ʻO ka mālama cryogenic o ka mea ʻoki PDC

ʻO ka mea ʻokiʻoki PDC he mea hoʻohui me nā waiwai maikaʻi loa i loaʻa ma ka sintering daimana pauka me kahi substrate carbide cemented e hoʻohana ana i ka ʻenehana kiʻekiʻe a me ke kiʻekiʻe kiʻekiʻe (HTHP).

ʻO ka mea ʻoki PDC he conductivity thermal nui, ka paʻakikī ultra-kiʻekiʻe, a me ke kūpaʻa ʻana, a me ka ikaika kiʻekiʻe, ka paʻakikī o ka hopena kiʻekiʻe, a maʻalahi ke weld.

Kākoʻo ʻia ka papa daimana polycrystalline e ka substrate carbide cemented, hiki ke hoʻopaʻa i ka hoʻouka ʻana i ka hopena nui a pale i ka pōʻino nui i ka wā o ka hana. No laila, ua hoʻohana nui ʻia ʻo PDC no ka hana ʻana i nā mea hana ʻoki, geological a me ka ʻaila a me nā ʻāpana luawai hau, a me nā mea paahana ʻē aʻe.

I loko o ke kahua ʻaila a me ke kinoea, ʻoi aku ma mua o 90% o ka nui o nā kiʻi wili i hoʻopau ʻia e nā bits PDC. Hoʻohana mau ʻia nā ʻāpana PDC no ka hoʻoheheʻe ʻana i ka pōhaku paʻakikī a palupalu. I ka wā e pili ana i ka wili hohonu, aia nō nā pilikia o ke ola pōkole a me ka ROP haʻahaʻa.

I ka hoʻokumu paʻakikī hohonu, paʻakikī loa nā kūlana hana o ka PDC drill bit. ʻO nā ʻano nui o ka hāʻule ʻana o ka ʻāpana hui pū ʻia nā macro-fractures e like me ka haʻihaʻi ʻana o nā niho a me ka ʻoki ʻana ma muli o ka hopena i hoʻokumu ʻia e ka drill bit e loaʻa ana i kahi haʻahaʻa hopena nui, a me ke kiʻekiʻe o ka lua o lalo e hoʻoulu ai i nā ʻāpana composite. ʻO ka hōʻemi ʻana i ka pale ʻana o ka lau e hoʻohana ai i ka wela wela o ka pepa hoʻohui PDC. ʻO ka hemahema o ka PDC composite sheet i ʻōlelo ʻia ma luna nei e hoʻopilikia nui i kona ola lawelawe a me ka pono o ka wili.

He aha ka lāʻau Cryogenic?

ʻO ka mālama cryogenic kahi hoʻonui o ka wela maʻamau. Hoʻohana ʻo ia i ka nitrogen wai a me nā mea hoʻoheheʻe ʻē aʻe ma ke ʻano he mea hoʻomaʻalili e hoʻomaʻalili i nā mea i kahi mahana ma lalo o ka mahana o ka lumi (-100~-196°C) e hoʻomaikaʻi i kā lākou hana.

Ua hōʻike ʻia nā haʻawina he nui i hiki i ka mālama cryogenic ke hoʻomaikaʻi nui i nā waiwai mechanical o ke kila, nā alumini alumini, a me nā mea ʻē aʻe. Ma hope o ka mālama ʻana i ka cryogenic, ʻike ʻia ka mea hoʻoikaika i ka ua i kēia mau mea. Hiki i ka lāʻau cryogenic ke hoʻomaikaʻi i ka ikaika flexural, ke kūpaʻa ʻana, a me ka ʻoki ʻana i ka hana o nā mea hana carbide cemented, i hui pū ʻia me ka hoʻomaikaʻi maikaʻi ʻana o ke ola. Ua hōʻike pū ʻia nā noiʻi pili e hiki i ka mālama cryogenic ke hoʻomaikaʻi i ka ikaika static compressive o nā ʻāpana daimana, ʻo ke kumu nui o ka hoʻonui ʻana i ka ikaika ʻo ka hoʻololi ʻana o ke koena o ke kaumaha.

Akā, hiki iā mākou ke hoʻomaikaʻi i ka hana o ka mea ʻoki PDC ma o ka mālama cryogenic? I kēia manawa, liʻiliʻi nā haʻawina kūpono.

ʻO ke ʻano o ka mālama ʻana i ka cryogenic

ʻO kahi ala mālama cryogenic no nā mea ʻoki PDC, ʻo nā hana:

(1) E kau i nā mea ʻoki PDC ma ka lumi wela i loko o kahi umu hoʻōla cryogenic;

(2) E ho'ā i ka umu ho'ōla cryogenic, e komo i loko o ka naikokene wai, a e hoʻohana i ka hoʻomalu wela e hoʻemi i ka mahana o ka umu lapaʻau cryogenic a hiki i -30 ℃ ma kahi o -3 ℃ / min; ke piʻi ka mahana -30 ℃, a laila e hoʻemi ia i -1 ℃ / min. E ho'ēmi i -120 ℃; ma hope o ka piʻi ʻana o ka mahana -120 ℃, e hoʻemi i ka mahana i -196 ℃ ma ka wikiwiki o -0.1 ℃ / min;

(3) E mālama iā ia no 24 mau hola ma kahi mahana o -196°C;

(4) A laila e hoʻonui i ka mahana i -120 ° C ma kahi o 0.1 ° C / min, a laila e hoʻohaʻahaʻa i -30 ° C ma kahi o 1 ° C / min, a ma hope e hoʻemi i ka mahana o ka lumi ma kahi uku. o 3°C/min;

(5) E hana hou i ka hana i luna i ʻelua manawa e hoʻopau i ka mālama cryogenic o nā mea ʻoki PDC.

Ua hoʻāʻo ʻia ka ʻoki ʻoki PDC i mālama ʻia me ka cryogenically a me ka mea ʻoki PDC i mālama ʻole ʻia no ka lākiō lole o ka huila wili. Ua hōʻike ʻia nā hopena hoʻāʻo he 3380000 a me 4800000 ka nui o ka lole. Ua hōʻike ʻia nā hopena hoʻāʻo ma hope o ka hoʻoluʻu hohonu ʻO ka lākiō ʻaʻahu o ka mea ʻoki PDC i mālama ʻia i ke anu ʻoi aku ka haʻahaʻa ma mua o ka mea ʻoki PDC me ka mālama ʻole cryogenic.

Eia kekahi, ua hoʻopaʻa ʻia nā palapala hoʻohui PDC cryogenically i mālama ʻia a hoʻomaʻamaʻa ʻole ʻia i ka matrix a wili ʻia no 200m ma ka ʻāpana like o nā luawai e pili ana me nā ʻāpana hoʻohālikelike like. Hoʻonui ʻia ka ROP hoʻoheheʻe mechanical o kahi drill bit e 27.8% me ka hoʻohana ʻana i ka PDC i mālama ʻia me ka cryogenically i hoʻohālikelike ʻia me ka mea hoʻohana ʻole i ka mea ʻoki PDC cryogenically mālama ʻia.

He aha kou manaʻo e pili ana i ka mālama cryogenic o PDC cutter? Welina mai e waiho iā mākou i kāu mau manaʻo.

No nā mea ʻoki PDC, hiki iā ʻoe ke kiʻi mai iā mākou ma ka leka uila ma zzbt@zzbetter.com.