CN104999383B - A kind of roll flute grinding wheel and preparation method thereof - Google Patents

A kind of roll flute grinding wheel and preparation method thereof Download PDF

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Publication number
CN104999383B
CN104999383B CN201510344722.3A CN201510344722A CN104999383B CN 104999383 B CN104999383 B CN 104999383B CN 201510344722 A CN201510344722 A CN 201510344722A CN 104999383 B CN104999383 B CN 104999383B
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grinding wheel
mixture
temperature
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minutes
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CN104999383A (en
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周涛
杨雪峰
李金勇
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WHITE DOVE ABRASIVES CO Ltd
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WHITE DOVE ABRASIVES CO Ltd
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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
    • 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
    • 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 kind of roll flute grinding wheels and preparation method thereof, belong to grinding wheel manufacturing technology field.Roll flute grinding wheel of the present invention, is made of the raw material of following weight percentage：Abrasive material 65.5%~82%, bonding agent 8%~16.5%, pore creating material 6%~13%, binder 4%~7%；Wherein abrasive material is grouped as by the group of following weight percentage：White fused alumina 50~90%, ceramic microcrystalline abrasive material 10~50%.The roll flute grinding wheel formula is simple, and each raw material synergistic effect, improves the intensity and heat dissipation performance of grinding wheel, grinding efficiency is high, no burn crackle, and grinding accuracy reaches 4~5 grades in formula.The preparation method of roll flute grinding wheel of the present invention, easy to operate, easily controllable and realization.

Description

A kind of roll flute grinding wheel and preparation method thereof
Technical field
The invention belongs to grinding wheel manufacturing technology fields, and in particular to a kind of roll flute grinding wheel and preparation method thereof.
Background technology
Ceramic microcrystalline abrasive material worm wheel grinding object is saloon car transmission gear, and worm abrasion wheel roll flute processing technology is profit The special mill processing technology developed with the theory of engagement between worm abrasion wheel and gear belongs to one of plunge grinding mode, but not It is same as general form grinding, since the linear velocity difference of tooth root and tooth top position grinding wheel is very big, grinding is asynchronous, and abrasive material takes off Terminal-velocity degree is different, easily causes very much the variation in grinding wheel type face, therefore the type face of the flank of tooth also changes therewith.Simultaneously as the mill of grinding wheel It is curved face contact between bevel and the flank of tooth, especially tooth root position, coolant liquid are not easily accessible, therefore thermal diffusivity is bad, workpiece table Face is easily burnt, therefore operation is simple, ground effect is good, has a safety feature, production efficiency there is an urgent need to develop one kind High roll flute grinding wheel.
Chinese patent CN103862393A discloses a kind of ceramic microcrystalline abrasive material gear grinding abrasive disk, including center strengthening part Part, wherein center strengthening part is used to be made of WA100#, bonding agent, bonding agent and wetting agent with grinding, grinding uses portion Point be made of CA60~120#, WA60~120#, bonding agent, binder, wetting agent, wherein bonding agent by clay, boron glass and Lithium-containing oxides frit forms, and the center strengthening part and milled portion of the grinding wheel of the disclosure use different formulas, formula Composition is complicated, and manufacturing process is cumbersome, is unsuitable for industrial application.
Invention content
In order to overcome the deficiencies of existing technologies, one of the objects of the present invention is to provide be formulated simple roll flute grinding wheel.
Meanwhile the present invention also resides in and provides a kind of preparation method of roll flute grinding wheel.
To achieve the goals above, the technical solution adopted by the present invention is as follows：
A kind of roll flute grinding wheel, is made of the raw material of following weight percentage：Abrasive material 65.5%~82%, bonding agent 8% ~16.5%, pore creating material 6%~13%, binder 4%~7%；Wherein abrasive material is grouped as by the group 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 grinding wheel, and usual abrasive grain is smaller, and machining accuracy is higher, still The small abrasive material of granularity is easy to fall off in grinding process, thus in order to make grinding wheel have high machining accuracy while, avoid grinding Material falls off in grinding process, it is preferred that the granularity of white fused alumina is 46~150 mesh, and the granularity of ceramic microcrystalline abrasive material is 46~150 Mesh.
In above-mentioned roll flute grinding wheel, use white fused alumina and ceramic microcrystalline abrasive material to compound abrasive material, and by adjusting each raw material Dosage makes mutually to act synergistically between each component, improves the intensity of grinding wheel, and the grinding wheel of preparation is made to have very high self-sharpening, Good shape retention, high precision machining, durability is high, no burn crackle；And above-mentioned roll flute grinding wheel, formula is simple, former Material is easy to get, and is easy to make.
Above-mentioned bonding agent is grouped as by the group 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 further decrease the firing temperature and refractoriness of bonding agent, bonding agent is improved to the wettability of abrasive material, is carried The intensity of high grinding wheel, and then improve the linear velocity of wheel grinding, it is preferred that bonding agent average grain diameter D50It is 12.8~22.9 μm.
Above-mentioned bonding agent is made of boron glass, feldspar, nepheline powder, clay, lithium carbonate, chrome green compounding, the combination Nepheline powder is added in agent to be used in compounding with boron glass, reduces the brittleness of bonding agent, while chrome green and other groups is added Divide synergistic effect, improves the intensity of bonding agent, reduce the firing temperature of bonding agent；The bonding agent is good to the wetability of abrasive material, Holding force is high, and the crystal form integrality of ceramic microcrystalline abrasive material is kept in grinding wheel sintering process, and abrasive material is made to have best ground effect, and Grinding wheel revolving strength is high, and linear velocity can reach 63m/s or more, have a safety feature, and grinding efficiency is high.
Above-mentioned bonding agent is prepared by following methods：Concrete operation step is：
a：Boron glass, nepheline powder, lithium carbonate, chrome green are measured by formula, is uniformly mixed, mixture A is made；
b：Mixture B is made in mixture A prepared by heating melting steps a；
c：Mixture C is made in mixture B prepared by water quenching step b；
d：Ball mill crushing after mixture C drying prepared by step c, crosses 600-800 mesh sieve, mixture D is made；
e：Feldspar and clay is added by formula ratio in mixture D prepared by step d, is uniformly mixed, crosses 600-800 mesh Sieve to get.
Described in step a be uniformly mixed specific method be：Boron glass, nepheline powder, lithium carbonate and three oxidations are taken by formula Ball milling is uniform again after mixing for two chromium.
The specific method that melting is heated in step b is：Mixture A is heated to 1200 DEG C~1250 DEG C in air atmosphere Melting is melted to complete.
The binder is dextrin solution, and dextrin solution is common binder during emery wheel making, specially by pasting The sticking solution of tool that smart solution adds water to be configured to.
The pore creating material is walnut shell.
Addition makes to form uniform gap in grinding wheel using pore creating material in grinding wheel manufacture, is cooled down for chip removal and storage Liquid, improves the heat dissipation performance of grinding wheel, and the granule size of pore creating material determines the fine and closely woven degree of the tissue of grinding wheel.Pore creating material granularity is big, Grinding wheel organization is loose to be not easy to plug, and grinding efficiency is high, but wheel strength is low, easy to wear；Pore creating material granularity is small, and grinding wheel organization is tight Close, grinding wheel shape retentivity is good, and appearance bits property is poor, and grinding wheel is easily burnt.Therefore, excellent in order to balance the intensity and heat dissipation performance of grinding wheel The granularity of the pore creating material of choosing is directly proportional to the granularity of abrasive material, i.e., the granularity of pore creating material is 46~150 mesh.
The preparation method of above-mentioned roll flute grinding wheel, including following operating procedure：
1) molding mass is prepared：Percentage composition weighs abrasive material, binder, bonding agent and pore creating material mixing sieving by weight, i.e., Obtain molding mass；
2) grinding wheel blank is prepared：Molding mass prepared by step 1) is put into mold, compression moulding is to get grinding wheel blank；
3) drying steps 2) the grinding wheel blank for preparing, dry grinding wheel blank is made；
4) sintering step 3) prepare drying grinding wheel blank to get.
Compression moulding is after being pressed into predetermined size in step 2), and release simultaneously ejects grinding wheel blank.
Molding mass is put into booth after grinding tool and is pressed after being scraped in step 2).
Drying temperature program is in step 3)：With 6.75 minutes/degree heating rate, 80 DEG C are warming up in 9 hours, heat preservation 18 Hour；Again with 9 minutes/degree heating rate, it is warming up to 100 DEG C in 3 hours, keeps the temperature 15 hours；Again with 6 minutes/degree rate of temperature fall, It is down to room temperature in 7 hours.
Preferred drying temperature curve is as follows：
Cumulative time (h) 2 8 9 15 16 26 28 42 48
Reach temperature (DEG C) 60 60 80 80 80 80 100 100 Room temperature
Sintering temperature program is in step 4)：With 1.26 minutes/degree heating rate, 600 are warming up to by 30 DEG C in 12 hours DEG C, keep the temperature 10 hours；With 1.5 minutes/degree heating rate, it is warming up to 1000 DEG C in 10 hours, keeps the temperature 9 hours；Again with 2 minutes/ Rate of temperature fall is spent, 30 DEG C are cooled in 35 hours.
Preferred sintering temperature curve is as follows：
Crystallite abrasive material worm screw roll flute grinding wheel of the present invention, by white fused alumina, ceramic microcrystalline abrasive material, bonding agent, binder and pore-creating Agent is made of raw material, and formula is simple, and raw material is easy to get, and convenient for making, and the present invention is mixed using white fused alumina with ceramic microcrystalline abrasive material Used as abrasive material, cost is not only reduced, but also the segmental defect of the grinding tool of the single abrasive material of use in use can be improved, is carried High grinding efficiency and quality；Each raw material of roll flute grinding wheel of the present invention acts synergistically in the amount ranges of restriction simultaneously, makes preparation Grinding wheel has very high self-sharpening, and good shape retention, high precision machining, durability is high, no burn crackle.
The preparation method of roll flute grinding wheel of the present invention, easy to operate, easily controllable and realization, and further preferred grinding wheel The drying curve and sintering curre of preparation process, improve the institutional framework of grinding wheel, further increase the grinding performance of grinding wheel.
Specific implementation mode
With reference to specific embodiment, invention is further described in detail, but does not constitute any limit to the present invention System.
Dextrin solution adds water to be prepared by dextrin in following embodiments, wherein a concentration of 30-50% of dextrin liquid.
Embodiment 1
The present embodiment crystallite abrasive material worm screw roll flute grinding wheel, is made 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 grouped as by the group 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 D50It is 12.8~22.9 μm.
Wherein abrasive material is grouped as by the group of following weight percentage：150 mesh ceramic microcrystalline abrasive materials 30%, 150 mesh are rigid in vain Jade 70%；
Wherein the granularity of walnut shell is 150 mesh.
Bonding agent is prepared by following methods in the present embodiment：Concrete operation step is：
a：Boron glass, nepheline powder, lithium carbonate, chrome green are measured by formula, is uniformly mixed to be fitted into ball mill and grind Uniformly, mixture A is made；
b：Mixture A prepared by step a is fitted into crucible, high melt is extremely at a temperature of 1200 DEG C in air atmosphere Mixture B is made in melting completely；
c：Mixture B prepared by step b is poured into water quenching in the container for fill water, mixture C is made；
d：It is fitted into ball mill crushing in ball mill after mixture C prepared by step c is dried, 800 mesh sieve is crossed, mixture is made D；
e：Feldspar and clay is added by formula ratio in mixture D prepared by step d, mechanical agitation is uniformly mixed, and crosses 800 Mesh sieve to get.
The preparation method of the present embodiment roll flute grinding wheel, concrete operation step are：
1) molding mass is prepared：By weight percentage composition weigh white fused alumina, ceramic microcrystalline abrasive material, dextrin solution, bonding agent and Pore creating material mixing sieving, is made molding mass；
2) grinding wheel blank is prepared：Molding mass prepared by step 1) is put into assembled grinding tool, booth carries out after being scraped Compacting, is molded using cover half, and after being pressed into predetermined size, release simultaneously ejects grinding wheel blank, and grinding wheel blank is made；
3) dry：Drying steps 2) the grinding wheel blank for preparing, dry grinding wheel blank is made；
Drying temperature program is：80 DEG C are warming up to 6.75 minutes/degree heating rate, keeps the temperature 18 hours；Again with 9 minutes/ Degree heating rate is warming up to 100 DEG C, keeps the temperature 15 hours；Room temperature is down to 6 minutes/degree rate of temperature fall again.
Drying temperature curve is：
Cumulative time (h) 2 8 9 15 16 26 28 42 48
Reach temperature (DEG C) 60 60 80 80 80 80 100 100 Room temperature
4) it is burnt into：Sintering step 3) prepare drying grinding wheel blank to get；
Sintering temperature program is：With 1.26 minutes/degree heating rate, 600 DEG C are warming up to by 30 DEG C, keeps the temperature 10 hours；With 1.5 minutes/degree heating rate, is warming up to 1000 DEG C, keeps the temperature 9 hours；Again with 2 minutes/degree rate of temperature fall, it is cooled to 30 DEG C.
Sintering temperature curve is：
Roll flute grinding wheel revolving strength manufactured in the present embodiment is high, and linear velocity can reach 80m/s, and grinding worm stable accuracy reaches To 4 grades, productive temp≤60s/, grinding wheel durability is high, no burn crackle.
Embodiment 2
The present embodiment crystallite abrasive material worm screw roll flute grinding wheel, is made 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 grouped as by the group 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 D50It is 12.8~22.9 μm.
Wherein abrasive material is grouped as by the group of following weight percentage：150 mesh ceramic microcrystalline abrasive materials 20%, 150 mesh are rigid in vain Jade 80%；
Wherein the granularity of walnut shell is 150 mesh.
Bonding agent is prepared by following methods in the present embodiment：Concrete operation step is：
a：Boron glass, nepheline powder, lithium carbonate, chrome green are measured by formula, is uniformly mixed to be fitted into ball mill and grind Uniformly, mixture A is made；
b：Mixture A prepared by step a is fitted into crucible, high melt is extremely at a temperature of 1200 DEG C in air atmosphere Mixture B is made in melting completely；
c：Mixture B prepared by step b is poured into water quenching in the container for fill water, mixture C is made；
d：It is fitted into ball mill crushing in ball mill after mixture C prepared by step c is dried, 800 mesh sieve is crossed, mixture is made D；
e：Feldspar and clay is added by formula ratio in mixture D prepared by step d, mechanical agitation is uniformly mixed, and crosses 800 Mesh sieve to get.
The preparation method of the present embodiment roll flute grinding wheel, concrete operation step are：
1) molding mass is prepared：By weight percentage composition weigh white fused alumina, ceramic microcrystalline abrasive material, dextrin solution, bonding agent and Pore creating material mixing sieving, is made molding mass；
2) grinding wheel blank is prepared：Molding mass prepared by step 1) is put into assembled grinding tool, booth carries out after being scraped Compacting, is molded using cover half, and after being pressed into predetermined size, release simultaneously ejects grinding wheel blank, and grinding wheel blank is made；
3) dry：Drying steps 2) the grinding wheel blank for preparing, dry grinding wheel blank is made；
Drying temperature program is：80 DEG C are warming up to 6.75 minutes/degree heating rate, keeps the temperature 18 hours；Again with 9 minutes/ Degree heating rate is warming up to 100 DEG C, keeps the temperature 15 hours；Room temperature is down to 6 minutes/degree rate of temperature fall again.
Drying temperature curve is：
Cumulative time (h) 2 8 9 15 16 26 28 42 48
Reach temperature (DEG C) 60 60 80 80 80 80 100 100 Room temperature
4) it is burnt into：Sintering step 3) prepare drying grinding wheel blank to get；
Sintering temperature program is：With 1.26 minutes/degree heating rate, 600 DEG C are warming up to by 30 DEG C, keeps the temperature 10 hours；With 1.5 minutes/degree heating rate, is warming up to 1000 DEG C, keeps the temperature 9 hours；Again with 2 minutes/degree rate of temperature fall, it is cooled to 30 DEG C.
Sintering temperature curve is：
Roll flute grinding wheel revolving strength manufactured in the present embodiment is high, and linear velocity can reach 70m/s, and grinding worm stable accuracy reaches To 5 grades, productive temp≤70s/, grinding wheel durability is high, no burn crackle.
Embodiment 3
The present embodiment crystallite abrasive material worm screw roll flute grinding wheel, is made of the raw material of following weight percentage：Abrasive material 82%, knot Mixture 8%, walnut shell 6%, dextrin solution 4%；
Wherein bonding agent is grouped as by the group 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 D50It is 12.8~22.9 μm.
Wherein abrasive material is grouped as by the group of following weight percentage：150 mesh ceramic microcrystalline abrasive materials 20%, 150 mesh are rigid in vain Jade 80%；
Wherein the granularity of walnut shell is 150 mesh.
Bonding agent is prepared by following methods in the present embodiment：Concrete operation step is：
a：Boron glass, nepheline powder, lithium carbonate, chrome green are measured by formula, is uniformly mixed to be fitted into ball mill and grind Uniformly, mixture A is made；
b：Mixture A prepared by step a is fitted into crucible, high melt is extremely at a temperature of 1200 DEG C in air atmosphere Mixture B is made in melting completely；
c：Mixture B prepared by step b is poured into water quenching in the container for fill water, mixture C is made；
d：It is fitted into ball mill crushing in ball mill after mixture C prepared by step c is dried, 800 mesh sieve is crossed, mixture is made D；
e：Feldspar and clay is added by formula ratio in mixture D prepared by step d, mechanical agitation is uniformly mixed, and crosses 800 Mesh sieve to get.
The preparation method of the present embodiment roll flute grinding wheel, concrete operation step are：
1) molding mass is prepared：By weight percentage composition weigh white fused alumina, ceramic microcrystalline abrasive material, dextrin solution, bonding agent and Pore creating material mixing sieving, is made molding mass；
2) grinding wheel blank is prepared：Molding mass prepared by step 1) is put into assembled grinding tool, booth carries out after being scraped Compacting, is molded using cover half, and after being pressed into predetermined size, release simultaneously ejects grinding wheel blank, and grinding wheel blank is made；
3) dry：Drying steps 2) the grinding wheel blank for preparing, dry grinding wheel blank is made；
Drying temperature program is：80 DEG C are warming up to 6.75 minutes/degree heating rate, keeps the temperature 18 hours；Again with 9 minutes/ Degree heating rate is warming up to 100 DEG C, keeps the temperature 15 hours；Room temperature is down to 6 minutes/degree rate of temperature fall again.
Drying temperature curve is：
Cumulative time (h) 2 8 9 15 16 26 28 42 48
Reach temperature (DEG C) 60 60 80 80 80 80 100 100 Room temperature
4) it is burnt into：Sintering step 3) prepare drying grinding wheel blank to get；
Sintering temperature program is：With 1.26 minutes/degree heating rate, 600 DEG C are warming up to by 30 DEG C, keeps the temperature 10 hours；With 1.5 minutes/degree heating rate, is warming up to 1000 DEG C, keeps the temperature 9 hours；Again with 2 minutes/degree rate of temperature fall, it is cooled to 30 DEG C.
Sintering temperature curve is：
Roll flute grinding wheel revolving strength manufactured in the present embodiment is high, and linear velocity can reach 63m/s, and grinding worm stable accuracy reaches To 5 grades, productive temp≤80s/, grinding wheel durability is high, no burn crackle.
Embodiment 4
The present embodiment crystallite abrasive material worm screw roll flute grinding wheel, is made 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 grouped as by the group 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 D50It is 12.8~22.9 μm.
Wherein abrasive material is grouped as by the group of following weight percentage：150 mesh ceramic microcrystalline abrasive materials 20%, 150 mesh are rigid in vain Jade 80%；
Wherein the granularity of walnut shell is 150 mesh.
Bonding agent is prepared by following methods in the present embodiment：Concrete operation step is：
a：Boron glass, nepheline powder, lithium carbonate, chrome green are measured by formula, is uniformly mixed to be fitted into ball mill and grind Uniformly, mixture A is made；
b：Mixture A prepared by step a is fitted into crucible, high melt is extremely at a temperature of 1200 DEG C in air atmosphere Mixture B is made in melting completely；
c：Mixture B prepared by step b is poured into water quenching in the container for fill water, mixture C is made；
d：It is fitted into ball mill crushing in ball mill after mixture C prepared by step c is dried, 800 mesh sieve is crossed, mixture is made D；
e：Feldspar and clay is added by formula ratio in mixture D prepared by step d, mechanical agitation is uniformly mixed, and crosses 800 Mesh sieve to get.
The preparation method of the present embodiment roll flute grinding wheel, concrete operation step are：
1) molding mass is prepared：By weight percentage composition weigh white fused alumina, ceramic microcrystalline abrasive material, dextrin solution, bonding agent and Pore creating material mixing sieving, is made molding mass；
2) grinding wheel blank is prepared：Molding mass prepared by step 1) is put into assembled grinding tool, booth carries out after being scraped Compacting, is molded using cover half, and after being pressed into predetermined size, release simultaneously ejects grinding wheel blank, and grinding wheel blank is made；
3) dry：Drying steps 2) the grinding wheel blank for preparing, dry grinding wheel blank is made；
Drying temperature program is：80 DEG C are warming up to 6.75 minutes/degree heating rate, keeps the temperature 18 hours；Again with 9 minutes/ Degree heating rate is warming up to 100 DEG C, keeps the temperature 15 hours；Room temperature is down to 6 minutes/degree rate of temperature fall again.
Drying temperature curve is：
Cumulative time (h) 2 8 9 15 16 26 28 42 48
Reach temperature (DEG C) 60 60 80 80 80 80 100 100 Room temperature
4) it is burnt into：Sintering step 3) prepare drying grinding wheel blank to get；
Sintering temperature program is：With 1.26 minutes/degree heating rate, 600 DEG C are warming up to by 30 DEG C, keeps the temperature 10 hours；With 1.5 minutes/degree heating rate, is warming up to 1000 DEG C, keeps the temperature 9 hours；Again with 2 minutes/degree rate of temperature fall, it is cooled to 30 DEG C.
Sintering temperature curve is：
Roll flute grinding wheel revolving strength manufactured in the present embodiment is high, and linear velocity can reach 75m/s, and grinding worm stable accuracy reaches To 4 grades, productive temp≤65s/, grinding wheel durability is high, no burn crackle.
Embodiment 5
The present embodiment crystallite abrasive material worm screw roll flute grinding wheel, is made of the raw material of following weight percentage：Abrasive material 79%, knot Mixture 8%, walnut shell 6%, dextrin solution 7%；
Wherein bonding agent is grouped as by the group 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 D50It is 12.8~22.9 μm.
Wherein abrasive material is grouped as by the group of following weight percentage：46 mesh ceramic microcrystalline abrasive materials 10%, 46 mesh white fused aluminas 90%；
Wherein the granularity of walnut shell is 46 mesh.
Bonding agent is prepared by following methods in the present embodiment：Concrete operation step is：
a：Boron glass, nepheline powder, lithium carbonate, chrome green are measured by formula, is uniformly mixed to be fitted into ball mill and grind Uniformly, mixture A is made；
b：Mixture A prepared by step a is fitted into crucible, high melt is extremely at a temperature of 1250 DEG C in air atmosphere Mixture B is made in melting completely；
c：Mixture B prepared by step b is poured into water quenching in the container for fill water, mixture C is made；
d：It is fitted into ball mill crushing in ball mill after mixture C prepared by step c is dried, 800 mesh sieve is crossed, mixture is made D；
e：Feldspar and clay is added by formula ratio in mixture D prepared by step d, mechanical agitation is uniformly mixed, and crosses 800 Mesh sieve to get.
The preparation method of the present embodiment roll flute grinding wheel, concrete operation step are：
1) molding mass is prepared：By weight percentage composition weigh white fused alumina, ceramic microcrystalline abrasive material, dextrin solution, bonding agent and Pore creating material mixing sieving, is made molding mass；
2) grinding wheel blank is prepared：Molding mass prepared by step 1) is put into assembled grinding tool, booth carries out after being scraped Compacting, is molded using cover half, and after being pressed into predetermined size, release simultaneously ejects grinding wheel blank, and grinding wheel blank is made；
3) dry：Drying steps 2) the grinding wheel blank for preparing, dry grinding wheel blank is made；
Drying temperature program is：80 DEG C are warming up to 6.75 minutes/degree heating rate, keeps the temperature 18 hours；Again with 9 minutes/ Degree heating rate is warming up to 100 DEG C, keeps the temperature 15 hours；Room temperature is down to 6 minutes/degree rate of temperature fall again.
Drying temperature curve is：
Cumulative time (h) 2 8 9 15 16 26 28 42 48
Reach temperature (DEG C) 60 60 80 80 80 80 100 100 Room temperature
4) it is burnt into：Sintering step 3) prepare drying grinding wheel blank to get；
Sintering temperature program is：With 1.26 minutes/degree heating rate, 600 DEG C are warming up to by 30 DEG C, keeps the temperature 10 hours；With 1.5 minutes/degree heating rate, is warming up to 1000 DEG C, keeps the temperature 9 hours；Again with 2 minutes/degree rate of temperature fall, it is cooled to 30 DEG C.
Sintering temperature curve is：
Roll flute grinding wheel revolving strength manufactured in the present embodiment is high, and linear velocity can reach 63m/s, and grinding worm stable accuracy reaches To 5 grades, productive temp≤80s/, grinding wheel durability is high, no burn crackle.
Embodiment 6
The present embodiment crystallite abrasive material worm screw roll flute grinding wheel, is made 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 grouped as by the group 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 D50It is 12.8~22.9 μm.
Wherein abrasive material is grouped as by the group of following weight percentage：100 mesh ceramic microcrystalline abrasive materials 30%, 60 mesh white fused aluminas 70%；
Wherein the granularity of pore creating material is 80 mesh.
Bonding agent is prepared by following methods in the present embodiment：Concrete operation step is：
a：Boron glass, nepheline powder, lithium carbonate, chrome green are measured by formula, is uniformly mixed to be fitted into ball mill and grind Uniformly, mixture A is made；
b：Mixture A prepared by step a is fitted into crucible, high melt is extremely at a temperature of 1230 DEG C in air atmosphere Mixture B is made in melting completely；
c：Mixture B prepared by step b is poured into water quenching in the container for fill water, mixture C is made；
d：It is fitted into ball mill crushing in ball mill after mixture C prepared by step c is dried, 700 mesh sieve is crossed, mixture is made D；
e：Feldspar and clay is added by formula ratio in mixture D prepared by step d, mechanical agitation is uniformly mixed, and crosses 700 Mesh sieve to get.
The preparation method of the present embodiment roll flute grinding wheel, concrete operation step are：
1) molding mass is prepared：By weight percentage composition weigh white fused alumina, ceramic microcrystalline abrasive material, dextrin solution, bonding agent and Pore creating material mixing sieving, is made molding mass；
2) grinding wheel blank is prepared：Molding mass prepared by step 1) is put into assembled grinding tool, booth carries out after being scraped Compacting, is molded using cover half, and after being pressed into predetermined size, release simultaneously ejects grinding wheel blank, and grinding wheel blank is made；
3) dry：Drying steps 2) the grinding wheel blank for preparing, dry grinding wheel blank is made；
Drying temperature program is：80 DEG C are warming up to 6.75 minutes/degree heating rate, keeps the temperature 18 hours；Again with 9 minutes/ Degree heating rate is warming up to 100 DEG C, keeps the temperature 15 hours；Room temperature is down to 6 minutes/degree rate of temperature fall again.
Drying temperature curve is：
Cumulative time (h) 2 8 9 15 16 26 28 42 48
Reach temperature (DEG C) 60 60 80 80 80 80 100 100 Room temperature
4) it is burnt into：Sintering step 3) prepare drying grinding wheel blank to get；
Sintering temperature program is：With 1.26 minutes/degree heating rate, 600 DEG C are warming up to by 30 DEG C, keeps the temperature 10 hours；With 1.5 minutes/degree heating rate, is warming up to 1000 DEG C, keeps the temperature 9 hours；Again with 2 minutes/degree rate of temperature fall, it is cooled to 30 DEG C.
Sintering temperature curve is：
Roll flute grinding wheel revolving strength manufactured in the present embodiment is high, and linear velocity can reach 63m/s, and grinding worm stable accuracy reaches To 5 grades, productive temp≤80s/, grinding wheel durability is high, no burn crackle.
Embodiment 7
The present embodiment crystallite abrasive material worm screw roll flute grinding wheel, is made 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 grouped as by the group 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 D50It is 12.8~22.9 μm.
Wherein abrasive material is grouped as by the group of following weight percentage：80 mesh ceramic microcrystalline abrasive materials 50%, 90 mesh white fused aluminas 50%；
Wherein the granularity of pore creating material is 90 mesh.
Bonding agent is prepared by following methods in the present embodiment：Concrete operation step is：
a：Boron glass, nepheline powder, lithium carbonate, chrome green are measured by formula, is uniformly mixed to be fitted into ball mill and grind Uniformly, mixture A is made；
b：Mixture A prepared by step a is fitted into crucible, high melt is extremely at a temperature of 1250 DEG C in air atmosphere Mixture B is made in melting completely；
c：Mixture B prepared by step b is poured into water quenching in the container for fill water, mixture C is made；
d：It is fitted into ball mill crushing in ball mill after mixture C prepared by step c is dried, 600 mesh sieve is crossed, mixture is made D；
e：Feldspar and clay is added by formula ratio in mixture D prepared by step d, mechanical agitation is uniformly mixed, and crosses 600 Mesh sieve to get.
The preparation method of the present embodiment roll flute grinding wheel, concrete operation step are：
1) molding mass is prepared：By weight percentage composition weigh white fused alumina, ceramic microcrystalline abrasive material, dextrin solution, bonding agent and Pore creating material mixing sieving, is made molding mass；
2) grinding wheel blank is prepared：Molding mass prepared by step 1) is put into assembled grinding tool, booth carries out after being scraped Compacting, is molded using cover half, and after being pressed into predetermined size, release simultaneously ejects grinding wheel blank, and grinding wheel blank is made；
3) dry：Drying steps 2) the grinding wheel blank for preparing, dry grinding wheel blank is made；
Drying temperature program is：80 DEG C are warming up to 6.75 minutes/degree heating rate, keeps the temperature 18 hours；Again with 9 minutes/ Degree heating rate is warming up to 100 DEG C, keeps the temperature 15 hours；Room temperature is down to 6 minutes/degree rate of temperature fall again.
Drying temperature curve is：
Cumulative time (h) 2 8 9 15 16 26 28 42 48
Reach temperature (DEG C) 60 60 80 80 80 80 100 100 Room temperature
4) it is burnt into：Sintering step 3) prepare drying grinding wheel blank to get；
Sintering temperature program is：With 1.26 minutes/degree heating rate, 600 DEG C are warming up to by 30 DEG C, keeps the temperature 10 hours；With 1.5 minutes/degree heating rate, is warming up to 1000 DEG C, keeps the temperature 9 hours；Again with 2 minutes/degree rate of temperature fall, it is cooled to 30 DEG C.
Sintering temperature curve is：
Roll flute grinding wheel revolving strength manufactured in the present embodiment is high, and linear velocity can reach 63m/s, and grinding worm stable accuracy reaches To 5 grades, productive temp≤80s/, grinding wheel durability is high, no burn crackle.

Claims (4)

1. a kind of roll flute grinding wheel, which is characterized in that be made of the raw material of following weight percentage：Abrasive material 65.5% ~ 82%, in conjunction with Agent 8% ~ 16.5%, pore creating material 6% ~ 13%, binder 4% ~ 7%；
The abrasive material is grouped as by the group of following weight percentage：White fused alumina 50 ~ 90%, ceramic microcrystalline abrasive material 10 ~ 50%；It is described The granularity of white fused alumina is 46 ~ 150 mesh；The granularity of the ceramic microcrystalline abrasive material is 46 ~ 150 mesh；
The bonding agent is made 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%；The concrete operation step of preparation method is：
a：Boron glass, nepheline powder, lithium carbonate, chrome green are measured by formula, is uniformly mixed, mixture A is made；
b：Mixture B is made in mixture A prepared by heating melting steps a；Heating the specific method melted is：Mixture A is existed 1200 DEG C ~ 1250 DEG C meltings are heated in air atmosphere to complete melting；
c：Mixture C is made in mixture B prepared by water quenching step b；
d：Ball mill crushing after mixture C drying prepared by step c, crosses 600-800 mesh sieve, mixture D is made；
e：Feldspar and clay is added by formula ratio in mixture D prepared by step d, is uniformly mixed, crosses 600-800 mesh sieve, i.e., ；
The binder is dextrin solution；
The pore creating material is walnut shell；The granularity of pore creating material is 46 ~ 150 mesh.
2. a kind of preparation method of roll flute grinding wheel as described in claim 1, which is characterized in that including following operating procedure：
1）Prepare molding mass：By weight percentage composition weigh abrasive material, binder, bonding agent and pore creating material mixing sieving to get at Moulding mixture；
2）Prepare grinding wheel blank：By step 1）The molding mass of preparation is put into mold, and compression moulding is to get grinding wheel blank；
3）It is dry：Drying steps 2）Dry grinding wheel blank is made in the grinding wheel blank of preparation；
4）Sintering：Sintering step 3）The drying grinding wheel blank of preparation to get.
3. the preparation method of roll flute grinding wheel as claimed in claim 2, which is characterized in that step 3）Middle drying temperature program is： With 6.75 minutes/degree heating rate, it is warming up to 80 DEG C in 9 hours, keeps the temperature 18 hours；Again with 9 minutes/degree heating rate, 3 hours 100 DEG C are inside warming up to, keeps the temperature 15 hours；Again with 6 minutes/degree rate of temperature fall, room temperature is down in 7 hours.
4. the preparation method of roll flute grinding wheel as claimed in claim 2, which is characterized in that step 4）Middle sintering temperature program is： With 1.26 minutes/degree heating rate, 600 DEG C are warming up to by 30 DEG C in 12 hours, keeps the temperature 10 hours；With 1.5 minutes/degree heating speed Rate is warming up to 1000 DEG C in 10 hours, keep the temperature 9 hours；Again with 2 minutes/degree rate of temperature fall, 30 DEG C are cooled in 35 hours.
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CN107791163A (en) * 2017-11-21 2018-03-13 常州市好利莱光电科技有限公司 A kind of preparation method of the durable porous skive of high intensity
CN110561283B (en) * 2018-06-06 2022-07-15 江苏华东砂轮有限公司 Self-lubricating gear grinding wheel and preparation method thereof
CN109108843A (en) * 2018-08-23 2019-01-01 沈阳中科超硬磨具磨削研究所 A kind of vitrified abrasive
CN111761525A (en) * 2020-07-16 2020-10-13 重庆强泰砂轮制造有限公司 Grinding wheel under condition of heavy damage to railway rails

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