PDC KAPENA PCD DRILL BT? KODI KUSINTHAKO NDI KODI?
PDC drill bit imatanthauza Polycrystalline Diamond Cutter core bit
Zitsime zoyambirira zinali zitsime zamadzi, maenje osaya omwe ankakumbidwa ndi manja m'madera omwe madzi ankafika pamwamba, nthawi zambiri okhala ndi makoma a miyala kapena matabwa.
Ma PDC amapangidwa pophatikiza zigawo zina za diamondi za polycrystalline (PCD) ndi wosanjikiza wa carbide liner yolimba pa kutentha kwakukulu komanso kuthamanga kwambiri.
Ma PDC ndi ena mwa zida zomangira kwambiri za diamondi.
PCD imangotanthauza Polycrystalline Diamond: PCD nthawi zambiri imapangidwa pochotsa makristasi ambiri a diamondi imodzi pa kutentha kwakukulu komanso kuthamanga kwambiri. PCD imakhala ndi kulimba kwabwino kwa kusweka komanso kukhazikika kwa kutentha, ndipo imagwiritsidwa ntchito popanga zobowola za geological.
PDC ili ndi ubwino woti diamondi imalephera kuwononga zinthu chifukwa cha kulimba kwa carbide.
Timapereka ma PDC drill bits opangidwa ndi mitundu yosiyanasiyana ya ma cutters kapena polycrystalline diamond compacts (PDC) opangidwa ndi braced pa thupi.
Zodulira za PDC zimapangidwa kuchokera ku carbide substrate ndi diamond grit. Kutentha kwambiri kwa madigiri pafupifupi 2800 ndi kuthamanga kwamphamvu kwa pafupifupi 1,000,000 psi kumapanga compact. Palinso cobalt alloy ndipo imagwira ntchito ngati chothandizira pa njira yoyeretsera. Cobalt imathandiza kumangirira carbide ndi diamondi.
Kawirikawiri, zodulira zazikulu (19mm mpaka 25mm) zimakhala zamphamvu kwambiri kuposa zodulira zazing'ono. Komabe, zimatha kuonjezera kusinthasintha kwa mphamvu.
Zodulira zazing'ono (8mm, 10mm, 13mm ndi 16mm) zawonetsedwa kuti zimabowola pa ROP yapamwamba kuposa zodulira zazikulu m'magwiritsidwe ena. Mwachitsanzo, chimodzi mwa izi ndi miyala yamchere.
Kuphatikiza apo, odulira ang'onoang'ono amapanga zidutswa zazing'ono pomwe odulira akuluakulu amapanga zidutswa zazikulu. Zodulira zazikulu zingayambitse mavuto pakuyeretsa mabowo ngati madzi obowola sangathe kunyamula zodulirazo mmwamba.
(1) kapena (2) Yofewa komanso yofewa yomata - Yoboola bwino kwambiri monga dongo, marl, gumbo ndi mchenga wosakhazikika.
(3) Zofewa-zapakati-Zochepa mphamvu yopondereza mchenga, shale ndi anhydrite zokhala ndi zigawo zolimba zosakanikirana.
(4) Mchenga, choko, anhydrite ndi shale, womwe ndi wamphamvu komanso woponderezedwa pang'ono.
(6) Yolimba pakati - Yolimba kwambiri yokhala ndi mchenga, shale, laimu ndi anhydrite, yopanda kapena yocheperako.
(7) Mphamvu yolimba kwambiri yokhala ndi mchenga wakuthwa kapena miyala ya silika.
(8) Mapangidwe olimba kwambiri komanso akuthwa monga quartzite ndi miyala ya volcano.
Kapangidwe ka PDC DULANI
Ma pdc bits ofewa kwambiri (1) mpaka apakatikati (4) ali ndi kukula kwakukulu kwa chodulira cha PDC. Kapangidwe ka chodulira cha PDC kamadziwika motere:
2 - chidutswa ichi chili ndi zodulira za 19mm zambiri
3 - chidutswa ichi chili ndi zodulira za 13 mm zambiri
4 - chidutswa ichi chili ndi zodulira za 8 mm zambiri
Zidutswa za PDC
Nthawi yotumizira: Ogasiti-31-2022