BITSIN DRILL NA PDC KO PCD? MENENE BAMBANCIN?
Ma'aunin aikin haƙa ramin PDC yana nufin ma'aunin kayan yanka dutse na Polycrystalline Diamond
Rijiyoyin farko sune rijiyoyin ruwa, ramuka marasa zurfi da aka haƙa da hannu a yankunan da ruwan ke kusantar saman, yawanci ana yin amfani da tubalan gini ko bangon katako a saman.
Ana yin PDC ta hanyar haɗa wasu layukan lu'u-lu'u masu siffar polycrystalline (PCD) da wani Layer na simintin siminti a yanayin zafi mai yawa da matsin lamba mai yawa.
PDCs suna cikin mafi tsauri daga cikin kayan aikin lu'u-lu'u.
PCD kawai yana nufin Polycrystalline Diamond: Ana yin PCD ta hanyar tace lu'ulu'u masu girman ƙananan girma a yanayin zafi mai yawa da matsin lamba mai yawa. PCD yana da ƙarfi mai kyau na karyewa da kwanciyar hankali mai kyau, kuma ana amfani da shi wajen yin guntun haƙa ƙasa.
PDC tana da fa'idodin juriyar lu'u-lu'u mai ƙarfi tare da kyakkyawan ƙarfin carbide.
Muna samar da na'urorin haƙa rami na PDC da aka yi da nau'ikan masu yanke siffa ko kuma polycrystalline diamond compacts (PDC) da aka yi wa ado a jiki.
Ana yin masu yanke PDC ne daga sinadarin carbide da kuma dutsen lu'u-lu'u. Zafi mai zafi kusan digiri 2800 da kuma matsin lamba mai yawa na kusan psi 1,000,000. Haka nan akwai wani ƙarfe mai kama da cobalt kuma yana aiki a matsayin mai kara kuzari ga tsarin sintering. Cobalt yana taimakawa wajen haɗa carbide da lu'u-lu'u.
A matsayinka na gabaɗaya, manyan masu yankewa (19mm zuwa 25mm) sun fi ƙarfin ƙarfi fiye da ƙananan masu yankewa. Duk da haka, suna iya ƙara yawan canjin ƙarfin juyi.
An nuna cewa ƙananan na'urorin yankewa (8mm, 10mm, 13mm da 16mm) suna haƙa rami mai girman ROP fiye da manyan na'urorin yankewa a wasu aikace-aikace. Ɗaya daga cikin irin wannan aikace-aikacen shine dutse mai daraja misali.
Bugu da ƙari, ƙananan masu yankewa suna samar da ƙananan yanka yayin da manyan masu yankewa ke samar da manyan yanka. Manyan yankewa na iya haifar da matsala wajen tsaftace ramuka idan ruwan haƙa ba zai iya ɗaukar yankewa ba.
(1) ko (2) Mai laushi da laushi mai mannewa - Tsarin da ake iya haƙawa sosai kamar yumbu, marl, gumbo da yashi mara haɗin kai.
(3) Mai laushi-matsakaici-Ƙarfin matsewa mai ƙarancin ƙarfi, yashi, shale da anhydrites tare da yadudduka masu tauri a haɗe.
(4) Matsakaici-Matsakaicin ƙarfin matsewa, yashi, alli, anhydrite da shale.
(6) Matsakaici mai tauri- Ƙarfin matsewa mai ƙarfi tare da yashi mara kaifi ko rabin-kaifi, shale, lemun tsami da anhydrite.
(7) Ƙarfin matsewa mai ƙarfi tare da yashi mai kaifi ko dutsen silt.
(8) Ƙungiyoyi masu tauri sosai - Ƙungiyoyi masu kaifi da ƙarfi kamar su quartzite da dutsen aman wuta.
Tsarin Yankewa na PDC
Nau'in tsari mai laushi sosai (1) zuwa matsakaici (4) ragowa na pdc suna da girman babban mai yanka PDC. Tsarin yanke PDC ana nuna shi ta wannan hanyar:
2 - wannan bit ɗin yana da mafi yawan masu yankewa na 19mm
3 - wannan bit ɗin yana da mafi yawan masu yankewa na mm 13
4 - wannan bit ɗin yana da mafi yawan masu yankewa na mm 8
Ƙananan PDC
Lokacin Saƙo: Agusta-31-2022