Molybdenum iron boron ternary metal-ceramic alloy vacuum sintered friction welding boring bit

Abstract

The invention relates to a molybdenum iron boron ternary alloy metal-ceramic boring bit. According to the molybdenum iron boron ternary alloy metal-ceramic boring bit, molybdenum, iron, boron and other nonmetallic substances are matched on an iron-based matrix in a certain ratio, and a ternary alloy metal-ceramic iron-based matrix with good toughness and abrasion resistance is obtained by superfine treatment and vacuum sintering; and the ternary alloy metal-ceramic iron-based matrix and the molded alloy structure steel form a boring bit for a blast furnace tapping machine or a spherical sheet tooth boring bit for mines by friction welding, namely forming a novel boring tool. The molybdenum iron boron ternary alloy metal-ceramic boring tool is the novel boring tool researched by Hubei Jiayu Pipe Industry Co., Ltd. and Wuhan University of Technology together, and is widely applied to blast furnace tapping holes of steel companies and rock advancement of mines. The boring bit has light weight, low price and high cost performance, and saves a large amount of precious tungsten metal resources.

Description

Technical field [0001] The invention relates to a drill bit, in particular to a molybdenum-iron-boron ternary cermet alloy vacuum sintered friction welding drill bit. Background technique [0002] At present, under the severe wear of rocks, the erosion of high-pressure water (air) flow and the corrosion of pit water, the drill bits of blast furnace opening machines and the ball-toothed drill bits for mines are subjected to tension, compression, bending, twisting and rock drilling at 2000 per minute. -9000 times of high-frequency impact, each impact rate is as high as 50-500 joules, and often fails by methods such as stress corrosion fatigue fracture. The drill bit is a consumable tool with the harshest stress conditions and the shortest service life among all human mechanical tools. It is a necessary high-tech consumable tool for basic industries. "Plan" (NADET plan), believes that drilling and mining technology plays a key role in the basic industrial sectors that provide ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings that the existing drill bits cannot bear the tension, compression, bending, torsion and high-frequency impact during the working process for a long time, and often fail by methods such as stress corrosion fatigue fracture, the invention provides a molybdenum-iron-boron ternary alloy metal Ceramic drill bit, the drill bit is placed on the iron matrix by matching molybdenum, iron, boron and other non-metallic substances in a certain proportion, and after ultra-fine treatment and vacuum sintering, a three-dimensional material with good toughness and wear resistance is obtained. Elemental alloy cermet iron matrix matrix; then the obtained ternary alloy cermet iron matrix matrix and the processed alloy structural steel are welded by friction welding technology for the production of blast furnace open hole machine drill bits and spherical tooth drill bits for mines