Self-lubricating wheel

A grinding wheel and grinding wheel technology, applied in abrasives, metal processing equipment, manufacturing tools, etc., can solve the problems of large loss, workpiece grinding burns, and thermal damage of cubic boron nitride abrasive grains.

Inactive Publication Date: 2013-12-04
RITEDIA CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this prior proposal does not improve the lubrication effect of the grinding wheel, so when the grinding wheel grinds the workpiece, the strong frictional force between the grinding wheel and the workpiece will cause high-temperature adhesion between the surface of the workpiece and the grinding wheel, which will cause grinding burns on the workpiece; The high temperature generated by cutting can also easily make the cubic boron nitride abrasive grains susceptible to thermal damage, which will lead to accelerated grinding passivation, large loss and shortened service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The self-lubricating grinding wheel of a preferred embodiment of the present invention can be used for the grinding and polishing of cut glass, and it includes: 60wt% phenolic resin is the base material, and 30wt% silicon carbide (30 microns to 60 microns in particle size) is the abrasive , 7wt% hexagonal boron nitride and 3wt% cryolite are additives; then, the formula is mixed, and then mechanical equipment is used to continuously stir for 10 minutes until uniform to make a grinding wheel blank; after that, the grinding wheel blank is placed in a heating furnace, At a heating temperature of 200°C, vacuum sintering is continued at this temperature for 60 to 90 minutes, so that the base material, abrasives and additives are hardened and shaped, and finally, quenched and returned to temperature, and the shaped grinding wheel is taken out of the heating furnace; in this embodiment, Because the grinding wheel contains hexagonal boron nitride, it can provide better lubricity ...

Embodiment 2

[0020] The self-lubricating grinding wheel of another preferred embodiment of the present invention can be used for the grinding and polishing of metal moulds, and it comprises: the aluminum oxide and silicon carbide mixed powder of 55wt% is base material, the cubic boron nitride of 15wt% (particle size 40 Micron) as abrasive, 2wt% acrylic resin as binder, and various additives, for example, 8wt% hexagonal boron nitride (particle size is 9 microns), 5wt% graphite, 10wt% polyurethane and 5wt% Silica powder; after that, mix the formula, and then use mechanical equipment to continue stirring for 10 minutes until it is uniform to make a grinding wheel blank; after that, place the grinding wheel blank in a heating furnace at a heating temperature of 1050 ° C for 60 minutes Vacuum sintering is carried out to harden the base material, abrasives and additives. Finally, quench and return to temperature, and take out the formed grinding wheel from the heating furnace. In this embodiment,...

Embodiment 3

[0022] The self-lubricating grinding wheel of another preferred embodiment of the present invention has the same composition and content as that of the first embodiment, except that the hexagonal boron nitride used can be chemically modified and modified hexagonal boron nitride , so that the hexagonal boron nitride additive and the phenolic resin substrate have better uniform dispersion and bonding strength, thereby providing better lubricity on the surface of the grinding wheel and better surface flatness of the ground glass. In this embodiment, the surface modification of hexagonal boron nitride is to immerse hexagonal boron nitride in high temperature (about 80°C to 120°C) strong acid solution (sulfuric acid, nitric acid, hydrochloric acid or hydrofluoric acid), and keep stirring for 24 After 48 hours, the modified hexagonal boron nitride containing alkoxy or epoxy groups on the surface is formed. On the other hand, in this embodiment, the particle size and concentration (u...

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Abstract

The present invention relates to a self-lubricating wheel, comprising: a substrate, a binding agent, an abrasive and an additive, wherein the total content of the substrate is at least 55 weight percent by weight, and the binding agent, the abrasive and the content of the additive is less than 45 weight percent of the total weight. Thus, self-lubricating wheel of the invention can be mixed with additives to provide lubrication between the grinding wheel and the workpiece, and improve the flatness of the surface of the workpiece.

Description

technical field [0001] The invention relates to a self-lubricating grinding wheel, in particular to a self-lubricating grinding wheel suitable for grinding glass cutting surfaces. Background technique [0002] The general grinding wheel is made by mixing abrasives and binders through pressing, drying, and roasting, and loose disc-shaped, wheel-shaped and other abrasive tools. Generally, the common grinding wheel is a circular bonded abrasive tool with a through hole in the center made of abrasives and binder resin. Rough grinding, semi-finishing and fine grinding as well as grooving and cutting of various types of surfaces. [0003] Chinese Publication Patent No. CN 102059659 has disclosed a resin cubic boron nitride (cBN) end face grinding wheel abrasive layer formula system, in which graphite, cryolite, Silica, and the removed chromium trioxide, the binder still uses phenolic resin, thus providing a grinding wheel with high hardness, high toughness and high adhesion of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/28B24D3/34
Inventor 林逸樵宋健民
Owner RITEDIA CORPORATION
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