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Manufacturing method of high-speed grinding wheel for flat grinder

A surface grinder and manufacturing method technology, applied in grinding devices, manufacturing tools, grinding/polishing equipment, etc., can solve the problem of large brittleness of grinding wheels, and achieve the effects of improving grinding wheel strength, reducing porosity, and improving atomic activity

Active Publication Date: 2017-08-04
合肥鼎泰精密机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the vitrified bond grinding wheel is brittle and cannot be subjected to severe vibration

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for manufacturing a high-speed grinding wheel for a surface grinder, comprising the following steps:

[0026] (1) Mix silicon dioxide, lithium carbonate, borax, boron oxide, cryolite, calcium carbonate, sodium oxide, aluminum oxide and zirconia in proportion, and after ball milling, heat the pulverized raw materials to 1350°C for melting, and Pour the molten raw material into cold water to cool down and solidify, remove the solid and dry it at 120°C, then wet ball mill it. During the wet ball milling, the weight ratio of raw material, ball, and water is 1:1.5:1.2, and then dry it at 105°C for 8 hours. , get the binding agent;

[0027] (2) Mix and grind white corundum abrasive, brown corundum, black silicon carbide, titanium, chromium, molybdenum and the above-mentioned binders to a particle size of 5mm, and place them in a mold preheated to 270°C under a pressure of 25MPa and a vacuum of Under the condition of 0.4MPa, the temperature was raised to 650°C at 50°...

Embodiment 2

[0030] A method for manufacturing a high-speed grinding wheel for a surface grinder, comprising the following steps:

[0031] (1) Mix silicon dioxide, lithium carbonate, borax, boron oxide, cryolite, calcium carbonate, sodium oxide, aluminum oxide and zirconia in proportion, and after ball milling, heat the pulverized raw materials to 1250°C to melt, and Pour the molten raw material into cold water to cool down and solidify, take out the solid and dry it at 110°C, then wet ball mill. During wet ball milling, the weight ratio of raw material, ball, and water is 1:1.5:1.2, and then dry at 100°C for 5 hours , get the binding agent;

[0032] (2) Mix and grind white corundum abrasive, brown corundum, black silicon carbide, titanium, chromium, molybdenum and the above-mentioned binders to a particle size of 2mm, place them in a mold preheated to 250°C, and place them in a mold with a pressure of 30MPa and a vacuum degree of Under the condition of 0.3MPa, the temperature was raised ...

Embodiment 3

[0035] A method for manufacturing a high-speed grinding wheel for a surface grinder, comprising the following steps:

[0036] (1) Mix silicon dioxide, lithium carbonate, borax, boron oxide, cryolite, calcium carbonate, sodium oxide, aluminum oxide and zirconia in proportion, and after ball milling, heat the pulverized raw materials to 1400°C to melt, and Pour the molten raw material into cold water to cool down and solidify, take out the solid and dry it at 130°C, then wet ball mill. During wet ball milling, the weight ratio of raw material, balls, and water is 1:1.5:1.2, and then dry at 120°C for 10 hours , get the binding agent;

[0037] (2) Mix and grind white corundum abrasive, brown corundum, black silicon carbide, titanium, chromium, molybdenum and the above-mentioned binders to a particle size of 6 mm, and place them in a mold preheated to 300 ° C. Under the condition of 0.5MPa, the temperature was raised to 600°C at 40°C / min, kept at heat for 20 minutes, and then cool...

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Abstract

The invention provides a manufacturing method of a high-speed grinding wheel for a flat grinder, and relates to the field of grinding tools and abrasives. The manufacturing method comprises the following steps that silicon dioxide, lithium carbonate, borax, boric oxide, cryolite, calcium carbonate, sodium oxide, aluminum oxide and zirconium oxide are mixed by a proportion and are milled and crushed, then the crushed raw materials are heated to be molten, the molten raw materials are poured into cold water to be cooled and cured, a solid body is fished out and dried, then wet ball grinding is conducted, and a binding agent is obtained; white corundum abrasives, brown fused alumina, black silicon carbide, titanium, chromium, molybdenum and the above binding agent are mixed, crushed and added into a mold, and high-temperature and high-pressure vacuum molding is conducted; and the molded grinding wheel is subjected to thermal treatment and then the grinding wheel is obtained. The grinding wheel manufactured according to the manufacturing method has the advantages of being high in grinding efficiency, low in abrasion, wide in application range and capable of performing high-speed grinding.

Description

technical field [0001] The invention relates to the field of abrasive tools and abrasives, in particular to a method for manufacturing a high-speed grinding wheel for a surface grinder. Background technique [0002] Grinding wheel, also known as bonded abrasive, is a bonded abrasive with a certain strength that consolidates ordinary abrasives into a certain shape (mostly round, with a through hole in the center) by a bond. It is generally composed of abrasives, binders and pores. These three parts are often called the three elements of bonded abrasives. According to different classifications of bonds, the common ones are ceramic (bond) grinding wheels, resin (bond) grinding wheels, and rubber (bond) grinding wheels. Grinding wheel is the most widely used type of grinding tool. It rotates at high speed when used, and can be used for rough grinding, semi-finishing and Fine grinding as well as grooving and parting off etc. [0003] In recent years, with the rapid development...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D18/00B24D3/04
CPCB24D3/04B24D18/0009
Inventor 周承志
Owner 合肥鼎泰精密机械有限公司
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