Preparation method of low melting point aluminum-boron-silicon glass ceramic bond for CBN (Cubic Boron Nitride) grinding tool

A technology of vitrified bond and low-melting glass, which is applied in the field of preparation of CBN abrasive grain (preparation of CBN abrasive tool) bond, which can solve problems such as abrasive grain shedding, large cracks, and reduced service life of grinding wheel, and achieve convenient crystallization control , low thermal expansion coefficient, and low softening temperature

Inactive Publication Date: 2013-11-20
XI AN JIAOTONG UNIV
View PDF4 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the CBN abrasive tool produce thermal stress between the abrasive and the bond during the preparation and use of the CBN abrasive tool, resulting in cracks and the appearance of large cracks, which reduces

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of low melting point aluminum-boron-silicon glass ceramic bond for CBN (Cubic Boron Nitride) grinding tool
  • Preparation method of low melting point aluminum-boron-silicon glass ceramic bond for CBN (Cubic Boron Nitride) grinding tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention adopts conventional chemical raw materials and conventional molten water quenching method to prepare, under the premise of ensuring that the melted glass has a lower softening temperature, by adjusting the B in the glass composition 2 o 3 and Na 2 O, K 2 O, Li 2 The mass percentage content of oxides such as O and B 2 o 3 The molar ratio of the alkali metal oxide makes the lithium-aluminosilicate glass not only have a low softening temperature, but also have low thermal expansion coefficient and high mechanical strength and other superior properties; at the same time, when used as a glass-ceramic bond for CBN abrasive tools, through the Sintering and heat preservation above the softening temperature can precipitate fine spodumene crystallites, further reduce the thermal expansion coefficient of the glass and improve the mechanical strength of the glass at the same time, so as to achieve the purpose of improving the processing performance of CBN ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a preparation method of a low melting point aluminum-boron-silicon glass ceramic bond for a CBN (Cubic Boron Nitride) grinding tool. The glass ceramic bond with uniform components can be obtained by taking oxides such as 55-70% of SiO2, 5-20% of Al2O3, 5-15% of B2O3, 3-7.5% of Na2O, 0.1-2% of K2O, 1-6% of Li2O, 1-3% of ZnO, 0.5-2% of CaO, 0.5-2% of MgO and the like as raw materials for melting the glass ceramic bond and using a high temperature melting and water quenching method. Boron oxide and sodium oxide are added into the raw materials to reduce the softening temperature of the bond, and meanwhile, a proper amount of lithium oxide is added to ensure that low-expansion spodumene crystals are separated out in the bond sintering process, so that the thermal expansion coefficient of the glass ceramic bond is reduced, and the mechanical strength and chemical stability of the glass ceramic bond are improved. Compared with the traditional glass ceramic bond for the grinding tool, the bond provided by the invention has the advantages of low melting and softening temperatures and convenience in crystallization control; and the prepared glass ceramic bond has a lower thermal expansion coefficient and higher chemical stability and mechanical strength.

Description

technical field [0001] The manufacturing technology of the abrasive bonding agent of the present invention particularly relates to a preparation method of the bonding agent for CBN abrasive grains (preparing CBN abrasive tools). Background technique [0002] The remarkable feature of CBN (cubic boron nitride) abrasive grains is high hardness, which is second only to diamond. It has excellent processing performance of iron group materials and is widely used in the field of grinding. All kinds of CBN grinding tools are widely used in machining, metal material forming grinding and precision machining and other fields. Abrasive tools prepared with CBN abrasive grains have the following advantages: high metal grinding efficiency, large grinding ratio, good wear resistance, good self-sharpening, high machining accuracy of the workpiece surface during fine grinding, and relatively high performance during profile grinding. High grinding efficiency, good surface processing quality. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C03C10/12
Inventor 杨建锋杨兴化白建光刘艳王波鲍崇高李春芳
Owner XI AN JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap