He kupu whakataki poto mō ngā kaitapahi PDC

 

Kāore i te rite te hoahoa o ngā mata keri PDC o ēnei rā ki ērā o ngā tau kua pahure. Kua piki ake te kaha o te kume me te ātete pānga mā te 33% pea, ā, kua piki ake te kaha o ngā whiri tapahi mā te ≈80%. I taua wā anō, kua pai ake ngā āhuahanga me te hangarau o ngā hanganga tautoko, ā, kua hua ake he hua mata pakari, whai hua hoki.
Rauemi Tapahi
He mea hanga ngā Tapahi PDC mai i te papa kāpira me te kirikiri taimana. Ko te wera nui o te 2800 nekehanga me te pēhanga nui o te 1,000,000 psi te mea e hanga ana i te kiato. He koranu cobalt anō hoki te mea hei whakakorikori mō te tukanga sintering. Ka āwhina te cobalt ki te hono i te kāpira me te taimana.
Te maha o ngā Kaitapa
He iti ake ngā taputapu tapahi e whakamahia ana mō ngā mata PDC ngohengohe, nā te mea ka tangohia e ia taputapu he hohonutanga tapahi. Mō ngā hanganga pakari, he mea nui kia maha ake ngā taputapu tapahi hei whakakapi i te hohonutanga tapahi iti.

 

Ngā Mīti Wiri PDC – Rahi o ngā Kaiwhatu
Mō ngā hanganga ngohengohe, ka whiriwhiria e mātou ngā tapahi nunui ake i ngā hanganga mārō. Ko te whānuitanga o ngā rahi paerewa he 8 mm ki te 19 mm mō ia momo.

 

 

Ko te tikanga, ka whakaahuahia e mātou te whakatakotoranga o te hoahoa whata tapahi mā ngā koki o te rake o muri me ngā koki o te rake taha.
●Ko te koki o muri o te kaitapahi ko te koki e whakaatuhia ana e te mata o te kaitapahi ki te hanganga, ā, ka inehia mai i te poutū. Ka rerekē ngā koki o muri o te kaitapahi i waenga i te 15° ki te 45°, i te nuinga o te wā. Kāore i te pumau puta noa i te mata, i te mata rānei ki te mata. Ko te rahi o te koki o muri o te kaitapahi mō ngā mata wiri PDC ka pā ki te Auau Penetrate (ROP) me te ātete o te kaitapahi ki te kakahu. I te pikinga o te koki o muri o te kaitapahi, ka heke te ROP, engari ka piki ake te ātete ki te kakahu i te mea kua horahia te kawenga ki runga i tētahi wāhi nui ake. Ko ngā kaitapahi PDC me ngā kaitapahi iti o muri ka tango i ngā hohonutanga tapahi nui, nō reira he kaha ake, he nui te taipana, ā, ka tere ake te kakahu me te nui ake o te mōrearea o te kino o te pānga.

 

 

●Ko te rake taha o te kaitapahi he ine ōrite mō te aronga o te kaitapahi mai i te maui ki te matau. He iti noa ngā koki o te rake taha. Ka āwhina te koki o te rake taha ki te horoi i te kōhao mā te tuku ā-mīhini i ngā tapahi ki te porowhita.