CN104999383A - Gear grinding wheel and manufacturing method thereof - Google Patents
Gear grinding wheel and manufacturing method thereof Download PDFInfo
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- CN104999383A CN104999383A CN201510344722.3A CN201510344722A CN104999383A CN 104999383 A CN104999383 A CN 104999383A CN 201510344722 A CN201510344722 A CN 201510344722A CN 104999383 A CN104999383 A CN 104999383A
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- emery wheel
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- roll flute
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
Abstract
The invention discloses a gear grinding wheel and a manufacturing method thereof and belongs to the technical field of grinding wheel manufacturing. The gear grinding wheel is made from, by weight, 65.5-82% of abrasive materials, 8-16.5% of binding agents, 6-13% of pore-forming materials and 4-7% of binders. The abrasive materials are composed of, by weight, 50-90% of white corundum and 10-50% of ceramic microcrystalline abrasive materials. The formula of the gear grinding wheel is simple; all raw materials in the formula coordinate with one another; the strength and the heat dissipation performance of the grinding wheel are improved; grinding efficiency is high; burning cracks are avoided; and the grinding precision can reach the fourth grade to the fifth grade. The manufacturing method of the gear grinding wheel is easy and convenient to operate and easy to control and achieve.
Description
Technical field
The invention belongs to emery wheel manufacturing technology field, be specifically related to a kind of roll flute emery wheel and preparation method thereof.
Background technology
Ceramic microcrystalline abrasive material worm wheel grinding object is saloon car transmission gear, worm abrasion wheel roll flute process technology is the special mill process technology utilizing the theory of engagement between worm abrasion wheel and gear to develop, belong to one of plunge grinding mode, but be different from general form grinding, because the linear velocity difference of tooth root and tooth top position emery wheel is very large, grinding is asynchronous, and the falling speed of abrasive material is different, very easily cause the change of emery wheel profile, therefore the profile of the flank of tooth also changes thereupon.Simultaneously, owing to being curved face contact between the grinding face of emery wheel and the flank of tooth, especially tooth root position, cooling fluid not easily enters, therefore thermal diffusivity is bad, surface of the work is easily burnt, therefore in the urgent need to developing a kind of roll flute emery wheel that operation is simple, ground effect good, security performance is good, production efficiency is high.
Chinese patent CN103862393A discloses a kind of ceramic microcrystalline abrasive material gear grinding emery wheel, comprise center and strengthen part and grinding use part, wherein center strengthens part by WA100#, bonding agent, bonding agent and wetting agent composition, grinding uses part by CA60 ~ 120#, WA60 ~ 120#, bonding agent, binding agent, wetting agent forms, wherein bonding agent is by clay, boron glass and lithium-containing oxides frit composition, the center of the emery wheel of the disclosure strengthens part and milled portion adopts different formulas, formula composition is complicated, manufacturing process is loaded down with trivial details, be unsuitable for industrial application.
Summary of the invention
In order to overcome the defect of prior art, an object of the present invention is to provide formula simple roll flute emery wheel.
Meanwhile, the present invention is also the preparation method providing a kind of roll flute emery wheel.
To achieve these goals, the technical solution used in the present invention is as follows:
A kind of roll flute emery wheel, is made up of the raw material of following weight percentage: abrasive material 65.5% ~ 82%, bonding agent 8% ~ 16.5%, pore creating material 6% ~ 13%, binding agent 4% ~ 7%; Wherein abrasive material is made up of the component of following weight percentage: white fused alumina 50% ~ 90%, ceramic microcrystalline abrasive material 10% ~ 50%.
The granularity of abrasive material directly determines the machining accuracy of emery wheel, usual abrasive grain is less, machining accuracy is higher, but the abrasive material that granularity is little is easy to come off in grinding process, therefore in order to while making emery wheel have high machining accuracy, abrasive material is avoided to come off in grinding process, preferably, the granularity of white fused alumina is 46 ~ 150 orders, and the granularity of ceramic microcrystalline abrasive material is 46 ~ 150 orders.
In above-mentioned roll flute emery wheel, white fused alumina and ceramic microcrystalline abrasive material is adopted to be composite abrasive material, and by adjusting the consumption of each raw material, make mutually to act synergistically between each component, improve the intensity of emery wheel, make the emery wheel of preparation have very high self-sharpening, good shape retention, machining accuracy is high, and durability is high, without burn crackle; And above-mentioned roll flute emery wheel, formula is simple, and raw material is easy to get, and is easy to make.
Above-mentioned bonding agent is made up of the component of following weight percentage: boron glass 20% ~ 40%, feldspar 22% ~ 43%, nepheline powder 10% ~ 35%, clay 5% ~ 13%, lithium carbonate 2% ~ 5%, chrome green 3% ~ 13%.
In order to reduce firing temperature and the refractoriness of bonding agent further, improving bonding agent to the wettability of abrasive material, improving the intensity of emery wheel, and then improving the linear velocity of wheel grinding, preferably, bonding agent average grain diameter D
50it is 12.8 ~ 22.9 μm.
Above-mentioned bonding agent by boron glass, feldspar, nepheline powder, clay, lithium carbonate, chrome green is composite forms, nepheline powder and the composite use of boron glass is added in this bonding agent, reduce the fragility of bonding agent, add chrome green and other components act synergistically simultaneously, improve the intensity of bonding agent, reduce the firing temperature of bonding agent; This bonding agent is good to the wetability of abrasive material, and hold is high, keeps the crystal formation integrality of ceramic microcrystalline abrasive material in emery wheel sintering process, make abrasive material have best ground effect, and emery wheel revolving strength is high, linear velocity can reach more than 63m/s, security performance is good, and grinding efficiency is high.
Above-mentioned bonding agent is prepared by following methods and obtains: concrete operation step is:
A: measure boron glass, nepheline powder, lithium carbonate, chrome green by formula, mix, obtained mixture A;
B: mixture A prepared by heating melting steps a, obtained mixture B;
C: mixture B prepared by shrend step b, obtained mixture C;
D: ball mill crushing after the mixture C drying prepared by step c, crosses 600-800 mesh sieve, obtained mixture D;
E: add feldspar and clay by formula ratio in mixture D prepared by steps d, mix, crosses 600-800 mesh sieve, to obtain final product.
The concrete grammar mixed described in step a is: get after boron glass, nepheline powder, lithium carbonate and chrome green mix by formula that ball milling is even again.
In step b, the concrete grammar of heating and melting is: mixture A is heated in air atmosphere 1200 DEG C ~ 1250 DEG C meltings to complete melting.
Described binding agent is dextrin solution, and dextrin solution is binding agent conventional in emery wheel making process, is specially and is added water the sticking solution of tool be mixed with by dextrin solution.
Described pore creating material is walnut shell.
Add in emery wheel manufacture and use pore creating material to make to form uniform space in emery wheel, for chip removal with store cooling fluid, improve the heat dispersion of emery wheel, what the granule size of pore creating material determined emery wheel organizes fine and closely woven degree.Pore creating material granularity is large, and grinding wheel organization is loose not easily to be blocked, and grinding efficiency is high, but wheel strength is low, easy to wear; Pore creating material granularity is little, and grinding wheel organization is tight, and grinding wheel shape retentivity is good, and hold bits property poor, emery wheel is easily burnt.Therefore, in order to balance intensity and the heat dispersion of emery wheel, the granularity of preferred pore creating material is directly proportional to the granularity of abrasive material, and namely the granularity of pore creating material is 46 ~ 150 orders.
The preparation method of above-mentioned roll flute emery wheel, comprises following operating procedure:
1) be prepared into moulding mixture: by weight percentage composition take abrasive material, binding agent, bonding agent and pore creating material mixing sieve, obtain molding mass;
2) emery wheel blank is prepared: by step 1) molding mass prepared puts into mould, compressing, obtains emery wheel blank;
3) drying steps 2) the emery wheel blank prepared, obtained dry emery wheel blank;
4) sintering step 3) the dry emery wheel blank prepared, to obtain final product.
Step 2) in compressing for after being pressed into given size, release also ejects emery wheel blank.
Step 2) in molding mass put into grinding tool after to scrape smooth laggard row compressing at stand.
Step 3) in baking temperature program be: with 6.75 minutes/degree heating rate, be warming up to 80 DEG C in 9 hours, be incubated 18 hours; Again with 9 minutes/degree heating rate, be warming up to 100 DEG C in 3 hours, be incubated 15 hours; Again with 6 minutes/degree rate of temperature fall, in 7 hours, be down to room temperature.
Preferred drying temperature curve is as follows:
| Cumulative time (h) | 2 | 8 | 9 | 15 | 16 | 26 | 28 | 42 | 48 |
| Arrive temperature (DEG C) | 60 | 60 | 80 | 80 | 80 | 80 | 100 | 100 | Room temperature |
Step 4) in sintering temperature program be: with 1.26 minutes/degree heating rate, be warming up to 600 DEG C by 30 DEG C in 12 hours, be incubated 10 hours; With 1.5 minutes/degree heating rate, be warming up to 1000 DEG C in 10 hours, be incubated 9 hours; Again with 2 minutes/degree rate of temperature fall, in 35 hours, be cooled to 30 DEG C.
Preferred sintering temperature curve is as follows:
Crystallite abrasive material worm screw roll flute emery wheel of the present invention, be that raw material is made by white fused alumina, ceramic microcrystalline abrasive material, bonding agent, binding agent and pore creating material, formula is simple, raw material is easy to get, be convenient to make, and the present invention adopts white fused alumina to mix with ceramic microcrystalline abrasive material is used as abrasive material, both reduces cost, the grinding tool segmental defect in use using single abrasive material can be improved again, improve grinding efficiency and quality; The each raw material of roll flute emery wheel of the present invention acts synergistically in the amount ranges limited simultaneously, and make the emery wheel of preparation have very high self-sharpening, good shape retention, machining accuracy is high, and durability is high, without burn crackle.
The preparation method of roll flute emery wheel of the present invention, easy and simple to handle, be easy to control and realize, and the drying curve of further preferably emery wheel preparation process and sintering curre, improve the institutional framework of emery wheel, improve the grinding performance of emery wheel further.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, but does not form any limitation of the invention.
In following embodiment, dextrin solution is added water by dextrin and is prepared from, and wherein sticking with paste seminal concentration is 30-50%.
Embodiment 1
The present embodiment crystallite abrasive material worm screw roll flute emery wheel, is made up of the raw material of following weight percentage: abrasive material 72.98%, bonding agent 16.02%, walnut shell 7%, dextrin solution 4%;
Wherein bonding agent is made up of the component of following weight percentage: boron glass 38%, feldspar 30%, nepheline powder 15%, clay 7%, lithium carbonate 3%, chrome green 7%.Bonding agent average grain diameter D
50it is 12.8 ~ 22.9 μm.
Wherein abrasive material is made up of the component of following weight percentage: 150 order ceramic microcrystalline abrasive material 30%, 150 order white fused aluminas 70%;
Wherein the granularity of walnut shell is 150 orders.
In the present embodiment, bonding agent is prepared by following methods and obtains: concrete operation step is:
A: measure boron glass, nepheline powder, lithium carbonate, chrome green by formula, mixes and loads grinding in ball grinder evenly, obtained mixture A;
B: the mixture A prepared by step a loads in crucible, and in air atmosphere, at 1200 DEG C of temperature, high melt, to complete melting, obtains mixture B;
C: the mixture B prepared by step b pours shrend in the container filling water into, obtained mixture C;
D: load ball mill crushing in ball mill after the mixture C drying prepared by step c, crosses 800 mesh sieves, obtained mixture D;
E: add feldspar and clay by formula ratio in mixture D prepared by steps d, mechanical agitation mixes, crosses 800 mesh sieves, to obtain final product.
The preparation method of the present embodiment roll flute emery wheel, concrete operation step is:
1) moulding mixture is prepared into: percentage composition takes the mixing of white fused alumina, ceramic microcrystalline abrasive material, dextrin solution, bonding agent and pore creating material and sieves by weight, obtained molding mass;
2) emery wheel blank is prepared: by step 1) molding mass prepared puts into the grinding tool assembled, and smooth laggard row compacting is scraped at stand, and adopt cover half shaping, after being pressed into given size, release also ejects emery wheel blank, obtained emery wheel blank;
3) dry: drying steps 2) the emery wheel blank prepared, obtained dry emery wheel blank;
Baking temperature program is: be warming up to 80 DEG C with 6.75 minutes/degree heating rate, be incubated 18 hours; Be warming up to 100 DEG C with 9 minutes/degree heating rate again, be incubated 15 hours; Room temperature is down to again with 6 minutes/degree rate of temperature fall.
Drying temperature curve is:
| Cumulative time (h) | 2 | 8 | 9 | 15 | 16 | 26 | 28 | 42 | 48 |
| Arrive temperature (DEG C) | 60 | 60 | 80 | 80 | 80 | 80 | 100 | 100 | Room temperature |
4) burn till: sintering step 3) the dry emery wheel blank prepared, to obtain final product;
Sintering temperature program is: with 1.26 minutes/degree heating rate, be warming up to 600 DEG C, be incubated 10 hours by 30 DEG C; With 1.5 minutes/degree heating rate, be warming up to 1000 DEG C, be incubated 9 hours; Again with 2 minutes/degree rate of temperature fall, be cooled to 30 DEG C.
Sintering temperature curve is:
Roll flute emery wheel revolving strength prepared by the present embodiment is high, and linear velocity can reach 80m/s, and grinding worm stable accuracy reaches 4 grades, and productive temp≤60s/, emery wheel durability is high, without burn crackle.
Embodiment 2
The present embodiment crystallite abrasive material worm screw roll flute emery wheel, is made up of the raw material of following weight percentage: abrasive material 76.56%, bonding agent 11.44%, walnut shell 8%, dextrin solution 4%;
Wherein bonding agent is made up of the component of following weight percentage: boron glass 38%, feldspar 30%, nepheline powder 15%, clay 7%, lithium carbonate 3%, chrome green 7%.Bonding agent average grain diameter D
50it is 12.8 ~ 22.9 μm.
Wherein abrasive material is made up of the component of following weight percentage: 150 order ceramic microcrystalline abrasive material 20%, 150 order white fused aluminas 80%;
Wherein the granularity of walnut shell is 150 orders.
In the present embodiment, bonding agent is prepared by following methods and obtains: concrete operation step is:
A: measure boron glass, nepheline powder, lithium carbonate, chrome green by formula, mixes and loads grinding in ball grinder evenly, obtained mixture A;
B: the mixture A prepared by step a loads in crucible, and in air atmosphere, at 1200 DEG C of temperature, high melt, to complete melting, obtains mixture B;
C: the mixture B prepared by step b pours shrend in the container filling water into, obtained mixture C;
D: load ball mill crushing in ball mill after the mixture C drying prepared by step c, crosses 800 mesh sieves, obtained mixture D;
E: add feldspar and clay by formula ratio in mixture D prepared by steps d, mechanical agitation mixes, crosses 800 mesh sieves, to obtain final product.
The preparation method of the present embodiment roll flute emery wheel, concrete operation step is:
1) moulding mixture is prepared into: percentage composition takes the mixing of white fused alumina, ceramic microcrystalline abrasive material, dextrin solution, bonding agent and pore creating material and sieves by weight, obtained molding mass;
2) emery wheel blank is prepared: by step 1) molding mass prepared puts into the grinding tool assembled, and smooth laggard row compacting is scraped at stand, and adopt cover half shaping, after being pressed into given size, release also ejects emery wheel blank, obtained emery wheel blank;
3) dry: drying steps 2) the emery wheel blank prepared, obtained dry emery wheel blank;
Baking temperature program is: be warming up to 80 DEG C with 6.75 minutes/degree heating rate, be incubated 18 hours; Be warming up to 100 DEG C with 9 minutes/degree heating rate again, be incubated 15 hours; Room temperature is down to again with 6 minutes/degree rate of temperature fall.
Drying temperature curve is:
| Cumulative time (h) | 2 | 8 | 9 | 15 | 16 | 26 | 28 | 42 | 48 |
| Arrive temperature (DEG C) | 60 | 60 | 80 | 80 | 80 | 80 | 100 | 100 | Room temperature |
4) burn till: sintering step 3) the dry emery wheel blank prepared, to obtain final product;
Sintering temperature program is: with 1.26 minutes/degree heating rate, be warming up to 600 DEG C, be incubated 10 hours by 30 DEG C; With 1.5 minutes/degree heating rate, be warming up to 1000 DEG C, be incubated 9 hours; Again with 2 minutes/degree rate of temperature fall, be cooled to 30 DEG C.
Sintering temperature curve is:
Roll flute emery wheel revolving strength prepared by the present embodiment is high, and linear velocity can reach 70m/s, and grinding worm stable accuracy reaches 5 grades, and productive temp≤70s/, emery wheel durability is high, without burn crackle.
Embodiment 3
The present embodiment crystallite abrasive material worm screw roll flute emery wheel, is made up of the raw material of following weight percentage: abrasive material 82%, bonding agent 8%, walnut shell 6%, dextrin solution 4%;
Wherein bonding agent is made up of the component of following weight percentage: boron glass 38%, feldspar 30%, nepheline powder 15%, clay 7%, lithium carbonate 3%, chrome green 7%.Bonding agent average grain diameter D
50it is 12.8 ~ 22.9 μm.
Wherein abrasive material is made up of the component of following weight percentage: 150 order ceramic microcrystalline abrasive material 20%, 150 order white fused aluminas 80%;
Wherein the granularity of walnut shell is 150 orders.
In the present embodiment, bonding agent is prepared by following methods and obtains: concrete operation step is:
A: measure boron glass, nepheline powder, lithium carbonate, chrome green by formula, mixes and loads grinding in ball grinder evenly, obtained mixture A;
B: the mixture A prepared by step a loads in crucible, and in air atmosphere, at 1200 DEG C of temperature, high melt, to complete melting, obtains mixture B;
C: the mixture B prepared by step b pours shrend in the container filling water into, obtained mixture C;
D: load ball mill crushing in ball mill after the mixture C drying prepared by step c, crosses 800 mesh sieves, obtained mixture D;
E: add feldspar and clay by formula ratio in mixture D prepared by steps d, mechanical agitation mixes, crosses 800 mesh sieves, to obtain final product.
The preparation method of the present embodiment roll flute emery wheel, concrete operation step is:
1) moulding mixture is prepared into: percentage composition takes the mixing of white fused alumina, ceramic microcrystalline abrasive material, dextrin solution, bonding agent and pore creating material and sieves by weight, obtained molding mass;
2) emery wheel blank is prepared: by step 1) molding mass prepared puts into the grinding tool assembled, and smooth laggard row compacting is scraped at stand, and adopt cover half shaping, after being pressed into given size, release also ejects emery wheel blank, obtained emery wheel blank;
3) dry: drying steps 2) the emery wheel blank prepared, obtained dry emery wheel blank;
Baking temperature program is: be warming up to 80 DEG C with 6.75 minutes/degree heating rate, be incubated 18 hours; Be warming up to 100 DEG C with 9 minutes/degree heating rate again, be incubated 15 hours; Room temperature is down to again with 6 minutes/degree rate of temperature fall.
Drying temperature curve is:
| Cumulative time (h) | 2 | 8 | 9 | 15 | 16 | 26 | 28 | 42 | 48 |
| Arrive temperature (DEG C) | 60 | 60 | 80 | 80 | 80 | 80 | 100 | 100 | Room temperature |
4) burn till: sintering step 3) the dry emery wheel blank prepared, to obtain final product;
Sintering temperature program is: with 1.26 minutes/degree heating rate, be warming up to 600 DEG C, be incubated 10 hours by 30 DEG C; With 1.5 minutes/degree heating rate, be warming up to 1000 DEG C, be incubated 9 hours; Again with 2 minutes/degree rate of temperature fall, be cooled to 30 DEG C.
Sintering temperature curve is:
Roll flute emery wheel revolving strength prepared by the present embodiment is high, and linear velocity can reach 63m/s, and grinding worm stable accuracy reaches 5 grades, and productive temp≤80s/, emery wheel durability is high, without burn crackle.
Embodiment 4
The present embodiment crystallite abrasive material worm screw roll flute emery wheel, is made up of the raw material of following weight percentage: abrasive material 65.5%, bonding agent 16.5%, walnut shell 13%, dextrin solution 5%;
Wherein bonding agent is made up of the component of following weight percentage: boron glass 38%, feldspar 30%, nepheline powder 15%, clay 7%, lithium carbonate 3%, chrome green 7%.Bonding agent average grain diameter D
50it is 12.8 ~ 22.9 μm.
Wherein abrasive material is made up of the component of following weight percentage: 150 order ceramic microcrystalline abrasive material 20%, 150 order white fused aluminas 80%;
Wherein the granularity of walnut shell is 150 orders.
In the present embodiment, bonding agent is prepared by following methods and obtains: concrete operation step is:
A: measure boron glass, nepheline powder, lithium carbonate, chrome green by formula, mixes and loads grinding in ball grinder evenly, obtained mixture A;
B: the mixture A prepared by step a loads in crucible, and in air atmosphere, at 1200 DEG C of temperature, high melt, to complete melting, obtains mixture B;
C: the mixture B prepared by step b pours shrend in the container filling water into, obtained mixture C;
D: load ball mill crushing in ball mill after the mixture C drying prepared by step c, crosses 800 mesh sieves, obtained mixture D;
E: add feldspar and clay by formula ratio in mixture D prepared by steps d, mechanical agitation mixes, crosses 800 mesh sieves, to obtain final product.
The preparation method of the present embodiment roll flute emery wheel, concrete operation step is:
1) moulding mixture is prepared into: percentage composition takes the mixing of white fused alumina, ceramic microcrystalline abrasive material, dextrin solution, bonding agent and pore creating material and sieves by weight, obtained molding mass;
2) emery wheel blank is prepared: by step 1) molding mass prepared puts into the grinding tool assembled, and smooth laggard row compacting is scraped at stand, and adopt cover half shaping, after being pressed into given size, release also ejects emery wheel blank, obtained emery wheel blank;
3) dry: drying steps 2) the emery wheel blank prepared, obtained dry emery wheel blank;
Baking temperature program is: be warming up to 80 DEG C with 6.75 minutes/degree heating rate, be incubated 18 hours; Be warming up to 100 DEG C with 9 minutes/degree heating rate again, be incubated 15 hours; Room temperature is down to again with 6 minutes/degree rate of temperature fall.
Drying temperature curve is:
| Cumulative time (h) | 2 | 8 | 9 | 15 | 16 | 26 | 28 | 42 | 48 |
| Arrive temperature (DEG C) | 60 | 60 | 80 | 80 | 80 | 80 | 100 | 100 | Room temperature |
4) burn till: sintering step 3) the dry emery wheel blank prepared, to obtain final product;
Sintering temperature program is: with 1.26 minutes/degree heating rate, be warming up to 600 DEG C, be incubated 10 hours by 30 DEG C; With 1.5 minutes/degree heating rate, be warming up to 1000 DEG C, be incubated 9 hours; Again with 2 minutes/degree rate of temperature fall, be cooled to 30 DEG C.
Sintering temperature curve is:
Roll flute emery wheel revolving strength prepared by the present embodiment is high, and linear velocity can reach 75m/s, and grinding worm stable accuracy reaches 4 grades, and productive temp≤65s/, emery wheel durability is high, without burn crackle.
Embodiment 5
The present embodiment crystallite abrasive material worm screw roll flute emery wheel, is made up of the raw material of following weight percentage: abrasive material 79%, bonding agent 8%, walnut shell 6%, dextrin solution 7%;
Wherein bonding agent is made up of the component of following weight percentage: boron glass 20%, feldspar 22%, nepheline powder 35%, clay 13%, lithium carbonate 2%, chrome green 7%.Bonding agent average grain diameter D
50it is 12.8 ~ 22.9 μm.
Wherein abrasive material is made up of the component of following weight percentage: 46 order ceramic microcrystalline abrasive material 10%, 46 order white fused aluminas 90%;
Wherein the granularity of walnut shell is 46 orders.
In the present embodiment, bonding agent is prepared by following methods and obtains: concrete operation step is:
A: measure boron glass, nepheline powder, lithium carbonate, chrome green by formula, mixes and loads grinding in ball grinder evenly, obtained mixture A;
B: the mixture A prepared by step a loads in crucible, and in air atmosphere, at 1250 DEG C of temperature, high melt, to complete melting, obtains mixture B;
C: the mixture B prepared by step b pours shrend in the container filling water into, obtained mixture C;
D: load ball mill crushing in ball mill after the mixture C drying prepared by step c, crosses 800 mesh sieves, obtained mixture D;
E: add feldspar and clay by formula ratio in mixture D prepared by steps d, mechanical agitation mixes, crosses 800 mesh sieves, to obtain final product.
The preparation method of the present embodiment roll flute emery wheel, concrete operation step is:
1) moulding mixture is prepared into: percentage composition takes the mixing of white fused alumina, ceramic microcrystalline abrasive material, dextrin solution, bonding agent and pore creating material and sieves by weight, obtained molding mass;
2) emery wheel blank is prepared: by step 1) molding mass prepared puts into the grinding tool assembled, and smooth laggard row compacting is scraped at stand, and adopt cover half shaping, after being pressed into given size, release also ejects emery wheel blank, obtained emery wheel blank;
3) dry: drying steps 2) the emery wheel blank prepared, obtained dry emery wheel blank;
Baking temperature program is: be warming up to 80 DEG C with 6.75 minutes/degree heating rate, be incubated 18 hours; Be warming up to 100 DEG C with 9 minutes/degree heating rate again, be incubated 15 hours; Room temperature is down to again with 6 minutes/degree rate of temperature fall.
Drying temperature curve is:
| Cumulative time (h) | 2 | 8 | 9 | 15 | 16 | 26 | 28 | 42 | 48 |
| Arrive temperature (DEG C) | 60 | 60 | 80 | 80 | 80 | 80 | 100 | 100 | Room temperature |
4) burn till: sintering step 3) the dry emery wheel blank prepared, to obtain final product;
Sintering temperature program is: with 1.26 minutes/degree heating rate, be warming up to 600 DEG C, be incubated 10 hours by 30 DEG C; With 1.5 minutes/degree heating rate, be warming up to 1000 DEG C, be incubated 9 hours; Again with 2 minutes/degree rate of temperature fall, be cooled to 30 DEG C.
Sintering temperature curve is:
Roll flute emery wheel revolving strength prepared by the present embodiment is high, and linear velocity can reach 63m/s, and grinding worm stable accuracy reaches 5 grades, and productive temp≤80s/, emery wheel durability is high, without burn crackle.
Embodiment 6
The present embodiment crystallite abrasive material worm screw roll flute emery wheel, is made up of the raw material of following weight percentage: abrasive material 65.5%, bonding agent 16.5%, walnut shell 13%, dextrin solution 5%;
Wherein bonding agent is made up of the component of following weight percentage: boron glass 40%, feldspar 27%, nepheline powder 10%, clay 5%, lithium carbonate 5%, chrome green 13%.Bonding agent average grain diameter D
50it is 12.8 ~ 22.9 μm.
Wherein abrasive material is made up of the component of following weight percentage: 100 order ceramic microcrystalline abrasive material 30%, 60 order white fused aluminas 70%;
Wherein the granularity of pore creating material is 80 orders.
In the present embodiment, bonding agent is prepared by following methods and obtains: concrete operation step is:
A: measure boron glass, nepheline powder, lithium carbonate, chrome green by formula, mixes and loads grinding in ball grinder evenly, obtained mixture A;
B: the mixture A prepared by step a loads in crucible, and in air atmosphere, at 1230 DEG C of temperature, high melt, to complete melting, obtains mixture B;
C: the mixture B prepared by step b pours shrend in the container filling water into, obtained mixture C;
D: load ball mill crushing in ball mill after the mixture C drying prepared by step c, crosses 700 mesh sieves, obtained mixture D;
E: add feldspar and clay by formula ratio in mixture D prepared by steps d, mechanical agitation mixes, crosses 700 mesh sieves, to obtain final product.
The preparation method of the present embodiment roll flute emery wheel, concrete operation step is:
1) moulding mixture is prepared into: percentage composition takes the mixing of white fused alumina, ceramic microcrystalline abrasive material, dextrin solution, bonding agent and pore creating material and sieves by weight, obtained molding mass;
2) emery wheel blank is prepared: by step 1) molding mass prepared puts into the grinding tool assembled, and smooth laggard row compacting is scraped at stand, and adopt cover half shaping, after being pressed into given size, release also ejects emery wheel blank, obtained emery wheel blank;
3) dry: drying steps 2) the emery wheel blank prepared, obtained dry emery wheel blank;
Baking temperature program is: be warming up to 80 DEG C with 6.75 minutes/degree heating rate, be incubated 18 hours; Be warming up to 100 DEG C with 9 minutes/degree heating rate again, be incubated 15 hours; Room temperature is down to again with 6 minutes/degree rate of temperature fall.
Drying temperature curve is:
| Cumulative time (h) | 2 | 8 | 9 | 15 | 16 | 26 | 28 | 42 | 48 |
| Arrive temperature (DEG C) | 60 | 60 | 80 | 80 | 80 | 80 | 100 | 100 | Room temperature |
4) burn till: sintering step 3) the dry emery wheel blank prepared, to obtain final product;
Sintering temperature program is: with 1.26 minutes/degree heating rate, be warming up to 600 DEG C, be incubated 10 hours by 30 DEG C; With 1.5 minutes/degree heating rate, be warming up to 1000 DEG C, be incubated 9 hours; Again with 2 minutes/degree rate of temperature fall, be cooled to 30 DEG C.
Sintering temperature curve is:
Roll flute emery wheel revolving strength prepared by the present embodiment is high, and linear velocity can reach 63m/s, and grinding worm stable accuracy reaches 5 grades, and productive temp≤80s/, emery wheel durability is high, without burn crackle.
Embodiment 7
The present embodiment crystallite abrasive material worm screw roll flute emery wheel, is made up of the raw material of following weight percentage: abrasive material 65.5%, bonding agent 16.5%, walnut shell 13%, dextrin solution 5%;
Wherein bonding agent is made up of the component of following weight percentage: boron glass 29%, feldspar 43%, nepheline powder 10%, clay 13%, lithium carbonate 2%, chrome green 3%.Bonding agent average grain diameter D
50it is 12.8 ~ 22.9 μm.
Wherein abrasive material is made up of the component of following weight percentage: 80 order ceramic microcrystalline abrasive material 50%, 90 order white fused aluminas 50%;
Wherein the granularity of pore creating material is 90 orders.
In the present embodiment, bonding agent is prepared by following methods and obtains: concrete operation step is:
A: measure boron glass, nepheline powder, lithium carbonate, chrome green by formula, mixes and loads grinding in ball grinder evenly, obtained mixture A;
B: the mixture A prepared by step a loads in crucible, and in air atmosphere, at 1250 DEG C of temperature, high melt, to complete melting, obtains mixture B;
C: the mixture B prepared by step b pours shrend in the container filling water into, obtained mixture C;
D: load ball mill crushing in ball mill after the mixture C drying prepared by step c, crosses 600 mesh sieves, obtained mixture D;
E: add feldspar and clay by formula ratio in mixture D prepared by steps d, mechanical agitation mixes, crosses 600 mesh sieves, to obtain final product.
The preparation method of the present embodiment roll flute emery wheel, concrete operation step is:
1) moulding mixture is prepared into: percentage composition takes the mixing of white fused alumina, ceramic microcrystalline abrasive material, dextrin solution, bonding agent and pore creating material and sieves by weight, obtained molding mass;
2) emery wheel blank is prepared: by step 1) molding mass prepared puts into the grinding tool assembled, and smooth laggard row compacting is scraped at stand, and adopt cover half shaping, after being pressed into given size, release also ejects emery wheel blank, obtained emery wheel blank;
3) dry: drying steps 2) the emery wheel blank prepared, obtained dry emery wheel blank;
Baking temperature program is: be warming up to 80 DEG C with 6.75 minutes/degree heating rate, be incubated 18 hours; Be warming up to 100 DEG C with 9 minutes/degree heating rate again, be incubated 15 hours; Room temperature is down to again with 6 minutes/degree rate of temperature fall.
Drying temperature curve is:
| Cumulative time (h) | 2 | 8 | 9 | 15 | 16 | 26 | 28 | 42 | 48 |
| Arrive temperature (DEG C) | 60 | 60 | 80 | 80 | 80 | 80 | 100 | 100 | Room temperature |
4) burn till: sintering step 3) the dry emery wheel blank prepared, to obtain final product;
Sintering temperature program is: with 1.26 minutes/degree heating rate, be warming up to 600 DEG C, be incubated 10 hours by 30 DEG C; With 1.5 minutes/degree heating rate, be warming up to 1000 DEG C, be incubated 9 hours; Again with 2 minutes/degree rate of temperature fall, be cooled to 30 DEG C.
Sintering temperature curve is:
Roll flute emery wheel revolving strength prepared by the present embodiment is high, and linear velocity can reach 63m/s, and grinding worm stable accuracy reaches 5 grades, and productive temp≤80s/, emery wheel durability is high, without burn crackle.
Claims (10)
1. a roll flute emery wheel, is characterized in that, is made up of the raw material of following weight percentage: abrasive material 65.5% ~ 82%, bonding agent 8% ~ 16.5%, pore creating material 6% ~ 13%, binding agent 4% ~ 7%; Wherein abrasive material is made up of the component of following weight percentage: white fused alumina 50 ~ 90%, ceramic microcrystalline abrasive material 10 ~ 50%.
2. roll flute emery wheel as claimed in claim 1, it is characterized in that, described bonding agent is made up of the component of following weight percentage: boron glass 20% ~ 40%, feldspar 22% ~ 43%, nepheline powder 10% ~ 35%, clay 5% ~ 13%, lithium carbonate 2% ~ 5%, chrome green 3% ~ 13%.
3. roll flute emery wheel as claimed in claim 1, it is characterized in that, the granularity of described white fused alumina is 46 ~ 150 orders.
4. roll flute emery wheel as claimed in claim 1, it is characterized in that, the granularity of described ceramic microcrystalline abrasive material is 46 ~ 150 orders.
5. roll flute emery wheel as claimed in claim 1, it is characterized in that, described binding agent is dextrin solution.
6. roll flute emery wheel as claimed in claim 1, it is characterized in that, described pore creating material is walnut shell.
7. roll flute emery wheel as claimed in claim 1, it is characterized in that, the granularity of described pore creating material is 46 ~ 150 orders.
8. a preparation method for roll flute emery wheel as claimed in claim 1, is characterized in that, comprises following operating procedure:
1) be prepared into moulding mixture: by weight percentage composition take abrasive material, binding agent, bonding agent and pore creating material mixing sieve, obtain molding mass;
2) emery wheel blank is prepared: by step 1) molding mass prepared puts into mould, compressing, obtains emery wheel blank;
3) dry: drying steps 2) the emery wheel blank prepared, obtained dry emery wheel blank;
4) sinter: sintering step 3) the dry emery wheel blank prepared, to obtain final product.
9. the preparation method of roll flute emery wheel as claimed in claim 8, is characterized in that, step 3) in baking temperature program be: with 6.75 minutes/degree heating rate, be warming up to 80 DEG C in 9 hours, be incubated 18 hours; Again with 9 minutes/degree heating rate, be warming up to 100 DEG C in 3 hours, be incubated 15 hours; Again with 6 minutes/degree rate of temperature fall, in 7 hours, be down to room temperature.
10. the preparation method of roll flute emery wheel as claimed in claim 8, is characterized in that, step 4) in sintering temperature program be: with 1.26 minutes/degree heating rate, be warming up to 600 DEG C by 30 DEG C in 12 hours, be incubated 10 hours; With 1.5 minutes/degree heating rate, be warming up to 1000 DEG C in 10 hours, be incubated 9 hours; Again with 2 minutes/degree rate of temperature fall, in 35 hours, be cooled to 30 DEG C.
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