CN102814760A - Grinding wheel and preparation method thereof - Google Patents

Abstract

The invention discloses a grinding wheel and a preparation method of the grinding wheel. The grinding wheel comprises the following components by weight: 18-22% of phenolic resin power, 8-12% of phenolic resin liquid, 37-45 parts of carborundum, 18-22% of brown corundum, 4-6% of silicon carbide and 4-6% of alumina. The formula of the grinding wheel is reasonable, alumina and silicon carbide are used as padding, the preparation method is simple, the abrasive resistance and service life of the prepared grinding wheel are excellent, and the content of sulfur dioxide generated in the processing process is reduced.

Description

A kind of emery wheel and preparation method thereof

Technical field

The present invention relates to a kind of emery wheel, be specifically related to a kind of emery wheel and preparation method thereof.

Background technology

The porous grinding utensil that emery wheel is made up of abrasive material, bond and filler; It is widely used in fields such as mechanical metallurgy, building, military project, construction of railways, is mainly used in the cutting and the polishing of common metal materials such as steel pipe, shaped steel, reinforcing bar, at present; The lubricant of emery wheel mainly is to adopt troilite; Its main component is a ferrous disulfide, at high temperature is easy to generate sulfur dioxide, causes the seriously polluted of environment.

Summary of the invention

The object of the present invention is to provide a kind of emery wheel and preparation method thereof.

The present invention adopts following technical scheme:

Emery wheel, the percentage by weight of its constitutive material is: phenol-formaldehyde resin powder 18-22%, liquid phenolic resin 8-12%, diamond dust 37-45%, brown corundum 18-22%, carborundum 4-6% and aluminium oxide 4-6%.

Emery wheel, the percentage by weight of its constitutive material is: phenol-formaldehyde resin powder 20%, liquid phenolic resin 10%, diamond dust 40%, brown corundum 20%, carborundum 5% and aluminium oxide 5%.

The preparation method of emery wheel may further comprise the steps:

(1) percentage by weight by constitutive material takes by weighing each raw material, diamond dust, brown corundum, carborundum and aluminium oxide is joined in the mixer stir, and adds phenol-formaldehyde resin powder and the phenolic resins liquid mixture that has stirred again, and it is stirred;

(2) mould of the raw material that stirs according to different size fed intake, putting 1/3 raw material earlier and putting the sheet of throwing the net,, adding remaining raw material putting 1/3 raw material putting the sheet of throwing the net;

(3) filled mould is carried out press molding, hold up polishing with the aluminium dish then;

(4) the oven dry of the emery wheel of compression moulding, obtain finished product at last.

Advantage of the present invention:

Prescription of the present invention is reasonable, adopts aluminium oxide and carborundum as filler, and the preparation method is simple, and the emery wheel wearability of processing is strong, and long service life has reduced the content of sulfur dioxide that is produced in the process simultaneously.

The specific embodiment

Embodiment 1: emery wheel, the percentage by weight of its constitutive material is: phenol-formaldehyde resin powder 20%, liquid phenolic resin 10%, diamond dust 40%, brown corundum 20%, carborundum 5% and aluminium oxide 5%.

The preparation method of emery wheel may further comprise the steps:

(1) percentage by weight by constitutive material takes by weighing each raw material, diamond dust, brown corundum, carborundum and aluminium oxide is joined in the mixer stir, and adds phenol-formaldehyde resin powder and the phenolic resins liquid mixture that has stirred again, and it is stirred;

(2) mould of the raw material that stirs according to different size fed intake, putting 1/3 raw material earlier and putting the sheet of throwing the net,, adding remaining raw material putting 1/3 raw material putting the sheet of throwing the net;

(3) filled mould is carried out press molding, hold up polishing with the aluminium dish then;

(4) the oven dry of the emery wheel of compression moulding, obtain finished product at last.

Abrasive grain of the present invention is 120-150#, operating rate 40-60m/s, and color and luster is a sepia, toughness is big, is adapted to grind the higher metal of tensile strength, like carbon steel, steel alloy, wrought iron, hard bronze.

Claims (3)

1. an emery wheel is characterized in that the percentage by weight of its constitutive material is: phenol-formaldehyde resin powder 18-22%, liquid phenolic resin 8-12%, diamond dust 37-45%, brown corundum 18-22%, carborundum 4-6% and aluminium oxide 4-6%.

2. emery wheel according to claim 1 is characterized in that the percentage by weight of its constitutive material is: phenol-formaldehyde resin powder 20%, liquid phenolic resin 10%, diamond dust 40%, brown corundum 20%, carborundum 5% and aluminium oxide 5%.

3. the preparation method of emery wheel as claimed in claim 1 is characterized in that may further comprise the steps:

(1) percentage by weight by constitutive material takes by weighing each raw material, diamond dust, brown corundum, carborundum and aluminium oxide is joined in the mixer stir, and adds phenol-formaldehyde resin powder and the phenolic resins liquid mixture that has stirred again, and it is stirred;

(2) mould of the raw material that stirs according to different size fed intake, putting 1/3 raw material earlier and putting the sheet of throwing the net,, adding remaining raw material putting 1/3 raw material putting the sheet of throwing the net;

(3) filled mould is carried out press molding, hold up polishing with the aluminium dish then;

(4) the oven dry of the emery wheel of compression moulding, obtain finished product at last.