The Prototex® Eco Plus from the competence brand Walter Prototyp really stands out among through-hole taps. Above all, this is due to their universal application combined with outstanding performance. Thanks to new manufacturing techniques, Walter AG has succeeded in further optimising this multi-talented tool.
Like the Paradur® Eco Plus – its counterpart for blind-hole threads – the Walter Prototyp Prototex® Eco Plus has a wide field of application. This tool, which is designed specifically for through-hole threads up to 3.5xD, is manufactured from HSS-E-PM. It can be used for components of steel (ISO-P), stainless materials (ISO-M) up to 1350 N/mm2 , cast iron workpieces (ISO-K), especially GJS/GGG, and non-ferrous metals (ISO-N), for example, AL wrought alloys, AlSi alloys with up to 12% Si content, and Cu wrought alloys or pure copper. Such versatility means that this tool is of interest to all machining sectors. In other words, in companies that have a wide range of products, this all-rounder can, if necessary, reduce tool changes on the machine and reduce the range of tools that are held in stock.
A new, special type of pre-treatment for the cutting tool material results in an improved surface which, in turn, leads to improved adhesion of the THL hard material coating. This results in a considerable increase in performance and in a significantly longer tool life. “Tests showed increases of between 25 and 60 percent, depending on the application,” explains Timo Mager, Senior Product Manager for threading tools at Walter. An optimised geometry in the chamfer section also increases process reliability. This characteristic is extremely important because thread cutting is often the final operation when machining a workpiece, which may have had many other costly operations.
Walter emphasises the versatility of the tap is by offering numerous different designs, e.g. in terms of cooling and lubricating it can be supplied with internal cooling and a radial coolant outlet; TiN coating is available as an alternative to the THL hard material coating; a left-hand version is available as are the four tolerance classes 6HX, 6GX, 2B and G-X. A number of thread profiles and sizes are available for delivery, including Metric threads M2 to M30, metric fine threads M6x0.75 to M22x1.5, inch threads G1/8 to G1, along with UNC and UNF variants. Manufacturers may also benefit from the possibility of using the tool with minimum quantity lubricant.
Source Walter Tools