Koj paub ntau npaum li cas txog PDC cutter?

Hais txog PDC (Polycrystalline Pob Zeb Diamond Compact) Cutter

PDC (Polycrystalline Pob Zeb Diamond Compact) Cutter yog ib hom superhardcov khoom uas compacts polycrystalline pob zeb diamond nrog tungsten carbide substrate ntawm ultra-siab kub thiab siab.

Lub invention ntawm PDC cutter propelled lubtsau-cutter me ntsismus rau qhov ua ntej hauv kev lag luam drilling, thiab lub tswv yim tam sim ntawd tau nrov. Txij li thaumtxiavKev txiav txim ntawm PDC cutters yog qhov zoo dua li qhov kev txiav txim ntawm lub pob los yog toothed ntsis, tsau cutters- me ntsisyog nyob rau hauv siab thov.

Xyoo 1982, PDC laum cov khoom suav tsuas yog 2% ntawm tag nrho cov ko taw tho. Nyob rau hauv 2010, 65% ntawm tag nrho cov drilled cheeb tsam yog tsim los ntawm PDC.

Yuav ua li cas PDC Cutters raug tsim? 

PDC Cutters yog tsim los ntawm tungsten carbide substrate thiab hluavtaws pob zeb diamond grit. Nws yog tsim los ntawm kev sib xyaw ua ke ntawm qhov kub thiab txias siab nrog cov catalyst ntawm cobalt alloy los pab nyiaj pob zeb diamond thiab carbide thaum lub sij hawm sintering. Thaum lub caij txias, tungsten carbide shrinks ntawm tus nqi ntawm 2.5 npaug sai dua lub pob zeb diamond, uas sib txuas pob zeb diamond thiab tungsten Carbide ua ke thiab tom qab ntawd tsim PDC Cutter.

Cov yam ntxwv thiab kev siv

Txij li PDC Cutters muaj cov pob zeb diamond grit thiab tungsten carbide substrate, nws muab cov txiaj ntsig zoo ntawm pob zeb diamond thiab tungsten carbide.： 

1. High puas resistant

2. High cuam tshuam resistant

3. High thermal ruaj khov

Tam sim no PDC Cutters tau siv dav rau cov roj av drilling, roj thiab geological tshawb nrhiav, thee mining, thiab ntau lwm yam kev siv drilling thiab milling, cuab yeej xws li PDC Laum Bits, xws li Steel PDC Laum Khoom & Matrix PDC Laum Khoom rau roj drilling thiab Tri-cone PDC Drill Bits rau thee mining.

Kev txwv

Kev puas tsuaj, kev puas tsuaj thaum tshav kub kub, thiab hnav tsis zoo txhua yam cuam tshuam kev xyaum me ntsis kev ua tau zoo thiab tuaj yeem tshwm sim txawm tias qhov softest geological formations. Txawm li cas los xij, qhov nyuaj tshaj plaws tsim rau PDC me ntsis rau kev xyaum yog cov abrasive heev.

Loj VS me cutter

Raws li txoj cai dav dav, cov cutters loj (19mm txog 25mm) yog nruj dua li cov cutters me. Txawm li cas los xij, lawv tuaj yeem ua rau muaj kev hloov pauv torque. Tsis tas li ntawd, yog tias BHA tsis tau tsim los tswj kev ua phem ntau ntxiv, kev tsis ruaj khov yuav tshwm sim.

Cov cutters me me (8mm, 10mm, 13mm, thiab 16mm) tau pom tias laum ntawm ROP siab dua li cov cutters loj hauv qee yam kev siv. Ib qho kev thov no yog limestone.
Tsis tas li ntawd, cov khoom siv tau tsim nrog cov cutters me me tab sis ntau ntawm lawv tuaj yeem tiv taus qhov cuam tshuam ntau dua thauj khoom. 

Tsis tas li ntawd, cov txiav me me tsim cov txiav me me thaum cov cutters loj tsim cov txiav loj. Cov cuttings loj tuaj yeem ua rau muaj teeb meem nrog kev tu lub qhov yog tias cov kua dej drilling tsis tuaj yeem nqa cov txiav mus rau lub annulus.

cutter puab

PDC zoo tshaj plaws yog lub tog raj kheej, ib feem vim hais tias cylindrical cutters tau yooj yim teem nyob rau hauv qhov txwv ntawm ib tug me ntsis profile kom ua tiav loj cutter ntom. Cov tshuab hluav taws xob xaim hluav taws xob tuaj yeem txiav thiab tsim PDC pob zeb diamond ntxhuav. Lub nonplanar interface nruab nrab ntawm lub pob zeb diamond rooj thiab substrate txo cov residual stresses. Cov nta no txhim kho kev tiv thaiv rau chipping, spalling, thiab pob zeb diamond rooj delamination. Lwm qhov kev sib txuas tsim ua kom muaj kev cuam tshuam loj heev los ntawm kev txo qis qhov seem ntawm kev ntxhov siab.