CN105819835B - A kind of grinding of nano ceramics paper pulp and its production method - Google Patents
A kind of grinding of nano ceramics paper pulp and its production method Download PDFInfo
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- CN105819835B CN105819835B CN201610135309.0A CN201610135309A CN105819835B CN 105819835 B CN105819835 B CN 105819835B CN 201610135309 A CN201610135309 A CN 201610135309A CN 105819835 B CN105819835 B CN 105819835B
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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
- 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
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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
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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
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3225—Yttrium oxide 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
- C04B2235/3231—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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
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- C04B2235/5454—Particle size related information expressed by the size of the particles or aggregates thereof nanometer sized, i.e. below 100 nm
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Abstract
The invention discloses a kind of grinding of nano ceramics paper pulp and its production methods, its raw material components includes nano aluminum corundum and nanometer fused alumina zirconia, it solves grinding poor toughness, not corrosion-resistant disadvantage, improves the service life of paper pulp grinding, realize the production of high-end nonmagnetic paper pulp；The production stage of the production method of the nano ceramics paper pulp grinding of offer includes: that (1) raw material is prepared；(2) pressure forming；(3) the static pressure compacting such as；(4) blank machines；(5) high temperature sintering；(6) grinding solves the difficult technical problem of special shape paper pulp grinding demoulding, opens up new approaches for special shape Production of Ceramics.
Description
Technical field
The present invention relates to the productions of field of papermaking paper pulp grinding, and in particular to a kind of grinding of nano ceramics paper pulp and its production
Method.
Background technique
Paper pulp grinding is fiberizer " heart ", and working environment is severe, it is desirable that it is with wearability, acid-alkali-corrosive-resisting
With the unification of high tenacity.
Paper pulp grinding at present mostly uses stainless steel or rich chromium cast iron material, stainless steel good corrosion resistance, but wear resistence is low, high
Chrome cast iron has good wear resistence, but poor corrosion resistance, and the service life of the paper pulp grinding of these materials is lower, 1-2 months will
Replacement, causes machine stop times more, high production cost also results in the waste of the precious metals such as Ni, Cr.
Enter in paper pulp after preventing the ferric ion corrosion in stainless steel or rich chromium cast iron for the grinding of nonmagnetic paper pulp, makes paper
Matter product has magnetism, is forced using stone material.But stone is a kind of fragile material, is easy to peel off in process of production broken
Block influences the quality of production of paper pulp.Also there is the experiment being ground using ceramic material paper pulp, because the brittleness of grinding can not be solved
Problem is not used widely.
Summary of the invention
The present invention provides a kind of grinding of nano ceramics paper pulp and its production method, solves existing Ceramic mill disc toughness
Difference, paper pulp are ground not corrosion-resistant disadvantage, provide a kind of corrosion resistance, wearability, high tenacity unification the grinding of ceramic paper pulp, with
The service life for improving paper pulp grinding, realizes the production of high-end nonmagnetic paper pulp.Additionally provide a kind of nano ceramics paper pulp mill
The production method of piece solves the difficult technical problem of special shape paper pulp grinding demoulding, provides for special shape Production of Ceramics
New method.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
The parts by weight of raw materials component of nano ceramics paper pulp of the present invention grinding include: 40-85 parts of nano aluminum schmigels,
15-60 parts of nanometer fused alumina zirconia powder and modified Nano no more than 5 parts aoxidize yttrium powder.
For the toughness for further increasing the grinding of nano ceramics paper pulp, parts by weight of raw materials component can also be added no more than 3 parts
Modified nano cerium oxide powder.
The production method steps of nano ceramics paper pulp grinding include:
(1) raw material configures: including nano aluminum corundum and nanometer fused alumina zirconia in raw material；
(2) just base is pressed on press machine；
(3) etc. static pressure are compacted that blank is made: the first base of step (2) pressure forming being packed into plastic film, sealing is placed on
In the water tank of isostatic pressing machine, feed-tank pressurization, pressure is no less than 100 MPa, and the retention time is not less than 5 minutes, is compacted into making
Obtain blank；
(4) blank after being compacted processes grinding tooth form by the way of machining；
(5) high temperature sintering；
(6) grinding；The Ceramic mill disc monolithic grinding fitting surface that will be sintered, is then assembled together, grinding
Processing work face.
Further, to prevent sintering warpage, the charging temperature of step (5) high temperature sintering is no more than 200 DEG C, slowly rises
Temperature, heating rate are not higher than 100 DEG C/h, keep the temperature 6-17 hour in 150 DEG C, 300 DEG C, 600 DEG C, 900 DEG C of temperature value respectively, height
1500-1600 DEG C of warm sintering temperature, soaking time 4-12 hours, the cold cooling of furnace after sintering reached 300 DEG C hereinafter, going out to furnace temperature
Furnace.
Due to using the technology described above, the beneficial effect that the present invention generates is:
The nano ceramics paper pulp grinding produced by adopting the above technical scheme, good toughness, hardness is high, and wearability is good, Ke Yinai
Acid, alkali corrosion resistance, are suitable for the manufacture operating condition of various paper pulp, since the grinding material does not contain irony, are particularly suitable for high property
Can nonmagnetic paper production.The addition of the auxiliary materials such as modified oxidized yttrium, cerium oxide improves the toughness of ceramics, can satisfy completely
It manufactures paper with pulp the working environment of paper pulp, service life improves 2-3 times.
Nano ceramics solves the brittleness problems of ceramics, conducive to the Potential performance for playing ceramic material, makes ceramic material
Intensity and toughness increase substantially, and overcome the deficiency of engineering ceramics, and frontier has been opened up in the application for Replacing engineering ceramics.
Zirconia ceramics is a kind of novel high-performance ceramics, it has the advantage that compared with traditional aluminium oxide ceramics
1) high-fracture toughness, high intensity and high rigidity, 2) excellent abrasion resistance properties, 3) elasticity modulus and thermal expansion coefficient and metal phase
Closely, 4) lower thermal conductivity.There is zirconia ceramics transformation toughening and microcrack evolution equation to be praised so having very high intensity and toughness
For " Ceramo-steel ", its fracture toughness is highest in all ceramics, has excellent normal temperature mechanical property.
On this basis, yttrium oxide is added and cerium oxide optimizes, the main function of yttrium oxide is stabilizing zirconia, main
Stablize the ultra-fine crystallite size of nano zirconium oxide powder and reasonable composition proportion, is the pass for obtaining good strength and toughness
Key.The phase transformation of zirconium oxide can be effectively controlled in the addition of cerium oxide, makes it have better thermal stability.Zirconium oxide after optimization obtains
Obtained the high rigidity of aplitic texture, the nano ceramics of high intensity and high tenacity.High rigidity, high intensity and high tenacity ensure that oxygen
Changing zircon ceramic has incomparable wearability than other traditional structure ceramics.
Since paper pulp grinding castellated shape is special, in ceramic batch production, conventional compression moulding or injection forming are not
A kind of easy mold release, production method of nano ceramics paper pulp grinding provided by the invention, solves the grinding of special shape ceramics paper pulp
The problem of can not demoulding, avoids complicated mold design, improve the grinding of special shape ceramics paper pulp production efficiency and at
Product rate provides a kind of simple production, low cost, efficient production method for special shape Production of Ceramics, sends out for the industry
Exhibition opens new approaches.
Specific embodiment
The present invention is described in further details below with reference to embodiment:
Be formulated 1.: including following raw material: 45 parts of nano aluminum corundum and 55 parts of nanometer fused alumina zirconias mixing add
1.5 parts of modified Nano yttrium oxide, is uniformly mixed again.
Be formulated 2.: including following raw material: 80 parts of nano aluminum corundum and 20 parts of nanometer fused alumina zirconias are uniformly mixed, then plus
Enter 3.5 parts of modified Nano yttrium oxide and 2.8 parts of modified nano cerium oxide.
Be formulated 3.: including following raw material: 60 parts of nano aluminum corundum and 40 parts of nanometer fused alumina zirconias are uniformly mixed, and are added
2.2 parts of modified Nano yttrium oxide and 0.5 part of modified nano cerium oxide.
The powder of above-mentioned three kinds of formulas produces the grinding of nano ceramics paper pulp as steps described below after mixing:
1, it designs ceramic paper pulp and is ground just base drawing.It carries out simplifying design according to paper pulp grinding product drawing, according to ceramics
The factors such as proportion, the sintering of powder predefine shrinkage, in addition the change in size of equal static pressure determines that ceramic paper pulp is ground just base
Outer dimension the factors such as sintering warpage amount and grinding amount need to be considered for working face.Consider demoulding, conjunction can be designed
The draw taper of reason is conducive to demoulding.
2, just base size design, production pressure forming die are ground according to ceramic paper pulp.
3, pressure forming: by nano aluminum corundum, nanometer fused alumina zirconia, modified Nano yttrium oxide, modified nano cerium oxide powder
Material is uniformly mixed by the parts by weight, is pressed into the first base of simple shape in mold with press machine.Die size design is filled
Divide and considers the processes bring change in size such as equal static pressure, high temperature sintering, grinding amount.
4, isostatic pressing: the first base of pressure forming is packed into plastic film cover, and sealing is placed on the water tank of isostatic pressing machine
Interior, feed-tank pressurization is compacted into, and static pressure pressure is waited to be no less than 100 MPa, and the retention time is not less than 5 minutes.
5, blank is processed: being processed to the grinding blank of isostatic pressing machine compacting, by complicated tooth-shape structure machine-shaping.
6, high temperature high temperature sintering: the grinding blank processed carries out high temperature sintering.Charging temperature is no more than 200 DEG C, product
Putting in furnace answer it is smooth, prevent sintering when deformation.After product placement is good, blow-on slowly heats up, and heating rate is not higher than
100 DEG C/h, 6-17 hours are kept the temperature in the different temperature sections such as 150 DEG C, 300 DEG C, 600 DEG C, 900 DEG C respectively, is gradually warmed up
1500-1600 DEG C, 4-12 hours are kept the temperature, then slow furnace is cold, when furnace temperature reaches 300 DEG C or less, can come out of the stove.
7, it refines.The Ceramic mill disc monolithic grinding fitting surface sintered, is then assembled together, grinding work
Face.Movable plate and stationary plate gap only have 0.1-0.2mm when due to paper pulp operational plate, so grinding adds after working face must assemble
Work guarantees its flatness.
8, dynamic balancing detects.Stationary plate generally it goes without doing dynamic balancing detection.Movable plate is mountable through the qualified rear of dynamic balancing detection
It uses.
It is made of the above raw material and is ground with nano ceramics paper pulp made from method, solve existing Ceramic mill disc toughness
Difference, paper pulp are ground not corrosion-resistant disadvantage, provide a kind of corrosion resistance, wearability, high tenacity unification the grinding of ceramic paper pulp
Raw material components realize the production of high-end nonmagnetic paper pulp to improve the service life of paper pulp grinding.Additionally provide a kind of nanometer
The production method of ceramic paper pulp grinding solves the difficult technical problem of special shape paper pulp grinding demoulding, makes pottery for special shape
Porcelain production developing new approaches.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that；It still may be used
To modify to technical solution documented by previous embodiment or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit and model of technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (3)
1. a kind of nano ceramics paper pulp is ground production method, production stage includes:
(1) raw material configures: parts by weight of raw materials group is divided into 40-85 part nano aluminum schmigels, 15-60 parts of nanometer fused alumina zirconia powder, little
Yttrium powder is aoxidized in 5 parts of modified Nanos；
(2) just base pressure forming: is pressed on press machine；
(3) etc. static pressure are compacted that blank is made: the first base of step (2) pressure forming being packed into plastic film, sealing, be placed on etc. quiet
In the water tank of press, feed-tank pressurization, pressure is no less than 100 MPa, and the retention time is not less than 5 minutes, is compacted into that hair is made
Base；
(4) blank after being compacted processes grinding tooth form by the way of machining；
(5) high temperature sintering: charging temperature is no more than 200 DEG C, slowly heats up, and heating rate is not higher than 100 DEG C/h, respectively 150
DEG C, 300 DEG C, 600 DEG C, 900 DEG C of temperature value keep the temperature 6-17 hours, 1500-1600 DEG C of high temperature sintering temperature, soaking time 4-12
Hour, the cold cooling of furnace after sintering reaches 300 DEG C hereinafter, coming out of the stove to furnace temperature；
(6) grinding；The Ceramic mill disc monolithic grinding fitting surface that will be sintered, is then assembled together, grinding
Working face.
2. a kind of nano ceramics paper pulp is ground production method, production stage includes:
(1) raw material configures: parts by weight of raw materials group is divided into 40-85 part nano aluminum schmigels, 15-60 parts of nanometer fused alumina zirconia powder, little
Yttrium powder, the modified nano cerium oxide powder no more than 3 parts are aoxidized in 5 parts of modified Nanos；
(2) just base pressure forming: is pressed on press machine；
(3) etc. static pressure are compacted that blank is made: the first base of step (2) pressure forming being packed into plastic film, sealing, be placed on etc. quiet
In the water tank of press, feed-tank pressurization, pressure is no less than 100 MPa, and the retention time is not less than 5 minutes, is compacted into that hair is made
Base；
(4) blank after being compacted processes grinding tooth form by the way of machining；
(5) high temperature sintering: charging temperature is no more than 200 DEG C, slowly heats up, and heating rate is not higher than 100 DEG C/h, respectively 150
DEG C, 300 DEG C, 600 DEG C, 900 DEG C of temperature value keep the temperature 6-17 hours, 1500-1600 DEG C of high temperature sintering temperature, soaking time 4-12
Hour, the cold cooling of furnace after sintering reaches 300 DEG C hereinafter, coming out of the stove to furnace temperature；
(6) grinding；The Ceramic mill disc monolithic grinding fitting surface that will be sintered, is then assembled together, grinding
Working face.
3. a kind of ceramic paper pulp grinding of nano ceramics paper pulp grinding production method production according to claim 1 or 2.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1321811A (en) * | 2001-06-13 | 2001-11-14 | 李金良 | Refiner disc specially for making paper pulp |
| CN102814755A (en) * | 2012-07-31 | 2012-12-12 | 安徽威铭耐磨材料有限公司 | Ceramic brown corundum grinding wheel |
| CN103436223A (en) * | 2013-08-22 | 2013-12-11 | 丹江口市北辰特种耐磨材料有限公司 | Alumina zirconia grinding material and processing method thereof |
-
2016
- 2016-03-10 CN CN201610135309.0A patent/CN105819835B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1321811A (en) * | 2001-06-13 | 2001-11-14 | 李金良 | Refiner disc specially for making paper pulp |
| CN102814755A (en) * | 2012-07-31 | 2012-12-12 | 安徽威铭耐磨材料有限公司 | Ceramic brown corundum grinding wheel |
| CN103436223A (en) * | 2013-08-22 | 2013-12-11 | 丹江口市北辰特种耐磨材料有限公司 | Alumina zirconia grinding material and processing method thereof |
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Inventor after: Xing Zhenguo Inventor after: Wu Xian Inventor after: Sun Zhaozhong Inventor after: Sun Qiong Inventor after: Fu Hanguang Inventor after: Tan Jianbo Inventor before: Wu Xian Inventor before: Sun Zhaozhong Inventor before: Xing Zhenguo Inventor before: Sun Qiong Inventor before: Fu Hanguang Inventor before: Tan Jianbo |