CN109365313A - A kind of method for separating of crack ceramic body - Google Patents
A kind of method for separating of crack ceramic body Download PDFInfo
- Publication number
- CN109365313A CN109365313A CN201811201941.6A CN201811201941A CN109365313A CN 109365313 A CN109365313 A CN 109365313A CN 201811201941 A CN201811201941 A CN 201811201941A CN 109365313 A CN109365313 A CN 109365313A
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- CN
- China
- Prior art keywords
- ceramic body
- crack
- ink
- ink film
- separating
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
Abstract
The present invention relates to a kind of method for separating, and in particular to a kind of method for separating of crack ceramic body.Then the method for separating of crack ceramic body of the present invention is dried, obtains the ceramic body that surface has ink film the following steps are included: (1) impregnates ceramic body to be sorted with ink；Wherein, the color of the ink is different from ceramic body；(2) ink film is not present in ceramic body of the surface obtained by grinding steps (1) with ink film to the surface of ceramic body and the ink film in crackle remains；(3) ink film for passing through crack ceramic body cracks, crack ceramic body sorting is come out.It is easily identified using the method for the present invention sorting crack ceramic body crackle, it is clean convenient for sorting crackle defective products, improve the reliability of multilayer ceramic capacitor.
Description
Technical field
The present invention relates to a kind of method for separating, and in particular to a kind of method for separating of crack ceramic body.
Background technique
In the preparation process of multilayer ceramic capacitor, due to material and processing, it is possible to create crackle defective products.Than
Such as because the bad green compact chip formation crackle caused after cutting is combined between ceramic diaphragm, for another example because of electrode in sintering process
Between ceramics shrink mismatch and crack ceramic body, for another example because in chamfer process ceramic body by excessive impact due to generate
Crackle.Crackle is typically incorporated in four sides perpendicular to internal electrode layer of ceramic body, draws the two of interior electrode wherein being formed in
The crackle of a side is traditionally known as end check, and the crackle for being formed in other two side is traditionally known as side and splits.It generally adopts at present
Manually naked eyes sorting or visual inspection machine sort crack ceramic body.But crackle is often very tiny and has no with surface of ceramic body
Significant color difference, it is not easy to it is identified, so crack ceramic body is difficult to be sorted completely, it may be to multilayer ceramic capacitor
Reliability cause adverse effect.
Summary of the invention
A kind of sorting of crack ceramic body is provided it is an object of the invention to overcome above-mentioned the deficiencies in the prior art place
Method is easily identified using this method crackle, so as to which crack ceramic body sorting is clean.
To achieve the above object, the technical scheme adopted by the invention is as follows: a kind of method for separating of crack ceramic body comprising
Following steps:
(1) ceramic body to be sorted is impregnated with ink, is then dried, obtain the ceramic body that surface has ink film；Wherein,
The color of the ink is different from ceramic body；
(2) ceramic body of the surface obtained by grinding steps (1) with ink film to the surface of ceramic body there is no ink film crackle
In ink film remain；
(3) ink film for passing through crack ceramic body cracks, crack ceramic body sorting is come out.
The preferred embodiment of method for separating as crack ceramic body of the present invention, the ink are oily ink.
The preferred embodiment of method for separating as crack ceramic body of the present invention, the ceramic body are yellow or ash
Color, the ink are black, black-and-blue or red；Alternatively, the ceramic body is black, brown or blue, the ink is white
Color or red.
The preferred embodiment of method for separating as crack ceramic body of the present invention, in the step (1), by drying in the air
Dry or drying is dried；It is highly preferred that the temperature of the drying is 80~150 DEG C.
The preferred embodiment of method for separating as crack ceramic body of the present invention, the step (2) are as follows: mixing step
Suddenly after ceramic body, abrasive material and water of the surface obtained by (1) with ink film, ink is not present in the surface that ceramic body is ground in grinder
Film and the ink film in crackle remains.
The preferred embodiment of method for separating as crack ceramic body of the present invention, the abrasive material include grounds travel；
It is highly preferred that the grounds travel is alumina powder, zirconia powder, carborundum powder or quartz sand.
The preferred embodiment of method for separating as crack ceramic body of the present invention, the abrasive material are grounds travel, institute
The stacking volume ratio for stating grounds travel and ceramic body is (10~25): 100.
The preferred embodiment of method for separating as crack ceramic body of the present invention, the abrasive material is by grounds travel and grinds
Abrading-ball composition；It is highly preferred that the grounds travel stacking volume and ceramic body and the sum of mill ball stacking volume ratio be (10~
25):100。
The preferred embodiment of method for separating as crack ceramic body of the present invention, the step (1) and step (2)
Between it is further comprising the steps of: by surface with ink film ceramic body carry out dumping processing.
The preferred embodiment of method for separating as crack ceramic body of the present invention, the temperature that the dumping is handled are
350~400 DEG C, the time is 0.5~2 hour.
Compared with prior art, the invention has the benefit that the present invention is by the significant ink of ceramic body color difference
It impregnates, so that surface of ceramic body is enclosed ink film, then ceramic body is ground, so that the ink film of surface of ceramic body is ground clean but crackle and deposit
Ink film is stayed, crackle defective products is then sorted, such crackle easily identifies, and it is clean convenient for sorting crackle defective products, it improves more
The reliability of layer ceramic capacitor.
Detailed description of the invention
Fig. 1 is the flow chart that crack ceramic body is sorted using the method for the present invention.
Specific embodiment
Purposes, technical schemes and advantages in order to better illustrate the present invention, below in conjunction with the drawings and specific embodiments pair
The present invention is described further.
Crackle on crack ceramic body is often very tiny and has no significant color difference with surface of ceramic body, it is not easy to quilt
Identification may cause adverse effect to the reliability of multilayer ceramic capacitor so crack ceramic body is difficult to be sorted completely.
In order to overcome this defect, the present invention provides a kind of method for separating of crack ceramic body, as shown in Figure 1, at of the invention one
In embodiment, the method for separating of crack ceramic body the following steps are included:
(1) ceramic body to be sorted is impregnated with ink, is then dried, obtain the ceramic body that surface has ink film；Wherein,
The color of the ink is different from ceramic body；
(2) ceramic body of the surface obtained by grinding steps (1) with ink film to the surface of ceramic body there is no ink film crackle
In ink film remain；
(3) ink film for passing through crack ceramic body cracks, crack ceramic body sorting is come out.
Using method for separating of the invention, the cracks on ceramic body remain ink marks, therefore crackle and surface of ceramic body
Apparent color difference is formed, crack ceramic body is easier to identify, thus it is easy that crack ceramic body sorting is clean, it improves more
The reliability of layer ceramic capacitor.
It should be noted that the color of only ink is different from ceramic body, could be sorted by color difference.In order to hold
The color of crack ceramic body easy to identify, ink should have significant difference with ceramic body.Those skilled in the art can be according to pottery
The color of porcelain body selects the color of ink, for example, the ink is black, blue-black when the ceramic body is yellow or grey
Color or red；Alternatively, the ink is white or red when the ceramic body is black, brown or blue.
In addition, need to sufficiently infiltrate the crackle of ceramic body when impregnating the ceramic body wait sort using ink.In order to guarantee ceramics
The crackle of body sufficiently infiltrates, and soaking time is preferably 1~5 minute.
Further, the ink is oily ink.When using oily ink, ink film is not soluble in water, will be with ink film
Ink film after ceramic body grinding in crackle is easy to be retained.
Further, it in the step (1), is dried by drying or drying；It is highly preferred that the temperature of the drying
Degree is 80~150 DEG C.Due to containing the resins such as film forming agent in ink, ink has viscosity, and part ceramic body can pass through after drying
Ink film adhesion forms bonding die.
In order to be conducive to grind, the step (2) are as follows: have ceramic body, the abrasive material of ink film in surface obtained by mixing step (1)
After water, ink film is not present in the surface that ceramic body is ground in grinder and the ink film in crackle remains.
Grinding used equipment when can be used ceramic body chamfering, such as grinder, preferably star lapping machine.It grinds
Mill speed is preferably 150~220rpm, and the ceramic body of adhesion can be made to be separated under suitable active force and surface
Ink film is removed clean, while preventing the ceramic body for belonging to non-defective unit originally from being burst apart by excessive impact force.Milling time is excellent
It is selected as 20~60 minutes, it is ensured that the ink film of surface of ceramic body is removed clean while preventing from being attached to the ink film quilt on crackle
It grinds off, and the oxidation film of electrode in surface of ceramic body when dumping is ground off to the electric conductivity of electrode in raising.
In addition, since crackle relative to surface of ceramic body more gos deep into ceramic body, the ink film of surface of ceramic body prior to
Ink film in crackle is milled away, and controlling suitable degree of grinding can grind clean by the ink film of surface of ceramic body and will split
Ink film in line remains.
It is clean in order to be easy to grind surface of ceramic body, surface of ceramic body residual stains are avoided, the abrasive material includes grinding
Powder；It is highly preferred that the grounds travel is alumina powder, zirconia powder, carborundum powder or quartz sand.
Further, the abrasive material is grounds travel, and the stacking volume ratio of the grounds travel and ceramic body is (10~25):
100。
In another embodiment of the present invention, the abrasive material is made of grounds travel and mill ball；It is highly preferred that described grind
The stacking volume and ceramic body of milling and the ratio of the sum of mill ball stacking volume are (10~25): 100.When ceramic body negligible amounts
When, it mill ball is added can increase ceramic body and be collided the chance of grinding.Mill ball is preferably alumina balls, aluminium oxide ball
There are more appropriate hardness and density, is conducive to grind and prevent damage ceramic body.It is further preferred that alumina balls is straight
Diameter is 1~4mm.
As one embodiment of the invention or the preferred embodiment of another embodiment, the step (2) are as follows: by step
(1) ceramic body, abrasive material and water mixing of the gained surface with ink film is placed in grinding pot, then grinding pot is placed in grinder
Ink film is not present in the surface for being ground to ceramic body and the ink film in crackle remains.
In order to buffer the impact force that ceramic body in process of lapping is subject to, the total volume of the ceramic body, abrasive material and water, which accounts for, to be ground
80% or more of grinding jar volume, and the volume of water accounts for 40% or more of grinding tank volume.
Further, the water is tap water.
Further, further comprising the steps of between the step (1) and step (2): surface is had to the ceramics of ink film
Body carries out dumping processing.Dumping is to heat on surface in air with the ceramic body of ink film, with partially exclude in ink film at
The resins such as film can reduce the cohesive force between the ceramic body of bonding die, and the ceramic body of adhesion is made to compare appearance during the grinding process
It easily separates, increases not after avoiding grinding there are bonding die or because the ink film that bonding die separates too late surface of ceramic body is not ground completely
Yield.
Further, the temperature of the dumping processing is 350~400 DEG C, and the time is 0.5~2 hour.Dump temperature cannot
Too high, otherwise the resin in ink film is excessively excluded, and ink film, which becomes fragile, to be even ashed, and the adhesive force on ceramic body is too small, thus
The ink film for being attached to crackle during the grinding process is easy to be worn away.
Further, in the step (3), using the ceramic body after artificial eye sorting grinding or visual inspection machine is used
Ceramic body after sorting grinding.
Embodiment 1
A kind of method for separating of crack ceramic body of the embodiment of the present invention, the sorting side of crack ceramic body described in the present embodiment
Method are as follows:
(1) ceramic body to be sorted oily ink is impregnated 1 minute, is then dried, the temperature of drying is 80 DEG C, is obtained
Has the ceramic body of ink film in surface；Wherein, the ceramic body is yellow, and the oily ink is black；
(2) ceramic body by surface obtained by step (1) with ink film carries out dumping processing, and the temperature of dumping processing is 375
DEG C, the time is 1.2 hours；
(3) ceramic body, abrasive material and the tap water by the surface of step (2) processing with ink film, which mix, is placed on grinding pot
In, then grinding pot is placed in star lapping machine to the surface for being ground to ceramic body there is no ink film and the ink film in crackle retains
Come；Wherein, the revolving speed of grinder is 150rpm, and milling time is 60 minutes；The total volume of the ceramic body, abrasive material and tap water
80% or more of grinding tank volume is accounted for, and the volume of tap water accounts for 40% or more of grinding tank volume；The abrasive material is oxidation
The stacking volume ratio of aluminium powder, the alumina powder and ceramic body is 10:100；
(4) pass through the ink film of crack ceramic body cracks, manually naked eyes come out crack ceramic body sorting.
Embodiment 2
A kind of method for separating of crack ceramic body of the embodiment of the present invention, the sorting side of crack ceramic body described in the present embodiment
Method are as follows:
(1) ceramic body to be sorted oily ink is impregnated 3 minutes, is then dried, the temperature of drying is 150 DEG C, is obtained
Has the ceramic body of ink film to surface；Wherein, the ceramic body is grey, and the oily ink is red；
(2) ceramic body by surface obtained by step (1) with ink film carries out dumping processing, and the temperature of dumping processing is 350
DEG C, the time is 2 hours；
(3) ceramic body, abrasive material and the tap water by the surface of step (2) processing with ink film, which mix, is placed on grinding pot
In, then grinding pot is placed in star lapping machine to the surface for being ground to ceramic body there is no ink film and the ink film in crackle retains
Come；Wherein, the revolving speed of grinder is 220rpm, and milling time is 20 minutes；The total volume of the ceramic body, abrasive material and tap water
80% or more of grinding tank volume is accounted for, and the volume of tap water accounts for 40% or more of grinding tank volume；The abrasive material is oxidation
The stacking volume ratio of zirconium powder, the zirconia powder and ceramic body is 18:100；
(4) pass through the ink film of crack ceramic body cracks, manually naked eyes come out crack ceramic body sorting.
Embodiment 3
A kind of method for separating of crack ceramic body of the embodiment of the present invention, the sorting side of crack ceramic body described in the present embodiment
Method are as follows:
(1) ceramic body to be sorted oily ink is impregnated 5 minutes, is then dried, the temperature of drying is 120 DEG C, is obtained
Has the ceramic body of ink film to surface；Wherein, the ceramic body is black, and the oily ink is white；
(2) ceramic body by surface obtained by step (1) with ink film carries out dumping processing, and the temperature of dumping processing is 400
DEG C, the time is 0.5 hour；
(3) ceramic body, abrasive material and the tap water by the surface of step (2) processing with ink film, which mix, is placed on grinding pot
In, then grinding pot is placed in star lapping machine to the surface for being ground to ceramic body there is no ink film and the ink film in crackle retains
Come；Wherein, the revolving speed of grinder is 180rpm, and milling time is 40 minutes；The total volume of the ceramic body, abrasive material and tap water
80% or more of grinding tank volume is accounted for, and the volume of tap water accounts for 40% or more of grinding tank volume；The abrasive material is carbonization
The stacking volume ratio of silicon powder, the carborundum powder and ceramic body is 25:100；
(4) pass through the ink film of crack ceramic body cracks, manually naked eyes come out crack ceramic body sorting.
Embodiment 4
A kind of method for separating of crack ceramic body of the embodiment of the present invention, the sorting side of crack ceramic body described in the present embodiment
Method are as follows:
(1) ceramic body to be sorted oily ink is impregnated 3 minutes, is then dried, obtain the pottery that surface has ink film
Porcelain body；Wherein, the ceramic body is blue, and the oily ink is white；
(2) ceramic body by surface obtained by step (1) with ink film carries out dumping processing, and the temperature of dumping processing is 375
DEG C, the time is 1.2 hours；
(3) ceramic body, abrasive material and the tap water by the surface of step (2) processing with ink film, which mix, is placed on grinding pot
In, then grinding pot is placed in star lapping machine to the surface for being ground to ceramic body there is no ink film and the ink film in crackle retains
Come；Wherein, the revolving speed of grinder is 180rpm, and milling time is 40 minutes；The total volume of the ceramic body, abrasive material and water, which accounts for, to be ground
80% or more of grinding jar volume, and the volume of tap water accounts for 40% or more of grinding tank volume；The abrasive material is by alumina powder
It is formed with alumina balls, the stacking volume and ceramic body of the alumina powder and the ratio of the sum of alumina balls stacking volume are 10:
100；
(4) ink film for passing through crack ceramic body cracks, is come out crack ceramic body sorting using visual inspection machine.
Embodiment 5
A kind of method for separating of crack ceramic body of the embodiment of the present invention, the sorting side of crack ceramic body described in the present embodiment
The difference of method and embodiment 4 is only that: in the present embodiment, the stacking volume and ceramic body and alumina balls accumulation body of alumina powder
The ratio of the sum of product is 25:100.
Embodiment 6
A kind of method for separating of crack ceramic body of the embodiment of the present invention, the sorting side of crack ceramic body described in the present embodiment
The difference of method and embodiment 4 is only that: in the present embodiment, the stacking volume and ceramic body and alumina balls accumulation body of alumina powder
The ratio of the sum of product is 12:100.
Embodiment 7
A kind of method for separating of crack ceramic body of the embodiment of the present invention, the sorting side of crack ceramic body described in the present embodiment
The difference of method and embodiment 1 is only that: in the ceramic body to be sorted of the present embodiment, only end check ceramic body, i.e. crackle are only
Two sides of electrode in the extraction of ceramic body are formed in without in other faces.Ceramic body side surface where the crackle of end check
There is interior electrode to draw, therefore the relatively deep inclined black of general color, in order to make the ceramic body Side Color significant difference of crackle and place,
Ink can be white, red, and be not suitable for using black, black-and-blue etc..The crackle of end check ceramic body is located at drawing for ceramic body
Two sides of interior electrode out, the two sides are also side where the external electrode of multilayer ceramic capacitor, therefore can be by envelope
The method for holding dipping, ink is only covered on the two sides of ceramic body, can without entire ceramic body is impregnated ink
To save ink.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than protects to the present invention
The limitation of range is protected, although the invention is described in detail with reference to the preferred embodiments, those skilled in the art should
Understand, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the essence of technical solution of the present invention
And range.
Claims (10)
1. a kind of method for separating of crack ceramic body, which comprises the following steps:
(1) ceramic body to be sorted is impregnated with ink, is then dried, obtain the ceramic body that surface has ink film；Wherein, described
The color of ink is different from ceramic body；
(2) ceramic body of the surface obtained by grinding steps (1) with ink film is to the surface of ceramic body there is no ink film and in crackle
Ink film remains；
(3) ink film for passing through crack ceramic body cracks, crack ceramic body sorting is come out.
2. the method for separating of crack ceramic body as described in claim 1, which is characterized in that the ink is oily ink.
3. the method for separating of crack ceramic body as described in claim 1, which is characterized in that the ceramic body is yellow or ash
Color, the ink are black, black-and-blue or red；Alternatively, the ceramic body is black, brown or blue, the ink is white
Color or red.
4. the method for separating of crack ceramic body as described in claim 1, which is characterized in that in the step (1), by drying
Or drying is dried；Preferably, the temperature of the drying is 80~150 DEG C.
5. the method for separating of crack ceramic body as described in claim 1, which is characterized in that the step (2) are as follows: mixing step
(1) after ceramic body, abrasive material and water of the gained surface with ink film, ink film is not present in the surface that ceramic body is ground in grinder
And the ink film in crackle remains.
6. the method for separating of crack ceramic body as claimed in claim 5, which is characterized in that the abrasive material includes grounds travel；It is excellent
Selection of land, the grounds travel are alumina powder, zirconia powder, carborundum powder or quartz sand.
7. the method for separating of crack ceramic body as claimed in claim 6, which is characterized in that the abrasive material is grounds travel, described
The stacking volume of grounds travel and ceramic body ratio is (10~25): 100.
8. the method for separating of crack ceramic body as claimed in claim 6, which is characterized in that the abrasive material is by grounds travel and grinding
Ball composition；Preferably, the ratio of the stacking volume and ceramic body and the sum of mill ball stacking volume of the grounds travel is (10~25):
100。
9. the method for separating of crack ceramic body as described in any one of claims 1 to 8, which is characterized in that the step (1) and
Further comprising the steps of between step (2): the ceramic body by surface with ink film carries out dumping processing.
10. the method for separating of crack ceramic body as claimed in claim 9, which is characterized in that the temperature of dumping processing is
350~400 DEG C, the time is 0.5~2 hour.
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| CN201811201941.6A CN109365313A (en) | 2018-10-15 | 2018-10-15 | A kind of method for separating of crack ceramic body |
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| CN201811201941.6A CN109365313A (en) | 2018-10-15 | 2018-10-15 | A kind of method for separating of crack ceramic body |
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