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Cutting Inserts comes in geometries for cast iron machining.

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Cutting Inserts comes in geometries for cast iron machining.
Cutting Inserts comes in geometries for cast iron machining.

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January 16, 2014 - Intended for machining ISO K (cast iron) materials, Tiger•tecŪ SilverŪ RK5 and RK7 geometries have CVD coating and plateau step. Latter enables location face to be ground after coating. Evenly ground faces ensure seating with optimal stability, which minimizes cutting edge wear and promotes tool life and process reliability. While RK5 flat top insert suits cast iron roughing operations, RK7 insert suits heavy, interrupted cuts; large depth-of-cut variations; and hard cast skin.
Original Press Release

Walter USA, Inc.
N22 W23855 Ridgeview Pkwy. W.
Waukesha, WI, 53188
USA





Walter Adds Two New Geometries to its Tiger·TecŪ Silver Insert Lineup in Order to Boost Productivity and Increase Tool Life in Cast Iron Machining


The latest additions to the Tiger•tecŪ SilverŪ line, the RK5 and RK7 geometries, join the MK5 to enhance cutting speed and reliability.

Waukesha, WI – Walter has added two new geometries to its line of high-performance Tiger•tecŪ Silver inserts. Tiger•tec Silver, with its advanced CVD coating, is designed to enhance cutting speed, reliability and tool life, and the new RK5 and RK7 geometries bring these advantages to the machining of ISO K (cast iron) materials and join the MK5 universal geometry already available.

A key feature of the new geometries is their plateau step between the location face and the cutting edge. This step enables the location face to be ground after coating, something that is not possible to do with standard inserts without a chipbreaker groove. The resulting uneven location face on standard inserts can lead to micro-vibrations and chipping at the cutting edge. By contrast, the evenly ground faces of the new Walter inserts ensures that they can be seated with maximum stability. As a result, cutting-edge wear is reduced, tool life enhanced, and process reliability increased, particularly in cases of high dynamic loads.

The RK5 (“classic”) for cast iron roughing operations is a classic flat top insert without chipgroove and delivers the advantages of speed, reliability and longer tool life, particularly in the machining of grey cast iron. RK7 (“robust”) is an extremely robust insert for very heavy interrupted cuts, large depth-of-cut variations causing uneven material removal, and hard cast skin. Its geometry is similar to the RK5’s, but it also has a protective chamfer on the cutting edge. It is also suitable for the hard/soft machining of hardened steels with hardness from 40-62 HRC, for which CBN inserts are not suitable in many cases. The existing Walter MK5 (“universal”) geometry is suitable for medium machining of all cast iron workpieces. It has an open chipbreaker groove for a soft cutting action, and is especially well suited for machining ductile cast iron, unstable components, or internal machining with low cutting pressure.

Enhancing the performance advantages of the new geometries are two Tiger•tec Silver grades, WKK10S and WKK20S, both of which can be used on grey cast iron, ductile cast iron and compacted  graphite cast iron (CGI). WKK10S is the harder of the two, with high wear resistance and high cutting speed. It is primarily used for grey cast iron and is suitable for continuous cuts through to light interrupted cuts, and excels in dry machining. WKK20S, a universal cutting grade, is suitable for around 50 percent of all tasks, can be used for both wet and dry machining, and offers high process reliability particularly for workpieces with interrupted cuts, cast skin or cross holes. Ductile cast iron is its primary application.

Walter offers an extensive line up of cutting tools for milling, drilling, turning, boring and specialized tooling for unique applications through its competence brands Walter Valenite, Walter Titex and Walter Prototyp. As well as multi-level service programs through its Walter Multiply brand. Headquartered in Waukesha, Wisconsin the company has a strong network of distributors and field engineers across their subsidiaries in the USA, Canada, Mexico, Brazil and Argentina. The Walter name is synonymous with productivity, thanks to more than 90 years of developing cutting tools and inserts that set new standards in quality, innovation and production.

For more information about
WKK10S_RK5 Tiger•tec SilverŪ:
Scan this QR code or
go to http://goo.gl/t0V7i

For more information about
WKK10S_RK7 Tiger•tec SilverŪ:
Scan this QR code or 
go to http://goo.gl/YqSN5
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