Method of blasting cutting tool inserts

US6132293A · kind A · utility

Assignee

• SANDVIK AB · SE

Inventors

• Peter Littecke · Huddinge, SE
• Anders Jonsson · Bromma, SE

Key dates

• Filing date: Jun 16, 1993
• Grant date: Oct 17, 2000
• Expiry date: Jun 16, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method of removing the binder phase from the surface of a hard material body consisting of hard constituents in a binder phase based on cobalt and/or nickel and with a binder phase enriched surface zone is disclosed. By carrying out a blasting process using particles with a size of 400-1500 mesh, a favorable combination of even removal of the cobalt layer, essentially no damage to the carbide grains and reasonable blasting time is obtained.