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A vitrified bond, vitrified disc and preparation method thereof

A ceramic bond and grinding disc technology, which is applied in grinding/polishing equipment, abrasives, grinding devices, etc., can solve the problems of complex design and manufacture of grinding wheels, less research on grinding effects, low durability of grinding discs, etc., to improve self-sharpening. performance, reduce material costs, and improve durability and longevity

Active Publication Date: 2019-09-10
ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The low durability and short life of the grinding disc are directly related to the performance of the bond
At present, many literatures propose to add various reinforcing materials to the vitrified bond for reinforcement, but there are different opinions on what kind of reinforcing material and what kind of bonding agent to add, mainly because the specific grinding effect is seldom studied.
In addition, the single / double end surface low-speed grinding method of the large diameter grinding disc is different from the traditional plane, cylindrical grinding and narrow ring wide end surface grinding. Overlap and cross, the design and manufacture of the grinding wheel is more complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] A method for preparing a vitrified bond grinding disc, comprising the following steps:

[0023] (1) Mix vitrified bond with whiskers, then add CBN or diamond, white corundum and mix evenly, use resin liquid or dextrin liquid as wetting agent, press molding, the pressing pressure is 10-20MPa, and the pressing time is 10s;

[0024] (2) The molded product obtained in step (1) is sintered and solidified at 600-700°C for 2 hours, and the obtained grinding layer is bonded to the grinding wheel base by epoxy resin;

[0025] (3) After uniformly mixing silicon carbide, wollastonite, graphite and thermosetting resin, casting at 50°C on the grinding wheel substrate bonded with the grinding layer obtained in step (2), and then grinding and processing.

Embodiment 1

[0027] Vitrified bond grinding disc, including grinding layer and filling layer, the grinding layer is composed of the following raw materials in volume percentage: 800# cubic boron nitride 30%, 300# white corundum 20%, 5-10μm vitrified bond 15 %, 3.5% aluminum borate whiskers with an aspect ratio of 4:1, and the balance is a wetting agent; the filling layer is composed of the following raw materials in volume percentage: 10-12μm silicon carbide 40%, 5-6μm graphite 20% , 30-32μm wollastonite 10%, thermosetting resin 30%; wherein, the ceramic bond is composed of the following raw materials in parts by weight: SiO 2 60 copies, B 2 o 3 20 copies, Al 2 o 3 15 copies, Li 2 O 4 parts, Bi 2 o 3 7 copies, P 2 o 5 10 parts, TiO 2 1.0 parts, Sb 2 o 5 0.5 servings.

[0028] The preparation method of the vitrified bond grinding disc of the present embodiment comprises the following steps:

[0029] (1) Mix vitrified bond with aluminum borate whiskers, then add CBN and whi...

Embodiment 2

[0034] Vitrified bond grinding disc, including grinding layer and filling layer, the grinding layer is composed of the following raw materials in volume percentage: 180# diamond 45%, 400# white corundum 22%, 10-30μm vitrified bond 13%, long Potassium titanate whiskers with a diameter ratio of 5:1 are 4%, and the rest is a wetting agent; the filling layer is composed of the following raw materials in volume percentages: 25-30μm silicon carbide 60%, 8-10μm graphite 15%, thermosetting Resin 25%; Wherein, vitrified agent is made up of each raw material of following weight part: SiO2 36 copies, B 2 o 3 22 parts, Al 2 o 3 20 copies, Li 2 O 3 parts, Bi 2 o 3 6 copies, P 2 o 5 12 parts, TiO 2 0.7 parts, Sb 2 o 5 2 servings.

[0035] The preparation method of the vitrified bond grinding disc of the present embodiment comprises the following steps:

[0036] (1) Mix vitrified bond with potassium titanate whiskers, then add diamond and white corundum, mix evenly in a thr...

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Abstract

The invention discloses a ceramic bonding agent, a ceramic bonding agent abrasive disk and a preparation method of the ceramic bonding agent abrasive disk. The ceramic bonding agent comprises, by weight, 20-60 parts of SiO2, 10-30 parts of B2O3, 5-20 parts of Al2O3, 3-6 parts of Li2O, 6-15 parts of Bi2O3, 5-20 parts of P2O5, 0.2-1.5 parts of TiO2 and 0.5-2 parts of Sb2O5. A grinding layer of the ceramic bonding agent abrasive disk is composed of, by volume percentage, 5-50% of cubic boron nitride (CBN) or diamond, 5-40% of white corundum, 5-30% of the ceramic bonding agent and 3-5% of whiskers. The boron, aluminum and phosphorus silicate ceramic bonding agent disclosed by the invention has the good liquidity and tensile strength, can well infiltrate and control a grinding material, and has a good cutting capacity; the whiskers are added into the ceramic bonding agent, the strength of the ceramic bonding agent is increased, the grinding durability is improved, the hardness of the bonding agent is reduced, self-sharpening performance of a grinding tool is improved, and accordingly the durability of a grinding wheel is improved and the service life of the grinding wheel is prolonged. Efficient grinding on various steel materials is achieved through the synergistic effect of the CBN, the white corundum, the silicon carbide, wollastonite and the graphite, and high durability is achieved.

Description

technical field [0001] The invention belongs to the field of abrasive tool manufacture, and in particular relates to a ceramic bond, a ceramic bond grinding disc and a preparation method thereof. Background technique [0002] Double-end face grinding is to use two oppositely placed grinding wheels to grind the two end faces of the workpiece at the same time. It is mainly used for grinding the two end faces of discs, sleeve parts or sheet parts. It is the most effective method for finishing the end faces of flat workpieces. one. The vitrified bonded grinding wheel for double-end grinding has a large market and broad application prospects. In actual production and application, due to the surface contact between the grinding wheel and the workpiece during double-face grinding, the contact area is relatively large, and more grinding heat and chips are generated, which is prone to scratching the workpiece, fast passivation of the grinding wheel, and low service life. question. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D18/00B24D3/14B24D3/34
Inventor 郜永娟苏鸿良刘权威
Owner ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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