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2. Threaded thread properties
2.1 Metallurgical properties
Threads obtained by a cutting tapping operation do not have very notable metallurgical characteristics. In cutting tapping, the material undergoes a cutting operation in the same way as in other machining operations. The material is affected, if at all, only superficially, and is less likely to be affected if tapping is carried out at relatively low cutting speeds. Thermal stress is generally low, and there is no evidence of any metallurgical transformation of the thread material. Moreover, if temperatures in excess of 500 ˚C were produced, there would also be annealing of the tap's upper high-speed steel. It would then lose its hardness so would not be suitable for this application. On the other hand, mechanical stresses still exist and are often linked...
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Material processing - Assembly
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Threaded thread properties
References
Standardization
- Cylindrical threads – Vocabulary. - ISO 5408 - 12-1983
- ISO general-purpose threads – Basic profile – Part 1: metric threads. - NF ISO 68-1 - 3-1999
- Cylindrical shank turning tools – Tail diameter and square drive dimensions. - NF ISO 237 - 12-2002
- Tarauds court, à machine et à main. - NF ISO 529 - 12-1993
- ISO metric threads for general use – Tolerances – Part 1: Principles and fundamentals....
Thesis
- FROMENTIN (G.) - Étude mécanique et technologique du taraudage par déformation : application aux aciers prétraités - . Thèse soutenue le 22 septembre 2004 devant jury à l'ENSAM Cluny http://pastel.paristech.org/archive/00000941/
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