CN106769279A - A kind of method for preparing ceramic shell sample - Google Patents
A kind of method for preparing ceramic shell sample Download PDFInfo
- Publication number
- CN106769279A CN106769279A CN201611030520.2A CN201611030520A CN106769279A CN 106769279 A CN106769279 A CN 106769279A CN 201611030520 A CN201611030520 A CN 201611030520A CN 106769279 A CN106769279 A CN 106769279A
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- sample
- ceramic
- resin sample
- resin
- molding sand
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
Abstract
The invention belongs to fragile material forming technique and Quality Control Technology field, and in particular to a kind of method for preparing ceramic shell sample.The method includes following processing steps：Prepare the sample with given shape groove；The ceramic slurry of precision-investment casting is sprayed and covered to the surface with reeded resin sample successively with ceramic molding sand；Slurry and molding sand on resin sample surface is struck off；Above-mentioned sprinkling and curettage step are repeated until being completely filled in groove；Dewaxed after with wire netting, resin sample is wrapped up and calcining process；Wire netting removal is obtained final product into required ceramic shell sample.The present invention being capable of ceramic shell sample of the rapid, high volume preparation with given shape with size；The ceramic shell specimen size high precision of preparation, surface smoothness is good；The ceramic shell sample loose and porous inner surface of preparation, the structure with ceramic shell in investment precision casting technology is identical, the ceramic shell performance that can truly reflect in precision-investment casting actual production.
Description
Technical field
The invention belongs to fragile material forming technique and Quality Control Technology field, and in particular to one kind prepares ceramic shell
The method of sample.
Background technology
Precision-investment casting typically refers to be made apperance with fusible material, in apperance Surface coating also known as " lost-wax casting "
If dried layer refractory material is made shell, then apperance is melted into exclusion from shell, ceramic-mould is obtained after high-temperature roasting
It is filled the founding method of cast.Therefore the height of ceramic-mould quality is great to the yield impact of precision-investment casting,
It is badly in need of measuring the performance parameters such as intensity, elastic modelling quantity, the thermal coefficient of expansion of ceramic shell using appropriate method of testing
And control.
Current ceramic material property measurement method of parameters is required to sample has specific shape and size, and such as bending resistance is strong
Degree measurement request ceramic sample is necessary for the cuboid of 5 × 5 × 40mm, and thermal coefficient of expansion measurement request ceramic sample is necessary for Ф
The cylinder of 10 × 25mm.And the geomery of the ceramic shell prepared using precision-investment casting method is difficult to control to, it is impossible to
It is directly used in mechanics parameter test, ceramic shell low intensity poor toughness in addition, clamping and pole in process on lathe
Easy brittle failure, therefore cannot also utilize the method for machining be processed on the basis of the ceramic shell of existing preparation to obtain.Patent " pottery
Fracture toughness specimen preparation method (the patent No. of ceramic material：CN 104316372A) " disclose a kind of system of ceramic material sample
Preparation Method, the method is to pour into the mould of specific inner chamber ceramic size, is made by dry and sintering.Although the method energy
The ceramic sample of given shape is accessed, but it is poor with the fired mold precision casting type shell preparation technology of " slurry-stucco-drying of splashing "
Not larger, the sample prepared is more fine and close, and the performance data obtained with the sample measurement can not reflect that precision-investment casting is given birth to
Produce actual.Due to lacking qualified test sample, the performance measurement work of ceramic shell is difficult to carry out, and hinders precision-investment casting
The research of moulding shell technology of preparing and lifting work.
The content of the invention
It is an object of the invention to propose a kind of method for preparing ceramic shell sample, the method energy rapid, high volume prepares special
Determine the ceramic shell sample of geomery, solve precision-investment casting ceramic shell and be difficult into because matter is crisp with specific shape
The sample of shape size requirement, so as to the problem of performance test can not be carried out.
To reach above-mentioned purpose, the technical solution adopted by the present invention is as follows：
1st step, a resin sample with given shape groove is prepared using Laser Rapid Prototyping Technique；
2nd step, the ceramic size by viscosity number in the range of 10~75s is splashed in resin sample, rotates resin sample
Make ceramic size uniform fold in resin sample surface, then ceramic molding sand uniformly splashed on the ceramic size of sample surfaces,
The resin sample that ceramic size and ceramic molding sand will be coated with stands 2~5min in isoperibol；
3rd step, is struck off the ceramic size in the reeded one side of resin sample band with ceramic molding sand with guarded blade utility knife,
Retain the ceramic size and ceramic molding sand in groove, then the resin sample is stood into 8~12h in isoperibol；
4th step, repeats above-mentioned 2nd step and the 3rd step until the groove is filled out completely by ceramic size with ceramic molding sand
It is full；
5th step, ceramic size is splashed in the resin sample obtained in the 4th step, and rotation resin sample makes in resin sample
Ceramic size uniform fold 2~5min is stood in isoperibol in resin sample surface, then by resin sample；
6th step, is struck off the ceramic size on the sample surfaces with guarded blade utility knife, retains the ceramic size in groove, will
The sample stands 40~48h in isoperibol；
7th step, is all wrapped up the ceramic size and molding sand of the sample and residual with wire netting, is made shell
Model；
8th step, electric dewaxing treatment is carried out by the shell model being made in the 7th step；
9th step, will carry out high-temperature roasting in the 8th step by the shell model of electric dewaxing treatment, and wire netting is removed after coming out of the stove
Obtain final product required ceramic shell sample.
Described resin sample is polystyrene resin sample.
The isoperibol is：Temperature control is in 20~25 DEG C, ventilated environment of the relative humidity control 20~30%.
The present invention is had the advantage that with beneficial effect：
The present invention prepares resin sample using laser fast forming technique, and the geomery of sample further groove is flexibly adjustable,
Can rapid, high volume prepare given shape required standard sample, meet the requirement of multiple performance measurement experiment；Using the present invention
The dimension control of the ceramic shell sample of preparation within ± 0.2mm, surface roughness Ra≤6.3, can reduce due to
The measurement error that sample reason causes, it is ensured that the accuracy of measurement data；How empty the ceramic shell sample internal defect of preparation is, with
The structure of ceramic shell is identical in investment precision casting technology, and the performance data obtained using this sample testing can truly be reflected
Ceramic shell performance in precision-investment casting actual production；This method is simple and easy to apply, and preparation qualification rate is high, with obvious warp
Ji property and practicality, can apply to most of precision-investment casting ceramic shell material.
Brief description of the drawings
Fig. 1 is the schematic diagram of the resin sample shell model with cuboid groove in the embodiment of the present invention one.
Fig. 2 is the schematic diagram of the resin sample shell model with cylindrical groove in the embodiment of the present invention two.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.
The present invention is comprised the technical steps that：
1st step, a resin sample 1 with given shape groove 1b is prepared using Laser Rapid Prototyping Technique；
2nd step, the ceramic size by viscosity number in the range of 10~75s is splashed in resin sample, rotates resin sample
Make ceramic size uniform fold in resin sample surface, then ceramic molding sand uniformly splashed on the ceramic size of sample surfaces,
The resin sample that ceramic size and ceramic molding sand will be coated with stands 2~5min in isoperibol；
3rd step, with guarded blade utility knife by the ceramic size on the one side 1a of the fluted 1b of resin sample band and ceramic molding sand
Strike off, retain the ceramic size and ceramic molding sand in groove 1b, then the resin sample is stood into 8~12h in isoperibol；
4th step, repeats above-mentioned 2nd step and the 3rd step until the groove 1b is complete with ceramic molding sand by ceramic size
Fill up；
5th step, ceramic size is splashed in the resin sample obtained in the 4th step, and rotation resin sample makes in resin sample
Ceramic size uniform fold 2~5min is stood in isoperibol in resin sample surface, then by resin sample；
6th step, is struck off the ceramic size on the sample surfaces 1a with guarded blade utility knife, retains the ceramic slurry in groove 1b
Material, 40~48h is stood by the sample 1 in isoperibol；
7th step, is all wrapped up the ceramic size and molding sand 2 of the sample 1 and residual with wire netting, is made type
Shell model；
8th step, electric dewaxing treatment is carried out by the shell model being made in the 7th step；
9th step, will carry out high-temperature roasting in the 8th step by the shell model of electric dewaxing treatment, and wire netting is removed after coming out of the stove
Obtain final product required ceramic shell sample.
Embodiment 1
1st step, polystyrene sample 1 is prepared using Laser Rapid Prototyping Technique, the overall size of the sample for 20 ×
50 × 30mm, comprising two rectangular recess 1b of 5 × 5 × 40mm in the one side of sample；
2nd step, by viscosity number for the yittrium oxide slurry of 50s is sprayed in resin sample, while rotating resin sample makes oxygen
Change yttrium slurry uniform fold in resin sample surface, untill yittrium oxide slurry does not re-form drop；Again by yittrium oxide molding sand
It is sprayed on the ceramic size of sample surfaces, yittrium oxide molding sand is covered uniformly, until yittrium oxide type while rotating resin sample
Untill sand is no longer adhered to, the resin sample that will be coated with yittrium oxide slurry and yittrium oxide molding sand stands 2 in isoperibol~
5min；
3rd step, with guarded blade utility knife by the yittrium oxide slurry and yittrium oxide on the one side 1a of the fluted 1b of resin sample band
Molding sand strikes off, and retains yittrium oxide slurry and yittrium oxide molding sand in groove 1b, then the resin sample is quiet in isoperibol
Put 8~12h；
4th step, repeats above-mentioned 2nd step and the 3rd step until the groove 1b is oxidized yttrium slurry and yittrium oxide molding sand
It is fully filled with；
5th step, yittrium oxide slurry is splashed in the resin sample obtained in the 4th step, and rotation resin sample makes resin sample
On yittrium oxide slurry uniform fold 2~5min is stood in isoperibol in resin sample surface, then by resin sample；
6th step, is struck off the yittrium oxide slurry on the sample surfaces 1a with guarded blade utility knife, retains the oxidation in groove (1b)
Yttrium slurry, 40~48h is stood by the sample 1 in isoperibol；
7th step, is all wrapped up the yittrium oxide slurry and yittrium oxide molding sand 2 of the sample 1 and residual with wire netting
Come, be made yittrium oxide shell model；
8th step, the yittrium oxide shell model that will be obtained in the 7th step carries out electric dewaxing treatment in chamber type electric resistance furnace, dewaxing
Temperature is 300 DEG C, and the dewaxing time is 1h；
9th step, will carry out high-temperature roasting by the yittrium oxide shell model of electric dewaxing treatment in the 8th step in continuous tunnel furnace,
Wire netting is removed after coming out of the stove and obtains final product required yittrium oxide investment shell sample.
The isoperibol is：Temperature is 20 DEG C, and relative humidity is 20% ventilated environment.
Embodiment 2
1st step, polystyrene sample 1 is prepared using Laser Rapid Prototyping Technique, the overall size of the sample for 20 ×
50 × 30mm, comprising two cylinder shape groove 1b of Φ 10 × 25 in the one side of sample；
2nd step, by viscosity number for the alumina slurry of 14s is sprayed in resin sample, while rotating resin sample makes oxygen
Change aluminum slurry uniform fold in resin sample surface, untill alumina slurry does not re-form drop；Again by bauxite molding sand
It is sprayed on the ceramic size of sample surfaces, bauxite molding sand is covered uniformly, until bauxite type while rotating resin sample
Untill sand is no longer adhered to, the resin sample that will be coated with alumina slurry and bauxite molding sand stands 2 in isoperibol~
5min；
3rd step, with guarded blade utility knife by the alumina slurry and bauxite on the one side 1a of the fluted 1b of resin sample band
Molding sand strikes off, and retains alumina slurry and bauxite molding sand in groove 1b, then the resin sample is quiet in isoperibol
Put 8~12h；
4th step, repeats above-mentioned 2nd step and the 3rd step until the groove 1b is oxidized aluminum slurry and bauxite molding sand
It is fully filled with；
5th step, alumina slurry is splashed in the resin sample obtained in the 4th step, and rotation resin sample makes resin sample
On alumina slurry uniform fold 2~5min is stood in isoperibol in resin sample surface, then by resin sample；
6th step, is struck off the alumina slurry on the sample surfaces 1a with guarded blade utility knife, retains the oxidation in groove (1b)
Aluminum slurry, 40~48h is stood by the sample 1 in isoperibol；
7th step, is all wrapped up the alumina slurry and bauxite molding sand 2 of the sample 1 and residual with wire netting
Come, be made alumina type shell model；
8th step, electric dewaxing treatment is carried out by the alumina type shell model obtained in the 7th step in chamber type electric resistance furnace, dewaxing
Temperature is 300 DEG C, and the dewaxing time is 1h；
9th step, will carry out high-temperature roasting by the alumina type shell model of electric dewaxing treatment in the 8th step in continuous tunnel furnace,
Wire netting is removed after coming out of the stove and obtains final product required aluminum oxide investment shell sample.
The isoperibol is：Temperature is 22 DEG C, and relative humidity is 25% ventilated environment.
Claims (3)
1. a kind of method for preparing ceramic shell sample, it is characterised in that
1st step, a resin sample (1) with given shape groove (1b) is prepared using Laser Rapid Prototyping Technique；
2nd step, the ceramic size by viscosity number in the range of 10~75s is splashed in resin sample, and rotation resin sample makes pottery
Porcelain slurry uniform fold is uniformly splashed on the ceramic size of sample surfaces in resin sample surface, then by ceramic molding sand, will be wrapped
The resin sample for being covered with ceramic size and ceramic molding sand stands 2~5min in isoperibol；
3rd step, with guarded blade utility knife by the ceramic size in the one side (1a) of the resin sample band fluted (1b) and ceramic molding sand
Strike off, retain the ceramic size and ceramic molding sand in groove (1b), then the resin sample stands in isoperibol 8~
12h；
4th step, repeats above-mentioned 2nd step and the 3rd step until the groove (1b) is filled out completely by ceramic size with ceramic molding sand
It is full；
5th step, ceramic size is splashed in the resin sample obtained in the 4th step, and rotation resin sample makes the pottery in resin sample
Porcelain slurry uniform fold stands 2~5min in resin sample surface, then by resin sample in isoperibol；
6th step, is struck off the ceramic size on the sample surfaces (1a) with guarded blade utility knife, retains the ceramic slurry in groove (1b)
Material, 40~48h is stood by the sample (1) in isoperibol；
7th step, is all wrapped up the ceramic size and molding sand (2) of the sample (1) and residual with wire netting, is made type
Shell model；
8th step, electric dewaxing treatment is carried out by the shell model being made in the 7th step；
9th step, will carry out high-temperature roasting in the 8th step by the shell model of electric dewaxing treatment, wire netting is removed after coming out of the stove and is obtained final product
Required ceramic shell sample.
2. a kind of method for preparing ceramic shell sample according to claim 1, it is characterised in that described resin sample
It is polystyrene resin.
3. a kind of method for preparing ceramic shell sample according to claim 1, it is characterised in that the isoperibol
For：Temperature control is in 20~25 DEG C, ventilated environment of the relative humidity control 20~30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611030520.2A CN106769279A (en) | 2016-11-16 | 2016-11-16 | A kind of method for preparing ceramic shell sample |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611030520.2A CN106769279A (en) | 2016-11-16 | 2016-11-16 | A kind of method for preparing ceramic shell sample |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283028A (en) * | 2018-11-14 | 2019-01-29 | 中国航发动力股份有限公司 | A kind of detection investment shell intensity sample and its manufacturing method and its strength detecting method |
| CN112313192A (en) * | 2018-05-15 | 2021-02-02 | 赛峰集团 | Method for manufacturing CMC parts |
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| JPH11237376A (en) * | 1998-02-19 | 1999-08-31 | Aisin Takaoka Ltd | Preparation of test sample used in measuring sphered degree of graphite |
| CN101073821A (en) * | 2007-06-19 | 2007-11-21 | 西安交通大学 | Method for casting mould core and shell integrated ceramic |
| CN101554645A (en) * | 2009-04-29 | 2009-10-14 | 山东理工大学 | Manufacturing method of lost foam casting foaming mold |
| WO2010086327A1 (en) * | 2009-01-27 | 2010-08-05 | Matthias Fockele | Device and method for producing and modifying a mould |
| CN102974761A (en) * | 2012-12-04 | 2013-03-20 | 中国航空工业集团公司北京航空材料研究院 | Preparation method for calcium zirconate formwork through titanium and titanium aluminium alloy fired mould precision casting |
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-
2016
- 2016-11-16 CN CN201611030520.2A patent/CN106769279A/en active Pending
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| JPH11237376A (en) * | 1998-02-19 | 1999-08-31 | Aisin Takaoka Ltd | Preparation of test sample used in measuring sphered degree of graphite |
| CN101073821A (en) * | 2007-06-19 | 2007-11-21 | 西安交通大学 | Method for casting mould core and shell integrated ceramic |
| WO2010086327A1 (en) * | 2009-01-27 | 2010-08-05 | Matthias Fockele | Device and method for producing and modifying a mould |
| CN101554645A (en) * | 2009-04-29 | 2009-10-14 | 山东理工大学 | Manufacturing method of lost foam casting foaming mold |
| CN102974761A (en) * | 2012-12-04 | 2013-03-20 | 中国航空工业集团公司北京航空材料研究院 | Preparation method for calcium zirconate formwork through titanium and titanium aluminium alloy fired mould precision casting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112313192A (en) * | 2018-05-15 | 2021-02-02 | 赛峰集团 | Method for manufacturing CMC parts |
| CN109283028A (en) * | 2018-11-14 | 2019-01-29 | 中国航发动力股份有限公司 | A kind of detection investment shell intensity sample and its manufacturing method and its strength detecting method |
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Application publication date: 20170531 |