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Method for preparing ceramic bond super-hard abrasive tool

A technology of vitrified bond and superhard abrasive tools, which is applied in the direction of grinding/polishing equipment, grinding devices, manufacturing tools, etc. It can solve problems such as complex methods, expand chip space, improve self-sharpening ability, and improve use performance effect

Active Publication Date: 2010-12-15
ADVANCED TECHNOLOGY & MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The same liquid resin is used, and the method is complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 20 parts of vitrified bond (through 200 mesh sieve), 60 parts of diamond (200 / 230 mesh), 10 parts of green silicon carbide (W63), 12 parts of polymer resin ball (150-230 mesh), 5 parts of water glass, Accurately weigh the material with a precision (0.01g) electronic balance, then mix it in a three-dimensional mixer, shape it under a pressure of 80MPa, and fire the dried abrasive block green body in a pit furnace. The temperature is 780°C, and then the surface of the segment is cleaned and bonded to the aluminum substrate with epoxy resin adhesive. After trimming and sharpening, dynamic balancing, and centrifugal experiments, the finished product of vitrified bond superhard abrasive tools can be obtained after passing the test, which meets the requirements of customers. Its internal pores are spherical closed pores, the pore diameter is mainly distributed between 60 and 100 μm, and the porosity rate is 37.12%. The product is mainly used for grinding cemented carbide.

Embodiment 2

[0054] Use 25 parts of vitrified bond (through 200 mesh sieve), 55 parts of diamond (W40), 17 parts of green silicon carbide (W14), 9 parts of polymer resin ball (230-270 mesh), 5 parts of water glass, and use precision ( 0.01g) electronic balance to accurately weigh the material, then mix it in a three-dimensional mixer, shape it under a pressure of 100MPa, and burn the dried abrasive block green body in a well-type furnace. The firing temperature of the block is 760 ℃, and then clean the surface of the segment, and bond it to the aluminum substrate with epoxy resin adhesive. After trimming and sharpening, dynamic balancing, and centrifugal experiments, the finished product of vitrified bond superhard abrasive tools can be obtained after passing the test, which meets the requirements of customers. Its internal pores are spherical closed pores, the pore diameter is mainly distributed between 40 and 80 μm, and the porosity rate is 35.01%. The product is mainly used for semi-fin...

Embodiment 3

[0056] Use 28 parts of vitrified binder (passed through 200 mesh sieve), 60 parts of CBN (W20), 12 parts of brown corundum (W5), 8 parts of polymer resin ball (270-400 mesh), 5 parts of water glass, and use precision (0.01 g) Accurately weigh the material with an electronic balance, then mix it in a three-dimensional mixer, shape it under a pressure of 120MPa, and burn the dried abrasive segment green body in a well-type furnace, and the firing temperature of the segment is 740°C , and then clean the surface of the segment, and bond it to the threaded steel substrate with epoxy resin adhesive. After trimming and sharpening, the finished vitrified bond superhard abrasive tool can be obtained after passing the inspection, which meets the customer's requirements. Its internal pores are spherical closed pores, the pore diameter is mainly distributed between 30-70μm, and the porosity rate is 34.34%. The product is mainly used for precision grinding of the inner hole of the engine f...

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Abstract

The invention relates to a method for preparing a ceramic bond super-hard abrasive tool, which comprises the following steps of: mixing ceramic bond, super-hard abrasive (diamond and cubic boron nitride), filler (common abrasive such as corundum, silicon carbide and the like) and pore-forming agent, adding temporary bond into the mixture, uniformly filling the mixture into a molding mold, molding the mixture under the pressure of 60 to 200MPa, and preparing the ceramic super-hard abrasive tool with pores by the processes of drying, roasting, surface treatment, adhesion, modification and shaping treatment and detection. The ceramic super-hard abrasive tool comprises the following components in part by weight: 40 to 75 parts of super-hard abrasive, 30 to 10 parts of filler, 30 to 15 parts of ceramic bond, 3 to 10 parts of temporary bond and 5 to 15 parts of pore-forming agent, wherein the pore-forming agent is macromolecular resin spherical granules (one of acrylic resin, polyimide resin and solid phenolic resin); and the roasting is step temperature-controlled burning. The ceramic super-hard abrasive tool has the advantages of good pore-forming effect, good pore adjustability, novelty and environmental protection, no toxin or harm, and convenience for use and popularization.

Description

technical field [0001] The invention relates to a method for preparing an abrasive tool, which belongs to the field of porous grinding and polishing tools, in particular to a method for preparing a ceramic superhard abrasive tool using polymer resin ball particles as pore-forming agents. Background technique [0002] Pores are one of the three elements of vitrified bond superabrasives. During the grinding process of the grinding wheel, they have the functions of chip containment, chip removal and enhanced heat dissipation, which directly affect the grinding effect of the workpiece. [0003] Among them, the pore diameter and pore size distribution are important parameters of the abrasive tool pores. Controlling the pore size can improve the performance of porous ceramics, thereby optimizing the strength and porosity, which can not only prolong the service life of abrasive tools, but also improve the use effect. A variety of preparation processes have been successfully develo...

Claims

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Application Information

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IPC IPC(8): B24D18/00
Inventor 刘一波刘伟杨德涛徐晓伟叶宗春黄盛林赵刚陈哲
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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