Methods of applying hardfacing

摘要

A multi-layer film for use in forming a layer of hardfacing on a surface of a tool includes a first layer and a second layer covering at least a portion of a surface of the first layer. The layers each include a polymer material and a plurality of particles dispersed throughout the polymer material. An intermediate structure includes a body of an earth-boring tool, a first material layer disposed over a surface of the body, and a second material layer disposed over the first material layer. A method of applying hardfacing includes providing a first material layer on a surface of a body of an earth-boring tool, providing a second material layer adjacent the first material layer, heating the body and removing the polymer material from the body of the earth-boring tool, and heating the body of the earth-boring tool to a higher temperature to form a layer of hardfacing material.

主权项

1. A method of applying hardfacing to a surface of an earth-boring tool, comprising:
disposing an at least substantially solid preformed multi-layer film over a surface of a body of an earth-boring tool, the multi-layer film comprising:
a first material layer comprising a plurality of hard particles dispersed throughout a first polymer material; anda second material layer comprising a plurality of metal matrix particles dispersed throughout a second polymer material adjacent the first material layer;wherein the first material layer is in contact with the surface of the body; heating the body of the earth-boring tool to a first temperature while the multi-layer film is on the body of the earth-boring tool and removing the first polymer material and the second polymer material from the body of the earth-boring tool; and heating the body of the earth-boring tool to a second temperature higher than the first temperature and sintering at least the plurality of metal matrix particles to form a layer of hardfacing material on the surface of the body of the earth-boring tool comprising the plurality of hard particles dispersed throughout a metal matrix phase formed from the plurality of metal matrix particles.