CN103771839A

CN103771839A - Aluminum oxide ceramic nut and manufacturing process thereof

Info

Publication number: CN103771839A
Application number: CN201410034078.5A
Authority: CN
Inventors: 吴正良; 夏锡平; 卢怀; 夏美华
Original assignee: Yixing City Shi Hua Environmental Protection Co Ltd
Current assignee: Yixing City Shi Hua Environmental Protection Co Ltd
Priority date: 2014-01-24
Filing date: 2014-01-24
Publication date: 2014-05-07

Abstract

The invention discloses an aluminum oxide ceramic nut and a manufacturing process thereof. The aluminum oxide ceramic nut mainly comprises the following components in percentage by weight: 90-95 percent of aluminum oxide, 1-5 percent of talc powder, 1-5 percent of Suzhou soil and 0.5-1 percent of silicon dioxide. The aluminum oxide is ground and crushed to prepare paste, and the paste is moulded by hot pressure casting, and is fired at a high temperature of 1600 DEG C. The aluminum oxide ceramics nut is high in strength, corrosion-resistant, convergent-divergent which is the same as that of a corundum exposure head, and difficult to loosen and drop during operation.

Description

A kind of alumina-ceramic nut and manufacturing process thereof

Technical field

The present invention relates to nut preparation field, specifically a kind of alumina-ceramic nut and manufacturing process thereof.

Background technology

Existing GYQ type ball-type corundum micropore aerator is all made up of ceramic shell, plastic screw, plastic cap nut, rubber gasket, the shortcoming existing is that ceramic shell, plastic screw, plastic cap nut, rubber gasket are combined by three kinds of unlike materials, it shrinks, expands inconsistent, cause easy loose or dislocation in the time of operation, affect the normal operation of sewage disposal.

Summary of the invention

The invention provides a kind of alumina-ceramic nut and manufacturing process thereof, solved due to material difference, it shrinks, expands inconsistent, causes the easy loose or dislocation of nut in the time of operation, affects the normal operation of sewage disposal.

A kind of alumina-ceramic nut of the present invention, mainly comprises following component and weight percent:

Aluminium sesquioxide 90%-95%

Talcum powder 1%-5%

Suzhou soil 1%-5%

Silicon-dioxide 0.5%-1%.

A manufacturing process for alumina-ceramic nut, this technique comprises the following steps:

1) take said components and carry out proportioning;

2) component good step 1) proportioning is carried out to the ball milling of 30-36 hour;

3) ball milling complete after, add the paraffin of 10%-16% to mix;

4) mixture of step 3) is heated, heating and temperature control is at 65-75 degree Celsius, and under pressure, injects metal die moulding, cooling after wax slurry solidifies the demoulding take out the base substrate of forming;

5) base substrate, through suitably finishing, imbeds in sorbent material and adopt the heating of 1580-1620 celsius temperature to carry out dewaxing treatment, and then dewaxing blank sintering becomes end article.

Beneficial effect of the present invention is:

The present invention through milling pulverizing, makes starchiness by aluminum oxide powder, through hot die-casting molding, then burns till through 1600 ℃ of high temperature, and this product strength is high, corrosion-resistant, and convergent-divergent is identical with corundum aeration head, is difficult for loose or dislocation when operation.

Embodiment

Embodiment 1

Aluminium sesquioxide 90%

Talcum powder 1%

Suzhou soil 1%

Silicon-dioxide 0.5%;

1) take said components and carry out proportioning;

2) component good step 1) proportioning is carried out to the ball milling of 30 hours;

3) ball milling complete after, add 10% paraffin to mix;

4) mixture of step 3) is heated, heating and temperature control is at 65 degrees Celsius, and under pressure, injects metal die moulding, cooling after wax slurry solidifies the demoulding take out the base substrate of forming;

5) base substrate, through suitably finishing, imbeds in sorbent material and adopt 1580 celsius temperature heating to carry out dewaxing treatment, and then dewaxing blank sintering becomes end article.

Embodiment 2

Aluminium sesquioxide 93%

Talcum powder 3%

Suzhou soil 3%

Silicon-dioxide 0.8%;

1) take said components and carry out proportioning;

2) component good step 1) proportioning is carried out to the ball milling of 33 hours;

3) ball milling complete after, add 13% paraffin to mix;

4) mixture of step 3) is heated, heating and temperature control is at 70 degrees Celsius, and under pressure, injects metal die moulding, cooling after wax slurry solidifies the demoulding take out the base substrate of forming;

5) base substrate, through suitably finishing, imbeds in sorbent material and adopt 1600 celsius temperature heating to carry out dewaxing treatment, and then dewaxing blank sintering becomes end article.

Embodiment 3

Aluminium sesquioxide 95%

Talcum powder 5%

Suzhou soil 5%

Silica 1 %;

1) take said components and carry out proportioning;

2) component good step 1) proportioning is carried out to the ball milling of 36 hours;

3) ball milling complete after, add 16% paraffin to mix;

4) mixture of step 3) is heated, heating and temperature control is at 75 degrees Celsius, and under pressure, injects metal die moulding, cooling after wax slurry solidifies the demoulding take out the base substrate of forming;

5) base substrate, through suitably finishing, imbeds in sorbent material and adopt 1620 celsius temperature heating to carry out dewaxing treatment, and then dewaxing blank sintering becomes end article.

The concrete application approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvement, these improve and also should be considered as protection scope of the present invention.

Claims

1. an alumina-ceramic nut, is characterized in that: mainly comprise following component and weight percent:

Aluminium sesquioxide 90%-95%

Talcum powder 1%-5%

Suzhou soil 1%-5%

Silicon-dioxide 0.5%-1%.

2. a manufacturing process for alumina-ceramic nut as claimed in claim 1, is characterized in that: this technique comprises the following steps:

1) take said components and carry out proportioning;

3) ball milling complete after, add the paraffin of 10%-16% to mix;

5) base substrate, through suitably finishing, is imbedded in sorbent material and is adopted the heat of 1580-1620 degree Celsius to carry out dewaxing treatment, and then dewaxing blank sintering becomes end article.