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US2121202A
(en)
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Rotary bit
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Yahiaoui et al.
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Independent analyses of cutting and friction forces applied on a single polycrystalline diamond compact cutter |
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US2193186A
(en)
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|
Twist drill
|
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JPS61179846A
(ja)
|
|
超硬合金ボデイ−
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CN105113995A
(zh)
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一种强化心部破岩能力的复合钻头
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DE102014111846A1
(de)
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Spiralbohrer mit Keramikeinsätzen
|
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WO2011049864A4
(en)
|
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Cutting structures for casing component drillout and earth-boring drill bits including same
|
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GB530113A
(en)
|
|
Improvements relating to percussive drilling bits
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SE128619C1
(enrdf_load_stackoverflow)
|
|
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US6244364B1
(en)
|
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Earth-boring bit having cobalt/tungsten carbide inserts
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RU2090734C1
(ru)
|
|
Долото для вращательного бурения
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US7445063B2
(en)
|
|
Rock drill bit assembly
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|
Oliveira et al.
|
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Unique hybrid drill bit with novel PDC cutters improves performance in ultra-deepwater Brazil pre-salt application |
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US2602639A
(en)
|
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Rock drill bit
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US2614811A
(en)
|
|
Drill
|
|
Mellor
|
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Mechanics of Cutting and Boring: Kinematics of axial rotation machines |
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Saeidi1a et al.
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Wear Assessment of the WC/CO cemented carbidetricone drillbits in an open pit mine |
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US3077938A
(en)
|
|
Cable tool reamer
|
|
JP2013160660A
(ja)
|
|
岩盤掘削工法の判定方法
|
|
SU59576A1
(ru)
|
|
Самозатачивающийс бур
|
|
US3145791A
(en)
|
|
Inserts for rock drill bits
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Cardu et al.
|
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An analysis of metal wear in rock excavation by TBM |
|
US2592440A
(en)
|
|
Rock drilling tool
|
|
US1965491A
(en)
|
|
Rock drill
|
|
CH272188A
(de)
|
|
Stossbohrkrone mit mindestens zwei Hartmetallschneideinsätzen.
|