tungsten carbide drill bits,twist drills,solid tungsten carbide
drill bits,solid carbide drill bits
Drill Bit Coating material:Commonly used materials for drill bits are low carbon steel, high
carbon steel, high speed steel, cobalt steel, tungsten carbide,
polycrystalline diamond, etc. Surface coatings include black oxide,
titanium nitride (TiN), titanium aluminum nitride (TiAlN), titanium
carbonitride (TiCN) and diamond powder.
Straight shank right hand carbide twist drill Standar size:
| d=D Cutting dia. | Lc Cutting length | L Overall length |
| 0.80-1.00mm | 12mm | 50mm |
| 1.05-1.50mm | 14mm | 50mm |
| 1.55-5.00mm | 18mm | 50mm |
| 2.05-2.50mm | 20mm | 50mm |
| 2.55-3.00mm | 25mm | 50mm |
| 3.05-4.00mm | 25mm | 50mm |
| 4.05-4.50mm | 25mm | 50mm |
| 4.55-5.00mm | 25mm | 50mm |
| 5.05-6.00mm | 25mm | 50mm |
| 6.05-6.50mm | 30mm | 60mm |
| 6.55-7.00mm | 30mm | 60mm |
| 7.05-7.50mm | 40mm | 75/80mm |
| 7.55-8.00mm | 40mm | 75/80mm |
| 8.05-8.50mm | 40mm | 75/80mm |
| 8.55-9.00mm | 40mm | 75/80mm |
| 9.05-9.50mm | 40mm | 75/80mm |
| 9.55-10.00mm | 40mm | 75/80mm |
| 10.05-10.50mm | 45mm | 100mm |
| 10.55-11.00mm | 45mm | 100mm |
| 11.05-11.50mm | 50mm | 100mm |
| 11.55-12.00mm | 50mm | 100mm |
Parameters setting for carbide drill bit milling different
materials:
Work piece material |
Strength of extension σ b/MP a | Hardness HB | Feed f/(mm/r) | Speed V/(m/min) |
Coolant |
| d/mm |
| 5~10 | 11~30 | 5~10 | 11~30 |
Tool steel | 1000 1800~1900 2300 | 300 500 575 | 0.08~0.12 0.04~0.15 <0.02 | 0.12~0.2 0.05~0.08 <0.03 | 35~40 8~11 <6 | 40~45 11~14 7~10 |
Water-insoluble cooling oil
|
| Nickel chrome steel | 1000 1400 | 300 420 | 0.08~0.12 0.04~0.05 | 0.12~0.2 0.05~0.08 | 35~40 15~20 | 40~45 20~25 |
| Cast steel | 500~600 | —— | 0.08~0.12 | 0.12~0.2 | 35~38 | 38~40 |
| Stainless steel | —— | —— | 0.08~0.12 | 0.12~0.2 | 25~27 | 27~35 |
| Heat resistant steel | —— | —— | 0.01~0.05 | 0.05~0.1 | 3~6 | 5~8 |
| Gray iron | —— | 200 | 0.2~0.3 | 0.3~0.5 | 40~45 | 45~60 | Dry cut or emulsion |
| Alloy iron | —— | 230~350 | 0.03~0.07 | 0.05~0.1 | 20~40 | 25~45 | Water-insoluble cooling oil or emulsion
|
| —— | 350~400 | 0.03~0.05 | 0.04~0.08 | 8~20 | 10~25 |
| malleable cast iron | —— | —— | 0.15~0.2 | 0.2~0.4 | 35~38 | 38~40 |
Dry cut or emulsion |
| Brass | —— | —— | 0.07~0.15 | 0.1~0.2 | 70~100 | 90~100 |
| Cast bronze | —— | —— | 0.07~0.1 | 0.09~0.2 | 50~70 | 55~75 |
| Aluminum | —— | —— | 0.15~0.3 | 0.3~0.8 | 250~270 | 270~300 | Dry cut or gasonline |
| Hard rubber | —— | —— | 0.2~0.4 | 30~60 | |
| Thermosetting resin | —— | —— | 0.04~0.1 | 60~90 | |
| Plastic | —— | —— | 0.05~0.25 | 30~60 | |
| Glass | —— | —— | Manual | 4.5~4.7 | |
| Glass fiber composite material | —— | —— | 0.063~0.127 | 198 | |
1,Tip angle 118°,d tolerance within 0.005mm
2, Standard size in stock, ready to ship.
2, Accept customize.
product picture:
Specification:
Shank:Round Shank,Straight shank
Usage:STEEL,rock drilling,aluminium,drill holes,cnc bit for wood
Drill bits can be divided into two categories, one is flat drills,
twist drills, center drills, deep hole drills and other drilling
tools; the other is reaming drills, countersink drills and other
reaming drills. Spiral drill bits are used in construction projects
with an outer diameter of 400 to 600 mm and a length between 12
meters and 8 meters. Use flat-bottom drill bits for loose soil
layers, use rake bits for miscellaneous fill soil layers, and use
cylinders for obstacles such as concrete and strips Type drill.
