Isixhobo se-PCD senziwe ngencam yedayimani ye-polycrystalline kunye ne-carbide matrix ngokusebenzisa ubushushu obuphezulu kunye nokusila koxinzelelo oluphezulu. Asinakunika kuphela ukusebenza okupheleleyo kwiingenelo zobulukhuni obuphezulu, ukuqhuba okuphezulu kobushushu, i-coefficient ephantsi yokungqubana, i-coefficient ephantsi yokwandiswa kobushushu, i-affinity encinci nesinyithi kunye ne-non-metal, i-modulus ephezulu ye-elastic, umphezulu ongaqhekekiyo, i-isotropic, kodwa ikwaqwalasela amandla aphezulu e-alloy eqinileyo.
Uzinzo lobushushu, ukuqina kwempembelelo kunye nokumelana nokuguguleka zezona zibonakaliso ziphambili zokusebenza kwe-PCD. Ngenxa yokuba isetyenziswa kakhulu kwiindawo ezinobushushu obuphezulu kunye noxinzelelo oluphezulu, uzinzo lobushushu yeyona nto ibalulekileyo. Olu phononongo lubonisa ukuba uzinzo lobushushu lwe-PCD lunempembelelo enkulu ekuxhathiseni kwayo ukuguguleka kunye nokuqina kwempembelelo. Idatha ibonisa ukuba xa ubushushu buphezulu kune-750℃, ukumelana nokuguguleka kunye nokuqina kwempembelelo ye-PCD ngokubanzi kwehla nge-5% -10%.
Imeko yekristale yePCD imisela iipropati zayo. Kwisakhiwo se-microstructure, ii-athomu zekhabhoni zenza ii-covalent bonds ezinee-athomu ezine ezikufutshane, zifumana isakhiwo se-tetrahedral, zize zenze i-atomic crystal, enegunya eliqinileyo kunye namandla okubopha, kunye nobunzima obuphezulu. Izalathisi zokusebenza eziphambili zePCD zezi zilandelayo: ① ubunzima bunokufikelela kwi-8000 HV, amaxesha angama-8-12 e-carbide; ② ukuhanjiswa kobushushu yi-700W / mK, amaxesha ayi-1.5-9, nangaphezulu kune-PCBN kunye nobhedu; ③ i-friction coefficient ngokubanzi yi-0.1-0.3 kuphela, ngaphantsi kakhulu kwe-0.4-1 ye-carbide, okunciphisa kakhulu amandla okusika; ④ i-thermal expansion coefficient yi-0.9x10-6-1.18x10-6,1 / 5 ye-carbide kuphela, enokunciphisa ukuguquguquka kobushushu kwaye iphucule ukuchaneka kokucubungula; ⑤ kwaye izinto ezingezizo zesinyithi azinamdla kangako ekwenzeni amaqhuqhuva.
I-cubic boron nitride inokumelana okukhulu kwe-oxidation kwaye inokucubungula izinto ezine-iron, kodwa ubunzima buphantsi kune-single crystal diamond, isantya sokucubungula sicotha kwaye ukusebenza kakuhle kuphantsi. I-single crystal diamond inobunzima obukhulu, kodwa ubunzima bayo abwanelanga. I-Anisotropy yenza kube lula ukwahlukana kumphezulu (111) phantsi kwempembelelo yamandla angaphandle, kwaye ukusebenza kakuhle kokucubungula kulinganiselwe. I-PCD yi-polymer eyenziwe ngamasuntswana edayimani anobukhulu be-micron ngeendlela ezithile. Ubunzima bokuqokelelana kwamasuntswana adibeneyo bukhokelela kwindalo yayo ye-macroscopic isotropic, kwaye akukho mphezulu wecala kunye noqhekeko kumandla okutsalwa. Xa kuthelekiswa ne-single-crystal diamond, umda weenkozo ze-PCD unciphisa ngempumelelo i-anisotropy kwaye uphucula iimpawu zoomatshini.
1. Imigaqo yoyilo lwezixhobo zokusika ze-PCD
(1) Ukukhetha okufanelekileyo kobukhulu bamasuntswana e-PCD
Ngokwethiyori, i-PCD kufuneka izame ukucokisa iinkozo, kwaye ukusasazwa kwezongezo phakathi kweemveliso kufuneka kufane kangangoko ukuze koyiswe i-anisotropy. Ukukhetha ubungakanani be-PCD particle kukwanxulumene neemeko zokucubungula. Ngokubanzi, i-PCD enamandla aphezulu, ubulukhuni obuhle, ukumelana nempembelelo entle kunye ne-fine grain ingasetyenziselwa ukugqiba okanye ukugqiba kakhulu, kwaye i-PCD yeenkozo ezirhabaxa ingasetyenziselwa umatshini wokuchwetheza oqhelekileyo. Ubungakanani be-PCD particle bunokuchaphazela kakhulu ukusebenza kokuguguleka kwesixhobo. Uncwadi olufanelekileyo lubonisa ukuba xa i-grain material inkulu, ukumelana nokuguguleka kuyanda kancinci ngokuhla kobukhulu be-grain, kodwa xa i-grain grain incinci kakhulu, lo mthetho awusebenzi.
Uvavanyo oluhambelanayo lukhethe umgubo wedayimani ezine ezinobukhulu obuphakathi be-10um, 5um, 2um kunye ne-1um, kwaye kwagqitywa kwelokuba: ① Ngokuhla kobukhulu be-particle yezinto ezikrwada, i-Co isasazeka ngokulinganayo; ngokuncipha kwe-②, ukumelana nokuguguleka kunye nokumelana nobushushu kwe-PCD kwehla kancinci kancinci.
(2) Ukukhetha ngokufanelekileyo uhlobo lomlomo weblade kunye nobukhulu beblade
Uhlobo lomlomo weblade luquka ikakhulu izakhiwo ezine: umphetho oguqulweyo, isangqa esicacileyo, umphetho oguqulweyo isangqa esidibeneyo kunye ne-engile ebukhali. Isakhiwo esibukhali se-angular senza umphetho ube bukhali, isantya sokusika sikhawuleza, sinokunciphisa kakhulu amandla okusika kunye ne-burr, siphucule umgangatho womphezulu wemveliso, sifaneleke ngakumbi kwi-aluminium alloy ephantsi ye-silicon kunye nobunye ubunzima obuphantsi, ukugqitywa kwesinyithi esingena-ferrous efanayo. Isakhiwo esijikelezileyo esicacileyo sinokususa umlomo weblade, senze i-R Angle, sithintele ngokufanelekileyo ukuqhekeka kweblade, sifaneleke ukucutshungulwa kwe-aluminium alloy ephakathi / ephezulu ye-silicon. Kwezinye iimeko ezikhethekileyo, ezinje ngobunzulu bokusika obungaphantsi kunye nokutya okuncinci kwemela, isakhiwo esijikelezileyo esicacileyo siyathandwa. Isakhiwo somphetho oguqulweyo sinokunyusa imiphetho kunye neekona, sizinzise iblade, kodwa kwangaxeshanye siya kwandisa uxinzelelo kunye nokumelana nokusika, sifaneleke ngakumbi kwi-aluminium alloy ephezulu ye-silicon esinzima.
Ukuze kube lula i-EDM, ngokuqhelekileyo khetha umaleko obhityileyo wephepha le-PDC (0.3-1.0mm), kunye nomaleko we-carbide, ubukhulu besixhobo bumalunga ne-28mm. Umaleko we-carbide akufuneki ube mkhulu kakhulu ukuze kuthintelwe ukuqhekeka okubangelwa ngumahluko woxinzelelo phakathi kwemiphezulu yokubopha.
2, inkqubo yokuvelisa izixhobo ze-PCD
Inkqubo yokuvelisa isixhobo se-PCD imisela ngokuthe ngqo ukusebenza kokusika kunye nobomi benkonzo yesixhobo, nto leyo engundoqo ekusetyenzisweni nasekuphuhlisweni kwaso. Inkqubo yokuvelisa isixhobo se-PCD iboniswe kuMfanekiso 5.
(1) Ukwenziwa kweetablethi zePCD ezidityanisiweyo (PDC)
① Inkqubo yokuvelisa yePDC
I-PDC ngokubanzi yenziwe ngomgubo wedayimani wendalo okanye owenziweyo kunye nearhente yokubopha kubushushu obuphezulu (1000-2000℃) kunye noxinzelelo oluphezulu (5-10 atm). Iarhente yokubopha yenza ibhulorho yokubopha eneTiC, Sic, Fe, Co, Ni, njl. njengezinto eziphambili, kwaye ikristale yedayimani ifakwe kwisakhelo sebhulorho yokubopha ngendlela yebhondi ye-covalent. I-PDC ngokubanzi yenziwa ngeediski ezinobubanzi obuzinzileyo kunye nobukhulu, kunye nokugaya kunye nokupholishwa kunye nezinye iindlela zonyango zomzimba nezekhemikhali ezihambelanayo. Ngokwenyani, uhlobo olufanelekileyo lwe-PDC kufuneka lugcine iimpawu zomzimba ezilungileyo zedayimani yekristale enye kangangoko kunokwenzeka, ke ngoko, izongezo emzimbeni we-sintering kufuneka zibe ncinci kangangoko kunokwenzeka, kwangaxeshanye, indibaniselwano yebhondi ye-DD yamasuntswana kangangoko kunokwenzeka,
② Ukwahlulahlula kunye nokukhethwa kwezinto zokubopha
I-binder yeyona nto ibalulekileyo echaphazela ukuzinza kobushushu besixhobo se-PCD, nto leyo echaphazela ngokuthe ngqo ubulukhuni baso, ukumelana nokuguguleka kunye nokuzinza kobushushu. Iindlela eziqhelekileyo zokubopha ze-PCD zezi: isinyithi, i-cobalt, i-nickel kunye nezinye iintsimbi zotshintsho. I-Co kunye ne-W powder ezixutyiweyo zasetyenziswa njenge-arhente yokubopha, kwaye ukusebenza okubanzi kwe-PCD yokutshisa kwakulungile xa uxinzelelo lwe-synthesis lwaluyi-5.5 GPa, ubushushu bokutshisa babuyi-1450℃ kunye ne-insulation imizuzu eyi-4. I-SiC, i-TiC, i-WC, i-TiB2, kunye nezinye izinto ze-ceramic. I-SiC Ukuzinza kobushushu be-SiC kungcono kunokwe-Co, kodwa ubunzima kunye nokuqina kokuqhekeka kuphantsi kakhulu. Ukunciphisa ngokufanelekileyo ubungakanani bezinto ezikrwada kunokuphucula ubulukhuni kunye nokuqina kwe-PCD. Akukho glue, ene-graphite okanye eminye imithombo yekhabhoni kubushushu obuphezulu kakhulu kunye noxinzelelo oluphezulu olutshiswe kwidayimani ye-polymer ye-nanoscale (NPD). Ukusebenzisa i-graphite njengesandulela sokulungiselela i-NPD yeyona meko inzima kakhulu, kodwa i-NPD yokwenziwa inobunzima obuphezulu kunye neempawu ezilungileyo zoomatshini.
Ukukhethwa nokulawulwa kweenkozo ezi-③
Umgubo wedayimani wezinto eziluhlaza yinto ephambili echaphazela ukusebenza kwe-PCD. Ukunyanga i-micropowder yedayimani kwangaphambili, ukongeza inani elincinci lezinto ezithintela ukukhula kwamasuntswana edayimani angaqhelekanga kunye nokukhetha ngokufanelekileyo izongezo zokusila kunokuthintela ukukhula kwamasuntswana edayimani angaqhelekanga.
I-NPD ecocekileyo kakhulu enesakhiwo esifanayo ingayisusa ngempumelelo i-anisotropy kwaye iphucule ngakumbi iimpawu zoomatshini. Umgubo we-nanographite precursor olungiselelwe ngendlela yokugaya ibhola enamandla aphezulu wasetyenziswa ukulawula umxholo we-oksijini kubushushu obuphezulu ngaphambi kokusinta, uguqula i-graphite ibe yidayimani phantsi kwe-18 GPa kunye ne-2100-2300℃, ivelisa i-lamella kunye ne-granular NPD, kwaye ubunzima banda ngokuncipha kobukhulu be-lamella.
④ Unyango lwekhemikhali oluye lwafika emva kwexesha
Kubushushu obufanayo (200 ° ℃) kunye nexesha (20h), isiphumo sokususa i-cobalt seLewis acid-FeCl3 besingcono kakhulu kunesamanzi, kwaye umlinganiselo ofanelekileyo we-HCl yayiyi-10-15g / 100ml. Uzinzo lobushushu be-PCD luyaphucuka njengoko ubunzulu bokususa i-cobalt bukhula. Kwi-PCD ekhula ngokurhabaxa, unyango lwe-asidi enamandla lunokususa ngokupheleleyo i-Co, kodwa lunempembelelo enkulu ekusebenzeni kwe-polymer; ukongeza i-TiC kunye ne-WC ukutshintsha isakhiwo se-polycrystal esidibeneyo kunye nokudibanisa nonyango lwe-asidi enamandla ukuphucula uzinzo lwe-PCD. Okwangoku, inkqubo yokulungiselela izixhobo ze-PCD iyaphucuka, ukuqina kwemveliso kulungile, i-anisotropy iphuculwe kakhulu, ifumene imveliso yorhwebo, amashishini anxulumene nayo ayaphuhla ngokukhawuleza.
(2) Ukucutshungulwa kweblade ye-PCD
① inkqubo yokusika
I-PCD inobunzima obuphezulu, ukumelana nokuguguleka kakuhle kunye nenkqubo yokusika enzima kakhulu.
② inkqubo yokuwelda
I-PDC kunye nomzimba wemela nge-mechanical clamp, bonding kunye ne-brazing. I-Brazing isetyenziselwa ukucinezela i-PDC kwi-carbide matrix, kubandakanya i-vacuum brazing, i-vacuum diffusion welding, i-high frequency induction heating brazing, i-laser welding, njl. I-high frequency induction heating brazing inexabiso eliphantsi kunye nembuyekezo ephezulu, kwaye isetyenziswa kakhulu. Umgangatho we-welding unxulumene ne-flux, i-welding alloy kunye nobushushu be-welding. Ubushushu be-welding (ngokuvamile buphantsi kwe-700 ° ℃) bunempembelelo enkulu, ubushushu buphezulu kakhulu, kulula ukubangela i-PCD graphitization, okanye "ukutsha kakhulu", okuchaphazela ngokuthe ngqo isiphumo se-welding, kwaye ubushushu obuphantsi kakhulu buya kukhokelela ekubeni amandla e-welding anganelanga. Ubushushu be-welding bungalawulwa lixesha le-insulation kunye nobunzulu bobomvu be-PCD.
③ inkqubo yokusila iiblade
Inkqubo yokusila izixhobo ze-PCD yeyona nto iphambili kwinkqubo yokuvelisa. Ngokubanzi, ixabiso eliphezulu leblade kunye neblade lingaphakathi kwe-5um, kwaye i-arc radius ingaphakathi kwe-4um; umphezulu wokusika wangaphambili nowangasemva uqinisekisa ukugqitywa komphezulu othile, kwaye unciphisa nomphezulu wokusika wangaphambili weRa ukuya kwi-0.01 μm ukuhlangabezana neemfuno zesibuko, wenze iitships zihambe kumphezulu wemela wangaphambili kwaye uthintele ukunamathela kwemela.
Inkqubo yokugaya iiblade ibandakanya ivili lokugaya idayimani, i-electric 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 lokugaya idayimani yeyona sele ivuthiwe, kwaye yeyona isetyenziswa kakhulu.
Uvavanyo oluhambelanayo: 1. Ivili lokusila leenxalenye ezirhabaxa liya kukhokelela ekuweni okukhulu kweblade, kwaye ubungakanani benxalenye yevili lokusila buyehla, kwaye umgangatho weblade uba ngcono; ubungakanani benxalenye yevili lokusila bunxulumene kakhulu nomgangatho weblade wezixhobo ze-PCD ezincinci okanye ezithambileyo, kodwa zinefuthe elilinganiselweyo kwizixhobo ze-PCD zenxalenye ezirhabaxa.
Uphando olunxulumene nalo ekhaya nakwamanye amazwe lugxile kakhulu kwindlela yokusebenza kunye nenkqubo yokusila iiblade. Kwindlela yokusila iiblade, ukususwa kwe-thermochemical kunye nokususwa koomatshini zezona zinto ziphambili, kwaye ukususwa kwe-brittle kunye nokususwa kokudinwa kuncinci. Xa kusilwa, ngokwemandla kunye nokumelana nobushushu kwamavili okugaya edayimani ahlukeneyo e-binding agent, phucula isantya kunye nokuphindaphinda kwevili lokusila kangangoko kunokwenzeka, kuphephe ukubhitya kunye nokususwa kokudinwa, phucula umlinganiselo wokususwa kwe-thermochemical, kwaye unciphise ukubhitya komphezulu. Ukubhitya komphezulu wokusila owomileyo kuphantsi, kodwa ngokulula ngenxa yobushushu obuphezulu bokucubungula, tshisa umphezulu wesixhobo,
Inkqubo yokusila iiblade kufuneka inike ingqalelo kwezi zinto zilandelayo: ① khetha iiparameter zenkqubo yokusila iiblade ezifanelekileyo, zingenza umgangatho womlomo osemaphethelweni ube ngcono ngakumbi, ukugqitywa komphezulu weblade ngaphambili nangasemva kube phezulu. Nangona kunjalo, qwalasela amandla aphezulu okusila, ilahleko enkulu, ukusebenza kakuhle kokusila okuphantsi, iindleko eziphezulu; ② khetha umgangatho wevili lokusila ofanelekileyo, kubandakanya uhlobo lwe-binder, ubungakanani besuntswana, uxinaniso, i-binder, i-grinding wheel dressing, kunye neemeko ezifanelekileyo zokusila iiblade ezomileyo nezimanzi, zingenza ngcono ikona yangaphambili nangasemva yesixhobo, ixabiso lokudlula kwincam yemela kunye nezinye iiparameter, ngelixa ziphucula umgangatho womphezulu wesixhobo.
Ivili lokusila ledayimani elibophayo lineempawu ezahlukeneyo, kunye nendlela yokusila eyahlukileyo kunye nesiphumo. Ivili lesanti ledayimani elibophayo le-resin lithambile, Amasuntswana okusila kulula ukuwa ngaphambi kwexesha, Awanakumelana nobushushu, Umphezulu uguqulwa lula bubushushu, Umphezulu wokusila weblade uthambekele ekugugeni, Uburhabaxa obukhulu; Ivili lokusila ledayimani elibophayo lesinyithi ligcinwa libukhali ngokusila, Ukwakheka okuhle, umphezulu, Uburhabaxa bomphezulu obuphantsi bokusila kweblade, Ukusebenza okuphezulu, Nangona kunjalo, amandla okusila amasuntswana enza ukuzilola kube nzima, kwaye umda wokusika kulula ukushiya umsantsa wempembelelo, Ubangela umonakalo omkhulu; Ivili lokusila ledayimani elibophayo le-ceramic linamandla aphakathi, Ukusebenza okuhle kokuzivuselela, Iimbobo ezingaphezulu zangaphakathi, Ithanda ukususwa kothuli kunye nokutshatyalaliswa kobushushu, Ingaqhelana neentlobo ngeentlobo ze-coolant, Ubushushu obuphantsi bokusila, Ivili lokusila aligugi kangako, Ukugcinwa kakuhle kwemilo, Ukuchaneka kokusebenza okuphezulu, Nangona kunjalo, umzimba wokusila wedayimani kunye ne-binder ukhokelela ekwakhiweni kwemingxunya kumphezulu wesixhobo. Sebenzisa ngokwezixhobo zokucubungula, ukusebenza kakuhle kokusila, ukuqina okurhabaxa kunye nomgangatho womphezulu wesixhobo somsebenzi.
Uphando malunga nokusebenza kakuhle kokugaya lugxile kakhulu ekuphuculeni imveliso kunye neendleko zokulawula. Ngokubanzi, izinga lokugaya Q (ukususwa kwe-PCD ngexesha ngalinye) kunye nomlinganiselo wokuguguleka G (umlinganiselo wokususwa kwe-PCD ukuya ekulahlekelweni kwevili lokugaya) zisetyenziswa njengeekhrayitheriya zovavanyo.
Isixhobo se-PCD somphengululi waseJamani i-KENTER esinoxinzelelo oluqhubekayo, uvavanyo: ① sonyusa isantya sevili lokusila, ubungakanani besuntswana le-PDC kunye noxinzelelo lwe-coolant, izinga lokusila kunye nomlinganiselo wokuguguleka ziyancitshiswa; ② sonyusa ubungakanani besuntswana lokusila, sonyusa uxinzelelo oluqhubekayo, sonyusa uxinzelelo lwedayimani kwivili lokusila, izinga lokusila kunye nomlinganiselo wokuguguleka ziyanda; ③ uhlobo lwe-binder lwahlukile, izinga lokusila kunye nomlinganiselo wokuguguleka zahlukile. I-KENTER Inkqubo yokusila iibhleyidi zesixhobo se-PCD ifundwe ngendlela ecwangcisiweyo, kodwa impembelelo yenkqubo yokusila iibhleyidi ayizange ihlalutywe ngendlela ecwangcisiweyo.
3. Ukusetyenziswa kunye nokungaphumeleli kwezixhobo zokusika ze-PCD
(1) Ukukhethwa kweeparamitha zokusika izixhobo
Ngexesha lokuqala kwesixhobo se-PCD, umlomo obukhali wawutyhafa kancinci kancinci, kwaye umgangatho womphezulu womatshini waba ngcono. Ukudlulisa amandla kunokususa ngempumelelo isithuba esincinci kunye neebharrs ezincinci eziziswa kukugaywa kweblade, kuphucule umgangatho womphezulu wokusika, kwaye kwangaxeshanye, kwenze i-radius yomphetho ojikelezayo ukuze kucinezelwe kwaye kulungiswe umphezulu ocutshungulweyo, ngaloo ndlela kuphuculwe umgangatho womphezulu womsebenzi.
I-aluminium alloy yesixhobo se-PCD, isantya sokusika sihlala sikwi-4000m / min, ukucutshungulwa kwemingxunya ngokuqhelekileyo kukwi-800m / min, ukucutshungulwa kwesinyithi esingena-ferrous esine-elastic ephezulu kufuneka kuthathe isantya esiphezulu sokujika (300-1000m / min). Umthamo wokutya ucetyiswa ngokubanzi phakathi kwe-0.08-0.15mm / r. Umthamo omkhulu wokutya, amandla okusika anyukileyo, indawo eseleyo yejometri yomphezulu womsebenzi; umthamo omncinci wokutya, ubushushu bokusika obunyukileyo, kunye nokuguguleka okwandileyo. Ubunzulu bokusika buyanda, amandla okusika ayanda, ubushushu bokusika buyanda, ubomi buyancipha, ubunzulu bokusika obugqithisileyo bunokubangela ukuguguleka kweblade ngokulula; ubunzulu bokusika obuncinci buya kukhokelela ekuqineni komatshini, ukuguguleka kunye nokuwa kweblade ngokulinganayo.
(2) Ifomu yokunxiba
Isicubu sokusebenza sokulungisa izixhobo, ngenxa yokungqubana, ubushushu obuphezulu kunye nezinye izizathu, ukuguguleka akunakuphepheka. Ukuguguleka kwesixhobo sedayimani kuqulathe amanqanaba amathathu: isigaba sokuqala sokuguguleka ngokukhawuleza (esaziwa ngokuba sisigaba sotshintsho), isigaba sokuguguleka esizinzileyo esinesantya sokuguguleka esingaguqukiyo, kunye nesigaba esilandelayo sokuguguleka ngokukhawuleza. Isigaba sokuguguleka ngokukhawuleza sibonisa ukuba isixhobo asisebenzi kwaye sifuna ukuphinda sigaywe. Iindlela zokuguguleka zezixhobo zokusika ziquka ukuguguleka okunamathelayo (ukuguguleka kokuwelda okubandayo), ukuguguleka kokusasazwa, ukuguguleka okurhabaxa, ukuguguleka kwe-oxidation, njl.
Ngokungafaniyo nezixhobo zemveli, uhlobo lokuguguleka kwezixhobo ze-PCD kukuguguleka kwe-adhesive, ukuguguleka kokusasazwa kunye nomonakalo we-polycrystalline layer. Phakathi kwazo, umonakalo we-polycrystal layer yeyona nto iphambili, ebonakaliswa njengokuwa kwe-blade okuncinci okubangelwa yimpembelelo yangaphandle okanye ukulahleka kwe-adhesive kwi-PDC, okwenza umsantsa, ongowomonakalo woomatshini, onokukhokelela ekunciphiseni ukuchaneka kokucubungula kunye neziqwenga zezinto zokusebenza. Ubungakanani be-PCD particle, imo ye-blade, i-blade Angle, izinto zokusebenza kunye neeparamitha zokucubungula ziya kuchaphazela amandla e-blade blade kunye namandla okusika, kwaye emva koko zibangele umonakalo we-polycrystal layer. Kwindlela yobunjineli, ubungakanani be-particle yezinto eziluhlaza ezifanelekileyo, iiparamitha zezixhobo kunye neeparamitha zokucubungula kufuneka zikhethwe ngokweemeko zokucubungula.
4. Uphuhliso lwezixhobo zokusika ze-PCD
Okwangoku, uluhlu lokusetyenziswa kwezixhobo ze-PCD lwandisiwe ukusuka ekuguquleni kwendabuko ukuya ekubholeni, ekugayeni, ekusikeni ngesantya esiphezulu, kwaye lusetyenziswa kakhulu ekhaya nakwamanye amazwe. Uphuhliso olukhawulezileyo lwezithuthi zombane aluzange luzise nje kuphela impembelelo kushishino lweemoto zendabuko, kodwa lukwazise nemingeni engazange ibonwe ngaphambili kushishino lwezixhobo, lukhuthaza ishishini lezixhobo ukuba likhawulezise ukwenziwa ngcono kunye nobuchule.
Ukusetyenziswa ngokubanzi kwezixhobo zokusika ze-PCD kuye kwanda kwaye kwakhuthaza uphando nophuhliso lwezixhobo zokusika. Ngokukhula kophando, iinkcukacha ze-PDC ziya zisiba ncinci, ukuphuculwa komgangatho wokucoca iinkozo, ukufana kokusebenza, izinga lokusila kunye nomlinganiselo wokuguguleka liphezulu kakhulu, ukwahlukahluka kwemilo kunye nesakhiwo. Imiyalelo yophando lwezixhobo ze-PCD ibandakanya: ① uphando kunye nokuphuhlisa umaleko omncinci we-PCD; ② uphando kunye nokuphuhlisa izixhobo ezintsha zesixhobo se-PCD; ③ uphando lwezixhobo ze-PCD zokuwelda ezingcono kunye nokunciphisa iindleko ngakumbi; ④ uphando luphucula inkqubo yokusila iiblade zesixhobo se-PCD ukuphucula ukusebenza kakuhle; ⑤ uphando luphucula iiparameter zesixhobo se-PCD kwaye lusebenzisa izixhobo ngokweemeko zasekuhlaleni; ⑥ uphando lukhetha ngokwengqiqo iiparameter zokusika ngokwezixhobo ezicutshungulwayo.
isishwankathelo esifutshane
(1) Ukusebenza kokusika izixhobo ze-PCD, kuvala ukunqongophala kwezixhobo ezininzi ze-carbide; kwangaxeshanye, ixabiso liphantsi kakhulu kunesixhobo se-single crystal diamond, ekusikeni kwanamhlanje, sisixhobo esithembisayo;
(2) Ngokwehlobo kunye nokusebenza kwezinto ezicutshungulwayo, ukhetho olufanelekileyo lobungakanani beesuntswana kunye neeparamitha zezixhobo ze-PCD, oluyisiseko sokwenziwa nokusetyenziswa kwezixhobo,
(3) Izinto ze-PCD zinobunzima obuphezulu, nto leyo efanelekileyo xa kunqunyulwa iimela, kodwa ikwabangela ubunzima xa kunqunyulwa izixhobo. Xa kusenziwa, kufuneka kuqwalaselwe ngokupheleleyo ubunzima benkqubo kunye neemfuno zokucubungula, ukuze kufezekiswe ukusebenza kweendleko ezilungileyo;
(4) Izixhobo zokucubungula i-PCD kwindawo yokusika, kufuneka sikhethe ngokufanelekileyo iiparameter zokusika, ngokusekelwe ekuhlangabezaneni nokusebenza kwemveliso, kangangoko kunokwenzeka ukwandisa ubomi benkonzo yesixhobo ukuze kufezekiswe ulungelelwaniso lobomi besixhobo, ukusebenza kakuhle kwemveliso kunye nomgangatho wemveliso;
(5) Phanda kwaye uphuhlise izixhobo ezintsha zePCD ukuze woyise iingxaki zayo ezisisiseko
Eli nqaku livela kwi "inethiwekhi yezinto eziqinileyo"
Ixesha leposi: Matshi-25-2025
