T8312 Drill Bit
【Material】 Beryllium Bronze, Aluminum Bronze 【Application】 It is suitable for explosion-proof drills for drilling, drilling, and reaming of special materials. 【Material introduction】 Explosion-proof tools are divided into two materials: one is beryllium copper alloy, and the other is aluminum copper alloy. (Also known as beryllium bronze and aluminum bronze) 1. Aluminum-copper alloy explosion-proof tools are made of precious and rare metals, smelted and forged, and the surface is yellow. The hardness of the working face is above HRC25°, and the tensile strength δb>75-85kgf/mm2. Continuous use in the space of flammable gas ethylene (concentration 7.8%) ensures safety, and no sparks and explosions will be generated by impact (impact), friction, or falling weight. 2. Beryllium-copper alloy explosion-proof T-tools are originally made of military materials and precious rare metals. The surface is also yellow after being made into tools. The hardness of the working face is above HRC35°. The tensile strength δ b>105-120kgf/mm2. In the space of flammable gas hydrogen (concentration 21%), it can be used continuously and quickly without any spark explosion due to impact (bump), friction, or falling hammer. Beryllium copper alloy explosion-proof tools also have a special anti-magnetic function. It can be used normally in a working environment with a magnetic field.
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T8312 Drill Bit
Details
| Number | Φ (mm) | L (mm) | Be-Cu （kg） |
| T8312-02 | 6 | 100 | 20 |
| T8312-04 | 7 | 120 | 30 |
| T8312-06 | 8 | 140 | 50 |
| T8312-08 | 9 | 160 | 75 |
| T8312-10 | 10 | 180 | 100 |
| T8312-12 | 11 | 200 | 120 |
| T8312-14 | 12 | 220 | 170 |
| T8312-16 | 13 | 240 | 220 |
| T8312-18 | 14 | 260 | 280 |
| T8312-20 | 15 | 280 | 360 |
| T8312-22 | 16 | 300 | 440 |
| T8312-24 | 17 | 300 | 500 |
| T8312-26 | 18 | 320 | 600 |
| T8312-28 | 19 | 320 | 700 |
| T8312-30 | 20 | 330 | 800 |
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