MEASURE OF HARDNESS, MICROHARDNESS
One of the tests applied to tungsten carbide inserts and hard-facing materials used for protection of bit legs and milled teeth is measure of hardness and microhardness. Hardness gradient of bit bearings and cones is measured, too. These tests are conducted with advanced measuring equipment and belong to international quality control standards.
Volgaburmash and Uralburmash are Russia’s largest companies producing rock-cutting tools