Manufacture of a metal bonded abrasive product

US5932508A · kind A · utility

Inventors

• Caoimhin Padraig Armstrong · Newbridge, IE
• Patrick Gerard Ryan · Limerick, IE
• Christopher Thomas Peters · Limerick, IE
• Christian Weiss · Celle, DE
• Michael O'Sullivan · Reutte, AT
• Johann Andries Bester · Alberton, ZA
• Martin Walter Powell · Springs, ZA

Key dates

• Filing date: Sep 3, 1997
• Grant date: Aug 3, 1999
• Expiry date: Sep 3, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S76/12
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method of manufacturing a metal bonded abrasive product such as a saw or drill segment or bead for a diamond wire is provided. The method includes the steps of providing a mixture of the metal, in particulate form, and the abrasive particles, cold pressing the mixture to the desired final shape at a pressure in the range 320 to 1500 MPa to produce a cold pressed product at a temperature in the range 900 to 1300.degree. C. under conditions which inhibit degradation of the abrasive particles and the particulate metal. The product, after free sintering, will generally have a relatively high porosity, for example, a porosity of 10 to 25 percent by volume.