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Method for making abrasive tool with cooperative arrangement of abrasive particles by brazing

A kind of abrasive, abrasive grain technology, applied in the field of high temperature brazing

Inactive Publication Date: 2017-08-29
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coordinated brazing of two abrasives is rarely reported

Method used

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  • Method for making abrasive tool with cooperative arrangement of abrasive particles by brazing
  • Method for making abrasive tool with cooperative arrangement of abrasive particles by brazing
  • Method for making abrasive tool with cooperative arrangement of abrasive particles by brazing

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Taking the circular saw blade carrier with a diameter of 230mm as an example, its arrangement and brazing process are as follows:

[0047] The first step is to ultrasonically clean the diamond and cubic boron nitride respectively in a mixed solution of acetone and absolute ethanol, and dry them for later use. The volume ratio of acetone and ethanol used is 1.5:1; organic solvents such as gasoline are used to Clean the steel matrix on the outer edge of the saw blade, sandblast the brazing surface of the steel matrix on the outer edge of the circular saw blade after drying, clean the surface of the steel matrix on the outer edge of the circular saw blade with acetone, and dry it for later use;

[0048] The second step, according to the volume ratio of the pressure-sensitive adhesive and acetone is 1:1, configure the adhesive, mix and stir evenly, and apply the adhesive evenly on the surface of the steel substrate at the outer edge of the circular saw blade, with a thicknes...

Embodiment 2

[0053] The thickness of bonding agent described in the second step is 0.15mm; In the 4th step, the brazing filler metal particle size range is 220 orders, and the brazing filler metal thickness scope covered can be 45% of abrasive grain average size; Heating rate is 10°C / min; the selection range of the brazing temperature can be 880°C; the selection range of the holding time can be 15min; the rest are the same as in Embodiment 1.

Embodiment 3

[0055] The thickness of bonding agent described in the second step is 0.35mm; In the 4th step, the brazing filler metal particle size range is 100 orders, and the brazing filler metal thickness range covered can be 90% of the average size of the abrasive particle diameter; Brazing temperature The selection range can be 950 DEG C; The heating rate is 20 DEG C / min, and the cooling rate is 20 DEG C / min; the selection range for the heat preservation time can be 30min; all the other are the same as embodiment 1.

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Abstract

The invention discloses a method for manufacturing an abrasive tool with abrasive particle collaborative configuration by virtue of brazing, which comprises the following steps: 1) carrying out pretreatment on abrasive materials and a steel substrate; 2) smearing binder onto the surface of the steel substrate uniformly; 3) configuring two kinds of abrasive materials on the surface of the binder according to a corresponding geometric structure; 4) covering the surroundings of the abrasive materials with brazing filler metal, putting into a vacuum furnace, heating at a high temperature, and cooling so as to obtain the abrasive tool. According to the method, diamond and cubic boron nitride are preferably adopted as abrasive materials for manufacturing the brazing tool with abrasive material collaborative configuration by virtue of high-temperature brazing; the excellent thermal expansion performance of the brazing filler metal (Ag-Cu-Ti brazing filler metal and Cu-Sn-Ti brazing filler metal) is utilized to make up the thermal expansion difference of the steel substrate, the alloy brazing filler metal and the abrasive materials, the brazed connection of the abrasive materials and the steel substrate is successively realized, and the application field of the brazing abrasive tool is broadened.

Description

technical field [0001] The invention discloses a method for making abrasive tools by high-temperature brazing of brazing filler metal, in particular using Ag-Cu-Ti brazing filler metal and Cu-Sn-Ti brazing filler metal to realize the brazing connection of two kinds of cooperatively arranged abrasive materials on a steel substrate The method belongs to the technical field of high temperature brazing. Background technique [0002] According to processing theory, the processing performance of abrasive tools is determined by two aspects: one is the ability of the abrasive grains to carry loads, that is, the strength of the abrasive and the ability of the bond to hold the abrasive; the other is the shape of the abrasive grains. It is critical for single-layer bonded abrasive tools. [0003] In recent years, high-temperature brazing abrasive tools have made great progress. It is a kind of nickel-based, silver-based, and copper-based brazing abrasives using brazing filler metals, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D18/00
CPCB24D18/0072
Inventor 肖冰刘思幸张子煜段端志徐风雷王波
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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