Coated inserts for rough milling

a technology of cemented carbide and cutting tool, applied in the direction of metallic material coating process, chemical vapor deposition coating, turning machine accessories, etc., can solve the problems of thermal cracks, chipping and edge fractures, and increasing the tendency to form comb cracks
USRE40082E1Inactive Publication Date: 2008-02-19SANDVIK INTELLECTUAL PROPERTY AB
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
SANDVIK INTELLECTUAL PROPERTY AB
Publication Date
2008-02-19
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

Coated milling insert has a WC—Co cemented carbide with a low content of cubic carbides and a highly W-alloyed binder phase and a coating including an inner layer of TiCxNy with columnar grains followed by a layer of κ-Al2O3 and a top layer of TiN. The coated milling insert is particularly useful for milling of grey cast iron with or without cast skin under wet conditions at low and moderate cutting speeds and milling of nodular cast iron and compacted graphite iron with or without cast skin under wet conditions at moderate cutting speeds.
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Description

CROSS-REFERENCES TO RELATED APPLICATIONS

[0001] The present application is a reissue of U.S. Pat. No. 6,767,583 B2 filed on Aug. 13, 2003, which is a divisional application of U.S. Pat. No. 6,638,609 B2, filed on Oct. 29, 2001, which claims the benefit of priority to Swedish Application No. 0004079-0 filed Nov. 8, 2000.<?insert-end id="INS-S-00001" ?>

[0002] This application is a divisional of application Ser. No. 09 / 984,145, filed on Oct. 29, 2001, now U.S. Pat. No. 6,638,609.

[0003] This application claims priority under 35 U.S.C. §§119 and / or 365 to Application No. 004079-0 filed in Sweden on Nov. 8, 2001, the entire content of which is hereby incorporated by reference.BACKGROUND

[0004] 1. Field of the Invention

[0005] The present invention relates to coated cemented carbide cutting tool inserts, particularly useful for milling of grey cast under wet conditions, preferably at low and moderate cutting speeds but also for milling of nodular cast iron and compacted graphite iron under ...

Claims

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