Nts'etsopele And Technical Trend Of Ceramic Insert Materials

Nts'etsopele le mokhoa oa tekheniki oa lisebelisoa tsa lehare la ceramic

Ka machining, sesebelisoa se 'nile sa bitsoa "meno a entsoeng ka indasteri",' me ts'ebetso ea ho itšeha ea lisebelisoa tsa lisebelisoa ke e 'ngoe ea lintlha tsa bohlokoa tse khethollang katleho ea tlhahiso ea eona, litšenyehelo tsa tlhahiso le boleng ba ho sebetsa. Ka hona, khetho e nepahetseng ea lisebelisoa tsa ho itšeha ke Habohlokoa, lithipa tsa ceramic, tse nang le mocheso o motle oa ho hanyetsa, ho roala ho hanyetsa le botsitso ba lik'hemik'hale, li bontša melemo eo lisebelisoa tsa setso li ke keng tsa lumellana le tsona tšimong ea ho itšeha ka lebelo le phahameng le ho itšeha ho thata-ho. -lisebelisoa tsa mochini, le lisebelisoa tse ka sehloohong tsa lithipa tsa ceramic ke Al le Si. Lintho tse ruileng tse karolong e ka holimo ea lefatše ho ka boleloa hore ha li fele ebile ha li fele. Ka hona, tebello ea ts'ebeliso ea lisebelisoa tse ncha tsa ceramic e pharaletseng haholo.

Taba ea pele, mofuta oa lisebelisoa tsa ceramic

Tsoelo-pele ea lisebelisoa tsa lisebelisoa tsa ceramic e tsepamisitse maikutlo ho ntlafatsa ts'ebetso ea lisebelisoa tsa khale tsa lisebelisoa tsa ceramic, ho hloekisa lijo-thollo, motsoako oa motsoako, ho roala, ho ntlafatsa ts'ebetso ea sintering le ho hlahisa lihlahisoa tse ncha, e le ho fumana ho hanyetsa mocheso o phahameng, ho hanyetsa le ho hanyetsa. Ts'ebetso e ntle haholo ea ho phunya 'me e ka fihlela litlhoko tsa machining a lebelo le holimo. Henan Institute of Superhard Materials e ka arola lisebelisoa tsa lisebelisoa tsa ceramic ka mekhahlelo e meraro: alumina, silicon nitride le boron nitride (lisebelisoa tsa cubic boron nitride). Lefapheng la ho itšeha ka tšepe, li-blades tsa alumina ceramic le silicon nitride ceramic blades ka kakaretso li bitsoa blades ceramic; ka lisebelisoa tse se nang tšepe, lisebelisoa tsa cubic boron nitride ke tsa sehlopha se seholo sa lisebelisoa tsa ceramic. Lintlha tse latelang ke litšobotsi tsa mefuta e meraro ea li-ceramics.

(1) Alumina (Al2O3) e thehiloeng ceramic: Ni, Co, W, kapa tse ling tse joalo li eketsoa e le tšepe e tlamang ho ceramic e thehiloeng ho carbide, 'me matla a ho kopanya pakeng tsa alumina le carbide a ka ntlafatsoa. E na le khanyetso e ntle ea ho apara le ho hanyetsa mocheso, 'me mocheso oa eona o phahameng oa lik'hemik'hale ha o bonolo ho interdif kapa karabelo ea lik'hemik'hale ka tšepe. Ka hona, li-cutters tsa ceramic tse thehiloeng ho alumina li na le mefuta e mengata ka ho fetisisa ea kopo, e loketseng tšepe le tšepe e entsoeng ka tšepe. Ho sebetsa ka lebelo le phahameng la li-alloys tsa eona; ka lebaka la ho ntlafala ha mocheso oa mocheso, e ka boela ea sebelisoa bakeng sa ho sila kapa ho rala tlas'a maemo a khaotsoeng a ho itšeha, empa ha e loketse ho sebetsana le lisebelisoa tsa aluminium, li-alloys tsa titanium le li-alloys tsa niobium, ho seng joalo li atisa ho apara lik'hemik'hale.

(2) Silicon nitride (Si3N4)-based ceramic cutter: Ke ceramic e entsoeng ka ho eketsa palo e loketseng ea tšepe ea carbide le tšepe e matlafatsang ho silicon nitride matrix, le ho sebelisa motsoako o matlafatsang (o boetse o bitsoa ho qhalakanngoa). matlafatso). E khetholloa ka boima bo phahameng, ho hanyetsa ho apara hantle, ho hanyetsa mocheso o motle le ho hanyetsa oxidation, 'me lik'hemik'hale tsa lik'hemik'hale pakeng tsa silicon nitride le carbon le lisebelisoa tsa tšepe li nyenyane,' me ntho ea ho ferekana le eona e tlaase. E loketse ho qeta, ho qeta halofo, ho qeta kapa ho qeta halofo.

(3) Boron nitride ceramic (cubic boron nitride cutter): boima bo phahameng, ho hanyetsa ho roala, ho hanyetsa mocheso o motle, botsitso bo botle ba mocheso, conductivity e ntle ea mocheso, coefficient e tlaase ea friction, le coefficient e nyenyane ea katoloso ea linear. Mohlala, sesebelisoa sa Hualing cubic boron nitride grade BN-S20 se sebelisoa bakeng sa tšepe e thata e thata, sehlopha sa BN-H10 se sebelisetsoa ho phethela tšepe e thata ka lebelo le phahameng, sehlopha sa BN-K1 se sebetsoa ka tšepe e thata e phahameng, ho itšeha ka lebelo le phahameng la BN-S30. molora Tšepe ea tšepe e na le chelete e ngata ho feta lisebelisoa tsa ceramic.

Ea bobeli, litšobotsi tsa lisebelisoa tsa ceramic

Litšobotsi tsa lisebelisoa tsa ceramic: (1) ho hanyetsa ho apara hantle; (2) ho hanyetsa mocheso o phahameng, boima bo botle bo bofubelu bo botle; (3) ho tšoarella ha sesebelisoa ho na le makhetlo a 'maloa kapa ho feta makhetlo a' maloa ho feta lisebelisoa tsa setso, ho fokotsa palo ea liphetoho tsa sesebelisoa nakong ea ts'ebetso, ho netefatsa hore ho na le "taper" e nyane.ho nepahala ho phahameng ha workpiece e lokelang ho etsoa; (4) e ke ke ea sebelisoa feela bakeng sa ho hlaba le ho qeta lisebelisoa tse thata haholo, empa hape le bakeng sa machining a nang le tšusumetso e kholo e kang ho sila, ho rera, ho khaola ho sitisoa le ho senya letho; (5) Ha lehare la ceramic le khaotsoe, ho ferekana ka tšepe ho nyenyane, ho khaola ha ho bonolo ho tlamahane le lehare, moeli o hahiloeng ha o bonolo ho etsahala, 'me ho khaola ka lebelo le phahameng ho ka etsoa.

Ha li bapisoa le li-carbide tse kentsoeng, lisebelisoa tsa ceramic li ka mamella mocheso o phahameng oa 2000 ° C, ha li-alloys tse thata li fetoha bonolo ho 800 ° C; kahoo lisebelisoa tsa ceramic li na le mocheso o phahameng oa botsitso ba lik'hemik'hale 'me li ka khaoloa ka lebelo le phahameng, empa bothata ke ho kenngoa ka ceramic. Matla le boima li tlase ebile li bonolo ho robeha. Hamorao, ho ile ha hlahisoa li-ceramics tsa boron nitride (tseo hona joale li bitsoang cubic boron nitride tools) tse sebelisoang haholo-holo bakeng sa ho reteleha, ho sila le lisebelisoa tse thata haholo. Boima ba li-cubic boron nitride cutters bo phahame haholo ho feta ba lisebelisoa tsa ceramic. Ka lebaka la boima ba eona bo phahameng, e boetse e bitsoa superhard material e nang le daemane. Hangata e sebelisoa ho sebetsana le lisebelisoa tse thata ho feta HRC48. E na le boima bo phahameng ba mocheso o phahameng - ho fihla ho 2000 ° C, le hoja e le brittle ho feta li-blades tsa carbide tse samente, empa e ntlafalitse haholo matla a ts'usumetso le ho hanyetsa ha ho bapisoa le lisebelisoa tsa alumina ceramic. Ho phaella moo, lisebelisoa tse ling tse khethehileng tsa li-cubic boron nitride (tse kang Huachao Super Hard BN-K1 le BN-S20) li ka mamella boima ba chip ea machining 'me li ka mamella tšusumetso ea nako le nako ea ho qeta. Mocheso oa ho roala le ho itšeha, litšoaneleho tsena li ka kopana le ts'ebetso e thata ea tšepe e thata le tšepe e thata e nang le lisebelisoa tsa cubic boron nitride.