Spot welding ke mofuta oa mochine oa khatiso le mokhoa oa setso oaresistance welding. Ke karolo ea bohlokoa ea ho sebetsa ka tšepe 'me e sebelisoa liindastering tse ngata. Sengoliloeng sena se tla hlalosa ka botlalo melao-motheo le mekhoa ea ts'ebetso ea ho cheselletsa letheba ho u thusa ho utloisisa hantle hore na welding ea letheba ke efe.

 Spot Welding ke Eng?

Spot welding ke mokhoa oa ho kopanya tšepe moo khatello e sebelisoang ho lisebelisoa tsa tšepe ka li-electrode tse ka holimo le tse tlaase, 'me motlakase oa motlakase o li futhumatsa ka nako e behiloeng, e leng se etsang hore tšepe e chesehele libakeng tsa ho kopana. Hangata li-electrode li entsoe ka koporo ka lebaka la mocheso o phahameng oa mocheso le ho hanyetsa ho tlaase. Ha hona joale ho feta ka li-electrode le li-workpieces tsa tšepe, mocheso o tsepamisitsoe lintlheng tsa ho kopana, o li qhibilihisa ka polasetiki. Joale hona joale ho emisoa, empa khatello e bolokoa, e kopanya lintlha tsa ho kopana. Spot welds e batla e le nyane, ka bophara ba sebaka se seng le se seng sa weld ho tloha ho 3 ho isa ho 20 mm.

Spot Welding e sebetsa Joang?

Re arola ts'ebetso ea ho cheselletsa sebaka ka mehato e mene: ho beha liparamente, ho beha lisebelisoa, ho sebelisa khatello le hona joale.

Ho beha Parameters

Mohato oa bohlokoa oa ho tjheseletsa sebakeng ke ho beha methati ya welding. Mocheso o hlahisoang nakong ea tjheseletso ea letheba o khethoa haholo-holo ka mekhahlelo e meraro: ea hona joale, ea ho hanyetsa le nako. Kamano pakeng tsa liparamente tsena e bontšoa ke equation e latelang:

Q = I²Rt

Q = mocheso o hlahisoang

I = welding current

R = ho hanyetsa ka electrode

T = nako ea phallo ea hona joale

Mekhahlelo ena e susumetsa e mong le e mong mme e lekanya boleng ba welding. Ea hona joale e na le tšusumetso e kholo ka ho fetisisa; boleng ba eona ba squared ho equation e ama haholo mocheso o hlahisoang. Ka hona, ho laola nako ea hona joale ke habohlokoa. Haeba hona joale welding e phahame haholo, e ka baka deformation le bubble ho weld. Haeba motlakase o le tlase haholo, li-workpieces li ke ke tsa qhibiliha hantle.

Ho hanyetsa ka electrode ho thata ho fetola nakong ea ho tjheseletsa, kaha ho itšetlehile haholo ka sebōpeho le boholo ba electrode. Nako ea ho phalla hona joale ke ea bohlokoa 'me e lokela ho behoa tumellanong le mekhahlelo e meng ho finyella liphello tse lakatsehang. Ho feta moo, khatello ea welding ke ntlha e 'ngoe ea bohlokoa. Ntle le khatello e lekaneng, ho thata ho fihlella welding e atlehileng ea letheba.

Aligned The Metal

Ka mor'a ho lokisa li-parameters, homokhoa oa ho cheselletsaqala. Ntlha ea pele, beha li-workpieces pakeng tsa li-electrode tse peli, ho hokahanya tšepe e le hore li-electrode li shebane le sebaka se lokelang ho chesoa. Mohato ona ke oa bohlokoa hobane haeba ntlha ea ho cheseletsa e sa tsamaellane hantle, weld e tla tima, mohlomong e etse hore sehlahisoa se be le sekoli. Ha likotoana tsa tšepe li e-na le sebōpeho se khethehileng kapa li hloka ho nepahala ho phahameng, ho ka ba thata ho lumellana le sebaka sa weld ka pono. Maemong a joalo, hoa hlokahala ho etsa jig e khethehileng. Ka tsela ena, o hloka feela ho beha likotoana tsa tšepe ka har'a jig ho etsa bonnete ba ho lumellana hantle bakeng sa welding.

Sebelisa Khatello

Mohato oa boraro oa ho tjheseletsa ke ho hatella disebediswa tsa tshepe. Li-electrode li lebisa ho li-workpieces tsa tšepe 'me li sebelisa khatello, ho etsa bonnete ba hore li-workpieces le li-electrode li kopane ka thata.

Ho Feta Hona Jwale

Hang ha li-electrode li hatelloa ka ho feletseng khahlanong le tšepe, u ka qala hona joale. Nakong ena, hona joale ho phalla ho tloha ho li-electrode ho ea ho lisebelisoa tsa tšepe, ho etsa hore tšepe e qhibilihe. Ha nako e behiloeng bakeng sa hona joale e fela, ea hona joale ea emisa ka bo eona. Nakong ena, li-electrode li tsoela pele ho sebelisa khatello, ho lumella tšepe e futhumetseng hore e kopane hammoho. Qetellong, li-electrode li lokolloa, li tlatsa weld.

Lisebelisoa tse Tloaelehileng tse Loketseng Spot Welding

Tšepe e tlaase ea carbone sebelisoa haholo likarolong tsa likoloi le litšepe tsa tšepe. Bakeng sa mofuta ona oa thepa, o ka beha nako e phahameng ea hona joale le nako e khuts'oane ea welding ho thusa ho theha matheba a tiileng a weld.

Aluminiume na le phepelo e ntle ea mocheso le conductivity, e nang le khanyetso e tlase haholo. Leha ho le joalo, bokaholimo ba eona bo hlahisa oxidize habonolo. Ha u tjheseletsa maqephe a aluminium, khetha lisebelisoa tsa ho tjheseletsa tse nang le matla a holimo 'me u sebelise motlakase o tlase ka litlhophiso tsa nako e telele ea ho tjheseletsa.

Ts'epe e sa beng le mabaliwelding, pulse welding hangata e sebelisoa ho fokotsa tšusumetso ea sebaka se anngoeng ke mocheso ponahalong, ho netefatsa hore weld e fihlela litlhoko tsa botle.

Ha tjheseletsa maqephe a masenke, lesela la zinki holim'a metsi le na le sebaka se tlase sa ho qhibiliha, se fihlellehang habonolo, se bakang splatter ea bohlokoa le ho khomarela li-electrode, tse lebisang ho tjheseletsa e sa tsitsang. Re sebelisa mehato e 'meli tjheseletsa tshebetso hona joale: mohato oa pele o sebelisa e nyenyane hona joale ho phunyeletsa ka lera zinki, le mohato oa bobeli o lokisa hona joale ho methati e loketseng tjheseletsa ho fokotsa splatter le electrode sticking, ntlafatsa tjheseletsa botsitso.

Ho phaella ho tsena, lithapo le lipoleiti tsa koporo, litšepe tse matla haholo, tšepe le litšepe tse ling le tsona li ka chesetsoa ho sebelisoa mekhoa ea ho cheseletsa matheba. Lisebelisoa tse fapaneng li ka hloka li-parameter tse fapaneng tsa welding.

Lisebelisoa tsa Spot Welding

Spot welding e sebelisoa haholo mafapheng a fapaneng joalo ka liindasteri tsa likoloi, tsa elektroniki, tsa lapeng le liindasteri tsa tšepe. Indastering ea likoloi, ho cheselletsa sebaka ho sebelisoa bakeng sa kopano ea 'mele ea koloi, e nang le sebopeho se rarahaneng, hangata se sebelisa li-welders tse nkehang habonolo kapa lisebelisoa tse iketsetsang sebaka. Likarolo tse ngata tsa tšepe likoloing, joalo ka liphanele tsa mahlakoreng a litulo, li-shock absorber, le li-brake pads, le tsona li hloka tjheseletso. Spot welding ka kakaretso e loketse tlhahiso ea karolo e phahameng ea tšepe. Haeba o hloka ho tjheseletsa lishiti tsa tšepe tse 20,000 ka khoeli, ho cheselletsa sebaka ke khetho e nepahetseng.

Melemo ea Spot Welding

Spot welding e na le nalane e telele ea nts'etsopele mme e bohlokoa haholo makaleng a mangata a indasteri bakeng sa ho kopanya tšepe. Ha ho bapisoa le mekhoa e meng ea welding, spot welding e fana ka melemo e mengata:

1. Fast Welding Lebelo:Spot welding e potlakile haholo ho feta mekhoa e meng ea welding. Le hoja mekhoa e meng e ka nka metsotso e 'maloa ho qeta ho cheselletsa, spot welding e ka fela ka metsotsoana e seng mekae. Ka tsoelo-pele ea theknoloji ea welding, linako tsa welding li se li potlakile le ho feta.

2. Aesthetic Welds:Lihlahisoa tse cheselitsoeng ho sebelisoa li-welding tsa letheba li khahleha ka mokhoa o nepahetseng haholo. Ha li na le tšekamelo ea ho senyeha, ha li na weld splatter, 'me li na le seams tse nyenyane tse bonahalang. Boleng bona bo bohlokoa bakeng sa liindasteri tse kang tsa likoloi moo litekanyetso tse phahameng tsa botle li leng bohlokoa.

3. Tšebetso e Sireletsehileng:Spot welding e na le bothata bo tlase ba tekheniki ts'ebetsong ea eona ea ts'ebetso, e leng ho nolofalletsang basebetsi ba tloaelehileng ho koetlisoa le ho sebetsa ka polokeho.

4. Mokhoa oa ho iketsetsa lintho:Spot welding e loketse tlhahiso e ngata ea lihlahisoa tsa tšepe 'me e ka kopanngoa habonolo le mekhoa ea liroboto bakeng sa ho iketsetsa, ho fokotsa mosebetsi oa matsoho.

5. Ha ho na Sesebelisuoa se Hlokahalang:Ho fapana le mekhoa e meng e mengata ea ho tjheseletsa e hlokang lisebelisoa tsa ho tlatsa khafetsa, welding ea letheba e kopanya lisebelisoa tse peli tsa mosebetsi hammoho ntle le tlhoko ea lisebelisoa tse eketsehileng.

Melemo ena e etsa hore welding e be khetho e ratoang liindastering tse hlokang mekhoa ea ho kopanya tšepe e sebetsang hantle, e ntle, e sireletsehileng, e ikemetseng le e sebetsang hantle.

Mefokolo ea resistance spot welding

Le ha welding ea matheba e le matla, ts'ebeliso ea eona e na le moeli ka lebaka la litšitiso tse ikhethang tsa sebopeho:

1. Ho Nepaha ha Boemo: Spot welding e phetheloa ka ho tsoa ha 'ngoe. Ntle le litsamaiso tse nepahetseng tsa ho beha maemo, ho se tsamaisane hantle ho ka lebisa ho bofokoli ba sehlahisoa le ho senyeha.

2. Botenya le Litšitiso tsa Sebopeho: Spot welding ka kakaretso e loketse ho tjheseletsa maqephe a masesaane (0-6mm). Lisebelisoa tse teteaneng kapa tse bōpehileng ka tsela e ikhethang li thata ho tjheseletsa ka ho sebelisa tjheseletso, e leng se etsang hore ho sebelisoe mahlale a mang bakeng sa lipoleiti tse teteaneng kapa liphaephe.

3. Matla a Kopanetsoeng: Manonyeletso a cheselitsoeng sebakeng se cheselletsang matheba a ka 'na a se be matla joalo hobane ke ts'ebetso ea ho tjheseletsa sebakeng se le seng, e shebaneng le ho cheselletsa sebaka se le seng ka nako.

4. Mathata a Taolo ea Boleng: Spot welding e kenyelletsa mekhahlelo e mengata, e 'ngoe le e' ngoe e ama boleng ba tjheseletsa. Phetoho e sa nepahalang ea li-parameter, joalo ka khatello, e ka fella ka liphello tse sa phethahalang tsa welding.

Meeli ena e hloka hore ho nahanoe ka hloko mofuta oa thepa, botenya le litlhoko tsa ho cheselletsa ha ho khethoa litšepe kapa mekhoa e meng bakeng sa litlhoko tse fapaneng tsa tlhahiso.

Mochini oa Welding oa Spot

Ho phethela mesebetsi ea ho cheselletsa letheba, o hloka amochini tjheseletsa letheba. Mechini ea welding ea Spot hangata e tla ka mefuta e mengata:Li-welders tsa sebaka sa stationary, li-welders tsa benchtop,portable gun spot welder, lemulti spot welder. Khetho ea mochini oa tjheseletsa oa letheba o itšetlehile haholo ka sebopeho le boholo ba lisebelisoa tsa hau tsa tšepe. Bakeng sa maqephe a 2 mm a botenya, welder e otlolohileng e lekane. Leha ho le joalo, bakeng sa 'mele oa likoloi oa ho cheselletsa moo ho leng thata ho tsamaisa lisebelisoa, ho sebelisoa lithaole tse nkehang tsa welding. Haeba o hloka ho tjheseletsa matheba a 'maloa lisebelisoa tsa tšepe hang-hang, welder e nang le matheba a mangata e loketse.

Kakaretso

Mona ke tlhaloso mabapi le ho cheselletsa letheba.Ho chesoa ka tšepeke mohato oa bohlokoa ts'ebetsong ea tšepe, 'me mekhoa ea ho tjheseletsa sebakeng e sebelisoa haholo liindastering tse fapaneng. Haeba u batla ho ithuta ho eketsehileng ka tjheseletsa sebakeng, u ka etela sebaka sa rōna sa marang-rang kapa ka ho toba buisana le basebetsi ba rona botekgeniki.