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US Patent: 8,142,848
Coated Insert for Milling
Patentees:
Andreas Larsson (exact or similar names) - Fagersta, Västmanland County, Sweden
Anna Sandberg (exact or similar names) - Sala, Västmanland County, Sweden

USPTO Classifications:
427/255.11, 427/255.19, 427/255.23, 427/255.28, 427/255.29, 427/255.36, 427/255.391, 427/255.394, 427/419.1, 427/419.2, 427/419.7, 76/44

Tool Categories:
metalworking tools : machinist tools : carbide inserts and holders

Assignees:
Seco Tools AB - Fagersta, Västmanland County, Sweden

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Sep. 22, 2011
Granted: Mar. 27, 2012

Patent Pictures:
USPTO (New site tip)
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Description:
Abstract:

A coated cemented carbide insert is particularly useful for wet or dry milling steels at high cutting speeds, milling of hardened steels, and high feed copy milling of tool steels. The insert is formed by a cemented carbide body including WC, NbC and TaC, a W-alloyed Co binder phase, and a coating including an innermost layer of TiC.sub.xN.sub.yO.sub.z, with equiaxed grains, a layer of TiC.sub.xN.sub.yO.sub.z with columnar grains and a layer of .alpha.-Al.sub.2O.sub.3.

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