ʻO ka wili PDC a i ʻole PCD? He aha ka ʻokoʻa?
ʻO ka ʻāpana wili PDC ʻo ia hoʻi ka ʻāpana kumu o ka Polycrystalline Diamond Cutter
ʻO nā luawai mua loa, he mau lua wai ia, nā lua pāpaʻu i ʻeli ʻia e ka lima ma nā wahi i hoʻokokoke aku ai ka papa wai i ka ʻili, ʻo ka maʻamau me nā paia pōhaku a lāʻau paha e hoʻopuni ana i ka ʻili.
Hana ʻia nā PDC ma ka hoʻohui ʻana i kekahi mau papa o nā daimana polycrystalline (PCD) me kahi papa o ka liner carbide cemented ma ke kiʻekiʻe o ka mahana a me ke kaomi kiʻekiʻe.
ʻO nā PDC kekahi o nā mea hana daimana paʻa loa.
ʻO PCD ke ʻano maʻalahi o Polycrystalline Diamond: Hana ʻia nā PCD ma ka sintering ʻana i nā kristal daimana hoʻokahi liʻiliʻi he nui ma ke ana wela kiʻekiʻe a me ke kaomi kiʻekiʻe. Loaʻa i ka PCD ka paʻakikī haki maikaʻi a me ke kūpaʻa wela maikaʻi, a hoʻohana ʻia i ka hana ʻana i nā ʻāpana wili geological.
Loaʻa iā PDC nā pono o ke kūpaʻa kiʻekiʻe o ka daimana me ka paʻakikī maikaʻi o ka carbide.
Hāʻawi mākou i nā ʻāpana wili PDC i hana ʻia me nā ʻano mea ʻokiʻoki like ʻole a i ʻole nā polycrystalline diamond compacts (PDC) i hoʻopaʻa ʻia ma ke kino.
Hana ʻia nā mea ʻoki PDC mai ka substrate carbide a me ka grit daimana. ʻO ka wela kiʻekiʻe ma kahi o 2800 degere a me ke kaomi kiʻekiʻe ma kahi o 1,000,000 psi e hoʻokumu i ka compact. Aia pū kekahi cobalt alloy a hana ma ke ʻano he catalyst i ke kaʻina hana sintering. Kōkua ka cobalt i ka hoʻopaʻa ʻana i ka carbide a me ke daimana.
Ma ke ʻano he kānāwai maʻamau, ʻoi aku ka ikaika o nā mea ʻoki nui (19mm a 25mm) ma mua o nā mea ʻoki liʻiliʻi. Eia nō naʻe, hiki iā lākou ke hoʻonui i nā loli o ka torque.
Ua hōʻike ʻia nā mea ʻoki liʻiliʻi (8mm, 10mm, 13mm a me 16mm) e wili ma ROP kiʻekiʻe aʻe ma mua o nā mea ʻoki nui i kekahi mau noi. ʻO kekahi o ia noi he pōhaku lepo no ka laʻana.
Eia kekahi, hana nā mea ʻoki liʻiliʻi i nā ʻoki liʻiliʻi aʻo nā mea ʻoki nui e hana i nā ʻoki nui. Hiki i nā ʻoki nui ke hoʻopilikia i ka hoʻomaʻemaʻe ʻana i nā lua inā ʻaʻole hiki i ka wai wili ke hāpai i nā ʻoki i luna.
(1) a i ʻole (2) Palupalu a palupalu hoʻi nā ʻano hana pipili-ʻO nā ʻano hana hiki ke wili ʻia e like me ka lepo, ka marl, ka gumbo a me nā one i hoʻopaʻa ʻole ʻia.
(3) Nā one ikaika compressive palupalu-waena-haʻahaʻa, shale a me nā anhydrites me nā papa paʻakikī i hui pū ʻia.
(4) Ke one ikaika compressive waena-waena, ka chalk, ka anhydrite a me ka shale.
(6) Paʻakikī waena-ʻOi aku ka ikaika compressive me ke one ʻoi ʻole a hapa paha, shale, lime a me ka anhydrite.
(7) Paʻakikī-Ka ikaika compressive kiʻekiʻe me nā papa ʻoi o ke one a i ʻole ka siltstone.
(8) Paʻakikī loa - Nā ʻano ʻoi a mānoanoa e like me ka quartzite a me ka pōhaku pele.
ʻO ke kūkulu ʻoki ʻana o PDC
ʻO nā ʻāpana pdc palupalu loa (1) a waena (4) he hoʻokahi nui o ka mea ʻoki PDC. Ua hōʻike ʻia ke ʻano ʻoki PDC ma ke ʻano penei:
2 - he 19mm ka nui o nā mea ʻoki o kēia ʻāpana
3 - he 13 mm ka nui o nā mea ʻoki o kēia ʻāpana
4 - he 8 mm ka nui o nā mea ʻoki o kēia ʻāpana
Nā ʻāpana PDC
Ka manawa hoʻouna: ʻAukake-31-2022