Iron-based bonding alloy for preparing diamond drill bit matrix

Abstract

The invention discloses an iron-based bonding alloy for preparing a diamond drill bit matrix, relating to a manufacturing technology of petroleum drilling bits. The iron-based bonding alloy contains the following components in percentage by weight: 4-6 percent of silver, 15-20 percent of tin, 8-12 percent of manganese, 10-15 percent of nickel and the balance of ferrum. The iron-based bonding alloyhas the advantages that the strength of the drill bit matrix can be improved by over two times and the cost of the bonding alloy is lower than 20 percent of a conventional bonding alloy.

Description

technical field [0001] The invention relates to the manufacturing technology of diamond drill bits used in oil drilling operations. In particular, it relates to iron-based alloy materials for sintered drill body. Background technique [0002] Chinese Invention Patent Publication No. CN101153363 discloses a "preparation method for polycrystalline diamond compact drill matrix", in which the drill matrix is ​​made by sintering 40% matrix material and 60% bonding alloy. Bonding alloys consist of tin, manganese, nickel and copper. The disadvantage of the drill matrix made of copper-based bonding alloy is its low strength, and the high manufacturing cost of the alloy leads to high cost of the drill matrix. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide another iron-based bonding alloy with lower cost for preparing the diamond bit matrix. [0004] The iron-based bonding alloy...

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of drill matrix made of copper-based bonding alloy is low strength, and the high cost of manufacturing the alloy leads to high cost of the drill matrix