Kodi mungasankhe bwanji zodulira za PDC zoyenera?

Kapangidwe ka PDC drill Bits ka masiku ano monga matrix sikufanana kwenikweni ndi ka zaka zingapo zapitazo. Mphamvu zokoka ndi kukana kugwedezeka kwawonjezeka ndi osachepera 33%, ndipo mphamvu ya ma cutter brazes yawonjezeka ndi ≈80%. Nthawi yomweyo, ma geometries ndi ukadaulo wa zomangamanga zothandizira zakula, zomwe zapangitsa kuti pakhale zinthu zolimba komanso zopindulitsa za matrix.
Zipangizo Zodulira
Zodulira za PDC zimapangidwa kuchokera ku carbide substrate ndi diamond grit. Kutentha kwakukulu kwa madigiri pafupifupi 2800 ndi kuthamanga kwakukulu kwa pafupifupi 1,000,000 psi kumapanga compact. Cobalt alloy imagwiranso ntchito ngati chothandizira pa ntchito yochotsa zinthu zonyansa. Cobalt imathandiza kumangirira carbide ndi diamondi.
Chiwerengero cha Odulira
Nthawi zambiri timagwiritsa ntchito zodulira zochepa pa zidutswa zofewa za PDC chifukwa chodulira chilichonse chimachotsa kuzama kwakukulu kwa kudula. Kuti zikhale zolimba, ndikofunikira kugwiritsa ntchito zodulira zambiri kuti zigwirizane ndi kuzama kochepa kwa kudula.

PDC Drill Bits - Kukula kwa Zodulira
Pa mapangidwe ofewa, nthawi zambiri timasankha zodulira zazikulu kuposa mapangidwe olimba. Kawirikawiri, kukula koyenera kumakhala kuyambira 8 mm mpaka 19 mm pa chidutswa chilichonse.

Kawirikawiri timafotokoza momwe kapangidwe ka chodulira chimayendera pogwiritsa ntchito ma rack akumbuyo ndi ma angle a rack akumbali.
●Kalavani yodulira kumbuyo ndi ngodya yomwe imaperekedwa ndi nkhope ya wodulirayo mpaka kupangika kwake ndipo imayesedwa kuchokera pa choyima. Makona a kalavani kumbuyo amasiyana pakati, nthawi zambiri, 15° mpaka 45°. Siwokhazikika kudutsa bit, kapena kuchokera pa bit kupita pa bit. Kukula kwa ngodya ya kalavani yodulira ya PDC drill bits kumakhudza Penetration Rate (ROP) ndi kukana kwa chodulira kutayika. Pamene ngodya ya kalavani ikukwera, ROP imachepa, koma kukana kwa kutayika kumawonjezeka pamene katundu wogwiritsidwa ntchito tsopano wafalikira pamalo akuluakulu. Odulira a PDC okhala ndi kalavani kakang'ono kumbuyo amatenga kuzama kwakukulu kwa kudula ndipo motero amakhala amphamvu kwambiri, amapanga Torque yayikulu, ndipo amatha kuwonongeka mwachangu komanso chiopsezo chachikulu cha kuwonongeka.

●Kalavani yodulira mbali ndi muyeso wofanana ndi momwe choduliracho chimayendera kuchokera kumanzere kupita kumanja. Makona a mbali ya kalavani nthawi zambiri amakhala ang'onoang'ono. Ngodya ya mbali ya kalavani imathandiza kuyeretsa mabowo mwa kuwongolera zidutswazo kupita ku annulus.