CN101698291B - Grinding wheel formula special for tobacco shredder - Google Patents

Grinding wheel formula special for tobacco shredder Download PDF

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Publication number
CN101698291B
CN101698291B CN2009102162353A CN200910216235A CN101698291B CN 101698291 B CN101698291 B CN 101698291B CN 2009102162353 A CN2009102162353 A CN 2009102162353A CN 200910216235 A CN200910216235 A CN 200910216235A CN 101698291 B CN101698291 B CN 101698291B
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China
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parts
grinding wheel
powder
grinding
abrasive material
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Expired - Fee Related
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CN2009102162353A
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Chinese (zh)
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CN101698291A (en
Inventor
袁梦霞
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Chengdu Grinding Wheel Co ltd
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Chengdu Grinding Wheel Co ltd
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Abstract

The invention relates to a formula of a grinding wheel special for a tobacco shredder. The formula comprises the following components in parts by weight: the grinding material comprises 100 parts of grinding materials, 9-13 parts of a bonding agent, 2-4 parts of dextrin powder and 3-6 parts of a wetting agent, wherein the bonding agent consists of halloysite clay powder, palygorskite powder, borax glass powder and iron oxide red, and comprises the following chemical components in percentage by weight: al 2O3:21.0~24.0%、SiO2:52.0~56.0%、Fe2O3:1.0~1.5%、B2O3:5.5~7.5%、CaO:0~0.5%、MgO:0~0.5%、K2O+Na2O: 10.0 to 14.0 percent. The grinding wheel manufactured by adopting the formula has the advantages that the refractoriness of the bonding agent is proper, the fluidity is good, the mechanical strength is high, the high-temperature wettability is good, the manufactured grinding wheel is fully liquefied with the bonding agent under the high-temperature melting acceleration, the grinding particles are uniformly included, the grinding performance of the manufactured grinding wheel is good, and the grinding precision is highAnd the service life is long.

Description

A kind of tobacco cutting machine special grinding wheel formula
Technical field:
The present invention relates to a kind of grinding wheel formula, specifically is a kind of tobacco cutting machine special grinding wheel formula.
Background technology:
Do not deposit firm chemical metallurgy on its coated metal of emery wheel commonly used and matrix and the abrasive material faying face and combines, in fact abrasive material is inlayed by mechanical embedding, thereby hold is little, and abrasive grain is loaded and heavylier is prone to come off and causes global failure; Be to increase hold and just must increase thickness of coating, its as a result the exposed height of abrasive particle chip space reduce, emery wheel stops up easily, radiating effect is poor, surface of the work is burnt easily.Present domestic emery wheel manufacturing still is unrealized, and optimal design goes out the emery wheel optimum formula by the processing conditions requirement.
Summary of the invention:
The object of the present invention is to provide a kind of production high temperature to urge tip-off and bond fully to liquefy; Even inclusion abrasive particle; The wheel grinding performance of processing is good; Grinding accuracy is high, and the grinding wheel formula of long service life and its bond have characteristics such as refractoriness is suitable, good fluidity, mechanical strength is high, the high temperature wellability is good.
The object of the invention is achieved through following technical proposals:
A kind of tobacco cutting machine special grinding wheel formula; It is characterized in that this prescription calculates by weight; Comprise 100 parts in abrasive material, 9~13 parts of bonds, 2~4 parts of dextrine powders, 3~6 parts of wetting agents; Wherein bond is made up of Xuyong clay powder, Shanglou feldspar powder, borax glass powder and iron oxide red, has the chemical composition of following weight fraction scope: Al 2O 3: 21.0~24.0%, SiO 2: 52.0~56.0%, Fe 2O 3: 1.0~1.5%, B 2O 3: 5.5~7.5%, CaO:0~0.5%, MgO:0~0.5%, K 2O+Na 2O:10.0~14.0%.
Scheme further is: to be brown corundum F60 abrasive material and white fused alumina F60 abrasive material form according to 1: 1 mixed described abrasive material;
Scheme further is: described abrasive material is a pink fused alumina F60 abrasive material;
Scheme further is: described dextrine powder is a cyclodextrin powder, and wherein ash content is less than 2.5% weight fraction, Engler viscosity 1.3~1.6 25 ℃ the time;
Scheme further is: described wetting agent is waterglass or syrup;
Scheme further is: in described grinding wheel formula, also be added with 20~46 #6~8 parts of walnut shell powders.
In this bond, the main component Al of Xuyong clay powder 2O 32SiO 2,, therefore utilize its this specific character can improve wet base of emery wheel and dry body strength because clay has the characteristic of plasticity, associativity; Simultaneously because the Xuyong clay powder is highly purified kaolinite class clay; 1700 ℃~1750 ℃ of its refractoriness, so add back scalable bond refractoriness, expansion bond sintering range, the bond sintering range is wideer; Control more easily when burning till, product quality is stable more.
In this bond, the main component of Shanglou feldspar is K 2OAl 2O 36SiO 2, the refractoriness of Shanglou feldspar is generally 1260 ℃~1280 ℃, introduces basic anhydride K through in bond, adding feldspar 2O has reduced the temperature of bond liquid phase appearance; Since feldspar urge molten effect, make that glassy phase increases in the bond, can improve the mechanical strength of grinding tool; Because feldspar belongs to lean property material,, reduce the grinding tool drying shrinkage deformation simultaneously so can reduce clay plasticity.
In this bond, the main component of borax glass is NaB 4O 7, the refractoriness of borax glass is 640 ℃~690 ℃, and it is a kind of flux of urging by force in bond, utilizes it to urge molten effect, makes the most of vitreum network that forms of bond, and this boron-containing glass body itself has higher intensity, can significantly improve the intensity of grinding tool; Its introducing can improve flowability, the wettability of bond, helps bond between abrasive material, to distribute equably, improves the grade of abrasive tool uniformity; In addition, its introducing can also improve the respond of bond, and the boracic bond can dissolve more Al in the corundum abrasive 2O 3In the entering bond, the coefficient of expansion of corundum abrasive and bond is reached unanimity, be not easy the product micro-crack in the bond bridge, highly beneficial to improving grinding tool intensity.
The iron oxide red composition is Fe in this bond 2O 3, be used to improve the fragility of bond, improve the toughness of bond.
The present invention adopts compound abrasive with bond, makes emery wheel have the strong advantage of brown corundum abrasive resisting breakage ability concurrently and has the good cutting ability of white fused alumina abrasive material again, and promptly having improved wheel life has and kept emery wheel to quenching alloy blade good grinding performance.
Adopt rose grain, utilize the high characteristics of its toughness, process the bigger material of toughness, compare with white fused alumina and can significantly improve grinding efficiency and workpiece surface roughness.
Waterglass is sodium metasilicate (Na 2On SiO 2) the aqueous solution, it can moistening preferably abrasive particle and bond, guarantees the abundant mixing of molding mass, can also improve wet, the dry body strength of grinding tool base substrate simultaneously; Because Na in the waterglass 2O content has it and urges molten effect 10~12%, can reduce the bond refractoriness, increase glass content, the raising bond respond of special-purpose bond, thereby improve the emery wheel product intensity.
Carbohydrate (the C of a kind of complicacy of syrup 6H 10O 5) n, it can improve the shaping strength of wet base greatly.
Bond intensity height and proportion are reasonable in the emery wheel; Emery wheel hardness and workpiece hardness and workpiece grinding requirement are fitted like a glove, promptly guaranteed the emery wheel security, make the emery wheel applicability good again; Can satisfy the grinding of import blade and homemade blade simultaneously, during grinding shape keep, long service life.
Add 20-46 #Behind the walnut shell powder, the porosity of emery wheel is increased to 25~30% and be evenly distributed, and helps heat radiation and chip removal during grinding, is guaranteeing can to strengthen the grinding depth of cut under the constant situation of other grinding condition, and it is high to improve grinding efficiency.
The present invention can accomplish through the emery wheel making technology of batch mixing commonly used, moulding, drying, processing and make.
Adopt the refractoriness that makes bond that this prescription makes suitably, good fluidity, mechanical strength is high, the high temperature wellability is good etc.; And the emery wheel of making urges tip-off and bond fully to liquefy at high temperature, even inclusion abrasive particle, and the wheel grinding performance of processing is good; Grinding accuracy is high, long service life.
The specific embodiment:
Below in conjunction with embodiment the present invention is further specified:
Embodiment one
A kind of tobacco cutting machine special grinding wheel formula; This prescription calculates by weight; Comprise each 50 parts in brown corundum F60 abrasive material and white fused alumina F60 abrasive material, 9~13 parts of bonds, 2~4 parts of cyclodextrin powders, 3~6 parts of waterglass; Wherein bond is made up of Xuyong clay powder, Shanglou feldspar powder, borax glass powder and iron oxide red, has the chemical composition of following weight fraction scope: Al 2O 3: 21.0~24.0%, SiO 2: 52.0~56.0%, Fe 2O 3: 1.0~1.5%, B 2O 3: 5.5~7.5%, CaO:0~0.5%, MgO:0~0.5%, K 2O+Na 2O:10.0~14.0%, the ash content of cyclodextrin powder is less than 2.5% weight fraction, Engler viscosity 1.3~1.6 25 ℃ the time.
Embodiment two
A kind of tobacco cutting machine special grinding wheel formula; This prescription calculates by weight; Comprise 100 parts in pink fused alumina F60 abrasive material, 9~13 parts of bonds, 2~4 parts of cyclodextrin powders, 3~6 parts in syrup; Wherein bond is made up of Xuyong clay powder, Shanglou feldspar powder, borax glass powder and iron oxide red, has the chemical composition of following weight fraction scope: Al 2O 3: 21.0~24.0%, SiO 2: 52.0~56.0%, Fe 2O 3: 1.0~1.5%, B 2O 3: 5.5~7.5%, CaO:0~0.5%, MgO:0~0.5%, K 2O+Na 2O:10.0~14.0%, the ash content of cyclodextrin powder is less than 2.5% weight fraction, Engler viscosity 1.3~1.6 25 ℃ the time.
Embodiment three
On the basis of embodiment one, add 20~46 #6~8 parts of walnut shell powders.
Embodiment four
On the basis of embodiment two, add 20~46 #6~8 parts of walnut shell powders.

Claims (6)

1. tobacco cutting machine special grinding wheel formula; It is characterized in that this prescription calculates by weight; Comprise 100 parts in abrasive material, 9~13 parts of bonds, 2~4 parts of dextrine powders, 3~6 parts of wetting agents; Wherein bond is made up of Xuyong clay powder, Shanglou feldspar powder, borax glass powder and iron oxide red, has the chemical composition of following weight fraction scope: Al 2O 3: 21.0~24.0%, SiO 2: 52.0~56.0%, Fe 2O 3: 1.0~1.5%, B 2O 3: 5.5~7.5%, CaO:0~0.5%, MgO:0~0.5%, K 2O+Na 2O:10.0~14.0%.
2. tobacco cutting machine special grinding wheel formula according to claim 1 is characterized in that: to be brown corundum F60 abrasive material and white fused alumina F60 abrasive material form according to 1: 1 mixed described abrasive material.
3. tobacco cutting machine special grinding wheel formula according to claim 1 is characterized in that: described abrasive material is a pink fused alumina F60 abrasive material.
4. tobacco cutting machine special grinding wheel formula according to claim 1 is characterized in that: described dextrine powder is a cyclodextrin powder, and wherein ash content is less than 2.5% weight fraction, Engler viscosity 1.3~1.6 25 ℃ the time.
5. tobacco cutting machine special grinding wheel formula according to claim 1 is characterized in that: described wetting agent is waterglass or syrup.
6. tobacco cutting machine special grinding wheel formula according to claim 1 is characterized in that: except said abrasive material, bond, dextrine powder, wetting agent, also be added with 20~46 #6~8 parts of walnut shell powders.
CN2009102162353A 2009-11-17 2009-11-17 Grinding wheel formula special for tobacco shredder Expired - Fee Related CN101698291B (en)

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CN2009102162353A CN101698291B (en) 2009-11-17 2009-11-17 Grinding wheel formula special for tobacco shredder

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Application Number Priority Date Filing Date Title
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CN101698291B true CN101698291B (en) 2012-05-16

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Publication number Priority date Publication date Assignee Title
CN108942702B (en) * 2018-07-20 2020-06-19 郑州优德工业陶瓷有限公司 Diamond wire sharpening grindstone and production method thereof
CN110193788B (en) * 2019-06-09 2021-07-23 江苏赛扬精工科技有限责任公司 Ceramic CBN grinding wheel for machining plane multi-key broach and application thereof

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