Yintoni iPDC bit Cutter?

Idayimani yeyona nto inzima eyaziwayo. Obu bunzima bunika iipropati eziphezulu zokusika nayiphi na enye into. I-PDC(i-Polycrystalline diamond compact) ibaluleke kakhulu ekugrunjweni kuba idibanisa iidayimani ezincinci, ezingabizi kakhulu, ezenziwe ngabantu zibe nkulu, intlaninge yeekristale ezilungelelaniswe ngokungacwangciswanga ezinokubunjwa zibe ziimo eziluncedo ezibizwa ngokuba ziitafile zedayimani. Iitafile zedayimani ziyinxalenye yomsiki onxibelelana nokwakheka. Ngaphandle kobunzima bazo, iitafile zedayimani zePDC zineempawu eziyimfuneko zokusika i-drill-bit: Zidibanisa ngokufanelekileyo kunye nemathiriyeli ye-tungsten ye-carbide enokuthi ifakwe ibrazed (incanyathiselwe) kwi-bit body. Iidayimani, ngokwazo, aziyi kudibana kunye, kwaye azinakuqhotyoshelwa ngokubrawuza.

Idayimani yokwenziwa

Igrit yedayimani iqhele ukusetyenziselwa ukuchaza iinkozo ezincinci (≈0.00004 in.) zedayimani yokwenziwa esetyenziswa njengesixhobo esiphambili ekrwada kubasiki bePDC. Ngokwemichiza kunye neempawu, idayimani eyenziwe ngumntu iyafana nedayimane yendalo. Ukwenza igrit yedayimane kubandakanya inkqubo elula yekhemikhali: ikhabhoni eqhelekileyo ifudunyezwa phantsi koxinzelelo oluphezulu kakhulu kunye nobushushu. Enyanisweni, ukwenza idayimani akulula.

Iikristale zedayimani zomntu ngamnye eziqulethwe kwigrit yedayimani zijongwe ngeendlela ezahlukeneyo. Oku kwenza izinto zomelele, zibukhali, kwaye, ngenxa yokuqina kwedayimane equlethweyo, iyakwazi ukumelana nokunxiba. Ngapha koko, ulwakhiwo olungenamkhethe olufumaneka kwiidayimani zokwenziwa ezibotshiweyo zisebenza ngcono ekuchebeni kunedayimani zendalo, kuba idayimani zendalo ziikhyubhiki zeekristale eziqhekeka ngokulula ecaleni kocwangco, imida yekristale.

I-Diamond grit ayizinzile kangako kumaqondo obushushu aphezulu kunedayimane zendalo, nangona kunjalo. Ngenxa yokuba i-metallic catalyst ebanjelwe kulwakhiwo lwegrit inezinga eliphezulu lokwandiswa kwe-thermal kunedayimani, ukwandiswa kokwahluka kubeka iibhondi zedayimane ukuya kwidayimane phantsi kwe-chear kwaye, ukuba imithwalo iphezulu ngokwaneleyo, ibangela ukusilela. Ukuba iibhondi ziyasilela, iidayimani zikhawuleza zilahleke, ngoko ke iPDC ilahlekelwa bubulukhuni nobubukhali bayo kwaye ingasebenzi. Ukuthintela ukusilela okunjalo, abasiki bePDC kufuneka bapholiswe ngokwaneleyo ngexesha lokomba.

Iitafile zedayimani

Ukwenza itafile yedayimani, igrit yedayimane igalelwa ngetungsten carbide kunye nentsimbi yesibophelelo ukwenza umaleko otyebileyo wedayimani. Zinobume obufana ne-wafer, kwaye kufuneka zenziwe zibe ngqindilili kangangoko kunokwenzeka ngenxa yokuba umthamo wedayimani wonyusa ubomi bokunxiba. Iitafile zedayimani ezikumgangatho ophezulu ≈2 ukuya kwi-4 mm, kwaye inkqubela phambili yobuchwepheshe iya kwandisa ubukhulu betafile yedayimani. I-Tungsten carbide substrates ziqhelekile ≈0.5 in. ukuphakama kwaye zinemilo enqamlezileyo efanayo kunye nemilinganiselo njengetafile yedayimane. Amacandelo amabini, itafile yedayimane, kunye ne-substrate, yenza umsiki

Ukwakhiwa komsiki wePDC.

Ukwenza i-PDC ibe yimilo eluncedo kubasiki kubandakanya ukubeka igrit yedayimane, kunye ne-substrate yayo, kwinqanawa yoxinzelelo kwaye emva koko i-sintering kubushushu obuphezulu kunye noxinzelelo.

Abasiki bePDC abanakuvunyelwa ukuba bagqithe kwiqondo lobushushu eliyi-1,382°F [750°C]. Ubushushu obugqithisileyo buvelisa ukuguga okukhawulezayo ngenxa yokuba ukwandiswa kobushushu phakathi kwe-binder kunye nedayimani kudla ngokuqhekeza iikristale zegrit yedayimani ezikhulayo kwitafile yedayimani. Amandla ebhondi phakathi kwetafile yedayimane kunye ne-tungsten carbide substrate nazo zisengozini ngokwandiswa kwe-thermal.

Ukuba unomdla kwiimveliso ze-tungsten carbide kwaye ufuna ulwazi oluthe kratya kunye neenkcukacha, ungaQHAGAMSHELANA NATHI ngefowuni okanye ngeposi ekhohlo, okanye SITHUMELE MAIL emazantsi ephepha.