News Details
Classification and Characteristics of Taps
Release time:
2025-01-13
The most commonly used taps are extrusion taps, spiral groove taps, straight groove taps, tip taps, pipe taps, nut taps, and hand taps, each with different applications and strengths.
The difference between extrusion taps and cutting taps is that there is no chip removal during tapping, which is their characteristic, while the machined surface of the internal thread is formed by pressing, resulting in a beautiful and smooth appearance. The material wire is continuous without being cut, and the thread strength increases by about 30%. The precision is stable, and due to the larger core diameter of the extrusion tap, it has high durability and torque strength, leading to a longer lifespan and less likelihood of breaking. It is suitable for materials with high ductility, such as iron plates, copper plates, aluminum plates, stainless steel plates, and pipes. However, the requirements for the bottom hole of the extrusion tap are high: if it is too large, the amount of base metal is insufficient, resulting in an excessively large diameter of the internal thread and insufficient strength. If it is too small, the enclosed pressed metal has nowhere to go, causing the tap to break. The calculation formula is: bottom hole diameter = nominal diameter of the internal thread - 0.5 pitch.
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