Insert for milling of cast iron

US8142621B2 · kind B2 · utility

Assignee

• Seco Tools AB · SE

Inventors

• Andreas Larsson · Kalmar, SE
• Tommy Larsson · Ludvika, SE
• Jon Andersson · Karlskrona, SE

Key dates

• Filing date: Sep 22, 2011
• Grant date: Mar 27, 2012
• Expiry date: Sep 22, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/265
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A coated cemented carbide insert is particularly useful for milling of cast iron, methods for making the insert, and methods of their use are disclosed. The insert is formed by a composition of the substrate of about 5-7 wt % Co, about 0.05-20 wt % total amount of the metals selected from the group consisting of Ti, Nb, Ta and combination thereof, and balance WC with a coercivity (Hc) of 1 about 4-19 kA/m and an S-value of about 0.81-0.96. The coating includes a homogeneous layer of (TixAl1-x)N, where x is between about 0.25 and abut 0.50 with a crystal structure of NaCl type and a total thickness of between about 1.0 and about 5.0 μm as measured on the middle of the flank face.