CN104889894B - Mill Corrugator roller emery wheel and its manufacture method - Google Patents
Mill Corrugator roller emery wheel and its manufacture method Download PDFInfo
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- CN104889894B CN104889894B CN201510206472.7A CN201510206472A CN104889894B CN 104889894 B CN104889894 B CN 104889894B CN 201510206472 A CN201510206472 A CN 201510206472A CN 104889894 B CN104889894 B CN 104889894B
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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
- B24D3/14—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 ceramic, i.e. vitrified bondings
- B24D3/18—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 ceramic, i.e. vitrified bondings for porous or cellular structure
-
- 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
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
-
- 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
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
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- 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
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
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- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
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- C04B2235/5276—Whiskers, spindles, needles or pins
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Abstract
The invention belongs to emery wheel and its method field of manufacturing, and in particular to one kind mill Corrugator roller emery wheel and its manufacture method.Its emery wheel is characterised by that the raw material components and weight percent content of milled portion are：Granularity is the abrasive material 68 80% of 36 mesh~120 mesh；Vitrified bond 8 15%；Pore-forming material 10 15%；Its manufacture method is characterised by that step is as follows：1) batch mixing；2) it is molded；3) dry；4) loading of kiln；5) burn till；6) blank is dried and dimensioned.The present invention has the advantages that revolving strength is big, hardness is high, structural homogenity good, static balance performance is good, perfect heat-dissipating, grinding performance is good, grinding efficiency is high, grinding accuracy is high.
Description
Technical field
The invention belongs to emery wheel and its method field of manufacturing, and in particular to one kind mill Corrugator roller emery wheel and its manufacture method.
Background technology
Corrugator roller is most important part in corrugated board production device, its diameter it is big (up to 280 to
600mm), length is (1.6 meters to 2.5 meters) long, and grinding difficulty is especially big.In recent years since, the portion of domestic package packing machine industry
Point enterprise has introduced part from developed countries such as Germany, Japan successively in order to improve the grinding accuracy and grinding efficiency of Corrugator roller
Grinding efficiency and grinding accuracy Corrugator roller numerically control grinder high, in order to improve the wearability of Corrugator roller, it is to avoid in use
There is depression or pit influence machining accuracy and service life because wearing and tearing uneven, by Corrugator roller material therefor by common
The steel alloys such as 42CrMo, 45 steel are changed to the material that hardness is high, wearability is good, such as 48CrMoA steel of the hardness higher than HRC60 and carbonization
Tungsten etc., some producers also from difficult grind materials such as the good 50CrVA of ductility, can greatly improve the service life of Corrugator roller.The mill
Bed grinding wheel graininess thin 1 to 2 grain size number of more traditional emery wheel used, tissue looseness's (gross blow hole), static balance performance requirement is high, hardness
Uniformity is good.At present, domestic mill roller abrasive wheel also has larger gap from above-mentioned requirements, can not meet use requirement, the grinding machine institute
Added than national regulations value with emery wheel requirement static balance value tight by 25% to 50%.The current grinding machine mainly uses thyrite Lay, Japan
Wu Nuo, the mill Corrugator roller emery wheel of the warm top grade foreign well-known emery wheel manufacturing enterprise of Germany, it is expensive.
Corrugator roller belongs to the good difficult grind material of hardness high ductibility, to avoid product from burning and deforming, existing domestic mill
Due to tissue looseness (organization number is 12# to 14#), the inside of emery wheel and surface distributed many stomatas, emery wheel to Corrugator roller emery wheel
Intensity it is very low, work linear velocity is difficult to reach 35m/s, and because pore-forming material distribution there is inhomogeneities and emery wheel burns till
During pore former burn lose after, the structural homogenity of emery wheel can be influenceed, the static balance performance to emery wheel causes considerable influence.
The content of the invention
Cannot meet processing request it is an object of the invention to solve the domestic mill Corrugator roller emery wheel of prior art, can only select
, there is expensive, production cost defect high in imported product, there is provided one kind mill Corrugator roller emery wheel and its manufacture method, can
Reduces cost, can meet the processing request of Corrugator roller again.
The present invention is achieved by the following technical solution：
I.e. a kind of mill Corrugator roller emery wheel, it is characterised in that the raw material components and weight percent content of milled portion are：
Granularity is the abrasive material 68-80% of 36 mesh~120 mesh；
Vitrified bond 8-15%；
Pore-forming material 10-15%.
The raw material components and weight percent content of vitrified bond of the invention are：
Abrasive material of the invention is white fused alumina or single alundum or pink fused alumina.
Abrasive material of the invention is any two kinds in white fused alumina, single alundum, pink fused alumina of combination, two kinds of mixing ratios of abrasive material
Example is 1:1 or 1：1.5.
Pore-forming material of the invention is walnut shell or apricot shell or corundum bollow ball.
Colouring agent in vitrified bond of the present invention is chromium oxide or iron oxide or cobalt oxide.
A kind of production program for grinding Corrugator roller emery wheel, it is characterised in that step is as follows：
1) batch mixing
1.1) pore-forming material is soaked using waterglass, dextrin mixed liquor, soak time 20-30 minutes；
1.2) vitrified bond is prepared；
1.3) load weighted abrasive material is put into batch mixing pot, waterglass mixing 5-6 points is added according to the 1-3% of amount of abrasive
Clock, then by the vitrified bond of mixing and dextrin pour into batch mixing pot in mix 10-20 minutes, add pore-forming material mixing 5 points
Clock, sieving；
2) it is molded
It is molded using multistation machine, first carries out slightly scraping during scraper and then essence is scraped again；
3) dry
This product uses drying curve
| Programming rate (DEG C/h) | 2.5 | 2 | 0 | 2 | 0 |
| Reach temperature (DEG C) | Room temperature | 35 | 60 | 60 | 80 |
| Section time (h) | 12.5 | 6 | 10 | 15 |
Because product tissue pine, the coefficient of expansion are big, easily there is scasoning check, therefore it is required that the product Drying Rates are low,
Dry
Dry temperature is low, and drying time is long.
4) loading of kiln
5) burn till
Sintering curve is as follows
In order to accelerate the pore-forming material volatilization after burning, it is ensured that emery wheel presentation quality, (it is in intensification first paragraph intensified negative pressure
2 times or so of other products).
6) blank is dried and dimensioned.
Present invention process step 1.1) in, waterglass：Water=1:10, dextrin is taken in 15% addition mixed liquor of total amount.
Present invention process step 1.2) in, the colouring agent in vitrified bond is used for colouring emery wheel, improves emery wheel
Outward appearance commercialization.
Present invention process step 1.3) in, dextrin is remaining the 85% of total amount.
Present invention process step 2) in, using scraper twice, it is ensured that the uniformity of scraper.
Present invention process step 4) in, dress height is piled up during loading of kiln and must not exceed 100mm；
Present invention process step 5) in, volatilized in sintering process for the ease of pore-forming material, when burning till, 400 DEG C with
Before take negative pressure, be 2 times of negative pressure of mill run.
The present invention is directed to current present situation, and research and development meet emery wheel that numerical control grinding Corrugated Roller Grinding Machine uses to replace import emery wheel.
Wheel hardness of the present invention, even tissue are consistent, and active line rate request is not less than 35m/s, and static balance value is advised than GB
Definite value adds tight 25% to 50%, and after emery wheel of the present invention, the surface roughness of grinding workpiece is brought up to by 0.8um
0.4um, grinding efficiency can improve more than 30%, solve the phenomenons such as abrasion is uneven, grinding is blocked, and extend service life.
The invention has the advantages that：
1st, the emery wheel belongs to porous grinding wheel, with good thermal diffusivity；
2nd, from the environmental protection pore-forming material such as walnut shell, apricot shell, corundum bollow ball, the thermal diffusivity of grinding process is improved, is solved
The emery wheel because of grinding burn, crackle, the low problem of grinding efficiency caused by the reason such as grinding area is big, is improved in the grinding process
Grinding accuracy；
3rd, the revolving strength of emery wheel is big, hardness is high, structural homogenity and grinding performance are good；
4th, for pore formers such as walnut shell, apricot shells, easily expansion causes emery wheel blank to rebound during abrasive wheel forming, and
The problems such as causing emery wheel crackle, thickness to be difficult to control, technical finesse is carried out to it using waterglass, dextrin liquid, it is ensured that product matter
Amount；
5th, isostatic pressing process is used, it is ensured that the structural homogenity and static balance performance of emery wheel；
6th, emery wheel is coloured using colouring agents such as chromium oxide, iron oxide, cobalt oxides, improves the outward appearance commodity of emery wheel
Change；
7th, adding ZnOw can improve the intensity and toughness of the emery wheel, emery wheel is had good shape after conditioning
Shape, come off it is uniform, to ensure to be ground the tooth form and machining accuracy of Corrugator roller.
Specific embodiment
Embodiment 1
Grinding wheel formula
| Abrasive material (pink fused alumina) | Pore former (apricot shell) | Bonding agent |
Ceramic bond agent prescription
| Kaolin powder | Feldspar powder | Boron glass powder | ZnOw | Chromium oxide |
| 31% | 42% | 16% | 5% | 6% |
In above-mentioned vitrified bond, colouring agent is chromium oxide, and product is presented green after burning till.
The step of the present embodiment, is as follows：
1. batch mixing
1.1 are soaked using waterglass, dextrin liquid to pore former, waterglass：Water=1:10, by the 15% of dextrin total amount
It is added in mixed liquor and uses；
1.2 prepare vitrified bond；
1.3 are put into batch mixing pot load weighted abrasive material, and waterglass mixing 5-6 minutes is added according to the 1-3% of amount of abrasive,
The bonding agent and dextrin (remaining 85% dextrin) for adding mixing are poured into and mixed 10-20 minutes in batch mixing pot, add pore-forming material
Material mixing 5 minutes, sieving；
2. it is molded
2.1 start multistation moulding press, will weigh accurate molding mass and pour into mould, start automatic stirring scraper
Carry out stirring scraper.Start first after automatic stirring material fork stirs evenly molding mass carries out scraper again, to ensure the uniformity of scraper, we
The one-level scraper that industry is generally used is changed to slightly scrape and the smart method for scraping two-stage scraper is carried out, and first carries out slightly scraping then essence again
Scrape；
2.2 in forming process, uses the technical controlling emery wheel blank thickness tolerance such as Lineside encoding unit, magnetic railings ruler, it is ensured that
The same group of hardness uniformity of emery wheel；
3. dry
Drying curve is as follows
Other products same specification dries curve
| Programming rate (DEG C/h) | 3 | 3 | 4 | 0 | 6 | 0 |
| Reach temperature (DEG C) | Room temperature | 35 | 50 | 78 | 78 | 102 |
| Section time (h) | 5 | 7 | 2 | 4 | 20 |
This product uses drying curve
| Programming rate (DEG C/h) | 2.5 | 2 | 0 | 2 | 0 |
| Reach temperature (DEG C) | Room temperature | 35 | 60 | 60 | 80 |
| Section time (h) | 12.5 | 6 | 10 | 15 |
Because product tissue pine, the coefficient of expansion are big, easily there is scasoning check, therefore it is required that the product Drying Rates are low,
Drying temperature is low, and drying time is long.
4. loading of kiln
4.1 on same specification emery wheel, and pile dress height must not exceed 100mm；
4.2 other：With normal product loading of kiln technique.
5. burn till
Sintering curve is as follows：
In order to accelerate the pore-forming material volatilization after burning, it is ensured that emery wheel presentation quality, (it is in intensification first paragraph intensified negative pressure
2 times or so of other products).
6. blank is dried and dimensioned
It is flat to emery wheel on same a machine tool using the full machining tool of numerical control with diamond segment during dimensioned
Face, aperture and external diameter are processed, it can be ensured that the perpendicularity and dimensioned precision of emery wheel aperture and plane；
One end face of 6.1 first processing grinding wheels, reprocessing emery wheel aperture, then in another end face of processing grinding wheel；
6.2 last reprocessing emery wheel external diameters.
Embodiment 2
Grinding wheel formula
| Abrasive material (white fused alumina) | Pore-forming material (corundum bollow ball) | Vitrified bond |
| 75% | 11% | 14% |
Ceramic bond agent prescription
| Kaolin powder | Feldspar powder | Boron glass powder | ZnOw | Iron oxide |
| 32% | 40% | 18% | 4% | 6% |
In above-mentioned vitrified bond, colouring agent is iron oxide, and product is presented faint yellow or crocus after burning till.
The processing step of the present embodiment is with embodiment 1.
Embodiment 3
Grinding wheel formula
| Abrasive material (single alundum and white fused alumina 1:1 mixing) | Pore former (walnut shell) | Vitrified bond |
| 78% | 13% | 9% |
Ceramic bond agent prescription
| Kaolin powder | Feldspar powder | Boron glass powder | ZnOw | Cobalt oxide |
| 34% | 40% | 17% | 4% | 5% |
In above-mentioned vitrified bond, colouring agent is cobalt oxide, and product is presented blue after burning till.
Index is researched and developed using emery wheel obtained in the present invention contrast as follows with GB permissible value
Obtained emery wheel of the invention is as follows with the using effect contrast of traditional emery wheel
Unit：mm
Obtained emery wheel of the invention is as follows with the research and development index contrast of traditional emery wheel：
Unit：mm
Claims (3)
1. a kind of mill Corrugator roller emery wheel, it is characterised in that the raw material components and weight percent content of milled portion are：
Granularity is the abrasive material 68-80% of 36 mesh~120 mesh；
Vitrified bond 8-15%；
Pore-forming material 10-15%；
Abrasive material is the combination of any one or any two kinds in white fused alumina or single alundum or pink fused alumina, two kinds of mixing ratios of abrasive material
Example is 1:1 or 1：1.5；
Pore-forming material is walnut shell or apricot shell or corundum bollow ball；
The raw material components and weight percent content of vitrified bond are：
2. it is according to claim 1 to grind Corrugator roller emery wheel, it is characterised in that colouring agent is chromium oxide or iron oxide or oxidation
Cobalt.
3. it is a kind of it is according to claim 1 mill Corrugator roller emery wheel preparation method, it is characterised in that step is as follows：
1) batch mixing
1.1) pore-forming material is soaked using waterglass, dextrin mixed liquor, soak time 20-30 minutes；
1.2) vitrified bond is prepared；
1.3) load weighted abrasive material is put into batch mixing pot, waterglass mixing 5-6 minutes is added according to the 1-3% of amount of abrasive, then
The vitrified bond of mixing and dextrin are poured into and is mixed 10-20 minutes in batch mixing pot, added pore-forming material and mix 5 minutes, mistake
Sieve；
2) it is molded
It is molded using multistation machine, first carries out slightly scraping during scraper and then essence is scraped again；
3) dry
Drying curve is as follows:
4) loading of kiln
5) burn till
Sintering curve is as follows：
6) blank is dried and dimensioned.
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| CN112276698A (en) * | 2020-06-30 | 2021-01-29 | 武汉钢铁有限公司 | Grinding method for controlling short scratches on surface of cold roller |
| 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 |
Citations (3)
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|---|---|---|---|---|
| CN101797724A (en) * | 2010-04-29 | 2010-08-11 | 苏州远东砂轮有限公司 | Precision grinding wheel for high-efficiency aluminum oxide ceramic microcrystalline grinding materials |
| CN103506968A (en) * | 2013-09-30 | 2014-01-15 | 梁洪奎 | Method for using plant particles as ceramic grinding wheel pore-forming agent |
| CN104015131A (en) * | 2014-06-26 | 2014-09-03 | 鲁信创业投资集团股份有限公司 | Blade part efficient and precise grinding microcrystal ceramic corundum grinding wheel and machining method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5401284A (en) * | 1993-07-30 | 1995-03-28 | Sheldon; David A. | Sol-gel alumina abrasive wheel with improved corner holding |
| US6773473B2 (en) * | 2002-11-12 | 2004-08-10 | Saint-Gobain Abrasives Technology Company | Supercritical fluid extraction |
| JP2007196317A (en) * | 2006-01-25 | 2007-08-09 | Noritake Co Ltd | Method of manufacturing vitrified superfinishing grinding wheel |
| CN102699825A (en) * | 2012-06-08 | 2012-10-03 | 天津大学 | Novel ceramic corundum grinding tool of low-temperature and high-strength ceramic bonding agent and preparation method thereof |
| CN102825560B (en) * | 2012-07-31 | 2015-06-24 | 安徽威铭耐磨材料有限公司 | Ceramic diamond grinding wheel |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101797724A (en) * | 2010-04-29 | 2010-08-11 | 苏州远东砂轮有限公司 | Precision grinding wheel for high-efficiency aluminum oxide ceramic microcrystalline grinding materials |
| CN103506968A (en) * | 2013-09-30 | 2014-01-15 | 梁洪奎 | Method for using plant particles as ceramic grinding wheel pore-forming agent |
| CN104015131A (en) * | 2014-06-26 | 2014-09-03 | 鲁信创业投资集团股份有限公司 | Blade part efficient and precise grinding microcrystal ceramic corundum grinding wheel and machining method thereof |
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Address after: 266555 Songhua Jiangxi Road, Qingdao Economic Development Zone, Shandong Province Patentee after: Sisha taililai (Qingdao) grinding Co.,Ltd. Address before: 266555 Songhua Jiangxi Road, Qingdao Economic Development Zone, Shandong Province Patentee before: QINGDAO SISA ABRASIVES Co.,Ltd. |
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