Thermally Yakagadzikana Polycrystalline Diamond Bit Cutter
Thermally Yakagadzikana Polycrystalline Diamond Bit Cutter
Thermally yakagadzikana yepolycrystalline diamond bit cutters yakaunzwa pazvakaonekwa kuti PDC bit cutters dzimwe nguva vaichekwa panguva yekuchera. Kukundikana uku kwakakonzerwa nekushushikana kwemukati kunokonzerwa nekusiyana kwekuwedzera kwedhaimondi uye binder zvinhu.
Cobalt ndiyo inonyanya kushandiswa binder mune sintered PCD zvigadzirwa. Nyaya iyi ine thermal coefficient yekuwedzera kwe 1.2 x 10 ^ -5 deg. C zvichienzaniswa ne2.7 x 10 ^-6 yedhaimondi. Naizvozvo cobalt inowedzera nekukurumidza kupfuura diamond. Sezvo kutonhora kwakawanda kwekucheka kunokwira pamusoro pe 730 deg C kushushikana kwemukati kunokonzerwa nemazinga akasiyana-siyana ekuwedzera kunotungamirira kukuputika kwakanyanya kwe intergranular, macro chipping, uye kukurumidza kukanganisa kwekucheka.
Tembiricha idzi dzakakwirisa kudarika tembiricha dzinowanikwa pasi pechibhorani (kazhinji 100 deg C pa8000 ft). Dzinomuka kubva mukukweshana kunokonzerwa nekuveura kunoita mabhiti aya achicheka dombo.
Ichi chipingamupinyi chekushisa che 730 deg C chakaratidza zvipingamupinyi zvakakomba pakuvandudza kushanda kwePCD cutter bits.
Vagadziri vakaedza nekuvandudza kugadzikana kwekupisa kwevacheki uye kugadzikana kwepolycrystalline diamond bits cutters kwakagadzirwa.
Aya mabits cutters akanyanya kugadzikana pakudziya kwepamusoro nekuti cobalt binder yakabviswa uye izvi zvinobvisa kushushikana kwemukati kunokonzerwa nekusiyana kwekuwedzera. Sezvo mazhinji ebhainda akabatana, kurapwa kwakawedzerwa nemaasidhi kunogona kuburitsa yakawanda yacho kunze. Izvo zvisungo pakati pepedyo madhaimani zvimedu hazvina kukanganiswa, zvichichengeta 50-80% yesimba rema compacts. Leached PCD ine thermally stable in inert kana kuderedza mhepo kusvika ku1200 deg C asi ichaderedza pa 875 deg C pamberi peokisijeni.
Izvo zvakaratidzwa kuti kana iyo cobalt zvinhu inogona kubviswa kubva pagomba rezviyo, kugadzikana kwekupisa kwemazino ePDC kuchavandudzwa zvakanyanya kuitira kuti bhiti rigone kudhiraivha zviri nani mune zvakaoma uye zvakanyanya abrasive formations. Iyi tekinoroji yekubvisa cobalt inosimudzira kusapfeka kwemeno ePDC mune abrasive akasimba edombo maumbirwo uye inowedzera kuwedzera huwandu hwekushandisa kwePDC bits.
Kuti uwane rumwe ruzivo nezve PDC cutters, unogamuchirwa kutishanyira pa www.zzbetter.com
