Description:
- Forged with high-quality cobalt bearing high-speed steel by precision grinding technology, it has high hardness, strong wear resistance and stable performance
- The TiN coating can resist high temperature oxidation up to 600 ℃ and is durable and sharp
- Progressiveness quenching process, and grinding edge by CNC machine tool, greatly improve hardness and toughness, and prolong service life
- NC fine grinding 135 ° double back angle and UDL spiral groove design, precise and sharp edge, effectively improve chip removal performance, fast and accurate drilling, more stable feed
Specifications:
Parameter:
3D/5D External Cooling Cutting Parameters
3D/5D internal cooling cutting parameter
- When using this HSS drill bits for the first time, try to cut at 90% of the cutting speed or 85% of the feed speed according to the above data, and then increase the cutting speed and feed rate one by one after the cutting condition is stable
- This standard cutting condition is applicable to water-soluble cutting fluid
- When installing the tool, please use a clean chuck with defects removed, and control the radial runout of the drill bit within 0.02mm
- The cutting conditions in this table are applicable to situations with hole depth below 5D
Notice:
- When drilling steel parts, please ensure sufficient cooling capacity and use metal cutting fluid.
- Good drill pipe rigidity and guide rail clearance can improve drilling accuracy and bit life.
- Please ensure the flatness and cleanness between the magnetic base and the workpiece.
- When drilling thin plates, reinforce the workpieces. When drilling large workpieces, ensure that the workpieces are stable.
- At the beginning and end of drilling, the feed rate shall be reduced by 1/3.
- For materials with large amount of fine powder during drilling, such as cast iron, cast copper, etc., compressed air can be used instead of coolant to help remove chips.
- Please remove the iron scraps wrapped on the drill body in time to ensure smooth chip removal.
Applications:
Our HSS drill bits could to be processed Alloy steel, Tool steel, carbon steel, stainless steel, Cast iron and Titanium alloy. Working material as following:
