Solid Carbide Multi Step Drills for Multi Step Hole / Through Hole Chamfering

Application:

• Suitable for multi-step holes and through-hole chamfering.
• It is recommended to regrind 3-5 times.

Feature Advantage:

• Straight grooves and spiral grooves are available for different materials to be processed.
• For different equipment, there are internal and external cooling options.
• The ultra-fine alloy matrix with good strength, toughness and wear resistance combined with the nanostructured TiAlN coating optimized for drilling ensures the high toughness and strength of the tool.
• The unique coating process gives the tool a smooth surface and extremely high wear resistance.
• Outstanding thermal stability and chemical stability provide effective protection for the cutting edge.
• Customized sizes according to customer requirements.

Technical Information:

• Typical application of solid carbide drills:
  • Small diameter hole
  • Tight or precision tolerance hole
  • The hole shorter than a deep hole
• Chip formation and chip evacuation are important issues in drilling. It depends on the workpiece material, blade geometry selection, coolant pressure, capacity, and cutting parameters.
• Chip clogging can cause the drill bit to move radially and affect hole quality, bit life and reliability.
• The drill bit is mounted on the shank chuck and its circumferential runout must be less than 0.02 mm.