Pehea e koho ai i nā mea ʻoki PDC kūpono?

ʻAʻole like loa ka hoʻolālā ʻana o nā PDC drill Bits o kēia lā ma ke ʻano he matrix me ko kekahi mau makahiki i hala. Ua piʻi aʻe ka ikaika o ka tensile a me ke kū'ē ʻana i ka hopena ma ka liʻiliʻi he 33%, a ua piʻi aʻe ka ikaika o nā brazes ʻokiʻoki ma ≈80%. I ka manawa like, ua hoʻomaikaʻi ʻia nā geometries a me ka ʻenehana o nā ʻano kākoʻo, e hopena ana i nā huahana matrix paʻa a huahua.
Mea ʻokiʻoki
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. Hana pū kekahi cobalt alloy ma ke ʻano he catalyst no ke kaʻina hana sintering. Kōkua ka cobalt i ka hoʻopaʻa ʻana i ka carbide a me ke daimana.
Helu o nā mea ʻoki
Hoʻohana pinepine mākou i nā mea ʻoki liʻiliʻi ma nā ʻāpana PDC palupalu no ka mea e wehe ana kēlā me kēia mea ʻoki i ka hohonu o ka ʻoki. No nā ʻano paʻakikī, he mea nui e hoʻohana i nā mea ʻoki hou aʻe e uku no ka hohonu liʻiliʻi o ka ʻoki.

Nā ʻāpana wili PDC - Ka nui o nā mea ʻoki
No nā ʻano palupalu, koho pinepine mākou i nā mea ʻoki nui aʻe ma mua o nā ʻano paʻakikī. ʻO ka maʻamau, ʻo ka laulā maʻamau o nā nui mai 8 mm a 19 mm ma kekahi ʻāpana.

Ma keʻano laulā, wehewehe mākou i ke kuhikuhi hoʻolālā o ka ʻūpā ʻokiʻoki ma ke kua o ka ʻūpā a me nā kihi o ka ʻūpā ʻaoʻao.
●ʻO ke kua o ka ʻoki ʻoki hope ke kihi i hōʻike ʻia e ke alo o ka mea ʻoki i ke kahua a ua ana ʻia mai ke kū pololei. ʻOkoʻa nā kihi kua o ka ʻoki hope ma waena, maʻamau, 15° a 45°. ʻAʻole lākou i paʻa ma waena o ka bit, ʻaʻole hoʻi mai ka bit a i ka bit. Hoʻopilikia ka nui o ke kihi kua o ka ʻoki ʻoki no nā ʻāpana wili PDC i ka Penetration Rate (ROP) a me ke kūʻē ʻana o ka mea ʻoki i ke komo ʻana. I ka piʻi ʻana o ke kihi kua, emi iho ka ROP, akā piʻi ka kūʻē ʻana i ke komo ʻana i ka wā e hoʻolaha ʻia ai ke kaumaha i kau ʻia ma luna o kahi ʻāpana nui aʻe. Lawe nā mea ʻoki PDC me nā kua liʻiliʻi i nā hohonu o ka ʻoki ʻana a no laila ʻoi aku ka ikaika, hoʻoulu i ka Torque kiʻekiʻe, a ua hoʻonui ʻia ka ʻaʻahu a me ka nui o ka pilikia o ka pōʻino.

●ʻO ke kāʻei ʻaoʻao ʻokiʻoki he ana like ia o ke kuhikuhi ʻana o ka mea ʻokiʻoki mai ka hema a i ka ʻākau. He liʻiliʻi pinepine nā kihi kāʻei ʻaoʻao. Kōkua ke kihi kāʻei ʻaoʻao i ka hoʻomaʻemaʻe ʻana i ka lua ma ke kuhikuhi ʻana i nā ʻokiʻoki i ka annulus.