Ithuluzi le-PCD lenziwe ngethiphu yommese wedayimane ye-polycrystalline kanye ne-carbide matrix ngokusebenzisa izinga lokushisa eliphezulu kanye nokucindezela okuphezulu kwe-sintering. Ayikwazi ukunikeza kuphela ukudlala okugcwele ezinzuzweni zobulukhuni obuphezulu, ukushisa okuphezulu kwe-thermal, i-coefficient ephansi ye-friction, i-coefficient ephansi yokwandisa ukushisa okushisayo, ukuhlobana okuncane nensimbi kanye ne-non-metal, i-modulus ephezulu yokunwebeka, akukho ndawo yokuqhekeka, i-isotropic, kodwa futhi icabangele amandla aphezulu e-alloy eqinile.
Ukuzinza kwe-thermal, ukuqina komthelela kanye nokumelana nokugqoka yizinkomba zokusebenza eziyinhloko ze-PCD. Ngenxa yokuthi isetshenziswa kakhulu ekushiseni okuphezulu kanye nemvelo yokucindezeleka okukhulu, ukuzinza kokushisa kuyinto ebaluleke kakhulu. Ucwaningo lubonisa ukuthi ukuzinza okushisayo kwe-PCD kunomthelela omkhulu ekuphikisweni kwayo kokugqoka kanye nokuqina komthelela. Idatha ibonisa ukuthi uma izinga lokushisa lingaphezulu kuka-750 ℃, ukumelana nokugqokwa kanye nokuqina komthelela we-PCD ngokuvamile kwehla ngo-5% -10%.
Isimo sekristalu se-PCD sinquma izakhiwo zayo. Ku-microstructure, ama-athomu ekhabhoni akha amabhondi ahlangene anama-athomu amane ancikene, athola isakhiwo se-tetrahedral, bese enza ikristalu ye-athomu, enamandla okuma ngakunye namandla okubopha, nobulukhuni obuphezulu. Izinkomba zokusebenza eziyinhloko ze-PCD zimi kanje: ① ubulukhuni bungafinyelela ku-8000 HV, izikhathi ezingu-8-12 ze-carbide; ② conductivity ezishisayo 700W / mK, 1.5-9 izikhathi, ngisho ephakeme kune-PCBN nethusi; ③ i-friction coefficient ngokuvamile ingu-0.1-0.3 kuphela, ingaphansi kakhulu kuka-0.4-1 we-carbide, inciphisa kakhulu amandla okusika; ④ i-thermal expansion coefficient ingu-0.9x10-6-1.18x10-6,1 / 5 kuphela ye-carbide, enganciphisa ukuwohloka kokushisa futhi ithuthukise ukunemba kokucubungula; ⑤ nezinto ezingezona ezensimbi zihlobene kancane ukuze zakhe izigaxana.
I-Cubic boron nitride inokumelana ne-oxidation okuqinile futhi ingacubungula izinto ezine-iron, kodwa ubulukhuni buphansi kunedayimane elilodwa lekristalu, ijubane lokucubungula lihamba kancane futhi ukusebenza kahle kuphansi. Idayimane elilodwa lekristalu linokuqina okuphezulu, kodwa ukuqina akwanele. I-Anisotropy yenza kube lula ukuhlukanisa phakathi (111) ngaphansi komthelela wamandla angaphandle, futhi ukusebenza kahle kokucubungula kunqunyelwe. I-PCD iyi-polymer ehlanganiswe yizinhlayiya zedayimane ezinosayizi omncane ngezindlela ezithile. Imvelo yesiphithiphithi yokunqwabelana okungahlelekile kwezinhlayiya iholela kumvelo yayo ye-isotropic enkulu kakhulu, futhi akukho ndawo eqondisayo neqhekekile emandleni aqinile. Uma kuqhathaniswa nedayimane le-single-crystal, umngcele wokusanhlamvu we-PCD unciphisa ngempumelelo i-anisotropy futhi uthuthukise izici zokushintshwa.
1. Izimiso zokuklama zamathuluzi okusika e-PCD
(1) Ukukhetha okunengqondo kosayizi wezinhlayiyana ze-PCD
Ngokweqile, i-PCD kufanele izame ukucwenga okusanhlamvu, futhi ukusatshalaliswa kwezithasiselo phakathi kwemikhiqizo kufanele kube okufanayo ngangokunokwenzeka ukuze kunqobe i-anisotropy. Ukukhethwa kosayizi wezinhlayiyana ze-PCD nakho kuhlobene nezimo zokucubungula. Ngokuvamile, i-PCD enamandla amakhulu, ukuqina okuhle, ukumelana nomthelela omuhle nokusanhlamvu okuhle kungasetshenziselwa ukuqeda noma ukuqeda kahle kakhulu, kanti i-PCD yokusanhlamvu okumahhadla ingasetshenziselwa ukukhanda amaholo. Usayizi wezinhlayiyana ze-PCD ungathinta kakhulu ukusebenza kwethuluzi. Izincwadi ezifanele zikhomba ukuthi lapho okusanhlamvu okuluhlaza kukhulu, ukumelana nokugqoka kukhula kancane kancane ngokuncipha kosayizi wokusanhlamvu, kodwa uma usayizi wokusanhlamvu mncane kakhulu, lo mthetho awusebenzi.
Ukuhlola okuhlobene kukhethe impushana yedayimane emine enosayizi abayizinhlayiyana eziyi-10um, 5um, 2um no-1um, futhi kwaphethwa ngokuthi: ① Ngokuncipha kosayizi wezinhlayiyana zezinto ezingavuthiwe, i-Co isakaza ngokulinganayo; ngokuncipha kwe-②, ukumelana nokugqokwa nokumelana nokushisa kwe-PCD kwehla kancane kancane.
(2) Ukukhetha okunengqondo kwefomu lomlomo we-blade nokuqina kwe-blade
Ifomu lomlomo we-blade ikakhulukazi lihlanganisa izakhiwo ezine: unqenqema oluhlanekezelwe, indilinga ecashile, unqenqema oluhlanekezelwe oluyinhlanganisela yendingilizi eyinhlanganisela kanye ne-engeli ebukhali. Isakhiwo esibukhali se-angular senza unqenqema lubukhali, isivinini sokusika siyashesha, singanciphisa kakhulu amandla okusika kanye ne-burr, sithuthukise ikhwalithi yomkhiqizo womkhiqizo, sifaneleka kakhulu ku-silicone aluminium alloy ephansi kanye nobunye ubulukhuni obuphansi, iyunifomu yokuqeda insimbi engeyona insimbi. Isakhiwo esiyindilinga esiyindilinga singadlulisa umlomo we-blade, senze i-R Angle, sivimbele ngempumelelo ukuphuka kwe-blade, ilungele ukucubungula ingxubevange ye-silicon aluminium ephakathi / ephezulu. Kwezinye izimo ezikhethekile, njengokujula kokusika okungajulile kanye nokudla kommese omncane, isakhiwo esiyindilinga esingenalutho siyakhethwa. Isakhiwo sonqenqema esihlanekezelwe singakhuphula imiphetho namakhona, siqinise i-blade, kodwa ngesikhathi esifanayo sizokwandisa ukucindezela nokumelana nokusika, kufaneleka kakhulu ukusika umthwalo osindayo we-silicon aluminium alloy.
Ukuze kube lula i-EDM, ngokuvamile khetha isendlalelo seshidi le-PDC elincanyana (0.3-1.0mm), kanye nongqimba lwe-carbide, ukushuba okuphelele kwethuluzi cishe ku-28mm. Ungqimba lwe-carbide akufanele lube lukhulu kakhulu ukugwema ukuhlukaniswa okubangelwa umehluko wengcindezi phakathi kwezindawo zokubopha
2, inqubo yokukhiqiza ithuluzi le-PCD
Inqubo yokukhiqiza ithuluzi le-PCD inquma ngokuqondile ukusebenza kokusika kanye nempilo yesevisi yethuluzi, okuyisihluthulelo sokusetshenziswa nokuthuthukiswa kwalo. Inqubo yokukhiqiza ithuluzi le-PCD ikhonjisiwe kuMfanekiso 5.
(1) Ukwenziwa kwamaphilisi ahlanganisiwe e-PCD (PDC)
① Inqubo yokukhiqiza ye-PDC
I-PDC ivamise ukwakhiwa ngempushana yedayimane yemvelo noma yokwenziwa kanye ne-ejenti ebophayo emazingeni okushisa aphezulu (1000-2000℃) kanye nokucindezela okuphezulu (5-10 atm). I-ejenti ebophayo yenza ibhuloho elibophayo eline-TiC, Sic, Fe, Co, Ni, njll. njengezingxenye eziyinhloko, futhi ikristalu yedayimane ishunyekwe ohlaka lwamathambo ebhuloho elibophayo ngendlela yesibopho esihlangene. I-PDC ngokuvamile yenziwa amadiski anobubanzi obungaguquki kanye nogqinsi, futhi agaywe futhi apholishwe nokunye okuhambisanayo zokwelapha ngokomzimba namakhemikhali. Empeleni, uhlobo olufanele lwe-PDC kufanele lugcine izici ezinhle kakhulu zomzimba zedayimane elilodwa lekristalu ngangokunokwenzeka, ngakho-ke, izithasiselo emzimbeni we-sintering kufanele zibe kancane ngangokunokwenzeka, ngesikhathi esifanayo, inhlanganisela ye-particle DD yebhondi ngangokunokwenzeka,
② Ukuhlukaniswa nokukhethwa kwezibophezelo
I-binder iyisici esibaluleke kakhulu esithinta ukuzinza kokushisa kwethuluzi le-PCD, elithinta ngokuqondile ubulukhuni bayo, ukumelana nokugqoka kanye nokuzinza kokushisa. Izindlela ezijwayelekile zokuhlanganisa i-PCD yilezi: insimbi, i-cobalt, i-nickel nezinye izinsimbi zoguquko. I-Co kanye ne-W powder exutshwe isetshenziswe njenge-ejenti yokubopha, futhi ukusebenza okuphelele kwe-PCD ye-sintering kwakungcono kakhulu lapho ingcindezi yokuhlanganisa ingu-5.5 GPa, izinga lokushisa le-sintering lalingu-1450 ℃ kanye nokufakwa kwe-4min. SiC, TiC, WC, TiB2, nezinye izinto zobumba. I-SiC Ukuzinza okushisayo kwe-SiC kungcono kune-Co, kodwa ubulukhuni nokuqina kokuphuka kuphansi kakhulu. Ukwehliswa okufanele kosayizi wempahla eluhlaza kungathuthukisa ubulukhuni nokuqina kwe-PCD. Akukho okunamathelayo, okune-graphite noma eminye imithombo yekhabhoni kumazinga okushisa aphezulu kakhulu nokucindezela okuphezulu okushiswe kudayimane le-nanoscale polymer (NPD). Ukusebenzisa i-graphite njengesandulela ukulungiselela i-NPD yizimo ezidinga kakhulu, kodwa i-NPD yokwenziwa inobulukhuni obuphezulu kanye nezakhiwo ezingcono kakhulu zemishini.
Ukukhethwa nokulawula ③ okusanhlamvu
Impushana yedayimane eluhlaza iyisici esibalulekile esithinta ukusebenza kwe-PCD. Ukwelapha i-micropowder yedayimane, ukwengeza inani elincane lezinto ezithiya ukukhula kwezinhlayiya zedayimane ezingavamile kanye nokukhethwa okunengqondo kwezithasiselo ze-sintering kungavimbela ukukhula kwezinhlayiya zedayimane ezingavamile.
I-NPD ehlanzekile ephezulu enesakhiwo esifanayo ingaqeda ngempumelelo i-anisotropy futhi ithuthukise izakhiwo zemishini. I-nanographite precursor powder elungiselelwe indlela yokugaya ibhola enamandla kakhulu yayisetshenziselwa ukulawula okuqukethwe kwe-oksijini ekushiseni okuphezulu ngaphambi kwe-sintering, ukuguqula i-graphite ibe idayimane ngaphansi kwe-18 GPa kanye ne-2100-2300 ℃, ikhiqiza i-lamella ne-NPD eyimbudumbudu, futhi ukuqina kwanda ngokuncipha kokuqina kwe-lamella.
④ Ukwelashwa kwamakhemikhali sekwephuzile
Ezingeni elifanayo lokushisa (200 ° ℃) nesikhathi (20h), umphumela wokukhipha i-cobalt we-Lewis acid-FeCl3 wawungcono kakhulu kunalowo wamanzi, futhi isilinganiso esifanele se-HCl sasingu-10-15g / 100ml. Ukuzinza okushisayo kwe-PCD kuyathuthuka njengoba ukujula kokususwa kwe-cobalt kukhula. Ngokukhula kwe-PCD eqinile, ukwelashwa kwe-asidi eqinile kungasusa ngokuphelele i-Co, kodwa kunethonya elikhulu ekusebenzeni kwe-polymer; ukwengeza i-TiC ne-WC ukushintsha ukwakheka kwe-polycrystal yokwenziwa futhi kuhlanganiswe nokwelashwa kwe-asidi eqinile ukuze kuthuthukiswe ukuzinza kwe-PCD. Njengamanje, inqubo yokulungiselela izinto ze-PCD iyathuthuka, ukuqina komkhiqizo kuhle, i-anisotropy iye yathuthukiswa kakhulu, yaqaphela ukukhiqizwa kwezohwebo, izimboni ezihlobene zithuthuka ngokushesha.
(2) Ukucutshungulwa kwe-PCD blade
① inqubo yokusika
I-PCD inobulukhuni obuphezulu, ukumelana nokugqokwa okuhle kanye nenqubo yokusika enzima kakhulu.
② inqubo yokushisela
I-PDC kanye nomzimba wommese nge-clamp engumshini, i-bonding kanye ne-brazing. I-Brazing ukucindezela i-PDC ku-matrix ye-carbide, okuhlanganisa i-vacuum brazing, i-vacuum diffusion welding, i-high frequency induction heat brazing, i-laser welding, njll. I-high frequency induction heat brazing inezindleko eziphansi kanye nembuyiselo ephezulu, futhi isetshenziswe kabanzi. Izinga le-welding lihlobene ne-flux, i-welding alloy kanye nokushisa kwe-welding. Izinga lokushisa lokushisela (ngokuvamile elingaphansi kuka-700 ° ℃) linomthelela omkhulu kakhulu, izinga lokushisa liphezulu kakhulu, kulula ukubangela i-PCD graphitization, noma ngisho "nokushisa ngokweqile", okuthinta ngokuqondile umphumela wokushisela, futhi izinga lokushisa eliphansi kakhulu lizoholela ekungeneni kwamandla okushisela. Izinga lokushisa lokushisela lingalawulwa isikhathi sokufakelwa kanye nokujula kobomvu be-PCD.
③ blade ukugaya inqubo
Inqubo yokugaya ithuluzi le-PCD iwukhiye wenqubo yokukhiqiza. Ngokuvamile, inani eliphakeme le-blade ne-blade lingaphakathi kwe-5um, futhi i-arc radius ingaphakathi kwe-4um; indawo yokusika yangaphambili nangemuva iqinisekisa ukuqedwa okuthile okungaphezulu, futhi yehlise nendawo yokusika yangaphambili i-Ra ibe ngu-0.01 μ m ukuze ihlangabezane nezidingo zesibuko, yenza ama-chips ageleze eduze kommese wangaphambili futhi avimbele ukunamathela kommese.
Inqubo yokugaya i-blade ihlanganisa ukugaya i-diamond blade blade grinding, i-electric spark blade grinding (EDG), i-metal binder super hard abrasive grinding wheel online electrolytic finishing blade grinding (ELID), umshini wokugaya oyinhlanganisela. Phakathi kwazo, i-diamond grinding wheel mechanical blade yokugaya yiyona evuthiwe kakhulu, esetshenziswa kakhulu.
Ukuhlola okuhlobene: ① isondo lokugaya izinhlayiyana ezimahhashi kuzoholela ekugoqekeni okukhulu kwe-blade, futhi usayizi wezinhlayiyana zesondo lokugaya uyancipha, futhi ikhwalithi yensingo ibangcono; usayizi wezinhlayiyana ② wesondo lokugaya uhlobene eduze nekhwalithi ye-blade yezinhlayiyana ezinhle noma amathuluzi e-PCD eyizinhlayiyana ze-ultrafine, kodwa unomthelela olinganiselwe kumathuluzi e-PCD yezinhlayiyana ezimahhadla.
Ucwaningo oluhlobene ekhaya nakwamanye amazwe ikakhulukazi lugxile endleleni kanye nenqubo yokugaya i-blade. Emshinini wokugaya i-blade, ukukhishwa kwe-thermochemical nokususwa ngomshini yikona okubusayo, futhi ukususwa kwama-brittle kanye nokususwa kokukhathala kuncane uma kuqhathaniswa. Uma ugaya, ngokuya ngamandla nokumelana nokushisa kwamasondo ahlukene okugaya amadayimane abophayo, thuthukisa isivinini kanye nokushwiba imvamisa yesondo lokugaya ngangokunokwenzeka, gwema ukonakala nokususwa kokukhathala, thuthukisa ingxenye yokususwa kwe-thermochemical, futhi unciphise ukuhwalala kwendawo. Ubulukhuni obungaphezulu bokugaya okomile buphansi, kodwa kalula ngenxa yokushisa okuphezulu, ukushisa ithuluzi,
Inqubo yokugaya i-blade idinga ukunaka: ① khetha amapharamitha enqubo yokugaya i-blade, ingenza ikhwalithi yomlomo onqenqemeni ibe yinhle kakhulu, indawo yangaphambili nangemuva yeblade iqedele phezulu. Kodwa-ke, futhi ucabangele amandla aphezulu okugaya, ukulahlekelwa okukhulu, ukusebenza kahle kokugaya okuphansi, izindleko eziphezulu; ② khetha ikhwalithi ephusile yesondo lokugaya, okuhlanganisa uhlobo lwe-binder, usayizi wezinhlayiyana, ukugxiliswa, ukuhlanganisa, ukugqoka isondo lokugaya, nezimo zokugaya ezizwakalayo ezomile nezimanzi, ingathuthukisa ithuluzi ngaphambili nasekhoneni elingemuva, inani lokudlula ithiphu lommese neminye imingcele, kuyilapho ithuthukisa ikhwalithi yendawo yethuluzi.
Isondo elihlukene lokugaya idayimane elibophayo linezici ezihlukene, kanye nendlela yokugaya ehlukene kanye nomphumela. Isondo lesihlabathi se-resin binder diamond lithambile, Izinhlayiya zokugaya kulula ukuwa ngaphambi kwesikhathi, Azikwazi ukumelana nokushisa, Ingaphezulu likhubazeka kalula ngenxa yokushisa, Indawo yokugaya i-Blade ijwayele ukugqoka amamaki, Ubulukhuni obukhulu; Isondo lokugaya i-Metal binder diamond ligcinwa libukhali ngokuchotshozwa kokugaya, Ukuhleleka okuhle, ukuvela, Ubulukhuni obuphansi be-blade yokugaya, ukusebenza kahle okuphezulu, Nokho, ikhono elibophezelayo lezinhlayiya zokugaya lenza ukuzilola kube mpofu, Futhi onqenqemeni lokusika kulula ukushiya igebe lomthelela, Okubangela umonakalo omkhulu we-marginal; Isondo lokugaya idayimane le-ceramic linamandla amaphakathi, Ukusebenza okuhle kokuzithokozisa, Izimbotshana eziningi zangaphakathi, ukususwa kothuli lwe-Favfor nokukhipha ukushisa, Lingakwazi ukuzivumelanisa nezinhlobonhlobo zokupholisa, Izinga lokushisa eliphansi lokugaya, Isondo lokugaya aligugile, Ukugcinwa komumo omuhle, Ukunemba kokusebenza kahle kakhulu, Nokho, umzimba wedayimane ugaya phezu kwethuluzi lokugaya futhi uholela ekubumbeni. Sebenzisa ngokuya ngezinto zokucubungula, ukusebenza kahle kokugaya okuphelele, ukuqina kwe-abrasive kanye nekhwalithi ephezulu yendawo yokusebenza.
Ucwaningo ngokusebenza kahle kokugaya lugxile kakhulu ekuthuthukiseni ukukhiqiza nokulawula izindleko. Ngokuvamile, isilinganiso sokugaya u-Q (ukususwa kwe-PCD ngesikhathi seyunithi) kanye nesilinganiso sokugqoka G (isilinganiso sokususwa kwe-PCD nokulahlekelwa kwesondo lokugaya) kusetshenziswa njengemibandela yokuhlola.
Isazi saseJalimane i-KENTER sigaya ithuluzi le-PCD ngokucindezelwa okungaguquki, ukuhlola: ① kwandisa isivinini sesondo lokugaya, usayizi wezinhlayiyana ze-PDC nokugxila kokupholisa, izinga lokugaya nesilinganiso sokugqoka kuyancishiswa; ② kwandisa usayizi wezinhlayiyana zokugaya, kwandisa ingcindezi engaguquki, kukhulisa ukugcwala kwedayimane esondweni lokugaya, izinga lokugaya kanye nokukhuphuka kwesilinganiso sokugqoka; ③ uhlobo lokuhlanganisa luhlukile, izinga lokugaya nesilinganiso sokugqoka lihlukile. I-KENTER Inqubo yokugaya i-blade yethuluzi le-PCD yafundwa ngokuhlelekile, kodwa umthelela wenqubo yokugaya i-blade ayizange ihlaziywe ngokuhlelekile.
3. Ukusetshenziswa nokwehluleka kwamathuluzi okusika i-PCD
(1) Ukukhethwa kwemingcele yokusika ithuluzi
Ngesikhathi sokuqala sethuluzi le-PCD, umlomo onqenqemeni olucijile kancane kancane wadlula, futhi ikhwalithi ye-machining surface yaba ngcono. I-passivation ingasusa ngokuphumelelayo i-micro gap kanye nama-burrs amancane alethwe ukugaya kwe-blade, ithuthukise ikhwalithi yobuso bonqenqema lokusika, futhi ngesikhathi esifanayo, yakha i-radius enqenqemeni eyindilinga ukuze icindezele futhi ilungise indawo ecutshunguliwe, ngaleyo ndlela ithuthukise ikhwalithi yendawo yokusebenza.
I-PCD Tool surface Milling aluminium alloy, isivinini sokusika ngokuvamile singu-4000m / min, ukucutshungulwa kwembobo kuvame ukuba ngu-800m / min, ukucutshungulwa kwensimbi ephezulu ye-elastic-plastic non-ferrous kufanele kuthathe isivinini esiphezulu sokujika (300-1000m / min). Ivolumu yokuphakelayo ngokuvamile iyanconywa phakathi kuka-0.08-0.15mm/r. Ivolumu yokuphakelayo enkulu kakhulu, amandla okusika akhuphuka, indawo esele yejometri yendawo yokusebenza; umthamo omncane wokuphakelayo, ukwanda kokushisa okusikayo, nokuguga okwandisiwe. Ukujula kokusika kuyanda, amandla okusika ayanda, ukushisa okusika kuyanda, impilo iyancipha, ukujula kokusika ngokweqile kungabangela kalula ukuwa kwe-blade; ukujula okuncane kokusika kuzoholela ekuqineni kwemishini, ukuguga ngisho nokuwa kwe-blade.
(2) Gqoka ifomu
I-workpiece yokucubungula ithuluzi, ngenxa yokungqubuzana, izinga lokushisa eliphezulu nezinye izizathu, ukugqoka akunakugwenywa. Ukuguga kwethuluzi ledayimane kuhlanganisa izigaba ezintathu: isigaba sokuqala sokuguga ngokushesha (esaziwa nangokuthi isigaba soshintsho), isigaba sokugqoka esizinzile esinezinga lokuguga elingaguquki, kanye nesigaba sokuguga esisheshayo. Isigaba sokugqoka ngokushesha sibonisa ukuthi ithuluzi alisebenzi futhi lidinga ukugaywa kabusha. Izinhlobo zokugqokwa zamathuluzi okusika zifaka ukunamathela okunamathelayo (ukugqokwa kokushisela okubandayo), ukugqokwa kokusabalalisa, ukuguga, ukugqokwa kwe-oxidation, njll.
Ihlukile kumathuluzi endabuko, indlela yokugqokwa yamathuluzi e-PCD ukunamathela okunamathelayo, ukugqokwa kwe-diffusion kanye nokulimala kongqimba lwe-polycrystalline. Phakathi kwazo, ukulimala kwe-polycrystal layer yisizathu esiyinhloko, esibonakaliswa njengokuwa kwe-blade ecashile okubangelwa umthelela wangaphandle noma ukulahlekelwa kwe-adhesive ku-PDC, okwenza igebe, eliyingxenye yokulimala kwemishini ngokomzimba, okungaholela ekunciphiseni ukunemba kokucubungula kanye ne-scrap of workpieces. Usayizi wezinhlayiyana ze-PCD, ifomu le-blade, i-Angle ye-blade, i-workpiece material kanye nemingcele yokucubungula kuzothinta amandla e-blade blade namandla okusika, bese kubangele ukulimala kongqimba lwe-polycrystal. Emsebenzini wobunjiniyela, usayizi wezinhlayiya zempahla eluhlaza okufanele, imingcele yamathuluzi kanye nemingcele yokucubungula kufanele kukhethwe ngokuvumelana nezimo zokucubungula.
4. Ukuthuthukiswa komkhuba wamathuluzi wokusika we-PCD
Njengamanje, uhla lokusetshenziswa kwethuluzi le-PCD lunwetshiwe kusukela ekuphendukeni kwendabuko kuya ekubholeni, ukugaya, ukusika ngesivinini esikhulu, futhi sekusetshenziswe kabanzi ekhaya naphesheya. Ukuthuthuka okusheshayo kwezimoto zikagesi akulethanga nje umthelela embonini yezimoto ezijwayelekile kuphela, kodwa kuphinde kwaletha izinselelo ezingakaze zibonwe embonini yamathuluzi, kunxenxa imboni yamathuluzi ukuthi isheshise ukusebenza kahle nokusungula izinto ezintsha.
Ukusetshenziswa okubanzi kwamathuluzi okusika e-PCD kuye kwajula futhi kwakhuthaza ucwaningo nokuthuthukiswa kwamathuluzi okusika. Ngokujula kocwaningo, ukucaciswa kwe-PDC kuya ngokuya kuba kuncane futhi kuncane, ukwenziwa ngcono kwekhwalithi yokuhluzwa okusanhlamvu, ukufana kokusebenza, izinga lokugaya kanye nesilinganiso sokugqoka kuya phezulu nangaphezulu, ukwakheka nokuhlukahluka kwesakhiwo. Izikhombisi-ndlela zocwaningo zamathuluzi e-PCD zihlanganisa: ① ucwaningo nokuthuthukisa ungqimba oluncane lwe-PCD; ② cwaninga futhi uthuthukise izinto zamathuluzi e-PCD amasha; ③ ucwaningo kumathuluzi we-PCD wokushisela angcono futhi wehlise izindleko; ④ ucwaningo luthuthukisa inqubo yokugaya ithuluzi le-PCD ukuze kuthuthukiswe ukusebenza kahle; ⑤ ucwaningo luthuthukisa amapharamitha wamathuluzi e-PCD futhi lusebenzise amathuluzi ngokuya ngezimo zendawo; ⑥ ucwaningo lukhetha ngokunengqondo amapharamitha wokusika ngokuya ngezinto ezicutshunguliwe.
isifinyezo esifushane
(1) Ithuluzi le-PCD lokusika ukusebenza, yenza ukushoda kwamathuluzi amaningi e-carbide; ngesikhathi esifanayo, intengo iphansi kakhulu kunethuluzi elilodwa le-crystal diamond, ekusikeni kwesimanje, iyithuluzi elithembisayo;
(2) Ngokohlobo nokusebenza kwezinto ezicutshungulwayo, ukukhethwa okufanele kosayizi wezinhlayiyana nemingcele yamathuluzi e-PCD, okuyisisekelo sokukhiqiza nokusetshenziswa kwamathuluzi,
(3) Impahla ye-PCD inobulukhuni obuphezulu, okuyimpahla efanelekile yokusika isifunda sommese, kodwa futhi iletha ubunzima bokukhiqiza amathuluzi. Lapho kukhiqizwa, kucatshangelwe kabanzi ubunzima benqubo kanye nezidingo zokucubungula, ukuze kuzuzwe ukusebenza kwezindleko ezingcono kakhulu;
(4) Izinto zokucubungula i-PCD esifundeni sommese, kufanele sikhethe ngokunengqondo imingcele yokusika, ngesisekelo sokuhlangabezana nokusebenza komkhiqizo, ngangokunokwenzeka ukuze sinwebe impilo yesevisi yethuluzi ukuze sifinyelele ibhalansi yokuphila kwamathuluzi, ukusebenza kahle kokukhiqiza kanye nekhwalithi yomkhiqizo;
(5) Cwaninga futhi uthuthukise izinto zamathuluzi e-PCD amasha ukuze unqobe izithiyo zayo ezingokwemvelo
Lesi sihloko sithathwe ku-"inethiwekhi superhard impahla"
Isikhathi sokuthumela: Mar-25-2025
