Ukuwelda kunokusebenzisa umatshini we-welding we-AC okanye we-DC.Xa usebenzisa umatshini we-welding we-DC, kukho uxhulumaniso oluhle kunye noqhagamshelo olubuyela umva.Izinto ezifana ne-electrode esetyenzisiweyo, imeko yezixhobo zokwakha, kunye nomgangatho we-welding kufuneka ziqwalaselwe.
Xa kuthelekiswa nonikezelo lwamandla e-AC, umbane we-DC unokubonelela nge-arc ezinzileyo kunye nokudluliselwa kwe-droplet egudileyo.– Emva kokuba i-arc ivutha, i-DC arc inokugcina ukuvutha okuqhubekayo.
Xa usebenzisa i-AC power welding, ngenxa yokutshintshwa kwendlela yangoku kunye ne-voltage direction, kwaye i-arc idinga ukucinywa kwaye iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphindwe ngamaxesha angama-120 ngesibini, i-arc ayikwazi ukutshisa ngokuqhubekayo kunye nokuzinza.
Kwimeko ye-welding ephantsi yangoku, i-DC arc inesiphumo esihle sokumanzisa kwintsimbi etyhidiweyo ye-weld kwaye inokulawula ubungakanani bentsimbi ye-weld, ngoko ifaneleke kakhulu kwiindawo ezibhityileyo.Amandla e-DC afaneleke ngakumbi kwi-welding engaphezulu kunye nethe nkqo kunamandla e-AC kuba i-DC arc imfutshane.
Kodwa ngamanye amaxesha ukuvuthuza kwe-arc yobonelelo lwamandla e-DC yingxaki ebonakalayo, kwaye isisombululo kukuguqula umbane we-AC.Kwi-AC kunye ne-DC ye-electrode eneenjongo ezimbini eyenzelwe ukuwelda amandla e-AC okanye i-DC, uninzi lwezicelo ze-welding zisebenza ngcono phantsi kweemeko zamandla e-DC.
(1)Ukuwelda kwentsimbi yesakhiwo eqhelekileyo
Kwii-electrode zentsimbi eziqhelekileyo kunye nee-electrode ze-asidi, zombini i-AC kunye ne-DC ingasetyenziswa.Xa usebenzisa umatshini we-DC welding ukuwelda iipleyiti ezibhityileyo, kungcono ukusebenzisa uqhagamshelo lwe-DC reverse.
Ngokubanzi, uqhagamshelo lwangoku oluthe ngqo lunokusetyenziselwa ukuwelda ipleyiti eshinyeneyo ukufumana ukungena okukhulu.Ewe kunjalo, uqhagamshelo oluthe ngqo lwangoku lunokwenzeka, kodwa ukuxhasa i-welding yeeplate ezishinyeneyo ezinegrooves, kusengcono ukusebenzisa uqhagamshelo oluthe ngqo lwangoku.
Ii-electrode ezisisiseko zisebenzisa i-DC reverse connection, enokunciphisa i-porosity kunye ne-spatter.
(2)Ukuwelda kwe-argon arc (welding ye-MIG)
I-Metal arc welding ngokubanzi isebenzisa uxhumano lwe-DC reverse, olungazinzisi nje kuphela i-arc, kodwa lususa ifilimu ye-oxide kumphezulu we-weldment xa udibanisa i-aluminium.
(3) iTungsten argon welding (welding yeTIG)
I-Tungsten argon arc welding yentsimbi, i-nickel kunye ne-alloys yayo, ubhedu kunye ne-alloys yayo, ubhedu kunye ne-alloys yayo inokudibaniswa kuphela ngoku ngokuthe ngqo.Isizathu kukuba ukuba uxhulumaniso lwe-DC luguqulwa kwaye i-electrode ye-tungsten ixhunywe kwi-electrode efanelekileyo, ukushisa kwe-electrode efanelekileyo kuya kuba phezulu, ukushisa kuya kuba ngaphezulu, kwaye i-electrode ye-tungsten iya kunyibilika ngokukhawuleza.
Ukunyibilika okukhawulezayo kakhulu, ayikwazi ukwenza i-arc ivuthe ngokuzinzileyo ixesha elide, kunye ne-tungsten etyhidiweyo ewela kwi-pool etyhidiweyo iya kubangela ukubandakanywa kwe-tungsten kunye nokunciphisa umgangatho we-weld.
(4)I-CO2 yegesi ekhuselwe ukuwelda (i-MAG yokuwelda)
Ukuze ugcine i-arc izinzileyo, i-weld shape egqwesileyo, kunye nokunciphisa i-spatter, i-CO2 i-gas ekhuselwe i-welding ngokubanzi isebenzisa uxhulumaniso lwe-DC reverse .Nangona kunjalo, ekufakeni i-welding kunye nokulungiswa kwe-welding yentsimbi, kuyimfuneko ukwandisa izinga lokubeka isinyithi kunye nokunciphisa. ukufudumeza i-workpiece, kunye nodibaniso oluhle lwe-DC luhlala lusetyenziswa.
I-electrode yensimbi engenasici ikhethwa ukuba i-DC iguqulwe.Ukuba awunawo umatshini we-DC welding kwaye iimfuno zomgangatho aziphezulu kakhulu, ungasebenzisa i-electrode yohlobo lwe-Chin-Ca ukuwelda ngomatshini wokuwelda we-AC.
(6)Lungisa i-welding yentsimbi
Ukulungiswa kwe-welding ye-cast iron parts ngokuqhelekileyo yamkela indlela yokudibanisa i-DC reverse.Ngexesha le-welding, i-arc izinzile, i-spatter incinci, kwaye ubunzulu bokungena bunzulu, obuhlangabezana nje neemfuno zezinga eliphantsi lokuhlanjululwa kwe-welding yokulungisa isinyithi ukuze kuncitshiswe ukubunjwa kokuqhekeka.
(7) Ukuntywiliselwa kwe-arc okuzenzekelayo
Ukuwelda okuzenzekelayo kwe-arc kunokudityaniswa nonikezelo lwamandla lwe-AC okanye lwe-DC.Ikhethwe ngokweemfuno ze-welding yemveliso kunye nohlobo lwe-flux.Ukuba i-nickel-manganese low-silicon flux isetyenzisiwe, ukuwelda kombane we-DC kufuneka kusetyenziswe ukuqinisekisa ukuzinza kwe-arc ukufumana ukungena okukhulu.
(8) Ukuthelekisa phakathi kwe-AC welding kunye ne-DC welding
Xa kuthelekiswa nonikezelo lwamandla e-AC, umbane we-DC unokubonelela nge-arc ezinzileyo kunye nokudluliselwa kwe-droplet egudileyo.– Emva kokuba i-arc ivutha, i-DC arc inokugcina ukuvutha okuqhubekayo.
Xa usebenzisa i-AC power welding, ngenxa yokutshintshwa kwendlela yangoku kunye ne-voltage direction, kwaye i-arc idinga ukucinywa kwaye iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphindwe ngamaxesha angama-120 ngesibini, i-arc ayikwazi ukutshisa ngokuqhubekayo kunye nokuzinza.
Kwimeko ye-welding ephantsi yangoku, i-DC arc inesiphumo esihle sokumanzisa kwintsimbi etyhidiweyo ye-weld kwaye inokulawula ubungakanani bentsimbi ye-weld, ngoko ifaneleke kakhulu kwiindawo ezibhityileyo.Amandla e-DC afaneleke ngakumbi kwi-welding engaphezulu kunye nethe nkqo kunamandla e-AC kuba i-DC arc imfutshane.
Kodwa ngamanye amaxesha ukuvuthuza kwe-arc yobonelelo lwamandla e-DC yingxaki ebonakalayo, kwaye isisombululo kukuguqula umbane we-AC.I-AC kunye ne-DC ye-electrode eneenjongo ezimbini eyenzelwe i-AC okanye i-DC amandla welding, uninzi lwezicelo ze-welding zisebenza ngcono phantsi kweemeko zamandla e-DC.
Kwiwelding ye-arc manual, oomatshini bokuwelda be-AC kunye nezinye izixhobo ezongezelelweyo zitshiphu, kwaye zinokunqanda iziphumo ezinobungozi zokuvuthela kwe-arc ngamandla kangangoko kunokwenzeka.Kodwa ukongeza kwiindleko zezixhobo ezisezantsi, ukuwelda ngamandla e-AC akusebenzi njengamandla eDC.
Imithombo yamandla e-arc welding (CC) eneempawu zokuwisa umnqantsa ifaneleke kakhulu kwi-arc welding eyenziwa ngesandla.Utshintsho kwi-voltage ehambelana notshintsho lwangoku lubonisa ukuhla ngokuthe ngcembe kwangoku njengoko ubude be-arc bukhula.Olu phawu lunciphisa ubuninzi be-arc yangoku nokuba i-welder ilawula ubungakanani bedama elinyibilikisiweyo.
Utshintsho oluthe rhoqo kubude be-arc alunakuphepheka njengoko i-welder ihambisa i-electrode ecaleni kwe-weldment, kwaye uphawu lokudipha lomthombo wamandla we-arc welding luqinisekisa ukuzinza kwe-arc ngexesha lolu tshintsho.
Ixesha lokuposa: May-25-2023