Spaenaur Catalog 14

Hand / Machine Taps Information Information sur les tarauds machine / manuels

Inch Pouce

Tap Terminology Terminologie de taraud

SURFACE TREATMENT When choosing lubricant and type of tap to suit a particular application, the life of the tap can be further prolonged by selecting the correct surface treatment.

1. BRIGHT FINISH (BF) - SPAENAUR carries Bright Finish in stock. This is a ground finish without any further surface treatment. Used mainly for non-ferrous metals or

steels which do not cold weld. 2. STEAM TEMPERED (ST)

This is an oxide treatment which is recognizable by its deep blue/black finish. This treatment produces tiny pitmarks on the surface of the tap, too small to be seen with the naked eye. These indentations help to capture and retain the lubricant, thus reducing torque and discouraging cold welding. Used in a wide variety of applications where build-up can cause problems, e.g. mild steel and all highly alloyed ferrous materials, including stainless steels. Machine taps are supplied with a Steam Tempered finish, unless an alternative is specified. The following taps are available upon request, price on application: 3. NITRIDED (NI) This treatment hardens the surface of the tool and gives it a mottled grey/black finish. This extra skin hardness gives better tool life in the more abrasive shorter-chipping materials such as cast iron and certain types of bronze, high Si aluminum alloys and plastic. This treatment can cause brittleness and should be used with care. 4. DOUBLE TREATMENT (DT) This combination of Steam Tempering and Nitriding is used mainly for nut taps and taps for special application where the qualities of abrasion resistance and lubrication adherence are most beneficial. 5. TITANIUM CARBIDE NITRIDE (TIN) A Physical Vapour Deposition (PVD) process imparting a shiny golden finish to the tool surface. Features are high surfaces hardness (equivalent to RC80-85) with good abrasion resistance allowing for prolonged tool life. A low coefficient of friction results in reduced torque, temperature and cold welding, thus allowing for greater tool speeds. 6. TITANIUM CARBIDE NITRIDE (TICN) Another PVD process imparting a harder surface than TIN. Suitable for abrasive applications and for high tensile materials.

P

P

P

CATALOG 14

P53

P: 1-800-265-8772 F: 1-888-252-6380 www. F: 1-888-252-6380 service@spaenaur.com © 2018 Spaenaur Inc. All rights reserved. Catalog may not be reproduced, in whole or in part, without the written permission of Spaenaur Inc. Subject to Catalog Terms and Conditions of Use available at Spaenaur.com and on page TC2 and TC3 at the back of this catalog. © 2018 Spaenaur Inc. Tous droits réservés. Le catalogue ne peut être reproduit, en tout ou en partie, sans l’autorisation écrite de Spaenaur Inc. L’utilisation est soumise aux Conditions d’utilisation du Catalogue disponibles sur Spaenaur.com et à la page TC4 et TC5 à la fin de ce catalogue. .com 19 jan 2018