Ngā Mata Wīra o te Kohatu: Te Tika o te Hangarau mō te Kōhatu, te Pereki, me te Konukuraiti

Te Āhua o te Mata Wiri Kohatu Mahi-Teitei

He mea whakamiharo ia wāhanga o te pakitara, ā, he mea hanga kia tū atu i ngā kaha o te waku me te pānga kino:

• Upoko Tapahi me te Mata o te Carbide: Kei roto i te pito pakihi he pito tungsten carbide (ngā momo rite ki te YG8C), he mea whakawera ki te tinana maitai mā te whakamahi i ngā tukanga pāmahana teitei. Ka kuru tēnei rauemi tino mārō (HRC 55+) i te kirikiri, ā, ka ātete ki te pakū ka whakapōturi tonu i ngā mata HSS.
• Hoahoa Pūtorino Arotau: Ka taea e ngā pūtorino porowhita-rua i mirahia mai i te maitai koranu Cr40 te tango pai i ngā paru puehu mai i te kōhao. Ka ārai tēnei i te here o te moka me te wera nui, me te whakanui ake i te tere o te urunga tae atu ki te 40% ki te whakaritea ki ngā hoahoa pūtorino kotahi.
• Āhuahanga Tika: Mā te koki pito 130° (±2°) ka taurite te tapahi kaha me te hanganga pakari, ā, mā ngā whirihoranga pane whakawhiti, ngā whirihoranga tapahi-whā rānei ka tohatoha ōrite te kawenga puta noa i te pito mō te roa o te ora.
  

  Ngā Hangarau Whanui e Ārahi ana i te Mahi

  Ngā Rauemi me ngā Paninga Matatau

  Ka whakamahia e ngā mata kounga teitei ngā paninga chromium/nickel e pania ana mā te whakatakotoranga hiko. Ka whakaitihia e tēnei te waku tae atu ki te 30%, ka ārai i te waikura, ā, ka roa ake te ora o te mahi ahakoa ka kerihia he kirikiri kirikiri, he raima whai rawa rānei i te silica 1. Ka whakamahia e te papa te maitai konupora nui hei ātete tino pai ki te ngenge i raro i ngā kawenga pānga.

  Te Tika Paerewa ISO

  Ka piri ngā kaihanga matua ki ngā paerewa ISO 5468:2017, e whakapūmau ana i te ōritetanga o ngā āhuatanga mō:

  • Te āputaputa o te pito-ki-te-waewae (te manawanui ≤0.05mm)
  • Te kokiritanga o te pito whakarewa mārō me te kounga o te whakapūmau
  • Ngā koki porowhita putorino kua arotauhia mō te tere o te tango paru

  Ngā Hanganga Tapahi Arotau

  • Ngā Tohutohu Carbide Whakawhiti: E whā ngā tapahi carbide kua koki tika hei hanga i tētahi pūwāhi pokapū-ake e kore ai e hikoi, e tere ake ai hoki te urunga ki roto i te raima whakakaha-rebar.
  • Ngā Tohu Pātene Parabolic/Spherical: Mō ngā mata hama DTH (Down-The-Hole) e keri ana ki roto i ngā rauemi tino kino, ka tukuna e ēnei āhuahanga he roa ake te ora e 2–3 ngā wā ki ngā tohu papatahi.
    

    Ngā Hangarau Whanui e Ārahi ana i te Mahi

    Ngā Rauemi me ngā Paninga Matatau

    Ka whakamahia e ngā mata kounga teitei ngā paninga chromium/nickel e pania ana mā te whakatakotoranga hiko. Ka whakaitihia e tēnei te waku tae atu ki te 30%, ka ārai i te waikura, ā, ka roa ake te ora o te mahi ahakoa ka kerihia he kirikiri kirikiri, he raima whai rawa rānei i te silica 1. Ka whakamahia e te papa te maitai konupora nui hei ātete tino pai ki te ngenge i raro i ngā kawenga pānga.

    Te Tika Paerewa ISO

    Ka piri ngā kaihanga matua ki ngā paerewa ISO 5468:2017, e whakapūmau ana i te ōritetanga o ngā āhuatanga mō:

    • Te āputaputa o te pito-ki-te-waewae (te manawanui ≤0.05mm)
    • Te kokiritanga o te pito whakarewa mārō me te kounga o te whakapūmau
    • Ngā koki porowhita putorino kua arotauhia mō te tere o te tango paru

    Ngā Hanganga Tapahi Arotau

    • Ngā Tohutohu Carbide Whakawhiti: E whā ngā tapahi carbide kua koki tika hei hanga i tētahi pūwāhi pokapū-ake e kore ai e hikoi, e tere ake ai hoki te urunga ki roto i te raima whakakaha-rebar.
    • Ngā Tohu Pātene Parabolic/Spherical: Mō ngā mata hama DTH (Down-The-Hole) e keri ana ki roto i ngā rauemi tino kino, ka tukuna e ēnei āhuahanga he roa ake te ora e 2–3 ngā wā ki ngā tohu papatahi.

    He aha i pai ake ai ngā mahi a ngā mata pereki ngaio

    1. Te Pakari Kore e Taea te Whakakoi: Ko ngā pito o te tungsten carbide kounga-ahumahi e pupuri ana i te koi o te 8–10X te roa atu i ngā momo maitai waro. E whakaatu ana ngā whakamātautau i te keri a ngā mata carbide YG8C i ngā kōhao neke atu i te 500 i roto i te raima C40 i mua i te whakakoi anō.
    2. Whakahaere Wera: Ka mau tonu te āhua tika o ngā putorino mira (ehara i te mea hurihuri) i raro i te wera, ko ngā tinana maitai koranu ia ka ātete ki te whakamahana ahakoa i te 600°C+ – he mea nui ina kerihia ngā turanga hohonu.
    3. Mana Whakahaere Wiri: Mā te whakatakotoranga waro me ngā koki pito i hangaia, ka whakaitihia ngā wiri harmony, ka taea ai te whakahaere maeneene ake i te aratau hama hurihuri i te 27,000 BPM (ngā pupuhi ia meneti).
    4. Te Hiranga o te Whakakorenga Para: Ka puta he pānga "hikinga hau" mai i ngā putorino porowhita-rua e whakakore ana i te 95%+ o ngā tapahi me te kore e whakakore ā-ringa - he mea nui ina keri ana i runga ake, i roto rānei i ngā wāhi kuiti.

    Te Kōwhiri i te Wāhanga Tika: He Aratohu mā te Tohunga

    • Pereki/Raima Ngāwari: Kōwhiria ngā mata SDS Plus 6–12mm me ngā pito parabolic (hei tauira, DURATOOL SF//MAS12150). Ka ārai ngā paninga Chrome-nickel i te pakaru o te pereki whero.
    • Konukura Whakakaha: Ko ngā mata whakawhiti 16–25mm (hei tauira, Henan DKSM666) hei kuru i te kirikiri huri noa i te reera. Whakamahia ngā kakau SDS MAX mō ngā hohonutanga >150mm.
    • Karāniti/Kuatiiti: Kōwhiria ngā pātene DTH (hei tauira, MIROC BR2-95CC8) me ngā whakaurunga karāti āhua porotiti. Ka mimiti ngā tinana maitai konupora-nui i te ru pānga.
    • Keri Matua Hōhonu: Ko ngā toronga SDS MAX 540mm (pēnei i a Torkcraft MX54032) me te kaha keri hohonu 400mm ka pupuri i te pumau mā roto i ngā paparanga honohono.

    Kei tua atu i te wāhanga: Te Whakanui i te Mahi me te Roa o te Ora

    • Hototahi ki ngā Utauta: Whakatauritea ngā mata ki ngā āhuatanga o tō wiri hama. He tino pai te Bosch GSB 185-LI (1,900 RPM, 27,000 BPM) me ngā mata SDS Plus 4–10mm mō te keri i te rā katoa.
    • Ngā Tikanga Whakamatao: Mō ngā hōhonutanga >100mm, okioki i ia 45 hēkona hei tango i te puehu me te whakamatao i te mata. Ka pakaru ngā hononga kua whakarewaina i te wera nui.
    • Ngā Tikanga Whakakoi: Whakamahia he kiore kua pania ki te taimana ki ngā pito o te karāhe ina puhoi te werohanga. Kaua rawa e huri i ngā tinana maitai – ka whakararu tēnei i te maimoatanga wera.

    Whakatau: Ka Tutaki te Hangarau ki te Mahi Whaihua

    Kei roto i ngā mata keri pereki hou te pūtaiao rauemi me te hanga tika – te huri i te kaha ki te pakaru rauemi whakahaeretia. Mai i ngā ine kua whakamanahia e te ISO ki ngā koranu ātete-wera me te carbide kua arotauhia kia rite ki te āhua, ka taea e ēnei taputapu te mahi i te mahi uaua. Ahakoa te here ki te pereki, te keri rānei mā roto i te 400mm o te raima whakapakari, mā te whiriwhiri i te hangarau mata tika ka tere ake, ka ma ake, ka iti ake te utu o ngā hua. I te whanaketanga o ngā rauemi hanga, ka pērā anō hoki te auahatanga o ngā mata keri, me te whai tonu i te whai hua me te manawanui o te tapahi.