CN1260334A

CN1260334A - Formulation of special-purpose abrasive block for grinding and polishing vitrifacted brick and stone material, and its manufacture method

Info

Publication number: CN1260334A
Application number: CN 99116008
Authority: CN
Inventors: 黄崧基
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-01-12
Filing date: 1999-01-12
Publication date: 2000-07-19

Abstract

The formula of the abrasive brick comprises silicon carbide and ceramic adhesive made up by mixing Al2O3, SiO2, Fe2O3, MgO, K2O, Na2O, TiO2 and CaO, and its preparation method includes the following steps: mixing all ingredients of said adhesive mixing the obtained mineral mixture with silicon carbide, die-pressing or injection moulding, drying and high-temp. sintering so as to obtain the invented finished product. It features high abrasive resistnace, high temp. resistance and long service life.

Description

Vitreous brick and special-purpose abrading block prescription and the manufacture method thereof of stone grinding polishing

The present invention relates to a kind of abrading block prescription and manufacture method thereof that is used for vitreous brick and stone grinding polishing.

At present; in building material industry, vitreous brick and stone material are carried out the employed abrading block of grinding and polishing; its prescription is normally by the requirement of polishing precision; choose the order number of silicon carbide; mix with the silicon carbide 15%-65% of this order number and binding agent 85-15% then and make, used binding agent generally is a magnesia cement.Wherein, the Chemical Composition of magnesia cement by weight (following ratio, per-cent all are meant weight ratio except that other has indicating) is: the MgCl of the MgO of 40-80 part and 35-75 part concentration 28-35% ₂The MGSO of solution, 3-6 part concentration 28-33% ₄The compositions such as CaO of the FeO of solution, 0.5-2.5 part, 3-9 part.For example will make the order number and be 120 abrading block can be by following weight ratio preparation: 75 parts MgO, 60 parts of concentration are 33% MgCl ₂The MgSO of solution, 4 parts of concentration 30% ₄Solution, 1.5 parts FeO, 6 parts CaO make then with after 40 parts silicon carbide mixes.The abrading block that adopts this prescription to make is used to add man-hour, because its wear resistance, thermotolerance are all very poor, easy to wear, its work-ing life is all very short, generally has only about 90-360 minute.When carrying out grinding and polishing in enormous quantities, owing to need the frequent abrading block of changing, increased the cost of process for processing greatly and reduced production efficiency, be difficult for guaranteeing the quality of polishing simultaneously, special in the occasion of working continuously in enormous quantities, its shortcoming is more remarkable.The abrading block of this prescription; its manufacture method comprises: at first; getting the raw materials ready of binding agent and silicon carbide; binding agent is mixed into magnesia cement by each components contents; and then and silicon carbide be mixed into abrasive material; through the mould injection forming, after condensing, promptly obtain the abrading block of vitreous brick and stone grinding polishing usefulness again.

The purpose of this invention is to provide and a kind ofly have high-wearing feature, high heat resistance and be exclusively used in the vitreous brick and the prescription of the abrading block of stone material series grinding and polishing and the manufacture method of this abrading block.

For achieving the above object, the prescription of abrading block of the present invention is: by the polishing accuracy requirement, choose the order number of silicon carbide, mix with the silicon carbide 15%-65% of this order number and binding agent 85%-35% then and make, described binding agent is to use vitrified bond, this vitrified bond uses following mineral composition: potassium felspar sand and albite, clay, quartz, kaolin, talcum, Wingdale, through mixing, grind, sieving resulting mixture, its Chemical Composition and content are: the Al of 5-30% ₂O ₃, 30-75% SiO ₂, 0.2-1% Fe ₂O ₃, the MgO of 0.5-3%, the K of 3-20% ₂O and Na ₂The TiO of O, 0.5-1.5% ₂And the CaO of 1-4%, wherein K ₂O and Na ₂O can use simultaneously or use separately.

In order to obtain the abrading block of the present invention's prescription, its manufacture method is: at first, according to the requirement of polishing precision, choose the order number of silicon carbide, and then with the silicon carbide of this order number by weight 15%-65% and vitrified bond 85%-35%, be stirred into compound abrasive; Secondly, abrasive material punching press or slip casting in mould are become the abrading block of different shape, and be dried to water content less than 2%; At last, high temperature sintering, temperature is 900-1400 ℃.

Be applicable to the usefulness of vitreous brick and stone material series grinding and polishing with the fill a prescription abrading block made of the present invention.

The present invention is described in further detail below in conjunction with embodiment.

Embodiment 1:

Vitrified bond makes according to following mineral composition: get 28% clay, 29% potassium felspar sand and albite (wherein potassium felspar sand and albite can use simultaneously or use separately), 29% quartz, 38% kaolin, 2% talcum, 1% Wingdale, earlier with their each self-grinds, screening, through thorough mixing, obtain the mixture of water ratio 11%, wherein water ratio 6-12% preferably.Content through the Chemical Composition of the above-mentioned vitrified bond that makes is: 16% Al ₂O ₃It is 5-30%, 70% SiO preferably ₂It is 30-75%, 0.8% Fe preferably ₂O ₃It is its preferably 0.5-3%, K of 6% of 0.2-1%, 0.95% MgO preferably ₂O its preferably 3-30%, Na of 4% ₂O its preferably 3-30%, TiO of 0.6% ₂It is its 1-4% preferably of 0.5-1.5% and 1.2% CaO preferably.Above-mentioned Chemical Composition can be chosen arbitrarily in allowed band, and is little to the result of use influence of vitrified bond.

Choose 120 purpose silicon carbide 43% then, be mixed together with the above-mentioned vitrified bond that makes 57% again, through being stirred into compound abrasive, abrading block with abrasive material punching press or slip casting rectangularity or other different shape and specification size in mould, be dried to water content again less than 2%, use 1200-1220 ℃ high temperature sintering at last, can obtain requiring the abrading block of the present invention of 120 purpose grinding and polishing precision.

Embodiment 2:

Choose 24 purpose silicon carbide 65%, be mixed together with the vitrified bond that makes as embodiment 1 35% again, through being stirred into compound abrasive, abrading block with abrasive material punching press or slip casting rectangularity or other different shape and specification size in mould, be dried to water content again less than 2%, use 1350-1370 ℃ high temperature sintering at last, can obtain requiring the abrading block of the present invention of 24 purpose grinding and polishing precision.

Embodiment 3:

Choose 600 purpose silicon carbide 15%, be mixed together with the vitrified bond that makes as embodiment 1 85% again, through being stirred into compound abrasive, abrading block with abrasive material punching press or slip casting rectangularity or other different shape and specification size in mould, be dried to water content again less than 2%, use 1150-1170 ℃ high temperature sintering at last, can obtain requiring the abrading block of the present invention of 600 purpose grinding and polishing precision.

Remove the foregoing description, the present invention can also utilize different high temperature sinterings by choosing the silicon carbide and the content of different meshes such as 24-800, obtains to satisfy the serial abrading block of vitreous brick and the different grinding and polishing precision of stone material.

Adopt the abrading block of above-mentioned prescription and manufacture method gained, through evidence, be used for vitrified tile and stone grinding During polishing, have high-wearing feature, high-fire resistance characteristics, be 480-1500 minute service time, compares equal conditions The common abrading block of lower use can improve 4-10 its service life doubly, and production cost is again suitable, and is so just big Reduced greatly the vitrified tile of process unit's area and the cost of stone material, saved the time of frequent abrading block, carried The efficient of high production and processing and crudy, thus economic benefit improved, producing line grinding throwing in enormous quantities When light vitrified tile and stone material, its benefit is more remarkable. Simultaneously, abrading block of the present invention also has antiacid, alkali resistant, anti-Water-soluble, intensity high.

Claims

1. the special-purpose abrading block prescription of vitreous brick and stone grinding polishing; it is by the polishing accuracy requirement; choose the order number of silicon carbide; silicon carbide 15%-65% and binding agent 85%-35% with this order number is mixed and made into then; it is characterized in that: described binding agent is a vitrified bond; this vitrified bond uses following mineral composition: potassium felspar sand and albite, clay, quartz, kaolin, talcum, Wingdale; through mixing, grind, sieving resulting mixture, its Chemical Composition and content are: the Al of 5-30% ₂O ₃, 30-75% SiO ₂, 0.2-1% Fe ₂O ₃, the MgO of 0.5-3%, the K of 3-30% ₂O and Na ₂The TiO of O, 0.5-1.5% ₂And the CaO of 1-4%, wherein K ₂O and Na ₂O can use simultaneously or use separately.

2. abrading block according to claim 1 is characterized in that: this abrading block is applicable to the usefulness of vitreous brick and stone material series grinding and polishing.

3. the manufacture method of the special-purpose abrading block of vitreous brick and stone grinding polishing; requirement according to the polishing precision; choose the order number of silicon carbide; the silicon carbide of using this order number then is by weight 15%-65% and vitrified bond 85%-35%; be stirred into compound abrasive, abrasive material punching press or slip casting in mould become the abrading block of different shape, and are dried to water content less than 2%; it is characterized in that: high temperature sintering, temperature are 900-1400 ℃.

4. abrading block according to claim 3 is characterized in that: this abrading block is applicable to the usefulness of vitreous brick and stone material series grinding and polishing.