Abrasive wheel containing nickel coated needle-shaped cubic boron nitride particles

• US 4,008,055 A
• Filed: 02/28/1975
• Issued: 02/15/1977
• Est. Priority Date: 03/07/1974
• Status: Expired due to Term

• Current Assignee: Cornelius Phaal
• Original Assignee: Cornelius Phaal
• Inventors: Phaal, Cornelius
• Primary Examiner(s): Arnold, Donald J.
• Application Number:
  US05/554,121
• Time in Patent Office: 718 Days
• Field of Search: 51/298, 51/307, 51/308, 51/309, 51/295
• US Class Current: 51/298
• CPC Class Codes: B24D 11/00 Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
• CPC Class Codes: B24D 18/00 Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
• CPC Class Codes: B24D 7/00 Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
• CPC Class Codes: B24D 99/00 Subject matter not provided for in other groups of this subclass
• CPC Class Codes: C09K 3/1409 Abrasive particles per se preparation of diamond C01B32/25
• CPC Class Codes: C09K 3/1445 the coating consisting exclusively of metals

Abstract

This invention provides an abrasive product, which can be for use in or form part of an abrasive tool, comprising a bonding matrix, preferably resin, containing needle-shaped cubic boron nitride particles so aligned that their long axes are substantially normal to the working face of the product.

Claims

1. A grinding wheel comprising a hub portion and a peripheral grinding portion, the peripheral grinding portion comprising a resin matrix selected from phenolformaldehyde and polyimide resins containing nickel coated needle-shaped cubic boron nitride particles, each particle having a long axis and a transverse short axis, the nickel coating comprising from 30 to 80 weight percent of the coated particle and a substantial portion of the particles being so aligned that their long axes are substantially normal to the working face of the grinding portion.