Nga niho mira Tricone Rock Drill Bits:
Ko te niho mira (niho maitai) tricone bit te keri mo te hanga toka ngawari ki te reo.
Ko nga paraka tricone niho mira te hanga ngohengohe ka whakamahia ki te wiri iti te kaha compressive, hanga ngohengohe.Ka whakamahia te roa o nga niho matapae i runga i nga koekoe teitei hei whakarato i nga reiti urunga nui rawa atu.Ka whakamahia te anga whakaahuru mau ki te whakahaere i nga kakahu niho.I runga i nga momo moka ngawari ka kapi katoa te anga maataki i nga niho moka.
Ko nga paraka tricone niho mira te hanga reo ka whakamahia ki te keri i te kaha compressive teitei, te hanga toka reo.Ko nga niho toronga pupuhi he iti te roa o te tihi ka whakamahia i roto i tenei raupapa hoahoa moka.Ka whakamahia te anga maataa ki te whakaiti i te mau niho.
Ripanga o te whakarōpūtanga o te pakeke o te hanganga me te kowhiringa moka
| Moka porotaka | IADC waehere moka taimana | Whakaahuatanga hanganga | Momo toka | Te kaha kōpeke (Mpa) | ROP(m/h) |
| Waehere IADC | |||||
| 111/124 | M/S112~M/S223 | Tino ngohe: te hanga ngohengohe piri me te iti o te kaha o te pupuhi. | uku Siltstone kirikiri | <25 | >20 |
| 116/137 | M/S222~M/S323 | Ngohe: te hanga ngohengohe me te iti o te kaha compressive me te kaha drill. | Toka uku Maara Lignite kirikiri | 25~50 | 10~20 |
| 417/527 | M/S323~M/S433 | Waenga ngohengohe: ngawari ki te hanga waenga me te iti o te kaha o te pupuhi me te paopao. | Toka uku Maara Lignite Te kirikiri Siltstone Waiwaiwai Tuff | 50~75 | 5~15 |
| 517/537 | M322~M443 | Waenga: Waenga ki te pakeke te hanga me te kaha o te kaha ki te koopeke me te angiangi o te korikori. | Kohatu paru Toka pouri kirikiri | 75~100 | 2~6 |
| 537/617 | M422~M444 | Waenga pakeke: te hanga pakeke me te mato me te kaha o te pupuhi me te abrasiveness reo. | Toka pouri He toka pakeke Waiwaiwai Te kirikiri Dolomiti | 100~200 | 1.5~3 |
Rahi Paraka Tricone Niho maitai
| Rahi Tonu | IADC auau | API Reg Pin | Toru Hanga-hanga(Nm) |
| 3 7/8"(98.4mm) | 126/216/637 | 2 3/8 | 4100~4700 |
| 4 5/8"(117.4mm) | 126/216/517/537/637 | 2 7/8 | 6100~7500 |
| 5 1/4"(133.3mm) | 126/216/517/537/637 | 3 1/2 | 9500~12200 |
| 5 5/8"(142.8mm) | 126/216/517/537/637 | 3 1/2 | 9500~12200 |
| 5 7/8"(149.2mm) | 126/216/517/537/637 | 3 1/2 | 9500~12200 |
| 6"(152.4mm) | 126/127/216/517/537/617/637 | 3 1/2 | 9500~12200 |
| 6 1/4"(158.7mm) | 126/127/216/517/537/617/637 | 3 1/2 | 9500~12200 |
| 6 1/2"(165mm) | 126/127/216/517/537/617/637 | 3 1/2 | 9500~12200 |
| 7 1/2"(190mm) | 126/216/517/537 | 4 1/2 | 16300~21700 |
| 7 5/8"(193mm) | 126/216/517/537 | 4 1/2 | 16300~21700 |
| 7 7/8"(200mm) | 126/216/517/537 | 4 1/2 | 16300~21700 |
| 8 1/2"(215.9mm) | 117/127/217/437/517/537/617/637 | 4 1/2 | 16300~21700 |
| 9 1/2"(241.3mm) | 117/127/217/437/517/537/617/637 | 6 5/8 | 38000~43400 |
| 9 7/8"(250.8mm) | 117/127/217/437/517/537/617/637 | 6 5/8 | 38000~43400 |
| 10 5/8(269.8mm) | 117/127/137/217/517/537/617/637 | 6 5/8 | 38000~43400 |
| 11 5/8(295.3mm) | 117/127/137/217/517/537/617/637 | 6 5/8 | 38000~43400 |
| 12 1/4"(311.1mm) | 114/127/217/437/517/537/617/637 | 6 5/8 | 38000~43400 |
| 13 5/8"(346.0mm) | 127/217/517/537/617/637 | 6 5/8 | 38000~43400 |
| 14 3/4"(374.6mm) | 127/217/517/537/617/637 | 7 5/8 | 46100~54200 |
| 17 1/2"(444.5mm) | 114/115/125/215/515/535/615/635 | 7 5/8 | 46100~54200 |
| 26"(660.4mm) | 114/115/125/215/515/535/615 | 7 5/8 | 46100~54200 |
TRICONE BITS TE TIKANGA WHAKATANGA
| Rahi ota iti | N/A |
| Utu | |
| Nga Taipitopito mokete | Paerewa Kaweake Tukunga Paerewa |
| Wā Tukunga | 7ra |
| Nga tikanga utu | T/T |
| Te kaha tuku | I runga i te Ota Taipitopito |
