CN104907485A - Inorganic adhesive for warm box as well as preparation method and application of inorganic adhesive - Google Patents
Inorganic adhesive for warm box as well as preparation method and application of inorganic adhesive Download PDFInfo
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- CN104907485A CN104907485A CN201510340693.3A CN201510340693A CN104907485A CN 104907485 A CN104907485 A CN 104907485A CN 201510340693 A CN201510340693 A CN 201510340693A CN 104907485 A CN104907485 A CN 104907485A
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Abstract
The invention discloses an inorganic adhesive for a warm box as well as a preparation method and an application of the inorganic adhesive. The adhesive is prepared from the following materials by weight percent: 12-62% of silicate aqueous solution with modulus of 1.2-2.3, 12-62% of silicate aqueous solution with modulus of 2.4-3.5, 4-30% of lithium hydrate solution, 8-10% of phosphate aqueous solution, and the balance of water. The inorganic adhesive prepared according to the invention is high in mechanical property, good in hygroscopicity resistance and high in core making efficiency. The materials are non-toxic, odorless, wide in resource, low in price and good in processing property; the core making temperature is 100-150 DEG C, which is far lower than the core making temperature of a hot box and precoated sand, and the conditions are mild and environment-friendly.
Description
Technical field
The present invention relates to casting field, be specifically related to a kind of temperature core box inorganic binder and its preparation method and application.
Background technology
Current core-making technique mainly comprises cold-box process, hot box process and precoated sand coremaking, above-mentioned core-making technique all needs to adopt artificial synthetic resin to do adhesive, and existing inorganic binder, all there is complex manufacturing, mechanical property is low, the defects such as anti-moisture absorption property is poor, and the core holding time is short, impact is applied.
In prior art, patent CN201210307320.2, disclose a kind of casting silicate inorganic adhesive, the modulus of its sodium metasilicate used is 1.0-1.2, normal temperature is solid, need add in reactor and heating material is melted to boiling, then adds organic modifiers, boric acid, sodium phosphate trimer dissolving, mixing, complex manufacturing, the adhesive mechanical property of gained is low simultaneously, sand compound poor fluidity, resistance to water soak are poor.
Summary of the invention
For solving the problem, the invention provides a kind of temperature core box inorganic binder and its preparation method and application, gained inorganic binder mechanical property is high, and resistance to water soak is good, and coremaking efficiency is high.These material non-toxic, tasteless, source is wide, low price, processing performance are good; Coremaking temperature 100-150 DEG C, far below hot box and precoated sand coremaking temperature, mild condition, environmental friendliness.
For achieving the above object, the technical scheme that the present invention takes is:
A kind of warm core box inorganic binder, is prepared from by the raw material of following mass percent: the aqueous silicate solution of the modulus 1.2-2.3 of 12%-62%; The aqueous silicate solution of the modulus 2.4-3.5 of 12%-62%; The lithium hydroxide aqueous solution of 4%-30%; 8%-10% aqueous phosphatic; Water surplus is supplied.
Preferably, be prepared from by the raw material of following mass percent: the aqueous silicate solution of the modulus 1.7-2.2 of 12%-62%; The aqueous silicate solution of the modulus 2.4-2.9 of 12%-62%; The lithium hydroxide aqueous solution of 4%-30%; The aqueous phosphatic of 8%-10%; Water surplus is supplied.
Preferably, described aqueous phosphatic is the mixture of one or more in the sodium pyrophosphate aqueous solution, the potassium pyrophosphate aqueous solution, polyphosphoric acids sodium water solution.
Preferably, described aqueous silicate solution is sodium silicate aqueous solution.
For solving the problem, present invention also offers a kind of preparation method of temperature core box inorganic binder, comprising the steps:
The aqueous silicate solution of the modulus 1.2-2.3 of S1, production solids content in advance 49%-51%, the aqueous silicate solution of the modulus 2.4-3.5 of solids content 49%-51%, the lithium hydroxide aqueous solution of solids content 9%-10%, the aqueous phosphatic of solids content 6%-40%, and be respectively charged into respective storage tank;
S2, take each raw material components by formula according to claim 1;
S3, the modulus 1.2-2.3 sodium silicate aqueous solution taken by step S2 and modulus 2.4-3.5 sodium silicate aqueous solution constant displacement pump are squeezed in agitator tank, after stirring and evenly mixing, quantitatively add the lithium hydroxide aqueous solution mixing that step S2 takes, quantitatively add the aqueous phosphatic mixing that step S2 takes again, finally add water, adjust viscosity between 15-40mPas, discharging.
The present invention has following beneficial effect:
Gained inorganic binder mechanical property is high, and resistance to water soak is good, and coremaking efficiency is high.These material non-toxic, tasteless, source is wide, low price, processing performance are good; Coremaking temperature 100-150 DEG C, far below hot box and precoated sand coremaking temperature, mild condition, significantly can improve coremaking (type) working condition, and ensure the healthy environmental friendliness of Field Force, adhesive volatile matter is few, can ensure casting quality; Compare with organic binder, be conducive to environmental protection.
Detailed description of the invention
In order to make objects and advantages of the present invention clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
This is concrete implement in each component of inorganic binder in comparative example and embodiment prepare by the following method:
By the sodium metasilicate 1500g of modulus 1.8 and water 1380g, load GSH3L autoclave, start stirring, be warmed up to 180 DEG C, insulation 1h, obtains sodium silicate aqueous solution, is labeled as S
1; By the sodium metasilicate 1500g of modulus 1.98 and water 1380g, load GSH3L autoclave, start stirring, be warmed up to 180 DEG C, insulation 1h, obtains sodium silicate aqueous solution, is labeled as S
2; By the sodium metasilicate 1500g of modulus 2.1 and water 1380g, load GSH3L autoclave, start stirring, be warmed up to 180 DEG C, insulation 1h, obtains sodium silicate aqueous solution, is labeled as S
3; By the sodium metasilicate 1500g of modulus 2.4 and water 1380g, load GSH3L autoclave, start stirring, be warmed up to 180 DEG C, insulation 1h, obtains sodium silicate aqueous solution, is labeled as S
4; By the sodium metasilicate 1500g of modulus 2.6 and water 1380g, load GSH3L autoclave, start stirring, be warmed up to 180 DEG C, insulation 1h, obtains sodium silicate aqueous solution, is labeled as S
5; By the sodium metasilicate 1500g of modulus 2.8 and water 1380g, load GSH3L autoclave, start stirring, be warmed up to 180 DEG C, insulation 1h, obtains sodium silicate aqueous solution, is labeled as S
6; In 3L plastic cup, add 2000g running water, stir by JB-200 type electric blender, 200g lithium hydroxide is added in cup, lithium hydroxide is all dissolved in water, obtains lithium hydroxide aqueous solution, be labeled as L
1; In 1L plastic cup, add 300g running water, stir by JB-200 type electric blender, 200g potassium pyrophosphate is added in cup, potassium pyrophosphate is all dissolved in water, obtains the potassium pyrophosphate aqueous solution, be labeled as P
1; Add in 300g running water in 1L plastic cup, stir by JB-200 type electric blender, 48g sodium polyphosphate is added in cup, sodium polyphosphate is all dissolved in water, obtains polyphosphoric acids sodium water solution, be labeled as P
2; In 1L plastic cup, add 300g running water, stir by JB-200 type electric blender, 18g sodium pyrophosphate is added in cup, sodium pyrophosphate is all dissolved in water, obtains the sodium pyrophosphate aqueous solution, be labeled as P
3.
Comparative example 1
S is added in 1L plastic cup
1300g, stirs by JB-200 type electric blender; Add P again
115g, running water 55g stirs evenly, and recording viscosity is 34mpa.s.Obtain inorganic binder and be labeled as D
1;
Comparative example 2
S is added in 1L plastic cup
6300g, stirs by JB-200 type electric blender; Add P again
115g, running water 55g stirs evenly, and recording viscosity is 35mpa.s.Obtain inorganic binder and be labeled as D
2;
Embodiment 1
S is added in 1L plastic cup
1150g, S
5150g, stirs and evenly mixs by JB-200 type electric blender; Add L again
165g, stirs evenly; Add P again
115g, running water 25g stirs evenly, and recording viscosity is 29mpa.s.Obtain inorganic binder and be labeled as W
1;
Embodiment 2
S is added in 1L plastic cup
2100g, S
6200g, stirs and evenly mixs by JB-200 type electric blender; Add L again
155g, stirs evenly; Add P again
112.5g, P
27.5g running water 30g stirs evenly, and recording viscosity is 30mpa.s.Obtain inorganic binder and be labeled as W
2.
Embodiment 3
S is added in 1L plastic cup
3110g, S
4190g, stirs and evenly mixs by JB-200 type electric blender; Add L
160g, stirs evenly; Add P again
110g, P
27g, P
318g running water 11g stirs evenly, and recording viscosity is 32mpa.s.Obtain inorganic binder and be labeled as W
3.
Embodiment 4
Great Lin washed-out sand 1000g, inorganic binder w
120g, zirconium matter gaseous oxidation silicon 6g, mix with laboratory blade puddle mixer, coremaking sand composition is loaded blasting unit, standard " 8 " type sample experiment mould heats 100 DEG C in advance, under 0.6Mpa, with compressed air, coremaking sand composition is injected standard " 8 " type sample experiment mould, under 0.2Mpa, the hot-air of 120--150 DEG C is blown into standard " 8 " type sample experiment mould, gassing time 30s, open box and get core, manufacture 15 cores, by hydraulic test machine testing " 8 " type sample tensile strength, instant tensile strength is surveyed in 60s, remove a peak, a minimum, get the mean value of all the other 3 samples, after 4h test specimens cool after tensile strength, remove a peak, a minimum, gets the mean value of all the other 3 samples.The drier added water under 5 samples are put into dividing plate, covers tightly, and place 24h, tested for tensile strength, removes a peak, and a minimum, gets the mean value of all the other 3 samples.Test data counts table 1.
Embodiment 5
Great Lin washed-out sand 1000g, inorganic binder w
220g, zirconium matter gaseous oxidation silicon 6g, mix with laboratory blade puddle mixer, coremaking sand composition is loaded blasting unit, standard " 8 " type sample experiment mould heats 100 DEG C in advance, under 0.6Mpa, with compressed air, coremaking sand composition is injected standard " 8 " type sample experiment mould, under 0.2Mpa, the hot-air of 120--150 DEG C is blown into standard " 8 " type sample experiment mould, gassing time 30s, open box and get core, manufacture 15 cores, by hydraulic test machine testing " 8 " type sample tensile strength, instant tensile strength is surveyed in 60s, remove a peak, a minimum, get the mean value of all the other 3 samples, after 4h test specimens cool after tensile strength, remove a peak, a minimum, gets the mean value of all the other 3 samples.The drier added water under 5 samples are put into dividing plate, covers tightly, and place 24h, tested for tensile strength, removes a peak, and a minimum, gets the mean value of all the other 3 samples.Test data counts table 1.
Embodiment 6
Great Lin washed-out sand 1000g, inorganic binder w
320g, zirconium matter gaseous oxidation silicon 6g, mix with laboratory blade puddle mixer, coremaking sand composition is loaded blasting unit, standard " 8 " type sample experiment mould heats 100 DEG C in advance, under 0.6Mpa, with compressed air, coremaking sand composition is injected standard " 8 " type sample experiment mould, under 0.2Mpa, the hot-air of 120--150 DEG C is blown into standard " 8 " type sample experiment mould, gassing time 30s, open box and get core, manufacture 15 cores, by hydraulic test machine testing " 8 " type sample tensile strength, instant tensile strength is surveyed in 60s, remove a peak, a minimum, get the mean value of all the other 3 samples, after 4h test specimens cool after tensile strength, remove a peak, a minimum, gets the mean value of all the other 3 samples.The drier added water under 5 samples are put into dividing plate, covers tightly, and place 24h, tested for tensile strength, removes a peak, and a minimum, gets the mean value of all the other 3 samples.Test data counts table 1.
Embodiment 7
Great Lin washed-out sand 1000g, inorganic binder D
120g, zirconium matter gaseous oxidation silicon 6g, mix with laboratory blade puddle mixer, coremaking sand composition is loaded blasting unit, standard " 8 " type sample experiment mould heats 100 DEG C in advance, under 0.6Mpa, with compressed air, coremaking sand composition is injected standard " 8 " type sample experiment mould, under 0.2Mpa, the hot-air of 120--150 DEG C is blown into standard " 8 " type sample experiment mould, gassing time 30s, open box and get core, manufacture 15 cores, by hydraulic test machine testing " 8 " type sample tensile strength, instant tensile strength is surveyed in 60s, remove a peak, a minimum, get the mean value of all the other 3 samples, after 4h test specimens cool after tensile strength, remove a peak, a minimum, gets the mean value of all the other 3 samples.The drier added water under 5 samples are put into dividing plate, covers tightly, and place 24h, tested for tensile strength, removes a peak, and a minimum, gets the mean value of 3 all the other samples.Test data counts table 1.
Embodiment 8
Great Lin washed-out sand 1000g, inorganic binder D
220g, zirconium matter gaseous oxidation silicon 6g, mix with laboratory blade puddle mixer, coremaking sand composition is loaded blasting unit, standard " 8 " type sample experiment mould heats 100 DEG C in advance, under 0.6Mpa, with compressed air, coremaking sand composition is injected standard " 8 " type sample experiment mould, under 0.2Mpa, the hot-air of 120--150 DEG C is blown into standard " 8 " type sample experiment mould, gassing time 30s, open box and get core, manufacture 15 cores, by hydraulic test machine testing " 8 " type sample tensile strength, instant tensile strength is surveyed in 60s, remove a peak, a minimum, get the mean value of all the other 3 samples, after 4h test specimens cool after tensile strength, remove a peak, a minimum, gets the mean value of all the other 3 samples.The drier added water under 5 samples are put into dividing plate, covers tightly, and place 24h, tested for tensile strength, removes a peak, and a minimum, gets the mean value of 3 all the other samples.Test data counts table 1.
Table 1 inorganic binder mechanical property contrasts
The inorganic binder D that modulus is low is proved from the mechanical property contrast of table 1
1mechanical property is good, but anti-moisture absorption property is poor; The inorganic binder D that modulus is high
2mechanical property is slightly poor, and anti-moisture absorption property is good.The inorganic binder W of compound mode number
2mechanical property is high, and anti-moisture absorption property is good.The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a warm core box inorganic binder, is characterized in that, is prepared from by the raw material of following mass percent: the aqueous silicate solution of the modulus 1.2-2.3 of 12%-62%; The aqueous silicate solution of the modulus 2.4-3.5 of 12%-62%; The lithium hydroxide aqueous solution of 4%-30%; 8%-10% aqueous phosphatic; Water surplus is supplied.
2. one temperature core box inorganic binder according to claim 1, is characterized in that, be prepared from by the raw material of following mass percent: the aqueous silicate solution of the modulus 1.7-2.2 of 12%-62%; The aqueous silicate solution of the modulus 2.4-2.9 of 12%-62%; The lithium hydroxide aqueous solution of 4%-30%; The aqueous phosphatic of 8%-10%; Water surplus is supplied.
3. one temperature core box inorganic binder according to claim 1, is characterized in that, described aqueous phosphatic is the mixture of one or more in the sodium pyrophosphate aqueous solution, the potassium pyrophosphate aqueous solution, polyphosphoric acids sodium water solution.
4. one temperature core box inorganic binder according to claim 1, it is characterized in that, described aqueous silicate solution is sodium silicate aqueous solution.
5. a preparation method for warm core box inorganic binder, is characterized in that, comprise the steps:
The aqueous silicate solution of the modulus 1.2-2.3 of S1, production solids content in advance 49%-51%, the aqueous silicate solution of the modulus 2.4-3.5 of solids content 49%-51%, the lithium hydroxide aqueous solution of solids content 9%-10%, the aqueous phosphatic of solids content 6%-40%, and be respectively charged into respective storage tank;
S2, take each raw material components by formula according to claim 1;
S3, the modulus 1.2-2.3 sodium silicate aqueous solution taken by step S2 and modulus 2.4-3.5 sodium silicate aqueous solution constant displacement pump are squeezed in agitator tank, after stirring and evenly mixing, quantitatively add the lithium hydroxide aqueous solution mixing that step S2 takes, quantitatively add the aqueous phosphatic mixing that step S2 takes again, finally add water, adjust viscosity between 15-40mPas, discharging.
6. the application of a kind of temperature core box inorganic binder as described in any one of claim 1-4, is characterized in that, for warm core box coremaking.
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| KR20200026924A (en) * | 2017-06-30 | 2020-03-11 | 휴테네스 알베르투스 케미쉐 베르케 게엠베하 | Method for producing molding material mixture and mold body thereof in casting industry, and kits for use in the method |
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| KR102481928B1 (en) | 2017-06-30 | 2022-12-27 | 휴테네스 알베르투스 케미쉐 베르케 게엠베하 | Method for manufacturing molding material mixtures and mold bodies thereof in the foundry industry, and kits for use in the method |
| JP7296326B2 (en) | 2017-06-30 | 2023-06-22 | ヒュッテネス－アルベルトゥス ヒェーミッシェ ヴェルケ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Method for producing molding compound mixtures and moldings thereof in the foundry industry as well as kits for use in this method and apparatus for use in this method |
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