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Efficient silicon carbide corundum rare earth ceramic composite grinding wheel and manufacture method thereof

A composite technology of silicon carbide corundum and ceramics, which is applied in the field of abrasives and abrasive tools, can solve the problems of not being able to adapt to the grinding processing requirements of new difficult-to-grind materials, and achieve the effect of improving high-temperature wettability and broad market prospects

Inactive Publication Date: 2012-09-26
FUZHOU SHUANGYI GRINDING WHEEL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-efficiency silicon carbide corundum rare earth ceramic composite grinding wheel and its manufacturing method to solve the problem that the existing single abrasive ordinary vitrified bond grinding wheel cannot adapt to the grinding processing requirements of new difficult-to-grind materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Calcination: Weigh 75% green silicon carbide and 25% white corundum and mix them together and put them into the calcination furnace, keep warm for 2 hours after reaching 900°C according to the heating curve, cool naturally to 200°C, and use a 30-mesh screen sieve.

[0025] 2) Ball milling: Mix rare earth cerium oxide, clay, feldspar, talc, and boron glass in proportions of 5.2:32:55:3.8:4, put them into a ball mill for 8 hours, and pass through a 320-mesh sieve.

[0026] 3) Mixing: Put the materials in step 1) and step 2) together with dextrin and 30% dextrin aqueous solution at 78 wt%, 16.3 wt%, 1.2 wt%, 4.5 wt%, and put them into the mixer for mixing For 35 minutes, pass through an 8-mesh sieve.

[0027] 4) Molding: Calculate the molding unit weight according to the different hardness of the grinding wheel and the molding density corresponding to the organization number, weigh the materials mixed in step 3) and put them into the corresponding mold according to the...

Embodiment 2

[0034] 1) Calcination: Weigh 30% green silicon carbide and 70% single crystal corundum and mix them together into the calciner, heat it for 2 hours after reaching 900°C according to the heating curve, cool naturally to 200°C, and use a 60-mesh sieve mesh sieve

[0035] 2) Ball milling: put rare earth cerium oxide, clay, feldspar, talc, and boron glass into a ball mill in a ratio of 6:22:55:5:12 and mill for 8 hours, and pass through a 320-mesh sieve.

[0036] 3) Mixing: Put the materials in step 1) and step 2) together with dextrin and 10% PVA aqueous solution in proportions of 81.5 wt%, 13.5 wt%, 1.5 wt%, and 3.5 wt%, and put them together in a mixer for mixing Cook for 32 minutes and pass through a 10-mesh sieve.

[0037] 4) The molding pressure is 30MPa, the holding time is 10 seconds, the mold is unloaded and the blank is taken out.

[0038] All the other operating steps are the same as in Example 1.

[0039] The main performance index of the product obtained is as fol...

Embodiment 3

[0042] 1) Calcination: Mix green silicon carbide and chrome corundum in a ratio of 75:25 and put them into a calcination furnace. After reaching 900°C according to the heating curve, keep the heat for 2 hours, cool naturally to 200°C, and pass through a 36-mesh sieve. .

[0043] 2) Ball milling: Put the rare earth cerium oxide, clay, feldspar, talc, and boron glass in a ratio of 5.5:31:55:4:4.5 into a ball mill for 8 hours and pass through a 320-mesh sieve.

[0044] 3) Mixing: Put the materials of step 1) and step 2) together with dextrin and 30% dextrin aqueous solution in proportions of 78 wt%, 15.3 wt%, 1.7 wt% and 5 wt%, and put them into the mixer together Mix for 35 minutes and pass through a 10-mesh sieve.

[0045] 4) 4. Molding: The pressure is 25MPa, the holding time is 7 seconds, the mold is unloaded and the blank is taken out.

[0046] All the other operation steps are with embodiment 1

[0047] The main performance index of the product obtained is as follows:

...

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Abstract

The invention relates to an efficient silicon carbide corundum rare earth ceramic composite grinding wheel which comprises the following raw materials in percentage by weight: 30-75wt percent of silicon carbide abrasive, 25-70wt percent of corundum abrasive, 12-22wt percent of rare earth ceramic and 3.5-8wt percent of normal-temperature binding agent. The composite grinding wheel is manufactured by the steps of calcining, ball-milling, blending, moulding, drying, sintering, and the like. The grinding wheel of the invention has the advantages of high grinding force for grinding a difficult grinding material, sharp grains, high self sharpening, shedding in time of blunt grinding grains and no burning on workpieces. Compared with the traditional single grinding material common ceramic binding agent grinding wheel, the efficient silicon carbide corundum rare earth ceramic composite grinding wheel obviously improves the grinding efficiency; and compared with a grinding wheel adopting an expensive superhard grinding material (artificial diamond or CBN (Cubic Boron Nitride)), the efficient silicon carbide corundum rare earth ceramic composite grinding wheel obviously reduces the grindingcost and has wider adaptation and favorable economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of abrasive materials, and more specifically relates to a high-efficiency silicon carbide corundum rare earth ceramic composite grinding wheel and a manufacturing method thereof. Background technique [0002] Abrasives are known as industrial teeth and are an indispensable and important part of the national economy, especially the equipment manufacturing industry. Grinding is an important one of the "Four Diamonds" mechanical processing methods of "turning, washing, planing, and grinding". Grinding is also the most precise of the four processing methods. Today's advanced manufacturing industry relies on grinding The higher and higher degree, also promotes the rapid development of the grinding wheel industry, the product variety, output, and quality are constantly increasing and improving, and the market demand has increased significantly. [0003] There are many kinds of abrasives, which are divided accordi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/565C04B35/10C04B35/622
Inventor 郑春和郑小勇郑顺伟李金林林群
Owner FUZHOU SHUANGYI GRINDING WHEEL
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