Goliath MC Spiral Point (Gun) TiAlN Coated HSS-Co5 Tap

Goliath MC Spiral Point (Gun) TiAlN Coated HSS-Co5 Tap

• HSS-Co5 (Cobalt) Titanium Aluminium Nitride (TiAlN) High Performance Spiral Point Machine Tap.
• Spiral point taps, also known as 'Gun nose taps', have straight flutes supplemented by angular cutting faces at the lead.
• The design of the cutting portion propels the swarf ahead of the tap leaving the flutes clear for the flow of coolant to the cutting teeth.
• Primarily designed for use in through holes, these taps can be used in blind holes provided that there is ample clearance beyond the threaded section to accommodate the swarf.
• The advantages of a gun nose tap are the shearing action of the angular cutting faces, which produces a fine finish on the threads and shallower flutes.
• This allows a stronger cross section throughout the tap.
• Titanium Aluminium Nitride (TiAlN) is a thin film coating that was developed from Titanium Nitride.
• TiAlN offers higher temperature resistance than TiN, as well as slightly higher hardness and especially higher hot hardness (i.e. the hardness at high temperatures).
• It is primarily used in high-temperature environments above the limits of TiN usage. This coating works by forming a thin surface layer of Alumina (Al2 O3 ), or Aluminium Oxide ceramic. As the layer wears it continuously reforms.
• 50% Machining Speed Increase is achievable.
• Metric Coarse angle of thread is 60 degrees.
• The crest is flat and the thread has clearance at the root allowing external thread and internal thread to engage well.
• Larger root radius and lower thread height enable easy screw thread processing and increase thread screw strength.
• The major diameter of external thread and pitch are specified by a simple numerical value (most commonly measured in millimetres).