Nā ʻano like ʻole o nā mea ʻoki PDC

He hana koʻikoʻi ka ʻeli ʻana ma ka ʻoihana ʻaila a me ka ʻea. Hoʻohana pinepine ʻia nā bits PDC (i kapa ʻia ʻo Polycrystalline Diamond Compact bit) i ka hana wili. ʻO ka bit PDC kahi ʻano bit i loaʻa nā mea ʻoki Polycrystalline Diamond (PCD) i hoʻopili ʻia i ke kino bit a ʻoki ʻia i loko o nā pōhaku ma ka hana ʻako ʻana ma waena o nā mea ʻoki a me ka pōhaku.

ʻO ka ʻoki ʻoki PDC he ʻāpana koʻikoʻi o kahi drill bit, a he mea hana hoʻi o ka wili. ʻO nā ʻano like ʻole o ka ʻokiʻoki PDC ke manaʻo nei e hoʻokō i nā kūlana hana like ʻole. He mea koʻikoʻi ke koho ʻana i ke ʻano kūpono, hiki ke hoʻomaikaʻi i kāu hana pono a hoʻemi i ke kumukūʻai wili.

ʻO ka maʻamau, puʻunaue mākou i ka ʻoki PDC e like me lalo:

1． Nā mea ʻoki palahalaha PDC

2． PDC pihi

Hoʻohana nui ʻia nā mea ʻoki palahalaha PDC no ka ʻeli ʻana i nā ʻāpana i ka mining a me nā māla ʻaila. Hiki ke hoʻohana ʻia i loko o ka bit diamond core bit a me PDC bearing.

ʻO nā pono nui no nā mea ʻoki PDC:

• kiʻekiʻe kiʻekiʻe (haʻahaʻa porosity)

• High compositional & structural homogeneity

• Keʻaʻahu kiʻekiʻe a me ka hopena hopena

• Paʻa wela kiʻekiʻe

• Loaʻa nā hana holoʻokoʻa maikaʻi loa ma ka mākeke

PDC flat cutter anawaena mai 8 a 19mm::

ʻO nā kikoʻī i luna no nā mea hoʻohana e koho mai. I ka manawa like, hiki ke hana ʻia nā ʻano kikoʻī like ʻole o nā huahana e like me nā koi o nā mea hoʻohana.

Ma ke ʻano 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 ka torque fluctuations.

ʻO nā mea ʻoki liʻiliʻi (8mm, 10mm, 13mm a me 16mm) ua hōʻike ʻia e wili i kahi kiʻekiʻe o ke komo ʻana (ROP) ma mua o nā mea ʻoki nui i kekahi mau noi. ʻO kekahi o ia noi ʻana he pōhaku limestone no ka laʻana. Hoʻolālā ʻia nā bits me nā mea ʻoki liʻiliʻi akā hiki i ka nui o lākou ke kū i ka hoʻouka ʻana i ka hopena kiʻekiʻe.

Hoʻohui ʻia, hana nā mea ʻoki liʻiliʻi i nā ʻoki liʻiliʻi a ʻo nā mea ʻoki nui e hana i nā ʻokiʻoki nui aʻe. Hiki i nā ʻokiʻoki nui ke hoʻopilikia i ka hoʻomaʻemaʻe ʻana o ka lua inā ʻaʻole hiki i ka wai wili ke lawe i nā ʻokiʻoki.

Piha PDC

Hoʻohana ʻia ka bearing PDC ma ke ʻano he antifriction bearing no downhole motor, ka mea i hoʻohana nui ʻia i nā ʻoihana lawelawe ʻaila a me nā hale kaʻa lalo-hole. Loaʻa nā ʻano like ʻole o ka bearing PDC me ka PDC radial bearing, PDC thrust bearing.

Paʻa loa nā bearings PDC i ka ʻaʻahu. Ke hoʻohālikelike ʻia me ka tungsten carbide a i ʻole nā ​​​​mea paʻa paʻa ʻē aʻe, ʻo ke ola o nā bearings daimana he 4 a 10 mau manawa lōʻihi, a hiki iā lākou ke hana i nā wela kiʻekiʻe (ʻo ka mahana kiʻekiʻe loa ʻo 233 ° C). Hiki i ka ʻōnaehana halihali PDC ke hoʻopaʻa i ka ukana nui no ka manawa lōʻihi, a ʻo ka haʻahaʻa haʻahaʻa haʻahaʻa i ka hui ʻana e hoʻonui i ka mana mechanical transmitted.

Hoʻohana nui ʻia nā pihi PDC no DTH drill bit, cone bit, a me daimana koho.

Hoʻohana nui ʻia nā koho daimana no nā mīkini mining, e like me nā pahu miner mau, Longwall shearer drums, tunnel boring machines (shield machine foundation, rotary drilling rig, tunneling, trenching machine drums, a pēlā aku)

Aia nā pihi PDC:

(1) PDC domed pihi: hoʻohana nui ʻia no ka DTH drill bit.

(2) Nā pihi conical PDC: hoʻohana nui ʻia no ka bit cone.

(3) PDC parabolic pihi: hoʻohana nui ʻia no ka ʻokiʻoki kōkua.

Ke hoʻohālikelike ʻia me nā pihi tungsten carbide, hiki i nā pihi PDC ke hoʻomaikaʻi i ke kūpaʻa abrasive ma mua o 10 mau manawa.

PDC domed pihi

ʻO nā mea ʻoki conical PDC

Nā pihi parabolic PDC

Ma waho aʻe o nā nui maʻamau, hiki iā mākou ke hana i kāu kiʻi.

Welina mai e ʻike i nā mea ʻoki PDC zzbetter, hana maikaʻi loa, maikaʻi kūlike, a me ka waiwai koʻikoʻi.