Ithuluzi le-PCD lenziwe nge-polycrystalline diamond knife tip kanye ne-carbide matrix ngokusebenzisa izinga lokushisa eliphezulu kanye ne-high pressure sintering. Alikwazi nje ukunikeza ukusebenza okugcwele ezinzuzweni zobulukhuni obuphezulu, i-thermal conductivity ephezulu, i-friction coefficient ephansi, i-thermal expansion coefficient ephansi, i-affinity encane nensimbi kanye ne-non-metal, i-high elastic modulus, i-no cleaving surface, i-isotropic, kodwa futhi licabangele amandla aphezulu e-alloy eqinile.
Ukuzinza kokushisa, ukuqina komthelela kanye nokumelana nokuguguleka kuyizinkomba zokusebenza eziyinhloko ze-PCD. Ngenxa yokuthi isetshenziswa kakhulu ezindaweni zokushisa eziphakeme kanye nokucindezeleka okuphezulu, ukuzinza kokushisa kuyinto ebaluleke kakhulu. Ucwaningo lubonisa ukuthi ukuzinza kokushisa kwe-PCD kunomthelela omkhulu ekumelaneni kwayo nokuguguleka kanye nokuqina komthelela. Idatha ikhombisa ukuthi lapho izinga lokushisa liphakeme kuno-750℃, ukumelana nokuguguleka kanye nokuqina komthelela we-PCD ngokuvamile kwehla ngo-5% -10%.
Isimo sekristalu se-PCD sinquma izakhiwo zayo. Esakhiweni esincane, ama-athomu ekhabhoni akha izibopho ze-covalent nama-athomu amane aseduze, athole isakhiwo se-tetrahedral, bese akha ikristalu ye-athomu, enamandla okuqondiswa okuqinile kanye namandla okubopha, kanye nobunzima obuphezulu. Izinkomba zokusebenza eziyinhloko ze-PCD zimi kanje: ① ubulukhuni bungafinyelela ku-8000 HV, izikhathi ezingu-8-12 ze-carbide; ② ukuhanjiswa kokushisa kungu-700W / mK, izikhathi ezingu-1.5-9, ngisho nangaphezulu kune-PCBN nethusi; ③ i-friction coefficient ngokuvamile ingu-0.1-0.3 kuphela, ingaphansi kakhulu kune-0.4-1 ye-carbide, okunciphisa kakhulu amandla okusika; ④ i-thermal expansion coefficient ingu-0.9x10-6-1.18x10-6,1/5 ye-carbide kuphela, okunganciphisa ukuguqulwa kokushisa futhi kuthuthukise ukunemba kokucubungula; ⑤ nezinto ezingezona ezensimbi azinawo amandla amaningi okwakha amaqhubu.
I-cubic boron nitride inokumelana okunamandla kwe-oxidation futhi ingacubungula izinto eziqukethe insimbi, kodwa ubunzima buphansi kunedayimane elilodwa lekristalu, isivinini sokucubungula sihamba kancane futhi ukusebenza kahle kuphansi. Idayimane elilodwa lekristalu linobunzima obukhulu, kodwa ukuqina akwanele. I-Anisotropy yenza kube lula ukuhlukana eduze kobuso (111) ngaphansi komthelela wamandla angaphandle, futhi ukusebenza kahle kokucubungula kunqunyelwe. I-PCD iyi-polymer eyenziwe yizinhlayiya zedayimane ezinobukhulu be-micron ngezindlela ezithile. Isimo sokungahleleki sokuqongelela kwezinhlayiya okungahlelekile kuholela esimweni sayo se-isotropic esikhulu, futhi akukho ndawo eqondile neqhekekayo emandleni okudonsa. Uma kuqhathaniswa nedayimane elilodwa lekristalu, umngcele wokusanhlamvu we-PCD unciphisa ngempumelelo i-anisotropy futhi uthuthukise izakhiwo zemishini.
1. Izimiso zokuklama zamathuluzi okusika e-PCD
(1) Ukukhetha okunengqondo kosayizi wezinhlayiya ze-PCD
Ngokwethiyori, i-PCD kufanele izame ukucwenga okusanhlamvu, futhi ukusatshalaliswa kwezithasiselo phakathi kwemikhiqizo kufanele kufane ngangokunokwenzeka ukuze kunqotshwe i-anisotropy. Ukukhetha usayizi wezinhlayiyana ze-PCD kuhlobene nezimo zokucubungula. Ngokuvamile, i-PCD enamandla aphezulu, ukuqina okuhle, ukumelana okuhle komthelela kanye nokusanhlamvu okuhle kungasetshenziswa ekuqedeni noma ekuqedeni okukhulu, kanti i-PCD yokusanhlamvu okuqinile ingasetshenziswa ekushiseni okujwayelekile okuqinile. Usayizi wezinhlayiyana ze-PCD ungathinta kakhulu ukusebenza kokuguguleka kwethuluzi. Izincwadi ezifanele zikhomba ukuthi lapho okusanhlamvu kwezinto zokusetshenziswa kukhulu, ukumelana nokuguguleka kuyanda kancane kancane ngokuncipha kosayizi wokusanhlamvu, kodwa lapho usayizi wokusanhlamvu uncane kakhulu, lo mthetho awusebenzi.
Ukuhlolwa okuhlobene kukhethe i-diamond powder ezine ezinobukhulu obuphakathi bezinhlayiya ezingu-10um, 5um, 2um kanye no-1um, kwaphethwa ngokuthi: ① Ngokuncipha kobukhulu bezinhlayiya zezinto zokusetshenziswa, i-Co isakazeka ngokulinganayo; ngokuncipha kwe-②, ukumelana nokuguguleka kanye nokumelana nokushisa kwe-PCD kwehla kancane kancane.
(2) Ukukhetha okunengqondo komlomo we-blade kanye nobukhulu be-blade
Uhlobo lomlomo we-blade luhlanganisa kakhulu izakhiwo ezine: unqenqema oluguquliwe, indilinga engaqondakali, indilinga ehlanganisiwe ye-blunt ekhoneni kanye ne-engeli ebukhali. Isakhiwo se-angular esibukhali senza unqenqema lube bukhali, isivinini sokusika sishesha, singanciphisa kakhulu amandla okusika kanye ne-burr, sithuthukise ikhwalithi yobuso bomkhiqizo, sifaneleka kakhulu i-aluminium alloy ephansi ye-silicon kanye nobunye ubulukhuni obuphansi, ukuqeda insimbi engagqwali ngokulinganayo. Isakhiwo esiyindilinga esingaqondakali singawudlulisa umlomo we-blade, sakhe i-R Angle, sivimbele ngempumelelo ukuphuka kwe-blade, sifanele ukucubungula i-aluminium alloy ephakathi nendawo / ephezulu ye-silicon. Kwezinye izimo ezikhethekile, njengokujula kokusika okungajulile kanye nokudla okuncane kommese, isakhiwo esiyindilinga esibuthuntu siyathandwa. Isakhiwo sonqenqema oluguquliwe singandisa imiphetho namakhona, sizinzise i-blade, kodwa ngasikhathi sinye sizokhulisa ingcindezi kanye nokumelana nokusika, sifaneleka kakhulu ukusika i-aluminium alloy ephezulu ye-silicon esindayo.
Ukuze kube lula i-EDM, ngokuvamile khetha ungqimba lweshidi le-PDC elincane (0.3-1.0mm), kanye nongqimba lwe-carbide, ubukhulu obuphelele bethuluzi bungaba ngu-28mm. Ungqimba lwe-carbide akufanele lube lukhulu kakhulu ukuze kugwenywe ukuhlukaniswa okubangelwa umehluko wokucindezeleka phakathi kwezindawo zokubopha.
2, inqubo yokukhiqiza amathuluzi e-PCD
Inqubo yokukhiqiza ithuluzi le-PCD inquma ngqo ukusebenza kokusika kanye nokuphila kwenkonzo yaleli thuluzi, okuyisihluthulelo sokusetshenziswa kwalo kanye nokuthuthukiswa kwalo. Inqubo yokukhiqiza ithuluzi le-PCD iboniswe kuMfanekiso 5.
(1) Ukukhiqizwa kwamaphilisi e-PCD ahlanganisiwe (i-PDC)
① Inqubo yokukhiqiza ye-PDC
I-PDC ngokuvamile yakhiwa yi-powder yedayimane yemvelo noma yokwenziwa kanye ne-ejenti yokubopha ekushiseni okuphezulu (1000-2000℃) kanye nomfutho ophezulu (5-10 atm). I-ejenti yokubopha yakha ibhuloho lokubopha eline-TiC, Sic, Fe, Co, Ni, njll. njengezingxenye eziyinhloko, kanti ikristalu yedayimane ifakwa emathanjeni ebhuloho lokubopha ngesimo sesibopho se-covalent. I-PDC ngokuvamile yenziwa amadiski anobubanzi obungaguquki kanye nobukhulu, kanye nokugaya nokupholisha kanye nezinye izindlela zokwelapha zomzimba nezamakhemikhali ezihambisanayo. Empeleni, ifomu elifanele le-PDC kufanele ligcine izici zomzimba ezinhle kakhulu zedayimane yekristalu eyodwa ngangokunokwenzeka, ngakho-ke, izithasiselo emzimbeni we-sintering kufanele zibe zincane ngangokunokwenzeka, ngesikhathi esifanayo, inhlanganisela yesibopho se-DD sezinhlayiya ngangokunokwenzeka,
② Ukuhlukaniswa kanye nokukhethwa kwezihlanganisi
I-binder iyisici esibaluleke kakhulu esithinta ukuzinza kokushisa kwethuluzi le-PCD, elithinta ngqo ubulukhuni balo, ukumelana nokuguguleka kanye nokuzinza kokushisa. Izindlela ezivamile zokubopha i-PCD yilezi: insimbi, i-cobalt, i-nickel kanye nezinye izinsimbi zokuguquka. I-Co ne-W powder exubile yasetshenziswa njenge-ejenti yokubopha, futhi ukusebenza okuphelele kwe-PCD yokushisa kwakungcono kakhulu lapho ingcindezi yokwenziwa yayingu-5.5 GPa, izinga lokushisa lokushisa lalingu-1450℃ kanye nokushisa imizuzu engu-4. I-SiC, i-TiC, i-WC, i-TiB2, nezinye izinto ze-ceramic. I-SiC Ukuzinza kokushisa kwe-SiC kungcono kunokwe-Co, kodwa ubulukhuni kanye nokuqina kokuqhekeka kuphansi kakhulu. Ukunciphisa okufanele usayizi wezinto zokusetshenziswa kungathuthukisa ubulukhuni kanye nokuqina kwe-PCD. Akukho okunamathelayo, okune-graphite noma eminye imithombo yekhabhoni ekushiseni okuphezulu kakhulu kanye nokucindezela okuphezulu okushiswe kudayimane le-polymer le-nanoscale (NPD). Ukusebenzisa i-graphite njengesandulela sokulungiselela i-NPD yizimo ezidinga kakhulu, kodwa i-NPD yokwenziwa inobulukhuni obukhulu kakhulu kanye nezakhiwo ezinhle kakhulu zemishini.
Ukukhethwa nokulawulwa kwezinhlamvu ezingu-③
Impuphu yedayimane yezinto ezingavuthiwe iyisici esibalulekile esithinta ukusebenza kwe-PCD. Ukwelapha i-micropowder yedayimane kusengaphambili, ukwengeza inani elincane lezinto ezivimbela ukukhula kwezinhlayiya zedayimane ezingavamile kanye nokukhethwa okunengqondo kwezithasiselo ezikhipha i-sintering kungavimbela ukukhula kwezinhlayiya zedayimane ezingavamile.
I-NPD emsulwa kakhulu enesakhiwo esifanayo ingasusa ngempumelelo i-anisotropy futhi ithuthukise kakhulu izakhiwo zemishini. Impuphu yesandulela se-nanographite elungiselelwe ngendlela yokugaya ibhola enamandla aphezulu yasetshenziswa ukulawula okuqukethwe komoya-mpilo ekushiseni okuphezulu ngaphambi kokusinta, iguqula i-graphite ibe yidayimane ngaphansi kwe-18 GPa kanye ne-2100-2300℃, ikhiqiza i-lamella kanye ne-granular NPD, futhi ubulukhuni banda ngokuncipha kobukhulu be-lamella.
④ Ukwelashwa ngamakhemikhali sekwephuzile
Ngesikhathi esifanayo sokushisa (200 ° ℃) nesikhathi (20h), umphumela wokususwa kwe-cobalt we-Lewis acid-FeCl3 wawungcono kakhulu kunowamanzi, kanti isilinganiso esihle kakhulu se-HCl sasingu-10-15g / 100ml. Ukuqina kokushisa kwe-PCD kuyathuthuka njengoba ukujula kokususwa kwe-cobalt kukhuphuka. Ku-PCD ekhula ngokusanhlamvu okuqinile, ukwelashwa kwe-asidi enamandla kungasusa ngokuphelele i-Co, kodwa kunethonya elikhulu ekusebenzeni kwe-polymer; ukwengeza i-TiC ne-WC ukushintsha isakhiwo se-polycrystal yokwenziwa nokuhlanganisa nokwelashwa kwe-asidi enamandla ukuthuthukisa ukuzinza kwe-PCD. Njengamanje, inqubo yokulungiselela izinto ze-PCD iyathuthuka, ukuqina komkhiqizo kuhle, i-anisotropy ithuthukisiwe kakhulu, ithole ukukhiqizwa kwezentengiselwano, izimboni ezihlobene nazo ziyathuthuka ngokushesha.
(2) Ukucutshungulwa kwe-blade ye-PCD
① inqubo yokusika
I-PCD inobulukhuni obuphezulu, ukumelana okuhle nokuguguleka kanye nenqubo yokusika enzima kakhulu.
② inqubo yokushisela
I-PDC kanye nomzimba wommese nge-mechanical clamp, bonding kanye ne-brazing. I-Brazing iwukucindezela i-PDC ku-carbide matrix, okuhlanganisa i-vacuum brazing, i-vacuum diffusion welding, i-high frequency induction heating brazing, i-laser welding, njll. I-high frequency induction heating brazing inezindleko eziphansi kanye nokubuyiselwa okuphezulu, futhi isetshenziswe kabanzi. Ikhwalithi ye-welding ihlobene ne-flux, i-welding alloy kanye ne-welding temperature. Izinga lokushisa le-welding (ngokuvamile liphansi kuno-700 ° ℃) linomthelela omkhulu, izinga lokushisa liphezulu kakhulu, kulula ukulibangela i-PCD graphitization, noma ngisho "nokushisa ngokweqile", okuthinta ngqo umphumela we-welding, futhi izinga lokushisa eliphansi kakhulu lizoholela emandleni anganelanga e-welding. Izinga lokushisa le-welding lingalawulwa yisikhathi sokushisa kanye nokujula kobomvu be-PCD.
③ inqubo yokugaya i-blade
Inqubo yokugaya amathuluzi e-PCD iyisihluthulelo senqubo yokukhiqiza. Ngokuvamile, inani eliphakeme le-blade kanye ne-blade lingaphakathi kwama-5um, kanti i-arc radius ingaphakathi kwama-4um; indawo yokusika yangaphambili neyangemuva iqinisekisa ukuphela kwendawo ethile, futhi inciphisa ngisho nendawo yokusika yangaphambili i-Ra ibe ngu-0.01 μ m ukuze kuhlangatshezwane nezidingo zesibuko, yenze ama-chips ageleze endaweni yommese wangaphambili futhi ivimbele ukunamathela kommese.
Inqubo yokugaya ama-blade ifaka phakathi isondo lokugaya idayimane, ukugaya i-blade kagesi (EDG), i-metal binder super hard abrasive grinding wheel online electrolytic finishing blade grinding (ELID), i-composite blade grinding machining. Phakathi kwazo, isondo lokugaya idayimane yilona elivuthiwe kakhulu, elisetshenziswa kakhulu.
Ukuhlolwa okuhlobene: 1 isondo lokugaya izinhlayiya ezimahhadla lizoholela ekuweni okukhulu kwe-blade, futhi usayizi wezinhlayiya zesondo lokugaya uyancipha, futhi ikhwalithi ye-blade iba ngcono; usayizi wezinhlayiya ze-1 isondo lokugaya uhlobene eduze nekhwalithi ye-blade yamathuluzi e-PCD ezimahhadla noma ama-PCD aqinile kakhulu, kodwa unomthelela olinganiselwe kumathuluzi e-PCD ezinhlayiya ezimahhadla.
Ucwaningo oluhlobene ekhaya nakwamanye amazwe lugxile kakhulu endleleni kanye nenqubo yokugaya ama-blade. Endleleni yokugaya ama-blade, ukususwa kwe-thermochemical kanye nokususwa kwemishini yikona okuhamba phambili, kanti ukususwa kwe-brittle kanye nokususwa kokukhathala kuncane kakhulu. Lapho ukugaya, ngokuya ngamandla kanye nokumelana nokushisa kwamasondo okugaya amadayimane ahlukahlukene e-binding agent, thuthukisa isivinini kanye nemvamisa yokujika kwesondo lokugaya ngangokunokwenzeka, gwema ukuqhekeka kanye nokususwa kokukhathala, thuthukisa isilinganiso sokususwa kwe-thermochemical, futhi unciphise ukuqhekeka kobuso. Ukuqhekeka kobuso bokugaya okomile kuphansi, kodwa kalula ngenxa yokushisa okuphezulu kokucubungula, shisa ubuso bamathuluzi,
Inqubo yokugaya ama-blade idinga ukunaka: ① khetha amapharamitha enqubo yokugaya ama-blade afanele, angenza ikhwalithi yomlomo onqenqemeni ibe ngcono kakhulu, ukuqeda kobuso be-blade yangaphambili neyangemuva kube phezulu. Kodwa-ke, cabanga nangamandla aphezulu okugaya, ukulahlekelwa okukhulu, ukusebenza kahle okuphansi kokugaya, izindleko eziphezulu; ② khetha ikhwalithi yesondo lokugaya efanelekile, kufaka phakathi uhlobo lwe-binder, usayizi wezinhlayiya, ukuhlushwa, i-binder, ukugqoka amasondo okugaya, ngezimo zokugaya ezomile nezimanzi ezifanelekile, ingenza ngcono ikona langaphambili nelangemuva lethuluzi, inani lokudlula kwe-tip yommese kanye neminye imingcele, ngenkathi ithuthukisa ikhwalithi yobuso bethuluzi.
Isondo lokugaya idayimane elibophayo elihlukile linezici ezahlukene, kanye nendlela yokugaya ehlukene kanye nomphumela. Isondo lesihlabathi sedayimane elibophayo le-resin lithambile, Izinhlayiya zokugaya kulula ukuzilahla ngaphambi kwesikhathi, Azinawo ukumelana nokushisa, Ubuso buguguleka kalula ngokushisa, Ubuso bokugaya i-blade buvame ukuguguleka, Ubulukhuni obukhulu; Isondo lokugaya idayimane elibophayo lensimbi ligcinwa libukhali ngokuchoboza ukugaya, Ukwakheka okuhle, ukumboza, Ubulukhuni obuphansi bokugaya i-blade, Ukusebenza kahle okuphezulu, Kodwa-ke, ikhono lokubopha lezinhlayiya zokugaya lenza ukuzilola kube kubi, Futhi unqenqema olusikayo kulula ukushiya igebe lomthelela, Kubangela umonakalo omkhulu wengxenye; Isondo lokugaya idayimane elibophayo le-ceramic linamandla aphakathi, Ukusebenza okuhle kokuzivuselela, Ama-pores amaningi angaphakathi, Kuthandwa ukususwa kothuli kanye nokushabalaliswa kokushisa, Kungavumelanisa nezinhlobo ezahlukene ze-coolant, Izinga lokushisa eliphansi lokugaya, Isondo lokugaya aligugi kangako, Ukugcinwa okuhle kwesimo, Ukunemba kokusebenza kahle okuphezulu, Kodwa-ke, umzimba wokugaya idayimane kanye ne-binder kuholela ekwakhekeni kwemigodi ebusweni bethuluzi. Sebenzisa ngokwezinto zokucubungula, ukusebenza kahle kokugaya okuphelele, ukuqina okunamandla kanye nekhwalithi yobuso bento yokusebenza.
Ucwaningo mayelana nokusebenza kahle kokugaya lugxile kakhulu ekuthuthukiseni umkhiqizo kanye nezindleko zokulawula. Ngokuvamile, izinga lokugaya Q (ukususwa kwe-PCD ngesikhathi ngasinye) kanye nesilinganiso sokuguguleka G (isilinganiso sokususwa kwe-PCD kuya ekulahlekelweni kwesondo lokugaya) kusetshenziswa njengezindlela zokuhlola.
Ithuluzi le-PCD lokugaya isazi saseJalimane i-KENTER elinokucindezela okungaguquki, isivivinyo: ① kwandisa isivinini sesondo lokugaya, usayizi wezinhlayiya ze-PDC kanye nokuhlushwa kwe-coolant, izinga lokugaya kanye nesilinganiso sokuguguleka kuyancishiswa; ② kwandisa usayizi wezinhlayiya zokugaya, kwandisa ingcindezi engaguquki, kwandisa ukuhlushwa kwedayimane esondweni lokugaya, izinga lokugaya kanye nesilinganiso sokuguguleka kwanda; ③ uhlobo lwe-binder luhlukile, izinga lokugaya kanye nesilinganiso sokuguguleka kwahlukile. I-KENTER Inqubo yokugaya i-blade yethuluzi le-PCD yafundwa ngokuhlelekile, kodwa ithonya lenqubo yokugaya i-blade alizange lihlaziywe ngokuhlelekile.
3. Ukusetshenziswa kanye nokwehluleka kwamathuluzi okusika e-PCD
(1) Ukukhethwa kwamapharamitha okusika amathuluzi
Ngesikhathi sokuqala kwethuluzi le-PCD, umlomo ocijile womphetho wawuncipha kancane kancane, futhi ikhwalithi yobuso bomshini yaba ngcono. Ukucindezela kungasusa ngempumelelo igebe elincane kanye nama-burrs amancane alethwa ukugaya i-blade, kuthuthukise ikhwalithi yobuso bomphetho wokusika, futhi ngasikhathi sinye, kwakha i-radius yomphetho oyindilinga ukuze kucindezelwe futhi kulungiswe ubuso obucutshunguliwe, ngaleyo ndlela kuthuthukiswe ikhwalithi yobuso bomsebenzi.
I-aluminium alloy yokugaya ubuso bethuluzi le-PCD, isivinini sokusika ngokuvamile singama-4000m / min, ukucutshungulwa kwemigodi ngokuvamile kungama-800m / min, ukucutshungulwa kwensimbi engenansimbi ephezulu yepulasitiki enwebekayo kufanele kuthathe isivinini sokujika esiphezulu (300-1000m / min). Ivolumu yokuphakela ngokuvamile inconywa phakathi kuka-0.08-0.15mm / r. Ivolumu yokuphakela enkulu kakhulu, amandla okusika akhuphukile, indawo yejometri eseleyo engaphezulu kwendawo yokusebenza; ivolumu yokuphakela encane kakhulu, ukushisa okhuphukile kokusika, kanye nokuguguleka okwandisiwe. Ukujula kokusika kuyanda, amandla okusika ayanda, ukushisa kokusika kuyanda, impilo iyancipha, ukujula kokusika okweqile kungabangela ukuwohloka kwe-blade kalula; ukujula kokusika okuncane kuzoholela ekuqineni kwemishini, ukuguguleka kanye nokuwa kwe-blade ngisho.
(2) Ifomu lokugqoka
Umsebenzi wokucubungula amathuluzi, ngenxa yokungqubuzana, izinga lokushisa eliphezulu kanye nezinye izizathu, ukuguguleka akunakugwenywa. Ukuguguleka kwethuluzi ledayimane kunezigaba ezintathu: isigaba sokuqala sokuguguleka okusheshayo (esaziwa nangokuthi isigaba sokuguquka), isigaba sokuguguleka esizinzile esinezinga lokuguguleka eliqhubekayo, kanye nesigaba esilandelayo sokuguguleka okusheshayo. Isigaba sokuguguleka okusheshayo sibonisa ukuthi ithuluzi alisebenzi futhi lidinga ukugaya kabusha. Izindlela zokuguguleka zamathuluzi okusika zifaka phakathi ukuguguleka okunamathelayo (ukuguguleka kokushisela okubandayo), ukuguguleka kokusabalala, ukuguguleka okuhudulayo, ukuguguleka kokushiswa kwe-oxidation, njll.
Ngokungafani namathuluzi endabuko, uhlobo lokuguguleka kwamathuluzi e-PCD ukuguguleka kokunamathela, ukuguguleka kokusabalala kanye nomonakalo wesendlalelo se-polycrystalline. Phakathi kwazo, umonakalo wesendlalelo se-polycrystal yisona sizathu esiyinhloko, esibonakala njengokuwa kwe-blade okucashile okubangelwa umthelela wangaphandle noma ukulahlekelwa kwe-glue ku-PDC, okwenza igebe, elingomonakalo womshini ongokwenyama, okungaholela ekunciphiseni ukunemba kokucubungula kanye nezingcezu zomsebenzi. Usayizi wezinhlayiya ze-PCD, isimo se-blade, i-blade Angle, izinto zomsebenzi kanye nemingcele yokucubungula kuzothinta amandla e-blade blade kanye namandla okusika, bese kubangele umonakalo wesendlalelo se-polycrystal. Ekuzijwayezeni kobunjiniyela, usayizi wezinhlayiya zezinto zokusetshenziswa eziluhlaza ezifanele, imingcele yamathuluzi kanye nemingcele yokucubungula kufanele kukhethwe ngokuya ngezimo zokucubungula.
4. Umkhuba wokuthuthukiswa kwamathuluzi okusika e-PCD
Njengamanje, ububanzi bokusetshenziswa kwamathuluzi e-PCD buye bandiswa kusukela ekuguqulweni kwendabuko kuya ekubholeni, ekugayeni, ekusikeni ngesivinini esikhulu, futhi kuye kwasetshenziswa kabanzi ekhaya nakwamanye amazwe. Intuthuko esheshayo yezimoto zikagesi ayizange nje ilethe umthelela embonini yezimoto zendabuko, kodwa futhi ilethe izinselelo ezingakaze zibonwe embonini yamathuluzi, inxusa imboni yamathuluzi ukuba isheshise ukwenza ngcono kanye nokusungula izinto ezintsha.
Ukusetshenziswa kabanzi kwamathuluzi okusika e-PCD kuye kwajulisa futhi kwakhuthaza ucwaningo kanye nentuthuko yamathuluzi okusika. Ngokujula kocwaningo, imininingwane ye-PDC iya ngokuya iba mincane, ukwenziwa ngcono kwekhwalithi yokucwenga okusanhlamvu, ukufana kokusebenza, izinga lokugaya kanye nesilinganiso sokuguguleka kuphakeme kakhulu, ukuhlukahluka komumo nesakhiwo. Iziqondiso zocwaningo zamathuluzi e-PCD zifaka: ① ucwaningo kanye nokuthuthukisa ungqimba oluncane lwe-PCD; ② ucwaningo kanye nokuthuthukisa izinto ezintsha zamathuluzi e-PCD; ③ ucwaningo lokuhlanganisa amathuluzi e-PCD angcono kanye nokunciphisa izindleko; ④ ucwaningo luthuthukisa inqubo yokugaya i-blade yamathuluzi e-PCD ukuze kuthuthukiswe ukusebenza kahle; ⑤ ucwaningo luthuthukisa amapharamitha amathuluzi e-PCD futhi lusebenzisa amathuluzi ngokwezimo zendawo; ⑥ ucwaningo lukhetha ngokunengqondo amapharamitha okusika ngokwezinto ezicutshunguliwe.
isifinyezo esifushane
(1) Ukusebenza kokusika amathuluzi e-PCD, kuqedela ukushoda kwamathuluzi amaningi e-carbide; ngesikhathi esifanayo, intengo iphansi kakhulu kunethuluzi elilodwa ledayimane elikristalu, ekusikeni kwanamuhla, liyithuluzi elithembisayo;
(2) Ngokuya ngohlobo kanye nokusebenza kwezinto ezicutshunguliwe, ukukhetha okunengqondo kosayizi wezinhlayiya kanye namapharamitha amathuluzi e-PCD, okuyisisekelo sokukhiqizwa nokusetshenziswa kwamathuluzi,
(3) Izinto ze-PCD zinobulukhuni obuphezulu, okuyinto efanelekile yokusika isifunda sommese, kodwa futhi iletha ubunzima bokukhiqizwa kwamathuluzi okusika. Lapho kukhiqizwa, ukucabangela ngokuphelele ubunzima benqubo nezidingo zokucubungula, ukuze kufezwe ukusebenza kwezindleko okungcono kakhulu;
(4) Izinto zokucubungula ze-PCD esifundeni sommese, kufanele sikhethe ngokufanele amapharamitha okusika, ngokusekelwe ekuhlangabezaneni nokusebenza komkhiqizo, ngangokunokwenzeka ukuze sandise impilo yesevisi yethuluzi ukuze sifinyelele ibhalansi yokuphila kwamathuluzi, ukusebenza kahle kokukhiqiza kanye nekhwalithi yomkhiqizo;
(5) Cwaninga futhi uthuthukise izinto ezintsha zamathuluzi e-PCD ukuze unqobe izinkinga zawo ezingokwemvelo
Lesi sihloko sithathwe ku-"inethiwekhi yezinto eziqinile kakhulu"
Isikhathi sokuthunyelwe: Mashi-25-2025
