Ithute kamoo liphekolo tsa mocheso li ka sebelisoang ho li-alloys tse ngata tsa tšepe ho ntlafatsa haholo thepa ea bohlokoa ea 'mele joalo ka ho thatafala, matla le machinability.
Selelekela
Phekolo ea mocheso e ka sebelisoa ho li-alloys tse ngata tsa tšepe ho ntlafatsa haholo thepa ea bohlokoa ea 'mele (mohlala ho thatafala, matla kapa machinability).Liphetoho tsena li etsahala ka lebaka la liphetoho ho microstructure le, ka linako tse ling, lik'hemik'hale tsa thepa.
Liphekolo tseo li kenyelletsa ho futhumatsa ha lisebelisoa tsa tšepe ho (hangata) mocheso o feteletseng, o lateloa ke mohato oa ho pholile tlas'a maemo a laoloang.Mocheso oo thepa e futhumatsoang ka oona, nako eo e bolokiloeng ka eona mocheso oo le sekhahla sa ho pholile kaofela se ama haholo thepa ea ho qetela ea 'mele ea alloy ea tšepe.
Sehloohong sena, re hlahlobile liphekolo tsa mocheso tse amanang le li-alloys tsa tšepe tse sebelisoang haholo ho machining ea CNC.Ka ho hlalosa phello ea lits'ebetso tsena ho thepa ea karolo ea ho qetela, sengoloa sena se tla u thusa ho khetha thepa e nepahetseng bakeng sa lits'ebetso tsa hau.
Liphekolo tsa mocheso li sebelisoa neng
Phekolo ea mocheso e ka sebelisoa ho li-alloys tsa tšepe nakong eohle ea tlhahiso.Bakeng sa likarolo tsa mochini oa CNC, kalafo ea mocheso hangata e sebelisoa e ka ba:
Pele ho machining a CNC: Ha ho kopuoa mofuta o emeng oa alloy ea tšepe o fumanehang habonolo, mofani oa litšebeletso oa CNC o tla kenya likarolo ka kotloloho ho tsoa ho thepa eo.Hangata sena ke khetho e ntle ka ho fetisisa ea ho fokotsa nako ea ho etella pele.
Ka mor'a CNC machining: Liphekolo tse ling tsa mocheso li eketsa thata ho thatafala ha thepa kapa li sebelisoa e le mohato oa ho qetela ka mor'a ho theha.Maemong ana, phekolo ea mocheso e sebelisoa ka mor'a mochine oa CNC, kaha boima bo phahameng bo fokotsa ho sebetsa ha thepa.Ka mohlala, sena ke tloaelo e tloaelehileng ha CNC machining sesebelisoa likarolo tšepe.
Liphekolo tse tloaelehileng tsa mocheso bakeng sa lisebelisoa tsa CNC
Ho kokobetsa maikutlo, ho imolla khatello ea maikutlo le ho kokobetsa
Ho kopanya, ho kokobetsa le ho fokotsa khatello ea kelello kaofela ho kenyelletsa ho futhumala ha motsoako oa tšepe mocheso o phahameng le ho pholile ho latelang ha thepa ka lebelo le fokolang, hangata moeeng kapa ka ontong.Li fapane ka mocheso oo thepa e futhumetseng ho oona le ka tatellano ea mokhoa oa ho etsa tlhahiso.
Ka annealing, tšepe e futhumatsoa ho mocheso o phahameng haholo ebe e pholile butle-butle ho finyella microstructure e lakatsehang.Annealing e atisa ho sebelisoa ho li-alloys tsohle tsa tšepe ka mor'a ho etsoa le pele ho ts'ebetso leha e le efe e eketsehileng ho li nolofatsa le ho ntlafatsa machinability ea tsona.Haeba phekolo e 'ngoe ea mocheso e sa boleloa, likarolo tse ngata tsa CNC tse entsoeng ka mochine li tla ba le thepa ea thepa ea naha e kentsoeng.
Ho fokotsa khatello ea maikutlo ho kenyelletsa ho futhumala ha karolo ho mocheso o phahameng (empa o le tlase ho feta annealing) 'me hangata e sebelisoa ka mor'a mochine oa CNC, ho felisa likhatello tse setseng tse bakoang ke ts'ebetso ea tlhahiso.Ka tsela ena ho hlahisoa likarolo tse nang le thepa e tsitsitseng haholoanyane.
Ho futhumala ho boetse ho futhumatsa karolo ka mocheso o tlase ho feta oa annealing, 'me hangata e ne e sebelisoa ka mor'a ho tima (sheba karolo e latelang) ea litšepe tse bonolo (1045 le A36) le lisebelisoa tsa alloy (4140 le 4240) ho fokotsa brittleness ea bona le ho ntlafatsa ts'ebetso ea bona ea mochine.
Ho tima
Ho tima ho kenyelletsa ho futhumala ha tšepe mocheso o phahameng haholo, ho lateloa ke mohato oa ho pholile ka potlako, hangata ka ho kenya thepa ka har'a oli kapa metsing kapa ho pepesehela moea o pholileng.Ho pholisa ka potlako ho "locks-in" ho fetoha ha microstructure eo thepa e kenang ho eona ha e futhumala, e bakang likarolo tse nang le boima bo phahameng haholo.
Likarolo hangata li tingoa e le mohato oa ho qetela ts'ebetsong ea tlhahiso ka mor'a ho sebetsa ka CNC (nahana ka litei tsa tšepe tse kenyang likhahla tsa tsona ka oli), kaha boima bo ntseng bo eketseha bo etsa hore thepa e be thata ho feta mochine.
Lisebelisoa tsa lisebelisoa li tima ka mor'a ho sebetsa ka mochine oa CNC ho finyella thepa ea bona e phahameng haholo ea ho thatafala holimo.Joale ho ka sebelisoa mokhoa oa ho bebofatsa ho laola ho thatafala ho bakoang ke hona.Ka mohlala, Tool steel A2 e na le boima ba 63-65 Rockwell C ka mor'a ho tima, empa e ka halefa ho fihlela boima bo pakeng tsa 42 le 62 HRC.Ho futhumatsa ho lelefatsa bophelo ba tšebeletso ea karolo, kaha ho fokotsa brittleness (liphello tse molemo ka ho fetisisa li finyelloa bakeng sa boima ba 56-58 HRC).
Ho thatafala ha pula (ho tsofala)
Ho thatafala ha pula kapa botsofali ke mantsoe a mabeli a atisang ho sebelisoa ho hlalosa mokhoa o tšoanang.Ho thatafala ha pula ke mehato e meraro: thepa e qala ho futhumala mocheso o phahameng, ebe oa tima ebe o qetella o futhumetse mocheso o tlaase ka nako e telele (ea tsofetseng).Sena se etsa hore likarolo tsa alloy tseo qalong li hlahang e le likaroloana tse sa tšoaneng tsa motsoako o fapaneng ho qhibiliha le ho ajoa ka mokhoa o ts'oanang ka har'a matrix a tšepe, ka tsela e tšoanang le eo kristale ea tsoekere e qhibilihang ka metsing ha tharollo e futhumatsoa.
Ka mor'a hore pula e be thata, matla le ho thatafala ha li-alloys tsa tšepe li eketseha haholo.Ka mohlala, 7075 ke motsoako oa aluminium, o atisang ho sebelisoa indastering ea lifofane, ho etsa likarolo tsa matla a thata a bapisoang le tšepe e sa hloekang, ha boima ba 'mele bo le ka tlase ho makhetlo a 3.
Ho thatafatsa nyeoe le carburizing
Ho thatafala ha linyeoe ke lelapa la phekolo ea mocheso e hlahisang likarolo tse nang le boima bo phahameng holim'a tsona, ha thepa e tlaase e ntse e le bonolo.Hangata sena se khethoa ho feta ho eketsa boima ba karolo ho pholletsa le molumo oa eona (mohlala, ka ho tima), kaha likarolo tse thata le tsona li brittle haholoanyane.
Carburizing ke mokhoa o tloaelehileng haholo oa phekolo ea mocheso o thata.E kenyelletsa ho futhumatsa ha litšepe tse bonolo sebakeng se nang le carbon e ngata le ho tima karolo e latelang ho notlela carbon ka har'a matrix a tšepe.Sena se eketsa boima ba holim'a litšepe ka tsela e ts'oanang eo anodizing e eketsang boima ba holim'a li-alloys tsa aluminium.
Nako ea poso: Feb-14-2022