Resistance spot welding ke mokhoa o sebelisoang haholo indastering ea tlhahiso, haholo-holo makaleng a likoloi le a sefofane.Nakong ea ts'ebetso ea ho tjheseletsa, hona joale ho fetisoa ka lipampiri tse peli kapa ho feta tsa tšepe, tse hlahisang mocheso ho sebopeho.Mocheso ona o etsa hore tšepe e qhibilihe ebe e kopanya, e etsa lenonyeletso le matla.Leha ho le joalo, ho futhumala ho matla ha libaka ho boetse ho etsa hore ho be le ho atolosoa ha mocheso le ho senyeha ho latelang likarolong tse cheselitsoeng.
Ho bohlokoa ho utloisisa le ho lekanya sekhahla sa katoloso ea mocheso sebakeng sa tjheseletsa sebakeng sa ho hanyetsa ke sa bohlokoa bakeng sa ho netefatsa boleng le bots'epehi ba manonyeletso a cheselitsoeng.Sehloohong sena, re hlahlobisisa ketsahalo ena le litlamorao tsa eona.
1. Lisosa tsa Phetoho ea Katoloso ea Thermal
Sesosa se ka sehloohong sa ho senyeha ha mocheso oa ho atolosa ho hanyetsa letheba la welding ke ho futhumala ka potlako le ho pholile ha lisebelisoa tse cheselitsoeng.Ha hona joale e sebelisoa, tšepe e sehokelong sa weld e chesa ka potlako.Ho futhumala hona ha libaka ho etsa hore tšepe e atolohe.Ha motlakase o tingoa 'me tšepe e pholile, e hohela.Leha ho le joalo, ka lebaka la tlhaho e potlakileng ea ts'ebetso, ho fokotseha ha ho tšoane, ho lebisang ho deformation.
2. Lintho Tse Susumetsang Phetoho
Lintlha tse 'maloa li susumetsa boholo ba ho holofala ha mocheso:
a.Thepa ea Lintho:Lisebelisoa tse fapaneng li na le li-coefficients tse fapaneng tsa katoloso ea mocheso.Ka hona, khetho ea thepa e ka ama haholo boholo ba deformation.
b.Welding Hona Joale le Nako:Maqhubu a phahameng a li-welding le linako tse telele tsa ho cheselletsa li ka lebisa ho deformation ea bohlokoa haholo kaha e baka liphetoho tse kholo tsa mocheso.
c.Botenya ba Lisebelisoa:Lisebelisoa tse teteaneng li na le molumo o moholo oa ho hola le ho hola, tse ka lebisang ho deformation ea bohlokoa haholoanyane.
d.Moralo oa Electrode:Moralo le lisebelisoa tsa li-electrode tsa welding li ka ama kabo ea mocheso, ka lebaka leo, deformation.
3. Mekhoa ea Tlhahlobo
Ho sekaseka le ho bolela esale pele deformation ea katoloso ea mocheso ho li-welding spot welding, mekhoa e fapaneng ea tlhahlobo e ka sebelisoa:
a.Finite Element Analysis (FEA):FEA e lumella ho etsa mohlala oa ts'ebetso eohle ea ho cheselletsa, ho nahanela lintlha tse kang thepa ea thepa, kabo ea mocheso, le nako.Sena se fana ka kutloisiso e qaqileng ea mekhoa ea deformation.
b.Teko ea Teko:Teko ea 'nete ea lefats'e e ka lekanya deformation ka kotloloho, ea fana ka lintlha tse netefalitsoeng bakeng sa netefatso le ntlafatso ea mefuta ea tlhahlobo.
c.Lipapiso tsa Khomphutha:Lipapiso tsa computational, tse kenyelletsang thepa le liparamente tsa ts'ebetso, li ka bolela esale pele liphetho tsa deformation le ho thusa ho ntlafatsa maemo a welding.
4. Mekhoa ea ho Fokotsa
Ho fokotsa deformation ea katoloso ea mocheso ho bohlokoa bakeng sa ho hlahisa li-welds tsa boleng bo holimo.Mekhoa e meng ea ho fokotsa deformation e kenyelletsa:
a.Preheating:Ho futhumatsa lisebelisoa pele ho tjheseletsa ho ka fokotsa phapang ea mocheso le deformation e latelang.
b.Controlled Cooling:Ho kenya ts'ebetsong mekhoa ea ho pholisa e laoloang, joalo ka kalafo ea mocheso ka mor'a tjheseletsa, ho ka thusa ho laola deformation.
c.Khetho ea Lintho:Ho khetha lisebelisoa tse nang le li-coefficients tse tšoanang tsa ho atolosoa ha mocheso ho ka fokotsa deformation.
d.Ntlafatso ea Ts'ebetso:Mekhahlelo ea ho tjheseletsa hantle joalo ka moralo oa hajoale, oa nako le li-electrode li ka fokotsa litšekamelo tsa deformation.
Qetellong, deformation ea katoloso ea mocheso ke phephetso e hlahang ho resistance spot welding.Leha ho le joalo, ka kutloisiso e felletseng ea lisosa le litlamorao tsa eona, hammoho le ts'ebeliso ea mekhoa ea tlhahlobo le maano a phokotso, bahlahisi ba ka hlahisa li-welds tsa boleng bo holimo le bots'epehi ba sebopeho.
Nako ea poso: Sep-25-2023