo.Zombini i-AC kunye ne-DC pulses zisebenzisa unikezelo lwamandla oluneempawu zokuhla komnqantsa, kunye ne-TIG yewelding yamaphepha entsimbi ahlala esebenzisa udibaniso oluhle lwe-DC.
1.2 Izinto eziyimfuneko zobugcisa ze-argon tungsten arc welding manual
1.2.1 Ukubetha kweArc
Kukho iindidi ezimbini zokuvutha kwe-arc: ukungadibanisi kunye nokudibanisa i-arc i-short-circuit arc ignition.I-electrode yangaphambili ayidibanisi ne-workpiece kwaye ifanelekile zombini i-DC kunye ne-AC welding, ngelixa le yokugqibela ifanelekile kuphela kwi-DC welding.Ukuba indlela ye-short-circuit isetyenziselwa ukubetha i-arc, i-arc ayifanele iqalwe ngokuthe ngqo kwi-weldment, kuba kulula ukubangela ukufakwa kwe-tungsten okanye ukudibanisa kunye ne-workpiece, i-arc ayikwazi ukuzinziswa ngokukhawuleza, kwaye i-arc ilula ukungena kwizinto ezisisiseko, ngoko ke kufuneka kusetyenziswe ipleyiti yokubetha kwe-arc.Beka ipleyiti yobhedu ebomvu ecaleni kwendawo ye-arc, qalisa i-arc kuyo kuqala, kwaye emva koko uye kwindawo ukuze idityaniswe emva kokuba incam ye-tungsten ifudunyezwe kwiqondo lokushisa elithile.Kwimveliso yangempela, i-TIG idla ngokusebenzisa i-arc starter ukuqala i-arc.Ngaphantsi kwesenzo se-pulse current, i-argon gas i-ionized ukuqalisa i-arc.
1.2.2 I-welding ye-tack
Ngexesha le-welding, ucingo lwe-welding kufuneka lube luncinci kunocingo oluqhelekileyo lwe-welding.Ngenxa yobushushu obuphantsi kunye nokupholisa ngokukhawuleza ngexesha lokuwelda, i-arc ihlala ixesha elide, ngoko kulula ukuyitshisa.Xa usenza i-spot welding, ucingo lwe-welding kufuneka lubekwe kwindawo ye-welding yendawo, kwaye i-arc izinzile Emva koko uye kwi-welding wire, kwaye umise i-arc ngokukhawuleza emva kokuba ucingo lwe-welding luyancibilika kunye ne-fuses ngesiseko sesinyithi kumacala omabini.
1.2.3 Ukuwelda okuqhelekileyo
Xa i-TIG eqhelekileyo isetyenziselwa ukuwelda amashiti ensimbi engenasici, okwangoku ithatha ixabiso elincinci, kodwa xa okwangoku ingaphantsi kwe-20A, i-arc drift ilula ukwenzeka, kwaye ubushushu bendawo ye-cathode buphezulu kakhulu, nto leyo eya kubangela ilahleko yobushushu. kwindawo ye-welding kunye neemeko zokukhutshwa kwe-electron embi, okubangelwa indawo ye-cathode ihlala ixhuma kwaye kunzima ukugcina i-soldering eqhelekileyo.Xa i-TIG ye-pulsed isetyenzisiweyo, i-peak current inokwenza i-arc izinzile, i-directivity ilungile, kwaye isiseko sesinyithi silula ukunyibilika kunye nefom, kwaye imijikelezo iyatshintshwa ukuze kuqinisekiswe inkqubela phambili yenkqubo ye-welding.iiwelds.
2. Uhlalutyo lwe-Weldability lweshidi lensimbi engenasici
Iimpawu ezibonakalayo kunye nokuma kwephepha lensimbi engenasici lichaphazela ngokuthe ngqo umgangatho we-weld.Ishidi lensimbi engenasici line-conductivity encinci ye-thermal kunye ne-coefficient enkulu yokwandisa umgca.Xa ubushushu be-welding butshintsha ngokukhawuleza, uxinzelelo lwe-thermal oluveliswayo lukhulu, kwaye kulula ukubangela ukutshisa, ukuchithwa kunye nokuguqulwa kwamaza.Ukuwelda kwamashiti entsimbi engatyiwa kusetyenziswa kakhulu ukuwelda ngeempundu ezisicaba.Idama elinyibilikisiweyo lichatshazelwa ikakhulu yi-arc force, umxhuzulane wesinyithi sedama elinyibilikisiweyo kunye nokuxinana komphezulu wesinyithi sedama elinyibilikisiweyo.Xa umthamo, umgangatho kunye nobubanzi obutyhidiweyo besinyithi sechibi esityhidiweyo sihlala sihlala, ubunzulu bedama elityhidiweyo buxhomekeke kwi-arc.Ubungakanani, ubunzulu bokungena kunye ne-arc force inxulumene ne-welding yangoku, kwaye ububanzi be-fusion bunqunywe ngumbane we-arc.
Okukhona umkhulu umthamo wedama elinyibilikisiweyo, kokukhona kukho ukuxinana komphezulu.Xa ukuxinana komphezulu kungenakulinganisa amandla e-arc kunye nobunzima besinyithi esityhidiweyo sechibi, kuya kubangela ukuba i-pool etyhidiweyo itshise, kwaye iya kufudumeza kwaye ipholile kwindawo ngexesha lenkqubo ye-welding, ebangela ukuba i-weldment ibe noxinzelelo lwe-Inhomogeneous kunye noxinzelelo, xa i-longitudinal yokunciphisa i-weld seam ibangela uxinzelelo kwincam yepleyiti ebhityileyo ukuba idlule ixabiso elithile, iya kuvelisa i-deformation enzima kakhulu kwaye ichaphazele umgangatho wemilo ye-workpiece.Ngaphantsi kwendlela ye-welding efanayo kunye neeparitha zenkqubo, iimilo ezahlukeneyo ze-tungsten electrode zisetyenziselwa ukunciphisa igalelo lobushushu kwi-welding joint, enokusombulula iingxaki zokutshiswa kwe-weld kunye ne-workpiece deformation.
3. Ukusetyenziswa kwe-tungsten manual argon arc welding in stainless steel sheet welding
3.1 Umgaqo weWelding
I-Argon tungsten arc welding luhlobo lwe-arc yokuwelda evulekileyo ene-arc ezinzileyo kunye nobushushu obunzulu.Ngaphantsi kokukhuselwa kwegesi ye-inert (i-argon gas), i-pool ye-welding ihlambulukile kwaye umgangatho we-weld seam ulungile.Nangona kunjalo, xa welding steel stainless, ingakumbi austenitic stainless steel, ngasemva weld kufuneka kwakhona ukukhuselwa, kungenjalo oxidation olunzulu kuya kwenzeka, nto leyo eya kuchaphazela ukubunjwa weld kunye nokusebenza welding.
3.2 Iimpawu zokuwelda
I-welding yamaphepha ensimbi engenasici inezi mpawu zilandelayo:
I-1) I-conductivity ye-thermal yephepha lensimbi engenasici lihlwempu, kwaye kulula ukutshisa ngokuthe ngqo.
2) Akukho cingo lwe-welding olufunekayo ngexesha le-welding, kwaye isiseko sesinyithi sixutywe ngokuthe ngqo.
Ngoko ke, umgangatho we-stainless sheet welding welding uhambelana ngokusondeleyo nezinto ezifana nabaqhubi, izixhobo, izinto eziphathekayo, iindlela zokwakha, indawo yangaphandle kunye nokuvavanya ngexesha le-welding.
Kwinkqubo ye-welding ye-stainless steel sheets, i-welding consumables ayifuni, kodwa iimfuno zezi zinto zilandelayo ziphezulu kakhulu: enye kukucoceka kwegesi ye-argon, izinga lokuhamba kunye nexesha lokuhamba kwe-argon, kwaye enye yi-tungsten. i-electrode.
1) Argon
I-Argon yigesi ye-inert, kwaye akulula ukusabela kunye nezinye izinto zetsimbi kunye neegesi.Ngenxa yomphumo wokupholisa we-airflow yayo, indawo echaphazelekayo yokushisa i-weld encinci, kwaye i-deformation ye-weldment encinci.Yeyona gasi ikhuselayo yeargon tungsten arc welding.Ukucoceka kwe-argon kufuneka kube ngaphezu kwe-99.99%.Argon ikakhulu isetyenziselwa ngempumelelo ukukhusela ichibi elinyibilikisiweyo, ukuthintela umoya ekukhukuliseni ichibi elinyibilikisiweyo kwaye kubangele oxidation ngexesha lenkqubo welding, kwaye kwangaxeshanye ngempumelelo ukwahlula indawo weld emoyeni, ukuze indawo weld ikhuselwe kwaye ukusebenza kwe-welding kuphuculwe.
2) Tungsten electrode
Umphezulu we-electrode ye-tungsten kufuneka ube mpuluswa, kwaye isiphelo kufuneka silolwe ngokugxilwa kakuhle.Ngale ndlela, i-arc-frequency arc ignition ilungile, uzinzo lwe-arc lulungile, ubunzulu be-welding bunzulu, ichibi elityhidiweyo linokugcinwa lizinzile, i-weld seam yenziwe kakuhle, kunye nomgangatho wokuwelda ulungile.Ukuba ubuso be-electrode ye-tungsten butshiswa okanye kukho iziphene ezinjengokungcola, ukuqhekeka, kunye ne-shrinkage cavities ebusweni, kuya kuba nzima ukuqala i-arc-frequency arc ngexesha le-welding, i-arc iya kungazinzi, i-arc iya kuba nzima. ukukhukuliseka, idama elityhidiweyo liya kusasazeka, umphezulu uya kwanda, ubunzulu bokungena buya kuba nzulu, kwaye i-weld seam iya konakaliswa.Ukubunjwa kakubi, umgangatho ophantsi we-welding.
4 Isiphelo
1) Ukuzinza kwe-argon tungsten arc welding kulungile, kwaye iimilo ze-electrode ezahlukeneyo ze-tungsten zinempembelelo enkulu kumgangatho we-welding wamaphepha ensimbi engenasici.
I-2) I-tungsten electrode welding kunye ne-flat top kunye ne-conical tip inokuphucula izinga lokubunjwa kwe-welding-sided welding kunye ne-welding-sided welding, ukunciphisa indawo echaphazelekayo yokushisa i-welding, i-weld shape intle, kunye neempawu zomatshini ezibanzi zingcono.
I-3) Ukusebenzisa indlela ye-welding echanekileyo kunokuthintela ngokufanelekileyo iziphene ze-welding.
Ixesha lokuposa: Jul-18-2023