Whakarāpopototanga
Kua hurihia e te Polycrystalline Diamond Compact (PDC), e mōhiotia whānuitia ana ko te taimana hiato, te umanga miihini tika nā tōna pakeketanga tino pai, tōna ātete ki te kakahu, me tōna pumau ki te wera. Ka whakaratohia e tēnei pepa he tātaritanga hohonu mō ngā āhuatanga rauemi o te PDC, ngā tukanga hanga, me ngā tono matatau i roto i te miihini tika. Ka hipokina e te matapakinga tōna tūranga i roto i te tapahi tere-teitei, te huri tino-tika, te miihini moroiti, me te hanga waahanga rererangi. Hei tāpiri, ka arohia ngā wero pēnei i te utu whakaputa teitei me te pakarukaru, me ngā au o te hangarau PDC ā muri ake nei.
1. Kupu Whakataki
Ko te miihini tika e hiahia ana ki ngā rauemi he tino pakari, he roa, he pumau hoki te pāmahana kia eke ki te taumata tika o te maikorone. Ko ngā rauemi taputapu tuku iho pēnei i te tungsten carbide me te maitai tere-rahi ka hinga i ngā āhuatanga tino kino, ā, ka hua ake te whakamahi i ngā rauemi matatau pēnei i te Polycrystalline Diamond Compact (PDC). Ko te PDC, he rauemi hangai ki te taimana, e whakaatu ana i te mahi tino pai ki te miihini i ngā rauemi pakeke me ngā rauemi pakarukaru, tae atu ki ngā uku, ngā mea whakahiato, me ngā maitai whakapakeke.
Ka tūhuratia e tēnei pepa ngā āhuatanga taketake o te PDC, ōna tikanga hanga, me tōna pānga whakarerekētanga ki te miihini tika. Hei tāpiri, ka tirohia ngā wero o nāianei me ngā whanaketanga ā muri ake nei o te hangarau PDC.
2. Ngā Āhuatanga Rauemi o te PDC
Ko te PDC he paparanga taimana polycrystalline (PCD) e herea ana ki tētahi papa tungsten carbide i raro i ngā āhuatanga pēhanga teitei, pāmahana teitei (HPHT). Ko ngā āhuatanga matua ko:
2.1 Te Tino Pakeke me te Ātete ki te Mau
Ko te taimana te rauemi tino mārō (ko te pakeke o Mohs he 10), ā, he mea tino pai te PDC mō te miihini i ngā rauemi whakakoi.
Ka roa ake te ora o te taputapu, ka whakaiti i te wā kore mahi o te miihini tika.
2.2 Te Arahi Wera Teitei
Mā te marara wera whai hua ka ārai i te rerekētanga o te pāmahana i te wā e miihini ana i te tere tiketike.
Ka whakaiti i te kakahu o te taputapu, ka whakapai ake hoki i te āhua o te mata.
2.3 Te Pūmautanga Matū
Ātete ki ngā tauhohenga matū me ngā rauemi rino me ngā rauemi kore-rino.
Ka whakaiti i te pirau o te taputapu i roto i ngā taiao waikura.
2.4 Te Pakari o te Whati
Ka whakarei ake te papa tungsten carbide i te ātete pānga, ka whakaiti i te pakaru me te pakaru.
3. Tukanga Hanga o te PDC
He maha ngā mahi nui e whai wāhi ana ki te hanga PDC:
3.1 Te Hanganga Paura Taimana
Ka hangaia ngā matūriki taimana hangai mā te HPHT, mā te whakatakotoranga kohu matū rānei (CVD).
3.2 Tukanga Sintering
Ka tāia te paura taimana ki runga i tētahi papa tungsten carbide i raro i te pēhanga nui (5–7 GPa) me te pāmahana (1,400–1,600°C).
Mā te whakakorikori konganuku (hei tauira, te cobalt) ka āwhina i te hononga taimana-ki-taimana.
3.3 Tukatuka-muri
Ka whakamahia te mīhini taiaho, te mīhini tuku hiko rānei (EDM) hei hanga i te PDC hei taputapu tapahi.
Ka whakarei ake ngā maimoatanga mata i te piri me te whakaiti i ngā ahotea toenga.
4. Ngā Whakamahinga i roto i te Mīhini Tika
4.1 Te Tapahi Tere-Tirohia o ngā Rauemi Kore-Waro
He tino pai ngā taputapu PDC mō te miihini i ngā mea whakahiato konumohe, parahi, me te muka waro.
Ngā tono i roto i te motuka (mīhini piston) me te hikohiko (mira PCB).
4.2 Te Huri Tino Tika o ngā Wāhanga Whatu
E whakamahia ana i roto i te hanga arotahi me te whakaata mō ngā taiaho me ngā karu tiro.
Ka tutuki te taratara o te mata i raro i te maikorona (Ra < 0.01 µm).
4.3 Te Mīhini-Iti mō ngā Pūrere Hauora
Ka hangaia e ngā wiri iti me ngā mira pito PDC ngā āhuatanga matatini o ngā taputapu pokanga me ngā tāpiringa.
4.4 Te Mīhini Wāhanga Rererangi
Te miihini i ngā koranu titanium me te CFRP (ngā pūmua whakakaha muka waro) me te iti rawa o te kakahu taputapu.
4.5 Ngā Uku Matatau me te Mīhini Rino Whakapakari
He pai ake te mahi a te PDC i te cubic boron nitride (CBN) i roto i te miihini i te silicon carbide me te tungsten carbide.
5. Ngā Wero me ngā Here
5.1 Ngā Utu Whakaputa Teitei
Ko ngā utu mō te hanga HPHT me te rauemi taimana e whakawhāiti ana i te whakamahinga whānui.
5.2 Te Pakaru o te Tapahi Whakamutu
Ka ngawari te pakaru o ngā taputapu PDC ina miihinihia ana ngā mata motumotu.
5.3 Te Pirautanga Wera i ngā Pāmahana Teitei
Ka puta te whakakāwhatu i runga ake i te 700°C, ka whakawhāiti i te whakamahinga i roto i te miihini maroke o ngā rauemi rino.
5.4 Te Hototahitanga Iti ki ngā Konganuku Ferrous
Ka tere ake te pakaru o te rino i ngā tauhohenga matū.
6. Ngā Auahatanga me ngā Auahatanga o te Ao kei te heke mai
6.1 PDC Hanganga-Nano
Mā te whakaurunga o ngā pata nano-taimana ka whakanui ake i te pakari me te ātete ki te kakahu.
6.2 Ngā Utauta PDC-CBN Ranu
Te whakakotahi i te PDC me te cubic boron nitride (CBN) mō te miihini whakarewa rino.
6.3 Te Hanga Tāpiri o ngā Utauta PDC
Mā te tānga 3D ka taea ngā āhuahanga uaua mō ngā otinga miihini ritenga.
6.4 Ngā Paninga Matatau
Ka whakapai ake te roa o te ora o te taputapu mā ngā paninga waro rite ki te taimana (DLC).
7. Whakamutunga
Kua noho te PDC hei mea nui mō te miihini tika, e tuku ana i te mahi tino pai i roto i te tapahi tere, te huri tino tika, me te miihini moroiti. Ahakoa ngā wero pēnei i te utu nui me te pakarukaru, ko ngā whanaketanga tonu i roto i te pūtaiao rauemi me ngā tikanga hanga e kī ana ka whakawhānui ake i ana tono. Ko ngā auahatanga a meake nei, tae atu ki te PDC nano-hanganga me ngā hoahoa taputapu ranu, ka whakakaha i tana tūranga i roto i ngā hangarau miihini o te whakatupuranga e whai ake nei.
Wā tuku: Hōngongoi-07-2025
