Karolo ea Phekolo ea Mocheso ho Saw Tip Welding

    Welding tungsten carbide (WC) e bone malebela a lisebelisoa tsa ho seha ke ts'ebetso ea bohlokoa e susumetsang haholo ts'ebetso le bophelo bo bolelele ba lisebelisoa. Leha ho le joalo, ts'ebetso ea welding e ka hlahisa likhatello tse setseng le ho fetola microstructure ea thepa e amehang. Mona ke moo phekolo ea mocheso e bapalang karolo ea bohlokoa. Ka ho sebelisa ka hloko mekhoa ea phekolo ea mocheso ka mor'a ho tjheseletsa, bahlahisi ba ka ntlafatsa thepa ea mechine ea manonyeletso a marang-rang, ho netefatsa hore ho na le ts'ebetso e nepahetseng tlas'a maemo a ts'ebetso. Sengoliloeng sena se hlahloba bohlokoa ba kalafo ea mocheso ho tjheseletsa ea lisakha, lits'ebetso tse amehang, le melemo eo e fanang ka eona.

1. Ho Utloisisa Phekolo ea Mocheso

    Phekolo ea mocheso ke mokhoa o laoloang o kenyelletsang ho futhumatsa le ho pholisa ha thepa ho finyella thepa e lakatsehang ea mochine. Boemong ba ho cheselletsa, kalafo ea mocheso e thusa ho imolla khatello ea maikutlo e setseng, ho ntlafatsa ho thatafala le ho matlafatsa boima. Mokhoa o khethehileng oa phekolo ea mocheso o khethiloeng o itšetlehile ka thepa e amehang le litšobotsi tse lakatsehang tsa sehlahisoa sa ho qetela.

2. Bohlokoa ba Phekolo ea Mocheso ho Welding

2.1 Ho Imolla Khatello ea Maikutlo

    Welding e hlahisa li-gradients tsa bohlokoa tsa mocheso tse ka lebisang khatellong e setseng ka har'a lenonyeletso le cheselitsoeng le sebaka se anngoeng ke mocheso (HAZ). Likhatello tsena li ka fella ka ho soahlamana, ho phunyeha, kapa ho hlōleha pele ho nako ea karolo e cheselitsoeng nakong ea tšebeletso. Phekolo ea mocheso e bohlokoa bakeng sa ho imolla likhatello tsena, ho khothalletsa botsitso ba mahlakore, le ho netefatsa botšepehi ba lenonyeletso le cheselitsoeng.

2.2 Ntlafatso ea Microstructure

    Ts'ebetso ea welding e ka fetola sebopeho sa microstructure ea malebela a tungsten carbide le substrate ea tšepe. Mocheso o feteletseng o ka lebisa ho coarsening ea carbide, e leng phello e mpe ho thatafala le ho apara ho hanyetsa ha malebela. Kalafo ea mocheso e lumella ho ntlafatsoa ha microstructure, ho khothalletsa ho ajoa ka mokhoa o ts'oanang oa li-carbide le ho ntlafatsa ts'ebetso ea kakaretso ea malebela a sakha.

2.3 Ntlafatso ea Thepa ea Mechini

    Ka phekolo ea mocheso, bahlahisi ba ka fetola thepa ea mochine oa motsoako o cheselitsoeng ho finyella litlhoko tse khethehileng tsa kopo. Mekhoa e joalo ka ho kokobetsa le ho kokobetsa ho ka ntlafatsa ho thatafala ha ho ntse ho boloka boima. Tekanyo ena e bohlokoa bakeng sa ho netefatsa hore malebela a sakha a ka mamella khatello e phahameng ea maikutlo le maemo a hlabang a kopaneng nakong ea ts'ebetso ea ho itšeha.

3. Mekhoa e Tloaelehileng ea Phekolo ea Mocheso

3.1 Ho Fokotsa Khatello ea Maikutlo

    Ho fokotsa khatello ea maikutlo ke mokhoa oa ho phekola mocheso o kenyelletsang ho futhumatsa karolo e cheselitsoeng ho mocheso o itseng, hangata ka tlas'a mocheso o boima oa thepa ea motheo, ebe o lumella hore o phole butle. Ts'ebetso ena e thusa ho fokotsa khatello ea maikutlo ntle le ho fetola haholo sebopeho sa tungsten carbide kapa substrate ea tšepe.

3.2 Ho halefa

    Tempering hangata e etsoa ka mor'a quenching ho fokotsa brittleness. Sebakeng sa malebela a tungsten carbide, ho halefisa ho ka thusa ho fihlela tekano lipakeng tsa boima le boima. Karolo e futhumatsoa ho mocheso o reriloeng esale pele ebe oa pholisoa, e leng se lumellang ho aroloa ha carbon le ho fokotsa khatello ea ka hare.

3.3 Ho tlatsa

    Annealing ke mokhoa o pharaletseng oa phekolo ea mocheso o ka sebelisoang ho li-substrates tsa tšepe. E kenyelletsa ho futhumatsa thepa ho mocheso o phahameng ebe o e pholisa butle-butle ho khothalletsa recrystallization. Ts'ebetso ena e ntlafatsa ductility le ho fokotsa ho thatafala, ho etsa hore ho be bonolo ho etsa mochine kapa ho tsoela pele ho sebetsa lenonyeletso le cheselitsoeng.

4. Litlhokomelo bakeng sa Phekolo e Atlehang ea Mocheso

4.1 Taolo ea Mocheso

    Taolo e nepahetseng ea mocheso e bohlokoa nakong ea kalafo ea mocheso. Ho futhumala ho feteletseng ho ka lebisa liphetohong tse sa rateheng ho microstructure, ha mocheso o sa lekaneng o ka 'na oa se ke oa imolla khatello ea kelello ka ho lekaneng. Ho sebelisa mekhoa e tsoetseng pele ea ho hlahloba mocheso ho ka thusa ho netefatsa hore ts'ebetso ea phekolo ea mocheso e etsoa ka har'a mekhahlelo e boletsoeng.

4.2 Sekhahla sa ho Pholisa

    Sekhahla sa ho pholisa ka mor'a phekolo ea mocheso le sona se phetha karolo ea bohlokoa ho khethollang thepa ea ho qetela ea motsoako o cheselitsoeng. Pholiso e potlakileng e ka baka khatello ea maikutlo e eketsehileng, athe ho pholisa butle ho khothalletsa ho tšoana ho microstructure. Baetsi ba tlameha ho khetha ka hloko mokhoa oa ho pholisa ho latela lisebelisoa le liphetho tse lakatsehang.

4.3 Tiisetso ea Boleng

    Ho kenya ts'ebetsong mehato e tiileng ea ho netefatsa boleng ho bohlokoa ho netefatsa katleho ea ts'ebetso ea phekolo ea mocheso. Mekhoa ea tlhahlobo e sa senyeheng (NDT), joalo ka tlhahlobo ea boima le tlhahlobo ea microstructural, e ka thusa ho lekola boleng ba weld le katleho ea kalafo ea mocheso.

Qetello

    Kalafo ea mocheso ke mohato oa bohlokoa oa ho cheselletsa malebela a li-tungsten carbide saw, a thusang ho fokotsa khatello ea maikutlo, ho ntlafatsa sebopeho sa micro, le ho ntlafatsa thepa ea mochini. Ka ho sebelisa mekhoa e nepahetseng ea ho phekola mocheso, bahlahisi ba ka ntlafatsa haholo ts'ebetso le ho tšoarella ha lisebelisoa tsa bona tsa ho itšeha. Ha indasteri ea hardmetal e ntse e tsoela pele, ho kopanngoa ha mekhoa e rarahaneng ea phekolo ea mocheso ho tla lula ho le bohlokoa bakeng sa ho hlahisa lihlahisoa tsa boleng bo phahameng ba tungsten carbide tse finyellang litlhoko tse thata tsa lisebelisoa tsa morao-rao..