CN1966180A - Alcohol zircon flour coating for heavy castings and its production method - Google Patents
Alcohol zircon flour coating for heavy castings and its production method Download PDFInfo
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- CN1966180A CN1966180A CN 200610022334 CN200610022334A CN1966180A CN 1966180 A CN1966180 A CN 1966180A CN 200610022334 CN200610022334 CN 200610022334 CN 200610022334 A CN200610022334 A CN 200610022334A CN 1966180 A CN1966180 A CN 1966180A
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Abstract
The invention relates to a paint used in large casting element and relative production, wherein said paint is alcohol-base zircon powder casting paint, which contains zircon at 62-75%, lithium-base at alta-mud 1-3%, deionized water at 1-3%, modified almasilate at 1-3%, nanometer clay at 0.15-0.8%, alumind at 0.020-0.08%, soluble polyester resin at 0.2-1.2%, polyvinyl butyral (PVB) at 0.1-0.8%, abietyl at 0.6-3%, industrial alcohol at 15-25%, alcohol isopropylicum at 1-5%, and aromatic solvent oil at 150#1-5%. The inventive product has high fire resistance, etc.
Description
Technical field
The present invention relates to a kind of cast paint, specifically, is a kind of alcohol zircon flour coating for heavy castings and manufacture method thereof.
Background technology
The weight equipment manufacturing industry plays vital support function as the basic industries of country in national economy.Heavy castings are as the core component of industries such as national defence, metallurgy, oil, chemical industry, power station, nuclear energy equipment, its quality level is one of key factor that directly influences these industry developments, along with the continuous development of these industries, will more and more higher requirement be proposed to the quality level of heavy castings.The coating cast paint is one important procedure in the heavy castings production process on casting mold (core) working surface, and the major function of cast paint comprises: reduce surface roughness; Prevent and reduce foundry goods scab; Improve casting mold (core) surface strength, prevent and reduce foundry goods burning into sand, sand holes defective; Control foundry goods cooling velocity prevents that foundry goods from producing shrinkage cavity, crack defect; Make casting surface alloying and grain refinement, adjust cast(ing) surface composition and surface texture, improve the serviceability of foundry goods, prolong foundry goods service life; Improve casting falling sand and cleaning efficiency, significantly reduce the casting cleaning workload, improve sand removal workman working condition.The quality of cast paint just is the direct factor that influences whether scab of foundry goods, burning into sand and cast(ing) surface fineness, casting dimension accuracy.
At present, the alcohol zircon flour coating that company of Britain Fushi section (FOSECO) produces is the representative imported product that is applicable to that heavy castings are produced, domestic also have numerous colleges and universities, scientific research in one's power enterprise in development with produce cast paint, but these domestic cast paint products exist big gap with external product technically than still, can not satisfy the technical quality requirement that heavy castings are produced, the basic dependence on import of cast paint that each heavy castings manufacturing enterprise uses.Home products is compared with imported product and is remained in following some mass defect:
1. suspension is poor.Coating is after the long period stores or transports for long-distance, and the zirconium English powder that its proportion is bigger precipitates easily and forms the hard end, needs before the use with the specific purpose tool stirring long period each component of coating is mixed again, and this uses to execution of coating and has brought trouble.
2. it is low to brush viscosity.Need add more organic solvent during construction and coating is transferred to could brush to such an extent that open than low viscosity, so cause every thinly all over the coating layer thickness of brushing gained, and a large amount of nip sand mold brings harm.
3. brushability is poor.Feel is not smooth during brushing, and hairbrush whenever dips in a coating and comes backwash just to feel several times to send out puckery to feel nervous, and the brushing operation is wasted time and energy, and has increased brushing labour intensity, has reduced brushing efficient, can not satisfy the requirement that heavy castings sand mold/core large tracts of land is brushed.
4. levelability is poor.Because the coating levelability is poor, coating levelling is automatically brushed the brush mark that is produced, and stays significantly brush mark after causing coating to light drying, and the cast(ing) surface that making casts comes out is more coarse, is unfavorable for improving the surface quality of foundry goods.
Though, disclose a kind of name at Chinese patent and be called " mould coating made of lithium bentonite and zirconite powder " (application number: 86105456), also disclose a kind of name and be called " alcohol radical or water base sand powder penetration-prevention cast paint " (application number: 200510018167), but its quality and technical index performance still has certain gap with the imported product ratio, show that suspension is relatively poor, easily sink to the bottom and harden, the brushing difficulty, levelability is poor, is not suitable for using in the heavy castings production.
Therefore, exploitation high-quality cast paint narrows the gap, import substitution, and the competitiveness of raising cast paint and foundry goods is the instant problem of needing solution badly that current domestic foundry industry faces.
Summary of the invention
The technical problem to be solved in the present invention is: develop a kind of heavy castings cast paint, the raw material that this formulation for coating material adopts, can improve the stability of product, make its excellence aspect performance indications such as storage property, suspension, brushability, levelability, can the substituting import one product, solve the problem of the long-term dependence on import of cast paint that China uses in heavy castings manufacturing enterprise.
Technical scheme of the present invention is as follows:
A kind of alcohol zircon flour coating for heavy castings, this coating is made by following raw materials according set of dispense ratio:
Zirconium English powder 62～75%, lithium bentonite 1～3%, deionized water 1～3%, modification Magnesiumaluminumsilicate 1～3%, nanoscale thickener (clay) 0.15～0.8%, alundum (Al 0.02～0.08%, water-soluble polyester resin 0.2～1.2%, polyvinyl butyral resin (PVB) 0.1～0.8%, rosin 0.6～3%, industrial alcohol 15～25%, isopropyl alcohol 1～5%, heavy aromatic solvent oil 150#1～5%.
Above-mentioned alcohol zircon flour coating for heavy castings, preferably the set of dispense by following weight compares:
Zirconium English powder 65～75%, lithium bentonite 1.3～2%, deionized water 1.3～2%, modification Magnesiumaluminumsilicate 1.3～2%, nanoscale clay 0.3～0.7%, alundum (Al 0.04～0.06%, water-soluble polyester resin 0.4～0.8%, polyvinyl butyral resin (PVB) 0.3～0.8%, rosin 1～2%, industrial alcohol 20～25%, isopropyl alcohol 1.8～3%, heavy aromatic solvent oil 150# 2.5～3.5%.
Described part material requires to reach following index:
Zirconium English powder: ZrO
2〉=65%, Fe
2O
3≤ 0.10%, TiO
2≤ 0.05%, particle mean size 325 orders.
Lithium bentonite: H
2O≤10%, expansion capacity 〉=20ml/g.
Modification Magnesiumaluminumsilicate: average original particle size 0.1um.
Industrial alcohol: ethanol 〉=98%.
Polyvinyl butyral resin: purity 〉=96%, vinyl butyral base 66～84%, viscosity (being coated with cup No. 1) 10s.
The manufacture method of above-mentioned alcohol zircon flour coating for heavy castings comprises the steps:
One. pretreatment of raw material
(1). mix in the lithium bentonite of formula ratio and deionized water ratio, leave standstill more than the 24h in the closed container of packing into, lithium bentonite is fully activated in 1: 1 (weight ratio);
(2). in formula ratio nanoscale clay and the industrial alcohol ratio in 1: 5 (weight ratio) is mixed, high-speed stirred 20～30min makes in the nanoscale thickener pregel and the closed container of packing into and leaves standstill more than the 24h;
(3). take by weighing the modification Magnesiumaluminumsilicate of formula ratio, join in the industrial alcohol of its 3 times of weight, high-speed stirred 20～30min makes uniform modification Magnesiumaluminumsilicate pregel and changes over to and leaves standstill more than the 24h in the closed container;
(4). take by weighing the industrial alcohol of 1 times of weight of rosin formula ratio, put in the closed container, add rosin gradually,, make 50% rosin ethanolic solution 60～80 ℃ of stirring and dissolving;
(5). take by weighing the polyvinyl butyral resin of formula ratio, by stirring and dissolving, make 10% polyvinyl butyral resin ethanolic solution, leave standstill more than the 48h with industrial alcohol.
Two. preparation coating
1.. the surplus alcohol after isopropyl alcohol, heavy aromatic solvent oil 150# and the pretreatment of raw material of formula ratio is mixed, make mixed solvent;
2.. in container, add modification lithium bentonite, step 80～90% mixed solvents 1. that above-mentioned steps (1) fully activates, high-speed stirred, treating does not have coarse grain in the system, when being viscid levigelinite, stop to stir, behind the alundum (Al of adding formula ratio, the modification Magnesiumaluminumsilicate pregel of above-mentioned steps (3), above-mentioned steps (2) the nanoscale thickener pregel, continue high-speed stirred 10～20min, make composite suspension agent;
3.. step composite suspension agent is 2. ground 3～5 times with colloid mill;
4.. in ground composite suspension agent, add 50% rosin ethanolic solution of above-mentioned steps (4), 10% polyvinyl butyral resin ethanolic solution of step (5) and the water-soluble polyester resin of formula ratio, high-speed stirred 5～10min, the zirconium English powder that under stirring, adds formula ratio then gradually, add the back and continue high-speed stirred 5～10min, make the coating predispersion;
5.. the coating predispersion grinds 1～2 time with colloid mill;
6.. will grind scattered coating and regulate viscosity to 16～40s (being coated with cup No. 6), get product with the 1. remaining mixed solvent of above-mentioned steps.
Described high-speed stirred is rotating speed 〉=1000r/mim.
Described modification Magnesiumaluminumsilicate adopts pure dissolubility thickening suspending agent, " pacifies lattice 50 " as trade name etc.
By the coating that technique scheme makes, its key technical indexes reaches as follows:
Performance indications
Proportion (g/cm
3) 2.0～2.20
PH value 7.0～9.0
Viscosity (is coated with the 6# cup, s) 〉=16
24h suspension (%) 〉=99
Gas forming amount (1000 ℃, ml/g)≤20
Igloss amount (%)≤2.6
The high temperature crack resistance (1200 ℃, 2min) flawless
Coating of the present invention has following remarkable result:
1. anti-stick sand ability is strong.Be applied to molten steel weight more than 10t, wall thickness surpasses the casting production of the heavy castings of 800mm, and cast(ing) surface does not have scab behind the shake out.
2. suspension excellence.The 24h suspension reaches more than 99%, and coating has only slight layering through long term storage or after transporting for long-distance, and easily coating is mixed during construction.Particularly the suspension index of this product is much higher than the corresponding index of national mechanical industry standard JB/T9226-1999 " sand casting coating ".
3. can brush the viscosity height.The prior art dope viscosity is brushed difficulty more than 20s (being coated with the 6# cup), need to add more organic solvent diluting before the use, coating of the present invention can not add organic solvent dilution before using, and viscosity is also brushed more than 30s (being coated with cup No. 6) easily, and the dry coating thickness of a gained of every brush is thick.For the large-scale steel-casting that requires to apply than thick coating, use product of the present invention can reduce the brushing pass, thereby enhance productivity.
4. brushability is good.Hairbrush whenever dips in a deuterzooid coating and comes backwash still feel is smooth more than 10 times, makes that to brush operation time saving and energy saving, thereby has reduced brushing labour intensity, has improved brushing efficient.The suitable especially requirement that the heavy castings sand mold/the core large tracts of land is brushed.
5. good leveling property.Hairbrush whenever dips in coating and comes backwash coating levelling automatically still more than 10 times, obtains not having brush mark, smooth smooth dry coating, and the cast(ing) surface that casting is come out is highly polished, has improved the surface quality of foundry goods.
Coating of the present invention shows through application test repeatedly: fire resistance is good, and anti-stick sand ability is strong, and suspension, brushability, levelability are excellent especially, and combination property is better than domestic like product, alternative similar imported product.And coating products of the present invention is compared with similar imported product price approximately and is hanged down 1/3rd.
Coating products of the present invention also is applicable to medium and small foundry goods.
The specific embodiment
Embodiment one
1. fill a prescription (unit: kilogram): zirconium English powder 65, lithium bentonite 1, deionized water 1, modification Magnesiumaluminumsilicate (trade name " peace lattice 50 ") 1, nanoscale clay 0.15, rosin 0.8, water-soluble polyester resin 0.32, polyvinyl butyral resin 0.3, alundum (Al 0.02, industrial alcohol 25, isopropyl alcohol 2.4, heavy aromatic solvent oil 150#3.
2. pretreatment of raw material
(1) 1 kilogram of lithium bentonite and deionized water are mixed for 1 kilogram, leave standstill more than the 24h in the closed container of packing into, lithium bentonite is fully activated; (2) 0.15 kilogram of nanoscale clay is even in stirrer for mixing with 0.75 kilogram of industrial alcohol, (rotating speed 〉=1000r/mim) stir 20～30min is made in the nanoscale thickener pregel and the closed container of packing into and is left standstill more than the 24h at a high speed; (3) 1 kilogram of modification Magnesiumaluminumsilicate is added in 3 kilograms of industrial alcohol, stir 20～30min, make uniform modification Magnesiumaluminumsilicate pregel and change over to and leave standstill more than the 24h in the closed container in the mixer high speed; (4) 0.8 kilogram of industrial alcohol is put in the closed container, added 0.8 kilogram of rosin gradually,, make 50% rosin ethanolic solution 70 ℃～75 ℃ stirring and dissolving; (5) polyvinyl butyral resin is used the industrial alcohol stirring and dissolving for 0.3 kilogram, makes 10% polyvinyl butyral resin ethanolic solution, leaves standstill more than the 48h.
3. preparation coating
1.. the surplus alcohol after 2.4 kilograms of isopropyl alcohols, 3 kilograms of heavy aromatic solvent oil 150# and the pretreatment of raw material is mixed, make mixed solvent; 2.. in container, add the lithium bentonite of fully activation, 90% mixed solvent, (rotating speed 〉=1000r/mim) stirs at a high speed, treating does not have coarse grain in the system, when being viscid levigelinite, stop to stir, behind the modification Magnesiumaluminumsilicate pregel of 0.02 kilogram of alundum (Al of adding, pretreatment of raw material, the nanoscale thickener pregel, continue high-speed stirred 10～20min, make composite suspension agent.3.. will go up composite suspension agent and grind 3～5 times with colloid mill; 4.. in ground composite suspension agent, add 0.32 kilogram of 50% rosin ethanolic solution, 10% polyvinyl butyral resin ethanolic solution and water-soluble polyester resin, high-speed stirred 5～10min, under stirring, add 65 kilograms in zirconium English powder then gradually, add the back and continue high-speed stirred 5～10min, make the coating predispersion; 5.. the coating predispersion is ground 1～2 time with colloid mill; 6.. will grind scattered coating and regulate viscosity to 16～40s (being coated with the 6# cup), get product with remaining mixed solvent.
Embodiment two
1. fill a prescription (unit: kilogram): zirconium English powder 75, lithium bentonite 1, deionized water 1, modification Magnesiumaluminumsilicate 1 (trade name " peace lattice 50 "), nanoscale clay 0.8, rosin 1.12, water-soluble polyester resin 0.2, polyvinyl butyral resin 0.8, alundum (Al 0.08, industrial alcohol 15, isopropyl alcohol 2, heavy aromatic solvent oil 150#2.
2. pretreatment of raw material
(1) 1 kilogram of lithium bentonite and deionized water are mixed for 1 kilogram, leave standstill more than the 24h in the closed container of packing into, lithium bentonite is fully activated; (2) 0.8 kilogram of nanoscale clay and 4 kilograms of industrial alcohol is even in stirrer for mixing, at a high speed (the stir about 25min of rotating speed 〉=1000r/mim), make pregel and the closed container of packing in leave standstill more than the 24h; (3) the modification Magnesiumaluminumsilicate is 1 kilogram, joins in 3 kilogram weights the industrial alcohol, and (the stir about 25min of rotating speed 〉=1000r/mim) makes uniform pregel and changes over to and leaves standstill more than the 24h in the closed container at a high speed at mixer; (4) 1.12 kilograms of industrial alcohol are placed closed container, add 1.12 kilograms of rosin gradually,, make 50% rosin ethanolic solution 75 ℃ of left and right sides stirring and dissolving; (5) polyvinyl butyral resin is used the industrial alcohol stirring and dissolving for 0.8 kilogram, makes 10% polyvinyl butyral resin ethanolic solution, leaves standstill more than the 48h.
3. preparation coating
1.. the surplus alcohol after 2 kilograms of isopropyl alcohols, heavy aromatic solvent oil 150#2 kilogram and the pretreatment of raw material is mixed, make mixed solvent; 2.. in container, add the lithium bentonite of fully activation, 90% mixed solvent, (rotating speed 〉=1000r/mim) stirs at a high speed, treating does not have coarse grain in the system, when being viscid levigelinite, stop to stir, behind the modification Magnesiumaluminumsilicate pregel of 0.08 kilogram of alundum (Al of adding, pretreatment of raw material, the nanoscale thickener pregel, continue the about 13min of high-speed stirred, make composite suspension agent; 3.. composite suspension agent is ground 4 times with colloid mill; 4.. in ground composite suspension agent, add 0.2 kilogram of 50% rosin ethanolic solution, 10% polyvinyl butyral resin ethanolic solution and water-soluble polyester resin, the about 8min of high-speed stirred, under stirring, add 75 kilograms in zirconium English powder then gradually, add the back and continue the about 8min of high-speed stirred, make the coating predispersion; 5.. predispersion grinds 1～2 time with colloid mill: 6.. and will grind scattered coating and regulate viscosity to 16～40s (being coated with cup No. 6), get product with remaining mixed solvent.
Embodiment three
1. fill a prescription (unit: kilogram): zirconium English powder 70, lithium bentonite 2, ionized water 2, modification Magnesiumaluminumsilicate (trade name " peace lattice 50 ") 2, nanoscale clay 0.5, rosin 1.8, water-soluble polyester resin 0.16, polyvinyl butyral resin 0.5, alundum (Al 0.05, industrial alcohol 18, isopropyl alcohol 1.5, heavy aromatic solvent oil 150#1.4.
2. pretreatment of raw material
(1) 2 kilograms of lithium bentonites and deionized water are mixed for 2 kilograms, leave standstill more than the 24h in the closed container of packing into, lithium bentonite is fully activated; (2) 0.5 kilogram of nanoscale clay and industrial alcohol are mixed at mixer for 2.5 kilograms, at a high speed (the stir about 28min of rotating speed 〉=1000r/mim), make pregel and the closed container of packing in leave standstill more than the 24h; (3) the modification Magnesiumaluminumsilicate is 2 kilograms, joins in 6 kilograms the industrial alcohol, at the about 28min of mixer high-speed stirred, makes uniform pregel and changes over to and leave standstill more than the 24h in the closed container; (4) rosin is put for 1.8 kilograms and is added 1.8 kilograms of industrial alcohol in the closed container gradually, 65 ℃ of left and right sides stirring and dissolving, makes 50% rosin ethanolic solution; (5) polyvinyl butyral resin is used the industrial alcohol stirring and dissolving for 0.5 kilogram, make 10% polyvinyl butyral resin ethanolic solution, leave standstill more than the 48h.
3. preparation coating
1.. the surplus alcohol after 1.5 kilograms of isopropyl alcohols, heavy aromatic solvent oil 150#1.4 kilogram and the pretreatment of raw material is mixed, make mixed solvent; 2.. add lithium bentonite, 90% mixed solvent of fully activation at container, (rotating speed 〉=1000r/mim) stirs at a high speed, treating does not have coarse grain in the system, when being viscid levigelinite, stop to stir, behind the modification Magnesiumaluminumsilicate pregel of 0.05 kilogram of alundum (Al of adding, pretreatment of raw material, the nanoscale thickener pregel, continue the about 15min of high-speed stirred, make composite suspension agent; 3.. composite suspension agent is ground 5 times with colloid mill; 4.. in ground composite suspension agent, add 50% rosin ethanolic solution, 10% polyvinyl butyral resin ethanolic solution and 0.16 kilogram of water-soluble polyester resin, high-speed stirred 8min, under stirring, add 70 kilograms in zirconium English powder then gradually, add the back and continue the about 6min of high-speed stirred, make the coating predispersion; 5.. the coating predispersion is ground 1～2 time with colloid mill; 6.. will grind scattered coating and regulate viscosity to 16～40s (being coated with the 6# cup), get product with remaining mixed solvent.
By the coating that the various embodiments described above prescription and preparation method make, its major technique is as shown in table 1.
The key technical indexes of table 1 coating of the present invention
| Performance | Index |
| Proportion (g/cm 3) pH value viscosity/S (being coated with the 6# cup) 24h suspension (%) gas forming amount/(ml/g) (1000 ℃ of igloss amounts (%) sudden-heat crack resistance (1200 ℃, 2mim) | 2.0～2.20 7.0～8.0 〉=16 〉=99≤20≤2.6 I levels |
By table 1 as seen, the suspension index of this coating is much higher than the corresponding index of national standard JB/T 9226-1999 " sand casting coating ".Coating only has slight layering and can not form " the hard end " through long-term storage or long-distance transport, need only stir a little and just can construct, and suspendability is very excellent.
The below routine by experiment effect that further specifies coating of the present invention
Experimental example one
Coating of the present invention (LD101 alcohol zircon flour coating) and Britain Fushi section (FOSECO) similar coating are in Chinese Large-Scale Equipment base---and casting subsidiary factory of Second Group company has carried out key property test and production contrast test, and its situation is as follows:
1. key property test
Take the method for random sampling, extract about 3KG coating sample and carried out the test of following key property, result such as following table 2:
The test result of table 2 key property
| The coating title | Viscosity (Φ 6mm)/s | Suspension % | Density (weighing method) g/cm3 | Solids content % | Igloss amount % | Gas forming amount ml/g | 1200 ℃ 30 of high temperature crack resistance ' | |
| 2h | 24h | |||||||
| The LD101 alcohol zircon flour coating | 31′28″ | 99 | 99 | 2.05 | 72.4 | 2.2 | 19.83 | Flawless |
| The FOSECO alcohol zircon flour coating | 38′60″ | 99 | 99 | 2.11 | 73.7 | 2.6 | 19.27 | Flawless |
The viscosity of LD101 coating than the similar coating of company of Britain Fushi section low slightly outside, other performance indications do not have significant difference.
2. produced on-site test
Select each a kind on high-pressure inner cylinder class foundry goods, heavy wall class foundry goods respectively, compare test at its crust.
High-pressure inner cylinder class foundry goods is selected job number: 256549, and figure number: 73D, 013,003, first part of doing experiment of high-pressure inner cylinder.This foundry goods net weight: 8390KG; Gross weight; 11000KG; Molten steel gross weight: 19800KG.This foundry goods has certain representativeness in various cylinder body class foundry goods.
Heavy wall class foundry goods is selected job number: A63606, figure number: YD140-3-3, the medium size vee-block part of doing experiment.This foundry goods net weight: 8850KG; Gross weight; 10300KG; Molten steel gross weight: 19700KG.The maximum thermal center Φ of this foundry goods 850mm, rising head diameter of phi 1100mm has certain representativeness in heavy wall class foundry goods.
The appearance surfaces of (not going up shakeout) behind the foundry goods drawing, the surface at two kinds of coating positions (foundry goods both side surface) is all bright and clean, do not have scab phenomenon, foundry goods both sides appearance surfaces no significant difference substantially.
3. conclusion
Test shows with produced on-site by above-mentioned key property test: LD101 coating sample provided by the present invention is compared with the alcohol zircon flour coating of company of Britain Fushi section, aspect suspension, brushability, flammability, high temperature crack resistance, anti-stick grittiness, no significant difference; Surface state at the equal following foundry goods of producing of experimental condition is as broad as long basically.
Experimental example two
Coating of the present invention the like product of pilot product and company of Britain Fushi section in the casting of the mainstream product back-up chock of casting subsidiary factory of Chinese Second Group company electric furnace shop and 14000MN hydraulic press weightening finish seat is produced, carried out contrast test with identical execution conditions, promptly two kinds of coating are respectively brushed 1/2 area on same sand mold, back-up chock brushing 3 times, coating layer thickness is 1.0～1.2mm, hydraulic press weightening finish seat sand mold brush 5 times, coating layer thickness is 1.8～2.0mm, the pouring molten steel amount of test casting reaches more than the 20t, and thickest reaches 0.8m.Result of the test shows: this coating application property is good, has thick and not puckery, sliding during brushing and characteristics that do not drop down, and cast back coating produces appropriate sintering, and coating is peeled off from cast(ing) surface easily behind the shake out, has reduced the sand removal workload; Two kinds of coating gained surface quality of continuous castings are equally matched, and are all smooth smooth, phenomenons such as pore-free, burning into sand, scab.Therefore, the combination property of this coating can satisfy the design production requirement of heavy castings near international most advanced level.
Claims (5)
1. an alcohol zircon flour coating for heavy castings is characterized in that, this coating is made by the raw material of following weight ratio:
Zirconium English powder 62～75%, lithium bentonite 1～3%, deionized water 1～3%, modification Magnesiumaluminumsilicate 1～3%, nanoscale clay 15～0.8%, alundum (Al 0.02～0.08%, water-soluble polyester resin 0.2～1.2%, polyvinyl butyral resin 0.1～0.8%, rosin 0.6～3%, industrial alcohol 15～25%, isopropyl alcohol 1～5%, heavy aromatic solvent oil 150#1～5%.
2. by the described coating of claim 1, it is characterized in that this coating is made by the set of dispense ratio of following weight:
Zirconium English powder 65～70%, lithium bentonite 1.3～2%, deionized water 1.3～2%, modification Magnesiumaluminumsilicate 1.3～2%, nanoscale clay 0.3～0.7%, alundum (Al 0.04～0.06%, water-soluble polyester resin 0.4～0.8%, polyvinyl butyral resin 0.3～0.6%, rosin 1～2%, industrial alcohol 20～25%, isopropyl alcohol 1.8～3%, heavy aromatic solvent oil 150#2.5～3.5%.
3. by claim 1 or 2 described coating, it is characterized in that described modification Magnesiumaluminumsilicate adopts pure dissolubility thickening suspending agent " peace lattice 50 ".
4. the manufacture method of the described alcohol zircon flour coating for heavy castings of claim 1 comprises the steps:
One. pretreatment of raw material
(1). by formula ratio lithium bentonite and the deionized water weight ratio by 1: 1 is mixed, leave standstill more than the 24h in the closed container of packing into, lithium bentonite is fully activated;
(2). by formula ratio nanoscale clay and the industrial alcohol weight ratio by 1: 5 is mixed, high-speed stirred 20～30min makes in the nanoscale thickener pregel and the closed container of packing into and leaves standstill more than the 24h;
(3). take by weighing the modification Magnesiumaluminumsilicate of formula ratio, join in the industrial alcohol of its 3 times of weight, high-speed stirred 20～30min, the Magnesiumaluminumsilicate pregel of making changes in another closed container and leaves standstill more than the 24h;
(4). take by weighing the rosin of formula ratio, join gradually in the closed container that contains the identical weight industrial alcohol,, make 50% rosin ethanolic solution 60～80 ℃ of stirring and dissolving;
(5). take by weighing the polyvinyl butyral resin of formula ratio, by stirring and dissolving, make 10% polyvinyl butyral resin ethanolic solution, leave standstill more than the 48h with industrial alcohol;
Two. preparation coating
1.. the surplus alcohol after isopropyl alcohol, heavy aromatic solvent oil 150# and the pretreatment of raw material of formula ratio is mixed, make mixed solvent;
2.. in container, add lithium bentonite, step 80～90% mixed solvents 1. that above-mentioned steps (1) fully activates, high-speed stirred, treating does not have coarse grain in the system, when being viscid levigelinite, stop to stir, behind the nanoscale thickener pregel of the alundum (Al of adding formula ratio, the Magnesiumaluminumsilicate pregel of above-mentioned steps (3), above-mentioned steps (2), continue high-speed stirred 10～20min, make composite suspension agent;
3.. above-mentioned steps composite suspension agent is 2. ground 3～5 times with colloid mill;
4.. in ground composite suspension agent, add 50% rosin ethanolic solution of step (4), 10% polyvinyl butyral resin ethanolic solution of step (5) and the water-soluble polyester resin of formula ratio, high-speed stirred 5～10min, the zirconium English powder that under stirring, adds formula ratio then gradually, add the back and continue high-speed stirred 5～10min, make the coating predispersion;
5.. the coating predispersion is ground 1～2 time with colloid mill;
6.. ground scattered coating and regulated viscosity to being coated with cup 16～40s No. 6, got product with the 1. remaining mixed solvent of step.
5. by the manufacture method of the described coating of claim 4, it is characterized in that high-speed stirred is rotating speed 〉=1000r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100223344A CN100418666C (en) | 2006-11-24 | 2006-11-24 | Alcohol zircon flour coating for heavy castings and its production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100223344A CN100418666C (en) | 2006-11-24 | 2006-11-24 | Alcohol zircon flour coating for heavy castings and its production method |
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| Publication Number | Publication Date |
|---|---|
| CN1966180A true CN1966180A (en) | 2007-05-23 |
| CN100418666C CN100418666C (en) | 2008-09-17 |
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| CNB2006100223344A Expired - Fee Related CN100418666C (en) | 2006-11-24 | 2006-11-24 | Alcohol zircon flour coating for heavy castings and its production method |
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| CN102139342A (en) * | 2011-03-07 | 2011-08-03 | 衡阳中钢衡重铸锻有限公司 | High-permeability sand-burning-preventing paint for casting and preparation method thereof |
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| CN103008528A (en) * | 2012-11-09 | 2013-04-03 | 兰州兰石铸造有限责任公司 | Simple alcohol-based casting coating and preparation method thereof |
| CN103949579A (en) * | 2014-04-01 | 2014-07-30 | 西安工程大学 | Alcohol radical red bayberry-shaped centrifugation radiant tube casting paint and preparation method thereof |
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| CN105499483A (en) * | 2016-01-27 | 2016-04-20 | 淄博柴油机总公司 | Light-color self-stripping casting coating and casting sand mold |
| CN106141076A (en) * | 2016-08-30 | 2016-11-23 | 阜阳市富鑫铸造机械有限公司 | A kind of nonferrous metal lost foam casting isopropyl alcohol-base paint and preparation method thereof |
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| CN107377867A (en) * | 2017-08-22 | 2017-11-24 | 汉川市石金科技有限公司 | A kind of steel moulder's paint and preparation method thereof |
| CN107377867B (en) * | 2017-08-22 | 2019-10-18 | 汉川市石金科技有限公司 | A kind of steel moulder's paint and preparation method thereof |
| CN109420736A (en) * | 2017-08-24 | 2019-03-05 | 宁夏共享化工有限公司 | Coating composition is used in casting 3D sand mold printing |
| CN107470553A (en) * | 2017-08-30 | 2017-12-15 | 马鞍山市三川机械制造有限公司 | A kind of processing method for lifting casting mould yield rate |
| CN107936701A (en) * | 2017-11-29 | 2018-04-20 | 铜陵市业永兴工贸有限责任公司 | A kind of preparation method of activated bentonite composite fibre zircon flour coating |
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| CN107971455A (en) * | 2017-12-15 | 2018-05-01 | 二重（德阳）重型装备有限公司 | Heavy castings alcohol-base paint and preparation method thereof |
| CN107971455B (en) * | 2017-12-15 | 2019-07-09 | 二重（德阳）重型装备有限公司 | Heavy castings alcohol-base paint and preparation method thereof |
| CN109320221A (en) * | 2018-11-01 | 2019-02-12 | 四川工程职业技术学院 | A kind of moltening mold castings investment precoat and preparation method thereof |
| CN110315025A (en) * | 2019-07-22 | 2019-10-11 | 宜兴市国昌轧辊有限公司 | A kind of self-control cast steel roll mould wash and preparation method thereof |
| CN112643011A (en) * | 2020-11-23 | 2021-04-13 | 安徽吉利电气设备有限公司 | Method for processing totally-enclosed cable bridge |
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