Composite sacrificial components

摘要

A method of preparing a mountable sacrificial component and a resulting wear tip or back up tip for a mineral breaker is disclosed. The steps include positioning within a mould at least one hard transition metal carbide mass, then filing the mould about the transition metal carbide mass(es) with either molten spheroidal graphite iron or molten nickel chromium alloy cast iron and removing the resulting composite molding from the mould (whether by mould destruction or otherwise). The resulting component provides metallurgical bond between transition metal carbide mass(es) and the iron containing mass. The wear tip or back up tip for a mineral breaker has at least one hard transition metal carbide containing shaped body at least fully embedded by casting an spheroidal graphite iron or nickel chromium alloy cast iron matrix as a metallurgically bonded metal carrier for the body or bodies and adapted, in use, by virtue of its to be mounted position with respect to the loci of mineral piece movement, to erode in part to reveal a sacrificial surface area of the carbide containing shaped body or bodies to subsequently be eroded by mineral pieces in use.