CN105397029B - A kind of model casting waterglass shell side method - Google Patents
A kind of model casting waterglass shell side method Download PDFInfo
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- CN105397029B CN105397029B CN201511022940.1A CN201511022940A CN105397029B CN 105397029 B CN105397029 B CN 105397029B CN 201511022940 A CN201511022940 A CN 201511022940A CN 105397029 B CN105397029 B CN 105397029B
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- sepiolite
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- sand
- powder
- waterglass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
- B22C9/043—Removing the consumable pattern
Abstract
The present invention relates to a kind of model casting waterglass shell side methods, which is characterized in that fireproof coating is smeared on wax-pattern, wherein the main component of the fireproof coating is broken obtained sepiolite clinker after sepiolite ore calcination.The present invention uses key component of the sepiolite clinker as refractory material, and manufactured finished product fire resistance and intensity are fine；The present invention uses specific technological design, and varigrained sepiolite is selected to carry out shell processed as dope layer and layer of sand, and technological design is reasonable, and raw material is single is easy to get；Sepiolite abundance, the high-alumina fly to substitute rare exhaustion can save scarce resource, reinforcing layer shell number can be made to reduce 1-2 layers to substitute fire clay.
Description
Technical field
The present invention relates to chemical fields, in particular to a kind of model casting waterglass shell side method.
Background technology
Model casting is also known as lost-wax casting, including presses wax, repair wax, group tree, be stained with slurry, dewaxing, casting metals liquid and post-processing
Etc. processes.Lost-wax casting be with it is waxed make the part cast wax-pattern, coating is then coated on wax-pattern, then be fired into mould.One
Fired, all fusing is lost in wax-pattern.Then stove roasting is reentered after dewaxing process sloughs wax-pattern, you can poured into a mould.
Due to the step of needing to undergo roasting, model casting sodium silicate shell needs that refractory material is added, wherein reinforcing layer
Generally use high-alumina fly, fire clay as coating.As national requirements for environmental protection is increasingly strict, high alumina mining site is petered out, anxious
Another fireproof coating need to be found.
Sepiolite has the performances such as extremely strong absorption, decoloration and dispersion, also has high thermal stability, heat-resisting quantity reachable
1500~1700 DEG C, formative nature, insulating properties, salt resistance degree are all very good.
Have in addition, the sepiolite place of production is ground, rich reserves, the north and south such as Hunan, Jiangxi, Shaanxi, Jiangsu, Hebei, Tianjin
Distribution, nearby buying can reduce the purchase cost using producer.
In view of this, special propose the present invention.
Invention content
The purpose of the present invention is to provide a kind of model casting waterglass shell side method, the method uses sepiolite conduct
Fireproof coating, fire resistance is good, and the number of plies of required smearing is less.In addition, the method is matched using specific paint ingredient,
The sepiolite for selecting specified particle size, to reach high intensity and fire resisting effect.
In order to realize that the above-mentioned purpose of the present invention, spy use following technical scheme：
The present invention relates to a kind of model casting waterglass shell side methods, and fireproof coating is smeared on wax-pattern, wherein described resistance to
The main component of fiery coating is broken obtained sepiolite clinker after sepiolite ore calcination.
Sepiolite has the performances such as extremely strong absorption, decoloration and dispersion, also has high thermal stability, heat-resisting quantity reachable
1500~1700 DEG C, formative nature, insulating properties, salt resistance degree are all very good, can be obtained using sepiolite as refractory material high-strength
The coating for spending high fire resistance can reduce shell number processed compared with fire clay.
On the other hand, sepiolite rich reserves, it is of low cost, rare high-al clay is substituted using sepiolite, can be saved
Scarce resource.
Preferably, the specific steps of the method include：
1) investment precoat is smeared on the wax-pattern, it is rear to smear the first layer of sand；
2) transition coating is smeared on the first layer of sand described in step 1), it is rear to smear the second layer of sand；
3) reinforced layered slurry is smeared on the second layer of sand described in step 2), it is rear to smear third layer of sand；
4) step 3) is repeated 2-3 times, finally adds and applies one layer of reinforced layered slurry.
Preferably, the investment precoat includes waterglass, water, powder and activating agent, wherein the powder is that sepiolite is ripe
The powder liquor ratio of feed powder, the investment precoat is 1.20-1.70, and the activating agent is OP-10, JF401 or liquid detergent.
Preferably, the sepiolite clinker Powder Particle Size in the investment precoat is 270-320 mesh.
The present invention uses the sepiolite of specified particle size to make with specific powder than allotment coating as investment precoat component
The face layer produced with the proportioning can have duplicating property well, can make the smooth no scab defect of the product surface of production.
Preferably, the investment precoat is prepared by the following method, and the sepiolite chamotte powder and waterglass are mixed
Merge stirring, the activating agent of 0.02-0.05% by weight percentage is added in whipping process, stir, is stood after the completion of stirring
1.5-2.5h。
Investment precoat is prepared using the above method in the present invention, the side in the mixed process of sepiolite chamotte powder and waterglass
The surfactant that specified weight percentage is added in side is stirred, coating can be made to be uniformly mixed, and the adhesiveness when smearing
More preferably, a period of time is stood after stirring evenly, and is conducive to mixing well for coating.
Preferably, the transition coating is identical as the investment precoat.
The sorting of the transition coating knead dough coating of the present invention and proportioning are completely the same, when being conducive to save operation
Between so that the reproducibility and stability of product are more preferable.
Preferably, the coating of the reinforcing layer includes waterglass, water, powder, wherein the powder is sepiolite chamotte powder,
The powder liquor ratio of the investment precoat is 1.25-1.75.
Preferably, the granularity of the sepiolite chamotte powder in the reinforced layered slurry is 180-200 mesh.
Preferably, the reinforced layered slurry is prepared by the following method, by the sepiolite chamotte powder and waterglass
It is mixed and stirred for, 1.5-2.5h is stood after the completion of stirring.
Preferably, the main component of first layer of sand is the sepiolite particle of 40-70 mesh；Second layer of sand it is main
Ingredient is the sepiolite particle of 20-40 mesh；The main component of the third layer of sand is the sepiolite particle of 8-12 mesh.
Compared with prior art, beneficial effects of the present invention are：
(1) present invention uses key component of the sepiolite clinker as refractory material, manufactured finished product fire resistance and intensity
Very well；
(2) present invention uses specific technological design, and varigrained sepiolite is selected to be carried out as dope layer and layer of sand
Shell processed, technological design is reasonable, and raw material is single is easy to get；
(3) sepiolite abundance, the high-alumina fly to substitute rare exhaustion can save scarce resource, resistance to substitute
Chamotte can make reinforcing layer shell number reduce 1-2 layers.
Specific implementation mode
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
Embodiment 1
Follow the steps below model casting waterglass shell
1) face layer and transition coating are prepared：With the ratio of powder liquor ratio 1.20 take 270-320 mesh sepiolite chamotte powder and
Proportion is 1.27g/cm3Water glass solution, the two is mixed and stirred for, is added by weight percentage in whipping process
0.02% activating agent OP-10, stirring stand 1.5h after the completion of stirring；
2) reinforced layered slurry is prepared：The sepiolite chamotte powder of 180-200 mesh and proportion is taken to be with the ratio of powder liquor ratio 1.25
1.30g/cm3Waterglass, the two is mixed and stirred for, stirring after the completion of stand 1.5h；
3) investment precoat is smeared on the wax-pattern, it is rear to smear the first layer of sand, wherein the main component of the first layer of sand is
The sepiolite particle of 40-70 mesh；
4) transition coating is smeared on the first layer of sand described in step 3), transition coating is identical as investment precoat, with
After smear the second layer of sand, wherein the main component of the second layer of sand is the sepiolite particle of 20-40 mesh；
5) reinforced layered slurry is smeared on the second layer of sand described in step 4), it is rear to smear third layer of sand, wherein third layer of sand
Main component be 8-12 mesh sepiolite particle；
6) step 5) is repeated 3 times, finally adds and applies one layer of reinforced layered slurry.
Embodiment 2
Follow the steps below model casting waterglass shell
1) face layer and transition coating are prepared：With the ratio of powder liquor ratio 1.70 take 270-320 mesh sepiolite chamotte powder and
Proportion is 1.60g/cm3Water glass solution, the two is mixed and stirred for, is added by weight percentage in whipping process
0.02% activating agent JF-401, stirring stand 1.5h after the completion of stirring；
2) reinforced layered slurry is prepared：The sepiolite chamotte powder of 180-200 mesh and proportion is taken to be with the ratio of powder liquor ratio 1.75
1.34g/cm3Waterglass, the two is mixed and stirred for, stirring after the completion of stand 2.5h；
3) investment precoat is smeared on the wax-pattern, it is rear to smear the first layer of sand, wherein the main component of the first layer of sand is
The sepiolite particle of 40-70 mesh；
4) transition coating is smeared on the first layer of sand described in step 3), transition coating is identical as investment precoat, with
After smear the second layer of sand, wherein the main component of the second layer of sand is the sepiolite particle of 20-40 mesh；
5) reinforced layered slurry is smeared on the second layer of sand described in step 4), it is rear to smear third layer of sand, wherein third layer of sand
Main component be 8-12 mesh sepiolite particle；
6) step 5) is repeated 3 times, finally adds and applies one layer of reinforced layered slurry.
Embodiment 3
Follow the steps below model casting waterglass shell
1) face layer and transition coating are prepared：With the ratio of powder liquor ratio 1.20 take 270-320 mesh sepiolite chamotte powder and
Proportion is 1.45g/cm3Water glass solution, the two is mixed and stirred for, is added by weight percentage in whipping process
The 0.05% white cat liquid detergent of activating agent, stirring stand 2h after the completion of stirring；
2) reinforced layered slurry is prepared：The sepiolite chamotte powder of 180-200 mesh and proportion is taken to be with the ratio of powder liquor ratio 1.50
1.32/cm3Waterglass, the two is mixed and stirred for, stirring after the completion of stand 2h；
3) investment precoat is smeared on the wax-pattern, it is rear to smear the first layer of sand, wherein the main component of the first layer of sand is
The sepiolite particle of 40-70 mesh；
4) transition coating is smeared on the first layer of sand described in step 3), transition coating is identical as investment precoat, with
After smear the second layer of sand, wherein the main component of the second layer of sand is the sepiolite particle of 20-40 mesh；
5) reinforced layered slurry is smeared on the second layer of sand described in step 4), it is rear to smear third layer of sand, wherein third layer of sand
Main component be 8-12 mesh sepiolite particle；
6) step 5) is repeated 2 times, finally adds and applies one layer of reinforced layered slurry.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Embodiment 4
Follow the steps below model casting waterglass shell
1) face layer and transition coating are prepared：With the ratio of powder liquor ratio 1.60 take 270-320 mesh sepiolite chamotte powder and
Proportion is 1.50g/cm3Water glass solution, the two is mixed and stirred for, is added by weight percentage in whipping process
0.04% activating agent OP-10, stirring stand 2h after the completion of stirring；
2) reinforced layered slurry is prepared：The sepiolite chamotte powder of 180-200 mesh and proportion is taken to be with the ratio of powder liquor ratio 1.25
1.30g/cm3Waterglass, the two is mixed and stirred for, stirring after the completion of stand 2h；
3) investment precoat is smeared on the wax-pattern, it is rear to smear the first layer of sand, wherein the main component of the first layer of sand is
The sepiolite particle of 40-70 mesh；
4) transition coating is smeared on the first layer of sand described in step 3), transition coating is identical as investment precoat, with
After smear the second layer of sand, wherein the main component of the second layer of sand is the sepiolite particle of 20-40 mesh；
5) reinforced layered slurry is smeared on the second layer of sand described in step 4), it is rear to smear third layer of sand, wherein third layer of sand
Main component be 8-12 mesh sepiolite particle；
6) step 5) is repeated 2 times, finally adds and applies one layer of reinforced layered slurry.
Embodiment 5
Follow the steps below model casting waterglass shell
1) face layer and transition coating are prepared：With the ratio of powder liquor ratio 1.50 take 270-320 mesh sepiolite chamotte powder and
Proportion is 1.30g/cm3Water glass solution, the two is mixed and stirred for, is added by weight percentage in whipping process
0.04% activating agent JF401, stirring stand 2h after the completion of stirring；
2) reinforced layered slurry is prepared：The sepiolite chamotte powder of 180-200 mesh and proportion is taken to be with the ratio of powder liquor ratio 1.25
1.32g/cm3Waterglass, the two is mixed and stirred for, stirring after the completion of stand 2h；
3) investment precoat is smeared on the wax-pattern, it is rear to smear the first layer of sand, wherein the main component of the first layer of sand is
The sepiolite particle of 40-70 mesh；
4) transition coating is smeared on the first layer of sand described in step 3), transition coating is identical as investment precoat, with
After smear the second layer of sand, wherein the main component of the second layer of sand is the sepiolite particle of 20-40 mesh；
5) reinforced layered slurry is smeared on the second layer of sand described in step 4), it is rear to smear third layer of sand, wherein third layer of sand
Main component be 8-12 mesh sepiolite particle；
6) step 5) is repeated 2 times, finally adds and applies one layer of reinforced layered slurry.
Embodiment 6
Follow the steps below model casting waterglass shell
1) face layer and transition coating are prepared：With the ratio of powder liquor ratio 1.40 take 270-320 mesh sepiolite chamotte powder and
Proportion is 1.40g/cm3Water glass solution, the two is mixed and stirred for, is added by weight percentage in whipping process
0.04% activating agent JF401, stirring stand 2h after the completion of stirring；
2) reinforced layered slurry is prepared：The sepiolite chamotte powder of 180-200 mesh and proportion is taken to be with the ratio of powder liquor ratio 1.25
1.40g/cm3Waterglass, the two is mixed and stirred for, stirring after the completion of stand 2h；
3) investment precoat is smeared on the wax-pattern, it is rear to smear the first layer of sand, wherein the main component of the first layer of sand is
The sepiolite particle of 40-70 mesh；
4) transition coating is smeared on the first layer of sand described in step 3), transition coating is identical as investment precoat, with
After smear the second layer of sand, wherein the main component of the second layer of sand is the sepiolite particle of 20-40 mesh；
5) reinforced layered slurry is smeared on the second layer of sand described in step 4), it is rear to smear third layer of sand, wherein third layer of sand
Main component be 8-12 mesh sepiolite particle；
6) step 5) is repeated 2 times, finally adds and applies one layer of reinforced layered slurry.
Using the technique shell in above example 1-6, its fire resistance of obtained finished product and intensity comply with standard, roasting
Elevated temperature strength is high afterwards, and smelting and pouring is not in metal run out (molten steel is run out of from formwork), and formwork low temperature intensity is low after cast, cleaning
Formwork is set to be easy to detach from product.
And shell processed is carried out using fire clay as material, reach same intensity and fire resisting with 1-5 of the embodiment of the present invention
Property finished product at least need to smear three layers of reinforcing layer, the present invention reduces the number of plies of reinforcing layer by comparison, without influencing performance,
Therefore labor intensity and use cost are reduced.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (5)
1. a kind of model casting waterglass shell side method, which is characterized in that fireproof coating is smeared on wax-pattern, wherein the fire resisting
The main component of coating is broken obtained sepiolite clinker after sepiolite ore calcination, and the specific steps of the method include：
1) investment precoat is smeared on the wax-pattern, it is rear to smear the first layer of sand；
2) transition coating is smeared on the first layer of sand described in step 1), it is rear to smear the second layer of sand；
3) reinforced layered slurry is smeared on the second layer of sand described in step 2), it is rear to smear third layer of sand；
4) step 3) is repeated 2-3 times, finally adds and applies one layer of reinforced layered slurry；
Wherein, the investment precoat includes waterglass, water, powder and activating agent, wherein the powder is sepiolite chamotte powder, institute
The proportion for stating waterglass is 1.27-1.60g/cm3, and the powder liquor ratio of the investment precoat is 1.20-1.70, and the activating agent is
OP-10, JF401 or liquid detergent；
Sepiolite clinker Powder Particle Size in the investment precoat is 270-320 mesh；
The reinforced layered slurry includes waterglass, water and powder, wherein the powder is sepiolite chamotte powder, the waterglass
Proportion be 1.30-1.40g/cm3, the powder liquor ratio of the reinforced layered slurry is 1.25-1.75；
The granularity of sepiolite chamotte powder in the reinforced layered slurry is 180-200 mesh；
The main component of first layer of sand is the sepiolite particle of 40-70 mesh；The main component of second layer of sand is 20-
The sepiolite particle of 40 mesh；The main component of the third layer of sand is the sepiolite particle of 8-12 mesh.
2., will according to the method described in claim 1, it is characterized in that, the investment precoat is prepared by the following method
The sepiolite chamotte powder and water glass solution are mixed and stirred for, and 0.02- by weight percentage is added in whipping process
0.05% activating agent, stirring stand 1.5-2.5h after the completion of stirring.
3. according to the method described in claim 1, it is characterized in that, the transition coating is identical as the investment precoat.
4. according to the method described in claim 1, it is characterized in that, the proportion of the waterglass is 1.30-1.34g/cm3.
5. according to the method described in claim 1, it is characterized in that, the reinforced layered slurry is prepared by the following method,
The sepiolite chamotte powder and waterglass are mixed and stirred for, 1.5-2.5h is stood after the completion of stirring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511022940.1A CN105397029B (en) | 2015-12-30 | 2015-12-30 | A kind of model casting waterglass shell side method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511022940.1A CN105397029B (en) | 2015-12-30 | 2015-12-30 | A kind of model casting waterglass shell side method |
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| CN105397029A CN105397029A (en) | 2016-03-16 |
| CN105397029B true CN105397029B (en) | 2018-11-06 |
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| CN115780745A (en) * | 2022-12-15 | 2023-03-14 | 谷城县双银机械有限责任公司 | Water glass shell making process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497105A (en) * | 2009-03-12 | 2009-08-05 | 深圳市景鼎现代科技有限公司 | Cast form water borne coating and technique for preparing the same |
| CN103495696A (en) * | 2013-10-16 | 2014-01-08 | 合肥市田源精铸有限公司 | Moulding sand containing red mud and preparation method for moulding sand |
| CN103801658A (en) * | 2014-02-17 | 2014-05-21 | 山东旗开重型机械有限公司 | Manufacturing method of ceramic mold shell |
| CN104826993A (en) * | 2015-05-13 | 2015-08-12 | 吴光英 | Precision casting method of melting mold |
-
2015
- 2015-12-30 CN CN201511022940.1A patent/CN105397029B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497105A (en) * | 2009-03-12 | 2009-08-05 | 深圳市景鼎现代科技有限公司 | Cast form water borne coating and technique for preparing the same |
| CN103495696A (en) * | 2013-10-16 | 2014-01-08 | 合肥市田源精铸有限公司 | Moulding sand containing red mud and preparation method for moulding sand |
| CN103801658A (en) * | 2014-02-17 | 2014-05-21 | 山东旗开重型机械有限公司 | Manufacturing method of ceramic mold shell |
| CN104826993A (en) * | 2015-05-13 | 2015-08-12 | 吴光英 | Precision casting method of melting mold |
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