PM Tool Materials: The Influence of Physical-Mechanical Properties of Binder on Exploitation Characteristics of Diamond Wheels for Dry Cutting

• Published in: European Congress and Exhibition on Powder Metallurgy. European PM Conference Proceedings Vol. 3; p. 1
• Main Authors: Vitiaz, P A, Baran, A A, Zvonariov, E V
• Format: Conference Proceeding
• Language: English
• Published: Shrewsbury The European Powder Metallurgy Association 01.01.2004

The aim of the work is to determine dependencies of exploitation characteristics (diamond consumption, cutting productivity) of diamond wheels for dry cutting on physical-mechanical properties of a binder. As a result of investigations the ranges of changing of bending strength (σ^sub b^), impact strength (KCU) and hardness (HRB) depending on compounding of the binder Fe-Ni-Mn-Cu-Sn are determined. The general tendency of binder exploitation characteristics changing is determined. The grow of the investigated properties values leads to decreasing of diamonds consumption at some decreasing of instrument productivity. The last fact is connected with the decreasing of composite self-sharpening ability in the process of cutting. The range of changing of σ^sub b^ amounted to 630-1170 MPa, KCU 3,6-10,3 J/cm^sup 3^, HRB =60-110. It is shown that the developed binder ensures better machinability in the conditions of hard concrete dry cutting. During cutting of concrete side-walk tile the productivity amounted to 170-205 cm^sup 2^/min, diamond consumption is 0,8-1,0 carat/m^sup 2^. The increasing of diamond tool productivity is achieved by cladding of diamond powders by carbide-forming elements. [PUBLICATION ABSTRACT]