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Ceramic bond cubic boron nitride abrasive tool and manufacturing method thereof

A technology of ceramic bond and cubic boron nitride, which is applied in the field of abrasive tool manufacturing, can solve problems such as easy fracture, and achieve the effect of improving strength and service life, increasing strength, and being easy to achieve

Inactive Publication Date: 2013-10-16
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The interface combined in this way will become a weak point for crack initiation and propagation during the use of the abrasive tool, and is prone to fracture

Method used

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  • Ceramic bond cubic boron nitride abrasive tool and manufacturing method thereof
  • Ceramic bond cubic boron nitride abrasive tool and manufacturing method thereof
  • Ceramic bond cubic boron nitride abrasive tool and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A vitrified bond cubic boron nitride abrasive tool comprises 45vol% cubic boron nitride cBN abrasive grains, 30vol% vitrified bond, and the rest are pores.

[0028] refer to figure 1 , a method for manufacturing a vitrified bond cubic boron nitride abrasive tool, comprising the following steps:

[0029] Step 1, prepare material by the weight percentage of following component: Al 2 o 3 8%, H 3 BO 3 10%, Na 2 CO 3 10%, K 2 CO 3 3%, Li 2 CO 3 6%, ZnO 2%, CaCO 3 2%, MgO 2%, TiO 2 2%, the balance is Si0 2 , mix the prepared materials evenly;

[0030] Step 2: put the mixed material obtained in Step 1 into an electric furnace for melting and water quenching to obtain a vitrified bond block, the melting temperature is 1200°C, and the melting time is 2 hours;

[0031] Step 3: Crushing, ball milling, sieving, and drying the vitrified bond block to make vitrified bond powder, wherein the ball milling speed is 150r / min, the ball milling time is 10h, the drying tempera...

Embodiment 2

[0038] A vitrified bond cubic boron nitride abrasive tool comprises 40vol% cubic boron nitride cBN abrasive grains, 35vol% vitrified bond, and the rest are pores.

[0039] refer to figure 1 , a method for manufacturing a vitrified bond cubic boron nitride abrasive tool, comprising the following steps:

[0040] Step 1, prepare material by the weight percentage of following component: Al 2 o 3 7%, H 3 BO 3 12%, Na 2 CO 3 10%, K 2 CO 3 3%, Li 2 CO 3 5%, ZnO 2%, CaCO 3 2%, MgO 2%, TiO 2 2%, the balance is Si0 2 , mix the prepared materials evenly;

[0041]Step 2: Put the mixed material obtained in Step 1 into an electric furnace for melting and water quenching to obtain a vitrified bond block, the melting temperature is 1200°C, and the melting time is 2 hours;

[0042] Step 3: Crushing, ball milling, sieving, and drying the vitrified bond block to make vitrified bond powder, wherein the ball milling speed is 150r / min, the ball milling time is 10h, the drying temperat...

Embodiment 3

[0049] A vitrified bond cubic boron nitride abrasive tool comprises 50vol% cubic boron nitride cBN abrasive grains, 25vol% vitrified bond and the rest are pores.

[0050] refer to figure 1 , a method for manufacturing a vitrified bond cubic boron nitride abrasive tool, comprising the following steps:

[0051] Step 1, prepare material by the weight percentage of following component: Al 2 o 3 8%, H 3 BO 3 12%, Na 2 CO 3 8%, K 2 CO 3 3%, Li 2 CO 3 5%, ZnO2%, CaCO 3 2%, MgO2%, TiO 2 2%, the balance is SiO 2 , mix the prepared materials evenly;

[0052] Step 2: put the mixed material obtained in Step 1 into an electric furnace for melting and water quenching to obtain a vitrified bond block, the melting temperature is 1150°C, and the melting time is 3 hours;

[0053] Step 3: Crushing, ball milling, sieving, and drying the vitrified bond block to make vitrified bond powder, wherein the ball milling speed is 150r / min, the ball milling time is 10h, the drying temperature...

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Abstract

The invention discloses a ceramic bond cubic boron nitride abrasive tool and a manufacturing method of the ceramic bond cubic boron nitride abrasive tool. The method comprises preparing materials and mixing, placing mixed materials in an electric furnace for melting, conducting water quenching to prepare ceramic bond blocks, conducting smashing, ball-milling, sieving and drying on the ceramic bond blocks to prepare ceramic bond powder, conducting surface oxidation modified pretreatment on cubic boron nitride (cBN) grains, evenly mixing the ceramic bond powder, the cubic boron nitride (cBN) grains and a pore-forming agent NH4HCO3, obtaining a mixture, adding temporary binding agent polyethylene glycol in the mixture, evenly mixing to obtain abrasive tool raw materials, placing the abrasive tool raw materials in a die, conducting pressing shaping on a pressure machine to prepare an abrasive tool green body, placing the abrasive tool green body in a sintering furnace for sinter molding, and preparing the ceramic bond cubic boron nitride abrasive tool along with cooling of the furnace. The ceramic bond cubic boron nitride abrasive tool improves total strength of the abrasive tool, enables the abrasive tool to be not easy to break in using process, improves using safety of the abrasive tool, and prolongs service life of the abrasive tool.

Description

technical field [0001] The invention belongs to the technical field of abrasive tool manufacture, and in particular relates to a vitrified bonded cubic boron nitride abrasive tool and a manufacturing method thereof. Background technique [0002] In recent years, new machining technologies have developed in the direction of high quality, high precision, high efficiency, low cost, and automation. Superabrasive abrasives are widely used in all aspects of grinding technology due to their advantages of high abrasive hardness, high thermal conductivity and long service life, and become the basis for the progress of grinding technology. Among them, ceramic bonded cubic boron nitride cBN abrasives have been widely used in all aspects of machining because of their high temperature resistance, porosity, durability, easy dressing and excellent grinding performance, and the usage rate is increasing year by year. . [0003] In the traditional vitrified bond cubic boron nitride cBN abra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D3/14C04B35/5831C04B35/622
Inventor 鲍崇高宋弈侨邢建东高义民
Owner XI AN JIAOTONG UNIV
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