Patent ID: 9028009
Filing Date: 2015-05-12
Classification: B23P,E21C,Y10T

Abstract:
1. A pick tool comprising an insert and a steel holder for the insert, the insert comprising a superhard tip joined to a cemented carbide support body having an insertion shank; the steel holder comprising a shaft for connection to a tool carrier, the shaft being configured to inter-engage non-rotationally with the tool carrier, and the steel holder provided with a bore configured for receiving the insertion shank; in which the support body comprises cemented carbide material, the cemented carbide material comprising at least about 1 weight percent and at most about 10 weight percent binder material and grains of metal carbide having a mean size of 0.1 to 3 microns; wherein the volume of the cemented carbide support body is at least about 15 cubic centimeters (cm