Hengshui Aoxing Geological Equipment Co., Ltd
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Hard Formation Geological Core Drilling Bits AQ BQ NQ HQ PQ Impregnated Diamond Turbo Bit
Diamond core bits products include: 1,drill bit: Impregnated diamond diamond drill bit, sufface set diamond drill bit, electroplated diamond drill bit, tc drill bit, PCD drill bit, thin wall drill bit; Hole: alloy reamer, polycrystalline reamer, electroplated reamer,surface set natural diamond reamer;
Impregnated Diamond Core Bit is made with high quality synthetic diamonds, mixed evenly through a metal alloy matrix. Using hierarchical mole technology, to reduce the contact area of diamond bit matrix and the labial surface of the rock surface, and improve the drilling speed. The diamond bit mole with steel layer, to increase the pressure applied to the rock drill lip, improve the drilling speed of the drill bit. Put the first-grade abrasive-high strength, coarse grain diamond and two grade abrasives -low strength, fine grain diamond in the diamond bit, to improve the life of diamond bit.
Parameter of Diamond Core Bit:
| Description | 钻头 Core Bit | 钻头 Core Bit | 金刚石扩孔器Reaming Shell | |||
| 规格型号 | 外径 Outside Diameter | 内径 Intside Diameter | 外径 Outside Diameter | |||
| Model | 英寸Inches | 毫米 mm | 英寸Inches | 毫米 mm | 英寸Inches | 毫米 mm |
| BTW | 2.345 | 59.65 | 1.667 | 42.1 | 2.36 | 59.95 |
| NTW | 2.965 | 75.31 | 2.218 | 56.1 | 2.98 | 75.7 |
| HTW | 3.762 | 95.57 | 2.809 | 71.1 | 3.783 | 96.09 |
| AQ | 1.875 | 47.63 | 1.062 | 26.97 | 1.89 | 48.01 |
| BQ | 2.345 | 59.65 | 1.433 | 36.4 | 2.36 | 59.95 |
| BQ3 | 1.345 | 59.65 | 1.32 | 33.53 | 2.36 | 59.95 |
| NQ | 2.965 | 75.31 | 1.875 | 47.63 | 2.98 | 75.7 |
| NQ3 | 2.965 | 75.31 | 1.775 | 45.08 | 2.98 | 75.7 |
| HQ | 3.762 | 95.57 | 2.5 | 63.5 | 3.783 | 96.09 |
| HQ3 | 3.762 | 95.57 | 2.406 | 61.11 | 3.783 | 96.09 |
| PQ | 4.805 | 122.05 | 3.345 | 84.96 | 4.828 | 122.65 |
| PQ3 | 4.805 | 122.05 | 3.27 | 83.08 | 4.828 | 122.65 |
| T2-56 | 2.205 | 56 | 1.642 | 41.7 | 2.224 | 56.5 |
| T2-76 | 2.992 | 76 | 2.429 | 61.7 | 3.019 | 76.5 |
| T2-86 | 3.385 | 86 | 2.823 | 71.7 | 3.406 | 86.5 |
| T2-101 | 3.976 | 101 | 3.295 | 83.7 | 3.996 | 101.5 |
| T6-101 | 3.976 | 101 | 3.11 | 79 | 3.996 | 101.5 |
| T6-131 | 5.157 | 131 | 4.252 | 108 | 5.157 | 131.5 |
Drill Bit Selection Reference Table:
| Formation hardmess | rock | abrasiveness | Bit Matrix Range | ||||||||||
| HRC55 | HRC 45-50 | HRC 40-45 | HRC 35-40 | HRC 30-35 | HRC 25-30 | HRC 20-25 | HRC 15-20 | HRC 10-15 | HRC 5-10 | HRC 0-0-5 | |||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | |||
| soft | Clay,shale,verysoft,sandstone,marl argilite,volianictuff.ect. | Hihg | ● | ● | ● | ● | |||||||
| Medium | ● | ● | ● | ● | |||||||||
| Low | ● | ● | ● | ● | |||||||||
| medium-hard | limestone,rhyolite,lava,andesite,marble,hard sandstone,limonite,dolomite,schist,ect. | High | ● | ● | ● | ● | ● | ● | |||||
| Medium | ● | ● | ● | ● | |||||||||
| Low | ● | ● | ● | ● | |||||||||
| hard | Basalt,gmeiss,granodiorite,amphibolite,pegmatite,diabase.ect. | High | ● | ● | ● | ● | ● | ||||||
| Medium | ● | ● | ● | ● | |||||||||
| Low | ● | ● | ● | ● | |||||||||
| very hard | Hard granite,quartzitic,xonglomerate,quarizite hard slate,rhyolite,ect. | High | ● | ● | ● | ● | ● | ● | ● | ||||
| Medium | ● | ● | ● | ● | ● | ● | |||||||
| Low | ● | ● | ● | ||||||||||
Diamond Drill Bit Lip Shape:
| Full Round |  | Higher diamond content in the bit face.higher penetration rate.and suitable for drilling hard rocks. |
Semi-round | | Even diamond distribution in the bit face,suitable for drilling medium-hard and hard rocks.or a little broken and loose formations. |
Fiat | | For impregnated diamond bit oniy,suitable for drilling hard abrasive rocks. |
Bottom Discharge Design | | Suitable for drilling sedimentary or metamorphic formations containing more powder mineraiw with high core recovery percentage,and no excessive core washout. |
Stepped | | Suitable for dr drilling medium-hard,broken or interbedded formations, hoie deviation can be prevented. |
Tapered | | Suitable for drilling soft and medium-hard formations with high penetration rate. |
Serrated Profile | | Suitable for drilling hard dense formations with high penetration rate. |
Staggered Concentric Profile | | Suitabie for drilling hard dense formations with high penetration rate under low bit weight. |
GearWheel | | Suitabie for drilling hard dense formations with high penetration rate. |
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