Intshayelelo kwiNqanaba lokuPholisa kunye neCrystallization kwiMedium Frequency Inverter Spot Welding

I-Medium frequency inverter spot welding yindlela eguquguqukayo nesebenzayo yokuwelda esetyenziswa kumashishini ahlukeneyo. Ngethuba lenkqubo ye-welding, isigaba sokupholisa kunye ne-crystallization sidlala indima ebalulekileyo ekunqumeni iimpawu zokugqibela ze-weld joint. Kweli nqaku, siza kuphonononga kwiinkcukacha zenqanaba lokupholisa kunye necrystallization kwi-medium frequency inverter spot welding.

Inkqubo yokupholisa:
Emva kokuba i-welding current icinyiwe, inkqubo yokupholisa iqala. Ngeli nqanaba, ubushushu obuveliswe ngexesha le-welding buyaphela, kwaye ubushushu bendawo ye-weld buyancipha ngokuthe ngcembe. Izinga lokupholisa lidlala indima ebalulekileyo kuphuhliso lwe-microstructural kunye neempawu zomatshini we-weld joint. Izinga lokupholisa elilawulwayo nelicothayo libalulekile ukuqinisekisa iimpawu ezinqwenelekayo zesinyithi.
Ukuqinisa kunye neCrystallization:
Njengoko i-weld zone iphola, isinyithi esinyibilikisiweyo siguquka sibe sisimo esiqinileyo ngenkqubo yokuqina kunye necrystallization. Ukuqulunqwa kwesakhiwo esiqinileyo kubandakanya i-nucleation kunye nokukhula kweenkozo ze-crystalline. Izinga lokupholisa lichaphazela ubungakanani, ukuhanjiswa, kunye nokuqhelaniswa kwezi nkozo, ezithi, zona, zichaphazele iipropathi zomatshini zejoyinti ye-weld.
Uphuhliso lweMicrostructure:
Inqanaba lokupholisa kunye ne-crystallization lichaphazela kakhulu i-microstructure ye-weld joint. I-microstructure ibonakaliswe ngokucwangciswa, ubungakanani, kunye nokuhanjiswa kweenkozo, kunye nobukho bazo naziphi na izinto ze-alloying okanye izigaba. Izinga lokupholisa limisela iimpawu ze-microstructural, ezifana nobukhulu beenkozo kunye nokwakhiwa kwesigaba. Isantya sokupholisa esicothayo sikhuthaza ukukhula kweenkozo ezinkulu, ngelixa isantya sokupholisa ngokukhawuleza sinokubangela ukwakheka kweenkozo ezicolekileyo.
Uxinzelelo olushiyekileyo:
Ngexesha lokupholisa kunye ne-crystallization stage, i-contraction ye-thermal iyenzeka, ekhokelela ekuphuhlisweni kweengcinezelo eziseleyo kwi-weld joint. Uxinzelelo olushiyekileyo lunokuchaphazela indlela yokuziphatha komatshini wecandelo elidityanisiweyo, elichaphazela izinto ezinje ngozinzo lwe-dimensional, ukumelana nokudinwa, kunye nokuchaphazeleka kokuqhekeka. Uqwalaselo olululo lwamazinga okupholisa kunye nolawulo lwegalelo lobushushu lunokunceda ukunciphisa ukubunjwa koxinzelelo olugqithisileyo lwentsalela.
Unyango loBushushu lwasemva kweWeld:
Kwezinye iimeko, unyango lwe-post-weld heat heat lungasetyenzwa emva kwesigaba sokupholisa kunye ne-crystallization ukuqhubela phambili ukulungiswa kwe-microstructure kunye nokunciphisa uxinzelelo olushiyekileyo. Unyango lobushushu olufana nokufunxa okanye ukufutha lunokunceda ukuphucula iipropathi zomatshini zejoyinti leweld, njengokuqina, ukuqina, kunye nokudumba. Inkqubo ethile yokushisa ukushisa kunye neeparitha zixhomekeke kwizinto ezifakwe kwi-welded kunye neempawu ezifunwayo.
Inqanaba lokupholisa kunye ne-crystallization kwi-medium frequency inverter spot welding sisigaba esibalulekileyo esichaphazela i-microstructure yokugqibela kunye neempawu zomatshini we-weld joint. Ngokulawula umyinge wokupholisa, abavelisi banokufikelela kwizakhiwo ezinqwenelekayo eziziinkozo, banciphise uxinzelelo olushiyekileyo, kwaye baphucule ukusebenza ngokubanzi kwamacandelo adityanisiweyo. Ukuqonda ubunzima benkqubo yokupholisa kunye ne-crystallization kuvumela ukulungiswa okungcono kweeparamitha ze-welding kunye nonyango lwe-post-weld, ekugqibeleni lukhokelela kwizinga eliphezulu kunye nezithembekileyo ze-weld joints.