Color-Coded Taps for Different Materials
Dormer Pramet’s Shark line of material-specific taps are said to offer high performance and process security.
Dormer Pramet’s Shark line of material-specific taps are said to offer high performance and process security. Color-coded rings on the shank identify material suitability and support quick and easy tool selection. Yellow is for structural, carbon and low-alloy steels; red is for alloy steels; blue is for stainless steels; and white is for cast irons.
The taps are available in standard ANSI shanks and squares with DIN overall length, offering extra reach and compatibility with inch standard tap holding. The taps’ geometries reduce axial forces and torque compared to conventional taps, ensuring problem-free threading of blind and through holes.
All Shark taps are manufactured from a powder metallurgy tool steel, which provides a combination of toughness and edge strength and enables the tap to perform at higher cutting temperatures while offering performance and tool life.
The spiral flute taps (yellow, red and blue) incorporate an edge treatment to increase strength and reduce microchipping on the cutting edges for improved performance and tool life.
An internal coolant option (white form E taps) improves tool life, provides chip evacuation when threading short, chipping materials, and is beneficial in horizontal blind-hole machining.
Consider these alternatives when conventional drilling can't do the job.
The right choices in tooling and technique can optimize the thread turning process.
One of the most common methods of tapping in use today on CNC machines is 'rigid tapping' or 'synchronous feed tapping.' A rigid tapping cycle synchronizes the machine spindle rotation and feed to match a specific thread pitch. Since the feed into the hole is synchronized, in theory a solid holder without any tension-compression can be used.