Kusintha kwa odulira a PDC

Mu dziko la kuboola, kusintha kwa makina odulira a PDC (polycrystalline diamond compact) kwasintha kwambiri makampani opanga mafuta ndi gasi. Kwa zaka zambiri, makina odulira a PDC asintha kwambiri kapangidwe kake ndi magwiridwe antchito, zomwe zawonjezera magwiridwe antchito awo ndikuwonjezera nthawi yawo yogwira ntchito.

Poyamba, zodulira za PDC zinapangidwa kuti zikhale zokhazikika komanso zothandiza m'malo mwa zodulira zachikhalidwe za tungsten carbide. Zinayamba kugwiritsidwa ntchito m'zaka za m'ma 1970 ndipo zinatchuka mwachangu chifukwa cha kuthekera kwawo kupirira kutentha kwambiri ndi kupsinjika pakubowola mozama. Komabe, zodulira zoyambirira za PDC zinali zochepa chifukwa cha kufooka kwawo ndipo zinkatha kusweka mosavuta.

Pamene ukadaulo unkapita patsogolo, opanga anayamba kuyesa zipangizo zatsopano ndi mapangidwe kuti akonze magwiridwe antchito a odulira a PDC. Chimodzi mwa zinthu zofunika kwambiri chinali kuyambitsa odulira a polycrystalline diamond (TSP) omwe ali olimba kwambiri pa kutentha. Odulira awa anali ndi diamondi yolimba kwambiri ndipo amatha kupirira kutentha kwambiri komanso kupsinjika kuposa odulira a PDC achikhalidwe.

Chinthu china chachikulu chomwe chinathandiza kwambiri pa ukadaulo wa PDC cutter chinali kuyambitsa makina odulira osakanikirana. Makina odulira amenewa anaphatikiza kulimba kwa PDC ndi kulimba kwa tungsten carbide kuti apange chida chodulira chomwe chingathe kugwira ntchito ngakhale pa ntchito zovuta kwambiri zobowola.

M'zaka zaposachedwapa, kupita patsogolo kwa njira zopangira zinthu kwathandiza kuti pakhale ma geometri ovuta mu odulira a PDC. Izi zapangitsa kuti pakhale odulira apadera omwe amapangidwira ntchito zinazake zobowola, monga kubowola molunjika ndi kubowola mothamanga kwambiri/kutentha kwambiri.

Kusintha kwa makina odulira a PDC kwakhudza kwambiri makampani amafuta ndi gasi. Chifukwa cha kuthekera kwawo kupirira mikhalidwe yovuta kwambiri komanso kukhala nthawi yayitali kuposa zida zodulira zachikhalidwe, makina odulira a PDC awonjezera luso la kuboola komanso kuchepetsa nthawi yogwirira ntchito. Pamene ukadaulo woboola ukupitilira kupita patsogolo, ndizotheka kuti tiwona kupita patsogolo kwina mu kapangidwe ndi magwiridwe antchito a makina odulira a PDC.

Pomaliza, odulira a PDC apita patsogolo kwambiri kuyambira pomwe adayambitsidwa m'zaka za m'ma 1970. Kuyambira masiku awo oyambirira monga njira yolimba m'malo mwa tungsten carbide inserts, mpaka pakupanga odulira apadera omwe adapangidwira ntchito zinazake zobowola, kusintha kwa odulira a PDC kwakhala kodabwitsa. Pamene makampani amafuta ndi gasi akupitilizabe kusintha, odulira a PDC mosakayikira adzakhala ndi gawo lofunikira pakuyendetsa bwino ntchito zobowola.