Ka ho itšeha ka tšepe, sesebelisoa sa ho itšeha se 'nile sa bitsoa meno a tlhahiso ea indasteri,' me ts'ebetso ea ho itšeha ea lisebelisoa tsa ho itšeha ke e 'ngoe ea lintlha tse ka sehloohong tse khethollang katleho ea eona ea tlhahiso, litšenyehelo tsa tlhahiso le boleng ba ho sebetsa. Ka hona, khetho e nepahetseng ea lisebelisoa tsa ho seha ke ea bohlokoa haholo.
Lisebelisoa tsa lisebelisoa li bua ka thepa ea karolo ea ho itšeha ea sesebelisoa.
Haholo-holo, khetho e nepahetseng ea lisebelisoa tsa lisebelisoa e ama lintlha tse latelang:
Tlhahiso ea machining, ho tšoarella ha lisebelisoa, tšebeliso ea lisebelisoa le litšenyehelo tsa mochini, ho nepahala ha mochini le boleng ba bokaholimo.
Ka kakaretso ho lumeloa hore lisebelisoa tsa lisebelisoa li kenyelletsa tšepe ea carbon tool, alloy tool steel, high-speed steel, hard alloy, ceramics, cermets, diamond, cubic boron nitride, joalo-joalo.
Cermet ke thepa e kopantsoeng
Cermet
Cermet English lentsoe cermet kapa ceramet e entsoe ka ceramic (ceramic) le tšepe (tšepe). Cermet ke mofuta oa thepa e kopantsoeng, 'me tlhaloso ea eona e fapane hanyane ka linako tse fapaneng.
(1) Tse ling li hlalosoa e le thepa e entsoeng ka lirafshoa le litšepe, kapa lintho tse entsoeng ka motsoako oa lirafshoa le litšepe tse entsoeng ka phofo ea metallurgy.
American ASTM Professional Committee e e hlalosa e le: thepa e kopantsoeng e fapaneng e entsoeng ka tšepe kapa alloy le mohato o le mong kapa ho feta oa ceramic, eo ea ho qetela e etsang karolo ea 15% ho isa ho 85% ea molumo, le mocheso oa ho lokisetsa, The solubility pakeng tsa likarolo tsa tšepe le tsa ceramic li batla li le nyane.
Lisebelisoa tse entsoeng ka tšepe le lisebelisoa tse tala tsa ceramic li na le melemo e meng ea tšepe le li-ceramics, tse kang ho tiea le ho kobeha ha pele, le ho hanyetsa mocheso o phahameng, matla a phahameng le khanyetso ea oxidation ea morao-rao.
(2) Cermet ke carbide e entsoeng ka samente e nang le likaroloana tse thata tse thehiloeng ho titanium e le 'mele o ka sehloohong. Lebitso la Senyesemane la cermet, cermet, ke motsoako oa mantsoe a mabeli a ceramic (ceramic) le tšepe (tšepe). Ti(C,N) e eketsa khanyetso ea mophato, karolo ea bobeli e thata e eketsa khanyetso ho deformation ea polasetiki, 'me litaba tsa cobalt li laola ho tiea. Li-cermets li eketsa khanyetso ea ho roala le ho fokotsa tšekamelo ea ho khomarela "workpiece" ha e bapisoa le sintered carbide.
Ka lehlakoreng le leng, e boetse e na le matla a fokolang a ho hatella le ho hanyetsa mocheso o fokolang oa mocheso. Li-cermets li fapane le li-alloys tse thata ka hore likarolo tsa tsona tse thata ke tsa tsamaiso ea WC. Li-cermets li entsoe haholo ka li-carbides le nitrides tse thehiloeng ho Ti, hape li bitsoa Ti-based cemented carbides.
Li-cermets tse akaretsang li boetse li kenyelletsa li-alloys tsa metsoako ea refractory, li-alloys tse thata, le lisebelisoa tsa lisebelisoa tsa daemane tse kopantsoeng ka tšepe. Karolo ea ceramic ho cermets ke motsoako oa oxide kapa refractory o nang le ntlha e phahameng ea ho qhibiliha le boima bo phahameng, 'me karolo ea tšepe ke haholo-holo likarolo tsa phetoho le li-alloys tsa tsona.
Cermet ke mofuta oa thepa e kopantsoeng, 'me tlhaloso ea eona e fapane hanyane ka linako tse fapaneng.
Cermets ke lisebelisoa tsa ho itšeha ka tšepe
thepa ea bohlokoa
Li-cermet li ntse li ntlafatsoa
Ka kakaretso ho lumeloa hore lisebelisoa tsa lisebelisoa li kenyelletsa tšepe ea carbon tool, alloy tool steel, high-speed steel, carbide e entsoeng ka samente, cermet, ceramics, diamond, cubic boron nitride, joalo-joalo.
Lilemong tsa bo-1950, li-cermets tsa TiC-Mo-Ni li ile tsa sebelisoa ka lekhetlo la pele e le lisebelisoa tsa ho itšeha ka lebelo le phahameng la tšepe.
Qalong li-cermets li ne li entsoe ho tloha TiC le nickel. Le hoja e na le matla a phahameng le boima bo phahameng bo bapisoang le carbide e entsoeng ka samente, ho tiea ha eona ho batla ho fokola.
Lilemong tsa bo-1970, li-cermets tse thehiloeng ho TiC-TiN, li-cermets tse se nang nickel li ile tsa hlahisoa.
Cermet ena ea sejoale-joale, e nang le likaroloana tsa titanium carbonitride Ti (C, N) e le karolo ea mantlha, karolo e nyane ea karolo ea bobeli e thata (Ti, Nb, W) (C, N) le binder e ruileng ea tungsten-cobalt, e ntlafatsa tšepe. ho tiea ha lirafshoa ho ile ha ntlafatsa ts'ebetso ea bona ea ho itšeha, 'me ho tloha ka nako eo li-cermets li' nile tsa sebelisoa haholo ho nts'etsopele ea lisebelisoa.
Ka ho hanyetsa mocheso o babatsehang, ho hanyetsa ho apara le botsitso ba lik'hemik'hale, lisebelisoa tsa cermet li bontšitse melemo e ke keng ea lekanngoa tšimong ea ho itšeha ka lebelo le phahameng le ho seha thepa e thata ho ea mochine.
Cermet + PVD ea ho roala e ntlafatsa ho hanyetsa ho apara
bokamoso
Tšebeliso ea lithipa tsa cermet masimong a sa tšoaneng e ntse e eketseha letsatsi le letsatsi, 'me ha ho pelaelo hore indasteri ea thepa ea cermet e tla ntlafatsoa haholoanyane.
Li-cermets le tsona li ka koaheloa ka PVD bakeng sa khanyetso e ntlafetseng ea ho apara.
Nako ea poso: Feb-08-2023
