Analysis of Electrical Resistivity in Medium Frequency Inverter Spot Welding Machines

Resistivity ea motlakase ke paramente ea bohlokoa mochining oa welding oa frequency inverter spot welding, kaha e khetha bokhoni ba lisebelisoa ho hanela phallo ea motlakase.Sengoliloeng sena se ikemiselitse ho sekaseka mohopolo oa ho hanyetsa motlakase le bohlokoa ba ona molemong oa ts'ebetso ea welding ea matheba ho sebelisa metjhini e mahareng ea frequency inverter.

1. Ho utloisisa ho hanyetsa Motlakase: Resistivity ea motlakase, e bontšitsoeng ke letšoao ρ (rho), ke thepa ea thepa e lekanyang khanyetso ea eona ho phalla ha motlakase oa motlakase.E hlalosoa e le karo-karolelano ea sebaka sa motlakase se sebelisoang ho pholletsa le thepa ho ea ho sephetho sa motlakase oa motlakase.Resistivity hangata e lekantsoe ka li-unit tsa ohm-meters (Ω·m) kapa ohm-centimeters (Ω·cm).
2. Bohlokoa ba Resistivity ea Motlakase ho Spot Welding: Mechineng ea welding ea maqhubu a mahareng a maqhubu a motlakase, ho utloisisa matla a ho hanyetsa motlakase oa lisebelisoa tsa mosebetsi ho bohlokoa ka mabaka a 'maloa: a.Khetho ea Boitsebiso: Lisebelisoa tse fapaneng li na le mefuta e fapaneng ea ho hanyetsa motlakase, e ka amang ts'ebetso ea welding.Ho khetha lisebelisoa tse nang le li-resistivities tse lumellanang ho netefatsa phallo e nepahetseng ea hona joale le tlhahiso e nepahetseng ea mocheso nakong ea welding.b.Joule Heating: Spot welding e itšetlehile ka phetoho ea matla a motlakase hore e be mocheso ka ho futhumatsa ho thibelang matla.The resistivity ea thepa ea workpiece e etsa qeto ea palo ea mocheso o hlahisoang sebakeng sa welding, ka ho toba ho susumetsa boleng ba weld le matla.c.Kabo ea Mocheso: Ho fapana ha resistivity ho ka lebisa ho ajoa ha mocheso o sa ts'oaneng nakong ea ho cheselletsa libaka.Lisebelisoa tse nang le li-resistivities tse fapaneng li ka 'na tsa bontša ho futhumatsa ho sa tšoaneng, ho ama boholo le sebōpeho sa weld nugget le tse ka' nang tsa senya botšepehi bo kopanetsoeng.d.Kopana le Resistance: Motlakase o hanyetsanang le sebopeho sa electrode-workpiece o susumetsa khanyetso ea ho kopana.Ho hanyetsa ho phahameng ho ka etsa hore ho be le khanyetso e eketsehileng ea ho kopana, e amang phetisetso ea hona joale le tlhahiso ea mocheso.
3. Lintlha tse Amang Tšireletso ea Motlakase: Lintlha tse 'maloa li susumetsa matla a ho hanyetsa motlakase oa thepa e sebelisoang ho cheselletsa letheba: a.Sebopeho sa Material: Sebopeho sa mantlha le litaba tse sa hloekang tsa thepa li ama matla a eona a ho hanyetsa.Lisebelisoa tse nang le maemo a phahameng a litšila hangata li bonts'a matla a ho hanyetsa.b.Mocheso: Motlakase o hanyetsanang le mocheso o itšetlehile ka mocheso, ka lisebelisoa tse ngata tse bontšang keketseho ea ho hanyetsa ha mocheso o ntse o phahama.Ka hona, ho bohlokoa ho nahana ka mocheso oa ts'ebetso nakong ea welding ho lekola litlamorao tsa resistivity.c.Sebopeho sa lijo-thollo: Sebopeho sa lijo-thollo le tlhophiso ea kristale ea lisebelisoa li ka ama matla a tsona a ho hanyetsa motlakase.Lisebelisoa tse entsoeng ka mokhoa o motle ka tloaelo li bonts'a matla a tlase ho feta a mahoashe-grained.d.Alloying Elements: Ho eketsoa ha likarolo tsa alloying ho ka fetola matla a motlakase a lisebelisoa.Mefuta e fapaneng ea alloy e ka fella ka maemo a fapaneng a ho hanyetsa, a ama ts'ebetso ea welding.

Ho utloisisa mohopolo oa resistivity ea motlakase le bohlokoa ba ona mochining oa welding oa maqhubu a mahareng ho bohlokoa bakeng sa ho fihlela boleng le ts'ebetso e nepahetseng ea weld.Ka ho nahana ka resistivity ea motlakase ea lisebelisoa tsa workpiece, bahlahisi ba ka khetha lisebelisoa tse loketseng, ho laola kabo ea mocheso, ho fokotsa ho hanyetsa ho kopana, le ho etsa bonnete ba hore phallo e ntle ea hona joale nakong ea ts'ebetso ea welding.Tsebo ena e nolofatsa moralo le ts'ebetso ea lits'ebetso tsa welding ea letheba, e qetellang e lebisa ho li-welds tse tšepahalang le tsa boleng bo holimo lits'ebetsong tse fapaneng tsa indasteri.