METHOD OF PRODUCING WORK LAYER OF ABRASIVE TOOL MADE FROM SUPER HARD MATERIAL POWDERS Russian patent published in 2010 - IPC B24D18/00 

FIELD: process engineering.

SUBSTANCE: invention relates to abrasive processing and can be used in production of abrasive tools with diamond powder grains, cubic boron nitride and other super hard materials and binder based on metal powders representing submicron and nanopowders. Mix material comprising super hard material powders and metal binder are placed into mould. Mix material cold briquetting is performed and, then elevated-temperature compaction till preset porosity is made by appropriate tools. Said tools represent a rod with end face bearing surface. Rod is revolved and brought in contact with briquetting shaft at force that allows penetration into said shaft. Rod is transferred over the surface of said mix material. Depth of rod penetration, revolution and transfer speeds are selected to provide friction heat generation for producing plasticated zone in contact area.

EFFECT: reduced time of holding grains of super hard material at increased temperatures, efficient use of small grain size powders and reduced power consumption.

7 cl, 4 dwg