Indlela yokukhetha i-DC kunye ne-AC kwi-welding?

Ukuwelda kunokusebenzisa umatshini wokuwelda 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.

Ukukhethwa kwe-welding consumables-TQ03

(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 izinzile, i-weld shape egqwesileyo, kunye nokunciphisa i-spatter, i-CO2 i-gas ekhuselwe i-welding ngokubanzi isebenzisa uxhumano 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.

TIG welding-1

(5)Welding steel stainless

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 ukunciphisa 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.

i-submerged-arc-welding-SAW-1


Ixesha lokuposa: May-25-2023

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