Isixhobo se-PCD senziwe ngencam ye-polycrystalline diamond knife kunye ne-carbide matrix ngobushushu obuphezulu kunye noxinzelelo oluphezulu lwe-sintering. Ayinakunika kuphela umdlalo ogcweleyo kwiingenelo zobunzima obuphezulu, i-thermal conductivity ephezulu, i-coefficient ephantsi ye-friction, i-coefficient yokwandisa i-thermal ephantsi, ukudibanisa okuncinci kunye nentsimbi kunye ne-non-metal, i-modulus ephezulu ye-elastic, akukho ukucanda ubuso, i-isotropic, kodwa kwakhona kuthathela ingqalelo amandla aphezulu e-alloy eqinile.
Ukuzinza kwe-Thermal, ukuqina kwempembelelo kunye nokumelana nokunxiba zizona zibonakaliso eziphambili ze-PCD. Ngenxa yokuba isetyenziswa kakhulu kwindawo yokushisa ephezulu kunye noxinzelelo oluphezulu, ukuzinza kwe-thermal yeyona nto ibalulekileyo. Uphononongo lubonisa ukuba ukuzinza kwe-thermal ye-PCD kunempembelelo enkulu ekuxhathiseni kwayo kunye nokuqina kwempembelelo. Idatha ibonisa ukuba xa ubushushu buphezulu kune-750 ℃, ukuxhathisa ukunxiba kunye nokuqina kwempembelelo ye-PCD kuncipha ngokubanzi nge-5% -10%.
I-crystal state ye-PCD inquma iimpawu zayo. Kwi-microstructure, iiathom zekhabhoni zenza i-covalent bonds ezineathom ezine ezikufutshane, zifumane ubume be-tetrahedral, emva koko zenze ikristale yeathom, ene-orientation eyomeleleyo kunye namandla okubopha, kunye nobunzima obuphezulu. Izalathisi eziphambili zokusebenza zePCD zezi zilandelayo: ① ubunzima bunokufikelela kwi-8000 HV, amaxesha angama-8-12 e-carbide; ② i-thermal conductivity yi-700W / mK, amaxesha e-1.5-9, nangaphezulu kune-PCBN kunye nobhedu; ③ i-coefficient ye-friction ngokubanzi yi-0.1-0.3 kuphela, ngaphantsi kwe-0.4-1 ye-carbide, ukunciphisa kakhulu amandla okusika; ④ i-coefficient yokwandiswa kwe-thermal kuphela yi-0.9x10-6-1.18x10-6,1 / 5 ye-carbide, enokunciphisa ukuguqulwa kwe-thermal kunye nokuphucula ukuchaneka kokucubungula; ⑤ kunye nezinto ezingezizo ezentsimbi zinobudlelwane obuncinci ukwenza amaqhuqhuva.
I-Cubic boron nitride inokumelana ne-oxidation eyomeleleyo kwaye inokuqhuba izinto ezinentsimbi, kodwa ukuqina kungaphantsi kwedayimane yekristale enye, isantya sokusebenza sicotha kwaye ukusebenza kakuhle kuphantsi. Idayimani enye yekristale inobunzima obuphezulu, kodwa ukuqina akwanelanga. I-Anisotropy yenza kube lula ukwahlukana kunye (111) phantsi kwempembelelo yamandla angaphandle, kunye nokusebenza kakuhle kulinganiselwe. I-PCD yipolymer eyenziwe ngamasuntswana edayimane anobungakanani be-micron ngeendlela ezithile. Ubume besiphithiphithi sokuqokelelwa kokuphazamiseka kwamasuntswana kukhokelela kubume bayo be-isotropic macroscopic, kwaye akukho ndawo yalathiso kunye nokucandeka kumandla okuqina. Xa kuthelekiswa nedayimane ye-crystal eyodwa, umda weenkozo we-PCD unciphisa ngokufanelekileyo i-anisotropy kwaye ulungise iimpawu zomatshini.
1. Imigaqo yoyilo yezixhobo zokusika zePCD
(1) Ukukhetha okunengqiqo kwe-PCD ubungakanani besuntswana
Ngokwethiyori, i-PCD kufuneka izame ukucokisa iinkozo, kwaye ukuhanjiswa kwezongezo phakathi kweemveliso kufuneka kube ngokufana ngokunokwenzeka ukunqoba i-anisotropy. Ukukhethwa kwesayizi ye-PCD ye-particle nayo ihambelana neemeko zokucubungula. Ngokubanzi, i-PCD enamandla amakhulu, ukuqina okuhle, ukuxhathisa okulungileyo kunye nokutya okuziinkozo okucolekileyo kunokusetyenziselwa ukugqiba okanye ukugqiba okuphezulu, kwaye i-PCD yeenkozo ezirhabaxa ingasetyenziselwa umatshini orhabaxa ngokubanzi. Ubungakanani beqhekeza lePCD bunokuchaphazela kakhulu ukusebenza kwesixhobo. Uncwadi olufanelekileyo lubonisa ukuba xa i-graw material grain ikhulu, ukuxhathisa ukunxiba kuyanda ngokuthe ngcembe ngokuhla kobungakanani bengqolowa, kodwa xa ubungakanani bengqolowa buncinci kakhulu, lo mgaqo awusebenzi.
Imifuniselo enxulumeneyo ikhethe umgubo wedayimani omane kunye nobukhulu obuqhelekileyo bamasuntswana we-10um, 5um, 2um kunye ne-1um, kwaye kwagqitywa ukuba: ① Ngokuhla kobungakanani besuntswana lemathiriyeli ekrwada, iCo yasasazeka ngokulungeleleneyo ngakumbi; kunye nokuncipha kwe-②, ukuxhathisa ukunxiba kunye nokumelana nobushushu kwe-PCD kwehla kancinci.
(2) Ukukhetha okunengqiqo kwifom yomlomo we-blade kunye nobukhulu be-blade
Imo yeblade umlomo ikakhulu ibandakanya izakhiwo ezine: edge inverted, isangqa blunt, inverted edge blunt isangqa composite kunye engile elibukhali. Isakhiwo esibukhali se-angular senza i-edge ebukhali, isantya sokusika sikhawuleza, sinokunciphisa kakhulu amandla okusika kunye ne-burr, ukuphucula umgangatho womgangatho wemveliso, ifaneleke ngakumbi kwi-silicone ephantsi ye-aluminium alloy kunye nobunye ubunzima obuphantsi, i-uniform non-ferrous metal finishing. Ulwakhiwo olujikelezileyo lwe-obtuse lunokugqithisa umlomo we-blade, lwenza i-Angle ye-R, luthintele ngokufanelekileyo ukuphuka kwe-blade, ilungele ukusetyenzwa okuphakathi / okuphezulu kwe-silicon ye-aluminium alloy. Kwezinye iimeko ezikhethekileyo, ezifana nobunzulu bokusika obunzulu kunye nokutya okuncinci kweemela, isakhiwo esijikelezayo esinqabileyo sikhethwayo. Isakhiwo somda ogqwethiweyo sinokunyusa imida kunye neekona, ukuzinzisa i-blade, kodwa kwangaxeshanye kuya kwandisa uxinzelelo kunye nokuchasana nokusika, ukufaneleka ngakumbi kumthwalo onzima ukusika i-silicon ephezulu ye-aluminium alloy.
Ukuze uququzelele i-EDM, ngokuqhelekileyo ukhethe i-PDC sheet layer (0.3-1.0mm), kunye ne-carbide layer, ubuninzi obupheleleyo besixhobo malunga ne-28mm. Uluhlu lwe-carbide alufanele lube lukhulu kakhulu ukuphepha i-stratification ebangelwa ukuhlukana koxinzelelo phakathi kweendawo zokubopha
2, inkqubo yokuvelisa isixhobo sePCD
Inkqubo yokwenziwa kwesixhobo sePCD inquma ngokuthe ngqo ukusebenza kokusika kunye nobomi benkonzo yesixhobo, eyona nto iphambili kwisicelo sayo kunye nophuhliso. Inkqubo yokwenziwa kwesixhobo sePCD iboniswe kuMfanekiso 5.
(1) Ukwenziwa kwePCD iipilisi ezihlanganisiweyo (PDC)
① Inkqubo yokwenziwa kwePDC
I-PDC ngokubanzi yenziwe ngomgubo wedayimane wendalo okanye wokwenziwa kunye ne-arhente ebophelelayo kubushushu obuphezulu (1000-2000℃) kunye noxinzelelo oluphezulu (5-10 atm). I-arhente ebophelelayo yenza ibhulorho ebophelelayo kunye ne-TiC, i-Sic, i-Fe, i-Co, i-Ni, njl njl njengamacandelo aphambili, kunye ne-diamond crystal ifakwe kwi-skeleton yebhulorho ebophezelayo ngendlela ye-covalent bond. I-PDC ngokuqhelekileyo yenziwa kwiidiski ezinobubanzi obusisigxina kunye nobukhulu, kunye nokusila kunye nokupolishwa kunye nolunye unyango oluhambelanayo lomzimba kunye neekhemikhali. Ngokwenene, uhlobo olufanelekileyo lwePDC kufuneka lugcine iimpawu ezibalaseleyo zomzimba zedayimani enye yekristale kangangoko kunokwenzeka, ngoko ke, izongezo kumzimba we-sintering kufuneka zibe zincinci kangangoko kunokwenzeka, kwangaxeshanye, indibaniselwano ye-DD bond yamasuntswana kangangoko kunokwenzeka,
② Ukuhlelwa kunye nokukhethwa kwezibophelelo
I-binder iyona nto ibaluleke kakhulu echaphazela ukuzinza kwe-thermal yesixhobo se-PCD, esichaphazela ngokuthe ngqo ubunzima bayo, ukuxhatshazwa kokugqoka kunye nokuzinza kwe-thermal. Iindlela eziqhelekileyo zokudibanisa i-PCD zezi: isinyithi, i-cobalt, i-nickel kunye nezinye iintsimbi zenguqu. I-Co kunye ne-W powder exutywe isetyenziswe njenge-agent edibeneyo, kwaye ukusebenza okubanzi kwe-PCD ye-sintering kwakungcono xa uxinzelelo lwe-synthesis luyi-5.5 GPa, ukushisa kwe-sintering kwakuyi-1450 ℃ kunye ne-insulation ye-4min. SiC, TiC, WC, TiB2, kunye nezinye izinto zeceramic. I-SiC Uzinzo lwe-thermal ye-SiC lungcono kunolo lwe-Co, kodwa ukuqina kunye nokuqina kwe-fracture kuphantsi. Ukunciphisa ngokufanelekileyo ubungakanani bezinto eziluhlaza kunokuphucula ukuqina kunye nokuqina kwe-PCD. Akukho ukunamathela, kunye negraphite okanye enye imithombo yekhabhoni kwiqondo lokushisa eliphezulu kunye noxinzelelo oluphezulu olutshiswe kwi-nanoscale polymer diamond (NPD). Ukusebenzisa i-graphite njenge-precursor ukulungiselela i-NPD yeyona meko inzima kakhulu, kodwa i-NPD yokwenziwa inobulukhuni obuphezulu kunye neyona mpahla ingcono yomatshini.
Ukukhethwa kunye nolawulo ③ iinkozo
Ipowder yedayimane ekrwada yinto ephambili echaphazela ukusebenza kwePCD. Ukulungisa i-diamond micropowder, ukongeza inani elincinci lezinto ezithintela ukukhula kwamasuntswana edayimani okungaqhelekanga kunye nokukhethwa okufanelekileyo kwezongezo ze-sintering kunokuthintela ukukhula kwamasuntswana edayimani angaqhelekanga.
I-NPD ecocekileyo ephezulu enesakhiwo esifanayo inokuphelisa ngokufanelekileyo i-anisotropy kwaye iphucule ngakumbi iimpawu zomatshini. I-nanographite precursor powder elungiselelwe yindlela yokugaya ibhola ephezulu yamandla yayisetyenziselwa ukulawula umxholo we-oksijini kwiqondo lokushisa eliphezulu langaphambi kwe-sintering, ukuguqula igraphite ibe yidayimane phantsi kwe-18 GPa kunye ne-2100-2300 ℃, i-lamella evelisa i-lamella kunye ne-NPD ye-granular, kwaye ukuqina kwanda ngokuncipha kobunzima be-lamella.
④ Unyango lwasemva kwexesha lweekhemikhali
Kwiqondo lokushisa elifanayo (200 ° ℃) kunye nexesha (20h), umphumo wokususwa kwe-cobalt ye-Lewis acid-FeCl3 yayingcono kakhulu kunamanzi, kwaye umlinganiselo ofanelekileyo weHCl wawuyi-10-15g / 100ml. Ukuzinza kwe-thermal ye-PCD kuphucula njengoko ubunzulu bokususwa kwe-cobalt bukhula. Ukukhula kwe-PCD ye-coarse-grained, unyango oluqinileyo lwe-asidi lunokususa ngokupheleleyo i-Co, kodwa lunempembelelo enkulu ekusebenzeni kwepolymer; ukongeza i-TiC kunye ne-WC ukutshintsha isakhiwo se-polycrystal yokwenziwa kunye nokudibanisa nonyango oluqinileyo lwe-asidi ukuphucula ukuzinza kwe-PCD. Okwangoku, inkqubo yokulungiselela izinto ze-PCD iyaphucuka, ukuqina kwemveliso kulungile, i-anisotropy iphuculwe kakhulu, iye yaqonda imveliso yorhwebo, amashishini anxulumeneyo akhula ngokukhawuleza.
(2) Ukuqhutyelwa kwe-PCD blade
① inkqubo yokusika
I-PCD inobunzima obuphezulu, ukuxhathisa okulungileyo kunye nenkqubo yokusika enzima.
② inkqubo welding
I-PDC kunye nomzimba wemela ngokubambelela koomatshini, ukudibanisa kunye nokubrawuza. I-Brazing kukucinezela i-PDC kwi-matrix ye-carbide, kuquka i-vacuum brazing, i-vacuum diffusion welding, i-high frequency induction heat brazing, i-laser welding, njl. Umgangatho we-welding uhambelana ne-flux, i-alloy welding kunye nokushisa kwe-welding. Ubushushu be-welding (ubukhulu obungaphantsi kwe-700 ° ℃) bunempembelelo enkulu, iqondo lobushushu liphezulu kakhulu, kulula ukubangela i-PCD graphitization, okanye "ukutshisa kakhulu", echaphazela ngokuthe ngqo umphumo we-welding, kunye nobushushu obuphantsi kakhulu kuya kukhokelela kumandla anganeleyo. Ubushushu be-welding bunokulawulwa lixesha lokugquma kunye nobunzulu be-PCD ebomvu.
③ inkqubo yokusila incakuba
Inkqubo yokusila isixhobo sePCD sisitshixo kwinkqubo yokuvelisa. Ngokuqhelekileyo, ixabiso eliphezulu le-blade kunye ne-blade lingaphakathi kwe-5um, kwaye i-arc radius ingaphakathi kwe-4um; umphezulu wokusika wangaphambili nasemva uqinisekisa ukugqitywa komphezulu othile, kwaye kwanokunciphisa umphezulu wokusika i-Ra ukuya kwi-0.01 μ m ukuhlangabezana neemfuno zesibuko, yenza iitshiphusi zihambe ecaleni komphezulu wemela kwaye zithintele imela encamathelayo.
Inkqubo yokusila i-blade ibandakanya ivili ledayimani lokusila i-blade yomatshini yokusila, i-spark blade grinding (EDG), i-metal binder super hard abrasive grinding wheel online electrolytic finishing blade grinding (ELID), i-composite blade grinding machining. Phakathi kwazo, ivili lokusila idayimani ngomatshini wokugaya iblade yeyona ivuthiweyo, eyona isetyenziswa kakhulu.
Imifuniselo eyeleleneyo: ① ivili lokusila isuntswana elirhabaxa liza kukhokelela ekuweni kwencakuba, kwaye ubungakanani besuntswana levili lokusila buyancipha, kwaye umgangatho weblade ubangcono; Ubungakanani besuntswana le-② lokusila ivili lisondelelene nomgangatho wencakuba wesuntswana elicolekileyo okanye i-ultrafine yezixhobo zePCD, kodwa inefuthe elilinganiselweyo kwisixhobo esirhabaxa sePCD.
Uphando olunxulumeneyo ekhaya nakwamanye amazwe ikakhulu lujolise kwindlela kunye nenkqubo yokusila i-blade. Kwisixhobo sokusila i-blade, ukususwa kwe-thermochemical kunye nokususwa ngoomatshini yeyona nto iphambili, kwaye ukususwa kwe-brittle kunye nokususwa kokudinwa kuncinci. Xa kusila, ngokokomelela kunye nokumelana nobushushu be-arhente ebophelelayo ehlukeneyo yamavili edayimani yokusila, ukuphucula isantya kunye nokujikeleza rhoqo kwevili lokusila kangangoko kunokwenzeka, ukuphepha ukukrala kunye nokususwa kokukhathala, ukuphucula umlinganiselo wokususwa kwe-thermochemical, kunye nokunciphisa uburhabaxa bomhlaba. Uburhabaxa bomphezulu bokusila okomileyo buphantsi, kodwa ngokulula ngenxa yobushushu obuphezulu bokucwangcisa, ukutshisa isixhobo sobuso,
Inkqubo yokusila iblade ifuna ukuhoya: ① khetha iparameters zenkqubo yokusila iblade, inokwenza umphetho womlomo ulunge ngakumbi, umphezulu wangaphambili nasemva weblade ugqibezele phezulu. Nangona kunjalo, qwalasela amandla aphezulu okusila, ilahleko enkulu, ukusebenza okuphantsi kokugaya, ixabiso eliphezulu; ② khetha umgangatho ofanelekileyo wevili lokusila, kuquka uhlobo lwe-binder, ubungakanani besuntswana, i-concentration, i-binder, isondo lokusila, kunye neemeko zokusila ezinomileyo nezimanzi, unokwandisa isixhobo sangaphambili kunye nekona yangasemva, ixabiso le-knife tip passivation kunye nezinye iiparameters, ngelixa uphucula umgangatho wesixhobo.
Ivili lokusila elahlukileyo ledayimani lineempawu ezahlukeneyo, kunye neendlela ezahlukeneyo zokusila kunye nesiphumo. Ivili lesanti ye-resin binder diamond lithambile, Amasuntswana okugaya kulula ukuwa kwangaphambi kwexesha, Ukungaxhathisi ubushushu, Umphezulu ukhubazeka lula bubushushu, Umphezulu wokusila iBlade uthande ukunxiba amanqaku, Uburhabaxa obukhulu; I-Metal binder diamond yokusila ivili igcinwa ibukhali ngokusila ukutyumza, ukubunjwa kakuhle, ukuvela, uburhabaxa obuphantsi be-blade yokusila, ukusebenza okuphezulu, nangona kunjalo, ukukwazi ukubopha amasuntswana okugaya kwenza ukuba i-self-lola ihlwempu, Kwaye i-edge yokusika kulula ukushiya i-gap yempembelelo, Ibangela umonakalo omkhulu we-marginal; Ivili lokusila ledayimane leceramic linamandla aphakathi, ukusebenza kakuhle kokuzivuselela, imingxuma engaphezulu yangaphakathi, iFavfor ukususwa kothuli kunye nokutshabalalisa ubushushu, Iyakwazi ukuziqhelanisa neentlobo ngeentlobo zokupholisa, Iqondo lobushushu eliphantsi lokusila, Ivili lokusila aligugi kakhulu, Ukugcinwa kwemilo elungileyo, ukuchaneka kowona mgangatho uphezulu, nangona kunjalo, umzimba wedayimani ukhokelela kwisixhobo sokugaya kunye nesixhobo sokugaya. Sebenzisa ngokwezinto zokucubungula, ukusebenza kakuhle kokugaya, ukuqina kwe-abrasive kunye nomgangatho womphezulu we-workpiece.
Uphando malunga nokusebenza kakuhle kokusila lugxile ikakhulu ekuphuculeni imveliso kunye nolawulo lweendleko. Ngokuqhelekileyo, umlinganiselo wokugaya u-Q (ukususwa kwe-PCD ngexesha leyunithi) kunye nomlinganiselo wokunxiba G (umlinganiselo wokususwa kwe-PCD ukuya ekulahlekeni kwevili lokusila) zisetyenziswa njengeenqobo zokuvavanya.
Umphengululi waseJamani u-KENTER esila isixhobo se-PCD ngoxinzelelo oluqhubekayo, uvavanyo: ① kwandisa isantya sevili lokusila, ubungakanani bamasuntswana ePDC kunye noxinzelelo lokupholisa, umlinganiselo wokusila kunye nomlinganiselo wokunxiba uyancitshiswa; ② kwandisa ubungakanani bamasuntswana okugaya, kwandisa uxinzelelo oluqhubekayo, kwandisa ukuxinwa kwedayimane kwivili lokusila, izinga lokusila kunye nokunyuka komlinganiselo wokunxiba; ③ uhlobo lokubopha luhlukile, izinga lokusila kunye nomlinganiselo wokunxiba lahlukile. I-KENTER Inkqubo yokugaya i-blade yesixhobo se-PCD yafundwa ngokucwangcisiweyo, kodwa impembelelo yenkqubo yokugaya i-blade ayizange ihlalutywe ngokuchanekileyo.
3. Ukusetyenziswa kunye nokungaphumeleli kwezixhobo zokusika zePCD
(1) Ukukhethwa kweeparamitha zokusika isixhobo
Ngexesha lokuqala lesixhobo sePCD, umlomo obukhali obukhali wadlula kancinci, kwaye umgangatho womphezulu womatshini waba ngcono. I-Passivation inokususa ngokufanelekileyo i-gap encinci kunye ne-burrs encinci eziswa yi-blade yokusila, iphucule umgangatho wendawo yomgca wokusika, kwaye kwangaxeshanye, yenza i-radius edge ye-circular ukukhama kunye nokulungisa umphezulu ocutshungulweyo, ngaloo ndlela uphucula umgangatho wendawo yokusebenza.
Isixhobo se-PCD somphezulu wokugaya i-aluminiyam i-alloy, isantya sokusika siqhelekile kwi-4000m / min, ukusetyenzwa komngxuma ngokuqhelekileyo ku-800m / min, ukuqhutyelwa kwentsimbi ephezulu ye-elastic-plastic non-ferrous kufuneka ithathe isantya esiphezulu sokujika (300-1000m / min). Umthamo wesondlo ukhuthazwa ngokubanzi phakathi kwe-0.08-0.15mm / r. Umthamo wesondlo esikhulu kakhulu, ukunyuka kwamandla okusika, ukunyuka kwendawo yejometri eseleyo yendawo yokusebenza; umthamo omncinci wesondlo, ukunyuka kobushushu bokusika, kunye nokunyuka kokunxiba. Ubunzulu bokusika buyanda, amandla okusika ayanda, ubushushu bokusika buyanda, ubomi buyancipha, ubunzulu bokusika bunokubangela ukuba kube lula ukuwa kwe-blade; ubunzulu bokusika obuncinci buya kukhokelela kukuqina komatshini, ukunxiba kunye nokuwa kweblade.
(2) Nxiba ifom
Isixhobo sokusetyenzwa kwesixhobo, ngenxa yengxabano, ubushushu obuphezulu kunye nezinye izizathu, ukunxiba akunakuphepheka. Ukunxitywa kwesixhobo sedayimani siquka izigaba ezithathu: isigaba sokuqala sokunxiba ngokukhawuleza (esikwabizwa ngokuba sisigaba sotshintsho), isigaba sokunxiba esizinzile esinesantya sokunxiba esingaguqukiyo, kunye nesigaba sokunxiba esikhawulezileyo esilandelayo. Isigaba sokugqoka ngokukhawuleza sibonisa ukuba isixhobo asisebenzi kwaye sidinga ukuguqulwa kwakhona. Iindlela zokunxiba zezixhobo zokusika ziquka ukuncamathelisa (ukunxiba kwe-welding ebandayo), ukunxitywa kwe-diffusion, ukunxitywa kwe-abrasive, ukunxiba kwe-oxidation, njl.
Ngokwahlukileyo kwizixhobo zemveli, indlela yokunxiba yezixhobo zePCD kukunxiba okuncamathelayo, ukunxitywa kwe-diffusion kunye nomonakalo we-polycrystalline layer. Phakathi kwabo, umonakalo we-polycrystal layer sesona sizathu siphambili, esibonakaliswa njengokuwa kwe-blade efihlakeleyo okubangelwa yimpembelelo yangaphandle okanye ukulahlekelwa kwe-adhesive kwi-PDC, okwenza umsantsa, ongowomonakalo womzimba womzimba, onokukhokelela ekunciphiseni ukuchaneka kokucubungula kunye ne-scrap of workpieces. Ubungakanani bamasuntswana e-PCD, ifom ye-blade, i-Angle ye-blade, izinto zokusebenza kunye neeparitha zokucubungula ziya kuchaphazela amandla e-blade blade kunye namandla okusika, kwaye emva koko kubangele umonakalo we-polycrystal layer. Kwinkqubo yobunjineli, ubungakanani obufanelekileyo bezinto eziluhlaza, iiparitha zesixhobo kunye neeparitha zokucubungula kufuneka zikhethwe ngokwemiqathango yokucubungula.
4. Umkhwa wophuhliso lwezixhobo zokusika zePCD
Okwangoku, uluhlu lwesicelo se-PCD isixhobo sandisiwe ukusuka ekuguqukeni kwendabuko ukuya ekubhobhozeni, ukugaya, ukusika ngesantya esiphezulu, kwaye isetyenziswe ngokubanzi ekhaya nakwamanye amazwe. Uphuhliso olukhawulezayo lwezithuthi zombane alukhange luzise impembelelo kwishishini leemoto zemveli kuphela, kodwa luzise imiceli mngeni engazange ibonwe ngaphambili kwishishini lezixhobo, likhuthaza ishishini lezixhobo ukuba likhawulezise ukuphuculwa kunye nokuveliswa kwezinto ezintsha.
Ukusetyenziswa okubanzi kwezixhobo zokusika i-PCD kuye kwanda kwaye kwakhuthaza uphando kunye nophuhliso lwezixhobo zokusika. Ngokunzulu kophando, iinkcukacha zePDC ziya zincinci kwaye zincinci, ukulungiswa komgangatho wokucokisa ukutya okuziinkozo, ukufana kokusebenza, izinga lokusila kunye nomlinganiselo wokunxiba uphezulu nangaphezulu, ukumila kunye nokwahlukana kwesakhiwo. Imikhomba-ndlela yophando yezixhobo zePCD iquka: ① uphando kunye nokuphuhlisa umaleko obhityileyo wePCD; ② uphando kunye nokuphuhlisa izixhobo zePCD entsha; ③ uphando kwizixhobo ezingcono zePCD zokuwelda kunye nokunciphisa ngakumbi iindleko; ④ uphando luphucula inkqubo yokusila isixhobo sePCD ukuphucula ukusebenza kakuhle; ⑤ uphando lukhulisa iiparamitha zesixhobo sePCD kwaye lusebenzise izixhobo ngokweemeko zendawo; ⑥ uphando ngokufanelekileyo lukhetha iiparamitha zokusika ngokwemathiriyeli esetyenzisiweyo.
isishwankathelo esifutshane
(1) Isixhobo sokusika isixhobo sePCD, yenza ukunqongophala kwezixhobo ezininzi ze-carbide; ngelo xesha, ixabiso liphantsi kakhulu kunesixhobo sedayimane se-crystal enye, ekusikeni kwanamhlanje, sisixhobo esithembisayo;
(2) Ngokohlobo kunye nokusebenza kwezinto ezicutshungulwayo, ukhetho olufanelekileyo lobungakanani besuntswana kunye neeparamitha zezixhobo zePCD, eyona nto isisiseko sokwenza izixhobo kunye nokusetyenziswa,
(3) Izinto zePCD zinobunzima obuphezulu, eyona nto ifanelekileyo yokusika i-knife County, kodwa izisa ubunzima bokwenza izixhobo zokusika. Xa ukuveliswa, ukuqwalasela ngokubanzi ubunzima benkqubo kunye neemfuno zokucubungula, ukuze kuphunyezwe ukusebenza kweendleko eziphezulu;
(4) PCD processing izinto kwisiphaluka imela, kufuneka ngokufanelekileyo ukhethe parameters ukusika, ngesiseko ukuhlangabezana ukusebenza imveliso, kangangoko kunokwenzeka ukwandisa ubomi benkonzo isixhobo ukuze kuzuzwe ulungelelwano ubomi isixhobo, ukusebenza kakuhle imveliso kunye nomgangatho imveliso;
(5) Phanda kwaye uphuhlise izixhobo zePCD ezintsha ukoyisa imiqobo yayo
Eli nqaku lithathwe kwi "inethiwekhi superhard impahla"
Ixesha lokuposa: Mar-25-2025
