Kameho ea Polarity ho Resistance Spot Welding

Resistance spot welding ke ts'ebetso e sebelisoang haholo tlhahisong, haholo indastering ea likoloi, moo e bapalang karolo ea bohlokoa ho kopanya likarolo tsa tšepe. E 'ngoe ea lintlha tse ka amang haholo boleng ba li-welds ke polarity ea ts'ebetso ea welding. Sengoliloeng sena, re tla hlahloba hore na polarity e ama ts'ebeliso ea sebaka sa ho hanyetsa le litlamorao tsa eona bakeng sa boleng ba weld.

 Utloisisa

Resistance spot welding, eo hangata e bitsoang spot welding, e kenyelletsa ho kopanngoa ha lishiti tse peli kapa ho feta ka ho sebelisa mocheso le khatello libakeng tse itseng. Mokhoa ona o itšetlehile ka ho hanyetsa motlakase ho hlahisa mocheso o hlokahalang bakeng sa ho cheselletsa. Polarity, moelelong oa ho hanyetsa welding, e bolela tlhophiso ea phallo ea motlakase oa hona joale oa welding.

Polarity ho Resistance Spot Welding

Resistance spot welding hangata e sebelisa e 'ngoe ea li-polarities tse peli: Direct current (DC) electrode negative (DCEN) kapa direct current electrode positive (DCEP).

1. DCEN (Direct Current Electrode Negative):Ka welding ea DCEN, electrode (hangata e entsoe ka koporo) e hokahane le terminal e mpe ea mohloli oa matla, athe workpiece e hokahane le terminal e ntle. Tokisetso ena e tsamaisa mocheso o mongata ho workpiece.
2. DCEP (Direct Current Electrode Positive):Ka tjheseletsa ea DCEP, polarity e khutlisetsoa morao, 'me eleketrode e hokahane le terminal e ntle le sesebelisoa ho terminal e fosahetseng. Phetoho ena e etsa hore mocheso o eketsehileng o kenelle ka har'a electrode.

Tšusumetso ea Polarity

Khetho ea polarity e ka ba le phello e kholo ts'ebetsong ea welding ea sebaka sa ho hanyetsa:

1. Kabo ea Mocheso:Joalokaha ho boletsoe pejana, DCEN e tsepamisa mocheso o mongata sebakeng sa mosebetsi, e leng se etsang hore e tšoanelehe bakeng sa lisebelisoa tsa welding tse nang le mocheso o phahameng oa mocheso. DCEP, ka lehlakoreng le leng, e tsamaisa mocheso o mongata ka har'a eleketrode, e ka bang molemo ha thepa ea ho tjheseletsa e nang le conductivity e tlase ea mocheso.
2. Electrode Wear:DCEP e atisa ho baka li-electrode tse ngata ha li bapisoa le DCEN ka lebaka la mocheso o phahameng o kentsoeng ka har'a electrode. Sena se ka lebisa ho nkeng li-electrode khafetsa le ho eketseha ha litšenyehelo tsa ts'ebetso.
3. Boleng ba Weld:Khetho ea polarity e ka ama boleng ba weld. Mohlala, DCEN hangata e ratoa bakeng sa ho tjheseletsa lisebelisoa tse tšesaane hobane e hlahisa lesela le boreleli, le sa hasoang haholo. Ka lehlakoreng le leng, DCEP e kanna ea ratoa bakeng sa lisebelisoa tse teteaneng moo mocheso o mongata o hlokahalang bakeng sa ho kopanya hantle.

Qetellong, polarity e khethiloeng bakeng sa weld spot welding e phetha karolo ea bohlokoa ho khetholla boleng le litšobotsi tsa weld. Qeto lipakeng tsa DCEN le DCEP e lokela ho ipapisa le lintlha tse kang mofuta oa thepa, botenya, le thepa e lakatsehang ea weld. Baetsi ba tlameha ho nahana ka lintlha tsena ka hloko ho ntlafatsa lits'ebetso tsa bona tsa ho tjheseletsa le ho hlahisa li-welds tsa boleng bo holimo, tse tšepahalang lits'ebetsong tse fapaneng.