PDC

Background

Polycrystalline ya diyama (PDC) yakoreshejwe mubikorwa byinganda, harimo no gucukura amabuye no gukoresha ibyuma. Amasezerano nkaya yerekanye ibyiza kurenza ubundi bwoko bwo gukata ibintu, nko kurwanya kwambara neza no kurwanya ingaruka. PDC irashobora gushirwaho mugucumura ibice bya diyama kugiti cye hamwe numuvuduko mwinshi hamwe nubushyuhe bwo hejuru (HPHT), imbere ya catalizator / solvent iteza imbere guhuza diyama na diyama. Ingero zimwe za catalizator / ibishishwa bya diyama yacumuye ni cobalt, nikel, ibyuma, nibindi byuma bya VIII. Ubusanzwe PDCs ifite diyama irenga mirongo irindwi ku ijana mubunini, hafi mirongo inani ku ijana kugeza kuri mirongo cyenda n'umunani ku ijana. PDC ihujwe na substrate, bityo ikora PDC ikata, isanzwe yinjizwa imbere, cyangwa igashyirwa kuri, igikoresho cyo kumanura nka bito bito cyangwa reamer.

PDC

Imashini ya PDC ikorwa na tungsten karbide substrate hamwe nifu ya diyama munsi yubushyuhe bwinshi numuvuduko mwinshi. Cobalt ni binder. Inzira yo kumashanyarazi ikuraho imiti ya cobalt ikubiyemo imiterere ya polycristaline. Igisubizo ni ameza ya diyama hamwe no kunanirwa no kwangirika kwubushyuhe no kwambara nabi, bikavamo ubuzima bwigihe kirekire. Ubu buryo busanzwe burangira mumasaha arenga 10 munsi ya dogere 500 kugeza 600 na feri ya vacuum. Intego yo kumeneka ni ukongera ubukana bwa PDC. Mubisanzwe gusa umurima wamavuta PDC ikoresha ubu buhanga, kuberako ibidukikije bikora mumirima ya peteroli biragoye.

Muri makeAmateka

Mu myaka ya za 1980, Isosiyete GE (USA) hamwe na Sosiyete Sumitomo (Ubuyapani) bize ubushakashatsi bwo kuvana cobalt hejuru y amenyo ya PDC kugirango banoze imikorere y amenyo. Ariko ntibageze ku ntsinzi yubucuruzi. Ikoranabuhanga nyuma ryongeye gutezwa imbere kandi rihabwa patenti na Hycalog（Amerika）. Byaragaragaye ko niba ibikoresho byicyuma bishobora kuvanwa mu cyuho cy’ingano, ituze ry’ubushyuhe bw’amenyo ya PDC rizanozwa cyane ku buryo biti ishobora gucukura neza mu buryo bukomeye kandi butera ubwoba. Ubu buryo bwo kuvanaho cobalt butezimbere kwambara amenyo ya PDC muburyo bukomeye bwangiza kandi bikagura intera ikoreshwa ya bits ya PDC.