Conferences

Consolidation of Nonconducting Abrasive Cutting Tools

M.Luchka,
   
V.Kindrachuk
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2014, #05/06
http://www.materials.kiev.ua/article/1226

Abstract

Conditions for cladding of diamond and superhard macropowders with composite electrolytic coatings have been studied. The coating characteristics are established to depend on the pretreatment, electrolyte concentration, current density, and deposition duration. The optimal coating layer 120 150 µm in thickness is produced at a current density of 2.5 3 kА/m2. Conditions for the fabrication of composite materials involving diamond-like clad powders are examined using filed-associated sintering. It is shown that current density and heating rate are the determining factors. The composite material reaches the optimal properties at a current density of 8.28 • 106 А/m2 and with total sintering time no more than 120 sec. Tools made from the developed composite materials can be used in granite and marble processing. The operability of composite materials produced from clad superhard diamond macropowders is higher than that of materials from a mixture of cobalt and diamond powders.


CLADDING, CUTTING TOOLS, GALVANIC POWDER STRENGTHENING, MACROPOWDERS, SINTERING