Gw Carbide-HSS Twist Drill Bit
Zhuzhou Grewin Tungsten Carbide Tools Co., Ltd.- Customized:Non-Customized
- Standard:CQC&ISO
- Length:Taper-length
- Type:Twist Drill Bit
- Material:Tungsten Carbide
- Usage:Wood Drilling, Metal Drilling
Base Info
- Model NO.:All sizes
- Flute:1-5
- Quality:Top Quality in China
- Chemical Composition:6%-12% Co-Wc
- HRC:45-55 55-65, etc
- Coating:CVD, PVD, Double Coating
- Certificates:ISO9001-2008, SGS
- Place of Origin:Zhuzhou-Carbide City
- Cutting Length:3xd,5xd,8xd,etc
- Package:1PCS in a Plastic,10PCS in a Group
- Types:Without Coolant and with Double Coolant
- Transport Package:Plastic Box, Standard Export Carton
- Specification:33x29x19cm
- Trademark:GW
- Origin:Zhuzhou
- HS Code:8208101900
- Production Capacity:6 Million PCS Annually
Description
Basic Info.
Model NO. All sizes Flute 1-5 Quality Top Quality in China Chemical Composition 6%-12% Co-Wc HRC 45-55 55-65, etc Coating CVD, PVD, Double Coating Certificates ISO9001-2008, SGS Place of Origin Zhuzhou-Carbide City Cutting Length 3xd,5xd,8xd,etc Package 1PCS in a Plastic,10PCS in a Group Types Without Coolant and with Double Coolant Transport Package Plastic Box, Standard Export Carton Specification 33x29x19cm Trademark GW Origin Zhuzhou HS Code 8208101900 Production Capacity 6 Million PCS AnnuallyProduct Description
Raw micro grain material, high hardness and T.R.S
Co: 10%,Wc:90%
TRS: >3600 N/mm2
HRA: 91.8-92.4, HRC:45-50/55-60/65/68
Grain size: 0.4-0.6μm
Helix angle: 117°,140°
Diameter of cutting edge: 0.2-0.9mm; 1-20mm
Diameter of rods: 4-20mm
Length: 50-300mm
Cutting Form: Without Coolant and With Double Coolant
Flutes No.: 1-5
Application and usage
Suitable to cut Copper, Cast Iron, Carbon steel, Tool steel, Mould steel, Stainless steel, Plastic, Arcylic, etc.
Coating
Black oxide is an inexpensive black coating. A black oxide coating provides heat resistance and lubricity, as well as corrosion resistance. Coating increases the life of high-speed steel bits.
Titanium nitride (TiN) is a very hard ceramic material that can be used to coat a high-speed steel bit (usually a twist bit), extending the cutting life by three or more times. However, when the bit is sharpened the new edge will not have the benefits of the coating.
Titanium aluminum nitride (TiAlN) is a similar coating that can extend tool life five or more times.
Titanium carbon nitride (TiCN) is another coating also superior to TiN.
Diamond powder is used as an abrasive, most often for cutting tile, stone, and other very hard materials. Large amounts of heat are generated by friction, and diamond coated bits often have to be water cooled to prevent damage to the bit or the workpiece.
Zirconium Gewin has been used as a drill bit coating for some tools under the Craftsman brand name
Coatings | Hardness HV | Thickness um | Friction Coefficient | Oxidation Temp | Color |
AlTiN | 3500 | 2.5-3 | 0.3 | 900 | Black |
TiAlN | 2800 | 2.5-3 | 0.3 | 900 | Violet |
TiSiN | 3600 | 3 | 0.45 | 1000 | Copper |
AlTiSiN | 400 | 3 | 0.4 | 1200 | Blue |
TiN | 2500 | 2-3 | 0.5 | 600 | Gold |
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More information, please kindly contact us.
Best regards
Grewin carbide