CN114309454B - Water-based paint for 3D printing sand core and preparation process thereof - Google Patents
Water-based paint for 3D printing sand core and preparation process thereof Download PDFInfo
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Abstract
The water-based paint for the 3D printing sand core is prepared by mixing composite refractory aggregate, a composite suspending agent-binder composition, a defoaming agent, a preservative and a solvent material. The composite refractory aggregate is two or more of zircon powder, white corundum powder, mullite powder, bauxite powder, kaolin powder and talcum powder; the composite suspending agent-binder composition is prepared by mixing a suspending agent, a binder, a suspending aid and a rheological aid; the defoaming agent is a nonionic alkyne diol modified surfactant; the preservative is methyl chloroisothiazolinone derivative; the solvent is water. The water-based paint disclosed by the invention is suitable for a flow coating process and a dip coating process, has excellent paint leveling property, can obviously improve the surface quality of a 3D sand core, has high coating strength, excellent suspension stability, high shelling rate after pouring, saves energy sources, protects the environment and provides a more convenient method for converting the traditional casting production enterprises into green environment-friendly production.
Description
Technical Field
The invention relates to a water-based paint and a preparation method thereof in the technical field of casting, in particular to a water-based paint and a preparation method thereof applied to casting production of 3D printing sand cores of cast steel, cast iron and nonferrous alloy.
Background
The 3D printing sand core is of a complex structure with multiple holes and multiple cavities, and due to the special forming process and the lower sand grain number, obvious stepped marks are formed on the surface of the sand core with the vertical section, and the compactness and strength of the 3D sand core are lower than those of the sand core prepared by the traditional process, so that a proper application mode and high-performance paint are selected to play a key role in improving the surface quality of castings. Because of the uniqueness of the 3D sand core structure and the surface, brushing and spraying cannot meet the application requirements, the most suitable application mode is dip coating and flow coating, and manufacturers can select dip coating or flow coating according to the shape characteristics of the sand core. The properties of dip coating paint and flow coating paint are major factors affecting the surface quality of castings, and therefore, the properties of water-based paint for 3D printing sand cores are required to be high as compared with those of water-based paint for ordinary sand cores, not only to have excellent high temperature properties such as: sand resistance, thermochemical stability, high temperature sintering peelability, low gas generation, and good normal temperature performance, such as: suspension property, leveling property, thixotropy, coating property, wear resistance, high solid content, no toxicity, no pollution and no pungent smell. At present, the water-based dip coating paint and the flow coating paint used in domestic production have unstable performances, and cannot effectively meet the high-quality requirements of the 3D printing sand core.
Disclosure of Invention
The invention aims to provide a water-based paint for a 3D printing sand core and a preparation process thereof, the invention reasonably selects the types of refractory aggregate in the paint according to the high-temperature casting characteristics of cast steel, cast iron and nonferrous alloy, the characteristics of the 3D printing sand core and the requirements of flow coating and dip coating on the paint performance, and the selected suspending agent, binder, suspending aid and rheological aid are used as core composite combination for ensuring the paint performance after special treatment, so that the paint not only can obtain good suspension property, leveling property, thixotropic property and coating property, but also can effectively reduce the solvent content and reduce the risk of the strength reduction of the sand core caused by the penetration of excessive solvent into the 3D printing sand core in the application process.
The technical scheme of the invention is as follows:
a water-based paint for 3D printing sand cores, characterized by: the water-based paint comprises the following components in percentage by weight: 70-79% of composite refractory aggregate, 5-10% of composite suspending agent-binder composition, 0.1-0.3% of defoamer, 0.2-0.5% of preservative and 15.5-23% of solvent.
The composite refractory aggregate is two or more of zircon powder, white corundum powder, mullite powder, bauxite powder, kaolin powder and talcum powder; the defoaming agent is a nonionic alkyne diol modified surfactant; the preservative is methyl chloroisothiazolinone derivative; the solvent is water.
The composite suspending agent-binder composition consists of a suspending agent, a binder, a suspending aid, a rheological aid and a solvent, wherein: the suspending agent is one or more of sodium bentonite, lithium bentonite and modified attapulgite, the binder is one or more of polyvinyl alcohol, modified silicate inorganic binder, temperature wheel glue and etherified starch, the suspending auxiliary agent is one or more of fumed silica and hydroxyethyl cellulose, and the rheological auxiliary agent is sodium lignin sulfonate; the solvent is water.
The composite suspending agent-binder composition comprises the following components in percentage by weight: 23-27% of suspending agent; 32-37% of adhesive; 1-2% of a suspending aid; 0.8-1.5% of rheological additive; 35-39% of solvent.
The suspending agent and the rheological additive adopted by the invention are a mixture of sodium bentonite, lithium bentonite, modified attapulgite, fumed silica and hydroxyethyl cellulose, so that the coating has excellent suspension property, coating property, leveling property and thixotropic property, and the requirements of dip-coating performance or flow-coating performance can be respectively met by adjusting components and proportions according to the application requirements of a customer production site. The fumed silica has small particle size, large specific surface area, strong surface adsorption capacity and good dispersion performance; the hydroxyethyl cellulose has the characteristics of excellent thickening, dispersing, water retention, glue retention and the like. After the suspending agent combination is produced and processed, the lamellar structure of montmorillonite and the needle bar structure of rectorite are tightly interwoven together under the action of the suspending aid, so that the suspending agent combination has stable suspending capability. Therefore, the dip coating paint and the flow coating paint prepared by using the suspending agent combination have excellent suspension stability, not only ensure that the paint is not layered and hardened in the transportation and storage processes, but also prevent the pipeline of the application equipment from being blocked due to the sedimentation of the paint in the use process, and ensure that the pumped paint is in a homogeneous state. The dip coating paint and the flow coating paint prepared by using the suspending agent combination have proper thixotropic property, namely the viscosity of the paint becomes thin under the action of external force, and the viscosity of the paint becomes thick in a short time after the external force is removed. Under the action of external force, the lower viscosity is beneficial to the movement of the paint, and the paint can be effectively coated on the parts of complex cavities, gaps, grooves and the like. After the external force is removed, the viscosity of the coating becomes thick, a coating structure with uniform thickness can be established, and drop marks and push accumulation are avoided. The dip coating paint and the flow coating paint prepared by using the suspending agent combination have good leveling property, namely the surface of the coating can be smooth and even under the action of the surface tension, gravity and the like of the coating under the condition that the surface of the coating is slightly piled up and flow marks are generated.
The binder adopted by the invention is a mixture of polyvinyl alcohol, modified silicate inorganic binder, temperature wheel glue and etherified starch. The temperature wheel glue and the etherified starch have good dispersibility, temperature resistance, segregation resistance and thickening property, and have excellent compatibility with organic matters and inorganic matters. The binder combination can effectively improve the solid content and the binding performance of the binder, can obtain proper strength under normal temperature and high temperature conditions only by lower addition, greatly reduces the gas generation amount of the coating, reduces the air hole defect of castings caused by overlarge gas generation amount, expands the application range of the coating, and can meet the pouring requirements of different alloy castings.
As a preferable technical scheme:
the composite suspending agent-binder composition comprises the following components in percentage by weight:
suspension-adhesive composition No. 1: 5% of sodium bentonite, 5% of lithium bentonite, 15% of modified attapulgite, 1% of sodium lignin sulfonate, 0.75% of fumed silica, 0.75% of hydroxyethyl cellulose, 30% of polyvinyl alcohol, 1.5% of modified silicate inorganic binder, 2.5% of temperature wheel glue, 1% of etherified starch and 37.5% of water;
suspension-adhesive composition No. 2: 5% of sodium bentonite, 12.5% of lithium bentonite, 7.5% of modified attapulgite, 1.25% of sodium lignosulfonate, 0.5% of fumed silica, 0.75% of hydroxyethyl cellulose, 30% of polyvinyl alcohol, 1.5% of modified silicate inorganic binder, 1% of thermal roller gum, 2.5% of etherified starch and 37.5% of water.
The water-based paint comprises the following components in percentage by weight:
50% of zircon powder, 20% of white corundum powder, 5% of bauxite powder, 8% of a suspending agent-binder composition No. 1, 0.4% of a preservative, 0.1% of a defoaming agent and 16.5% of water;
or: 60% of white corundum powder, 10% of mullite powder, 5% of bauxite powder, 6.5% of a suspending agent-binder composition No. 1, 0.3% of a preservative, 0.2% of a defoaming agent and 18% of water;
or: 50% of mullite powder, 15% of kaolin powder, 8% of talcum powder, 8.5% of suspending agent-binder composition No. 1, 0.3% of preservative, 0.3% of defoaming agent and 17.9% of water.
45% of zircon powder, 20% of white corundum powder, 7% of mullite powder, 7.5% of suspending agent-binder composition No. 2, 0.4% of preservative, 0.1% of defoaming agent and 20% of water;
or: 55% of bauxite powder, 10% of kaolin powder, 7% of talcum powder, 8% of suspending agent-binder composition No. 2, 0.3% of preservative, 0.2% of defoaming agent and 19.5% of water;
or: 30% of zircon powder, 35% of mullite powder, 5% of talcum powder, 8.5% of suspending agent-binder composition No. 2, 0.3% of preservative, 0.3% of defoaming agent and 20.9% of water.
The invention also provides a preparation method of the water-based paint for the 3D printing sand core, which is characterized by comprising the following specific steps:
a) Preparation of a suspension-binder composition:
a) Pretreatment of a suspending agent combination:
adding a part of solvent into a stirring tank, pouring a suspending agent, a suspension aid and a rheological aid into the stirring tank at a rotating speed of 350-450r/min, adjusting the speed to 900-1100r/min, and uniformly stirring for 25-35min to obtain a suspending agent pretreatment combination;
b) Pretreatment of the adhesive:
adding a part of solvent into a stirring tank, adding a binder at a rotating speed of 350-450r/min, adjusting the speed to 750-850r/min, and stirring at a constant speed for 240-300min to obtain a binder pretreatment combination;
c) And (3) taking a 50% suspending agent pretreatment combination and a 50% adhesive pretreatment combination, pouring the two into a stirring tank, stirring for 55-75min at 950-1050r/min, taking out and pouring into an ultrasonic processor, and processing for 8-12min to obtain the suspending agent-adhesive composition.
B) Preparing a water-based paint for a 3D printing sand core:
pouring 15.5-23% of solvent into a stirring tank, starting up, adding 5-10% of suspending agent-binder composition, 70-79% of composite refractory aggregate and 0.2-0.5% of preservative at the speed of 350-450r/min, stirring for 20-40min, reducing the rotating speed to 350-450r/min, adding 0.1-0.3% of defoamer, regulating the speed to 700-900r/min, and stirring for 5-10min to obtain the composite refractory aggregate.
Compared with the existing 3D sand core water-based coating technology, the water-based coating disclosed by the invention has very stable suspension capability under normal temperature conditions, excellent coating hanging property and leveling property, no dripping, no accumulation and no flow mark, and high strength after drying. The higher solid content of the coating can reduce excessive solvent entering the sand core while ensuring that the coating has proper penetration depth, so that the strength of the sand core is reduced and the high-temperature fireproof performance of the sand core is further affected. At high temperature, the coating has high strength and moderate sintering degree, has excellent crusting capacity after casting, can block the impact of molten metal, and has high shelling rate during shakeout. The energy is saved, the environment is protected, and a more convenient method is provided for converting the traditional casting production enterprises into green environment-friendly production.
Detailed Description
Examples 1 to 3
The preparation process of the 3D printing sand core water-based paint suitable for the dip-coating process comprises the following steps of,
a) Pretreatment of suspension-adhesive composition No. 1:
a) Adding 45 parts of solvent water into a stirring tank, starting up, slowly pouring 10 parts of sodium bentonite, 10 parts of lithium bentonite, 30 parts of modified attapulgite, 2 parts of sodium lignin sulfonate, 1.5 parts of fumed silica and 1.5 parts of hydroxyethyl cellulose into the stirring tank at a rotating speed of 400r/min, then adjusting the speed to 1000r/min, and uniformly stirring for 30min to obtain a suspension pretreatment combination;
b) The method comprises the steps of preprocessing an adhesive, namely adding 30 parts of water into a stirring tank, starting up, slowly adding 60 parts of polyvinyl alcohol, 3 parts of modified silicate inorganic adhesive, 5 parts of hotplate rubber and 2 parts of etherified starch at a rotating speed of 400r/min, adjusting the speed to 800r/min, and stirring at a constant speed for 240min to obtain the adhesive preprocessing combination.
c) 50 parts of a suspending agent pretreatment combination and 50 parts of an adhesive pretreatment combination are taken, the suspending agent pretreatment combination and the adhesive pretreatment combination are poured into a stirring tank, stirred at a constant speed of 1000r/min for 60min, taken out and poured into an ultrasonic processor, and processed for 10min, thus obtaining the suspending agent-adhesive composition No. 1.
B) The component materials were weighed according to the corresponding mass requirements of the examples in table 1.
C) Adding solvent into stirring tank, starting, slowly adding suspending agent-binder composition No. 1, composite refractory aggregate and antiseptic at 400r/min, stirring for 30min at 1200r/min, reducing rotation speed to 400r/min, adding defoaming agent at 800r/min, and stirring for 5min.
TABLE 1
Examples 4 to 6
The preparation process of the 3D printing sand core water-based paint suitable for the flow coating process comprises the following steps of,
a) Pretreatment of suspension-adhesive composition No. 2:
a) Firstly, pretreating a suspending agent combination, namely, adding 45 parts of solvent water into a stirring tank, starting up, slowly pouring 10 parts of sodium bentonite, 25 parts of lithium bentonite, 15 parts of modified attapulgite, 2.5 parts of sodium lignin sulfonate, 1 part of fumed silica and 1.5 parts of hydroxyethyl cellulose into the stirring tank at a rotating speed of 400r/min, then regulating the speed to 1000r/min, and uniformly stirring for 30min to obtain the suspending agent pretreatment combination;
b) Pretreatment of the adhesive: adding 30 parts of water into a stirring tank, starting up, slowly adding 60 parts of polyvinyl alcohol, 3 parts of modified silicate inorganic binder, 2 parts of hotplate rubber and 5 parts of etherified starch at a rotating speed of 400r/min, regulating the speed to 800r/min, and stirring at a constant speed for 240min to obtain the binder pretreatment combination.
c) 50 parts of a suspending agent pretreatment combination and 50 parts of an adhesive pretreatment combination are taken, the suspending agent pretreatment combination and the adhesive pretreatment combination are poured into a stirring tank, stirred at a constant speed of 1000r/min for 60min, taken out and poured into an ultrasonic processor, and processed for 10min, thus obtaining the suspending agent-adhesive composition No. 2.
B) The component materials were weighed according to the corresponding mass requirements of the examples in Table 2.
C) Adding solvent into stirring tank, starting, slowly adding suspending agent-binder composition No. 2, composite refractory aggregate and antiseptic at 400r/min, stirring for 30min at 1200r/min, reducing rotation speed to 400r/min, adding defoaming agent at 800r/min, and stirring for 5min.
TABLE 2
The coating prepared in the examples 1-6 has excellent suspension property, coating hanging property, thixotropic property and proper permeability, the coating does not drip, is not piled up and has no flow mark, the coating has excellent leveling property, the coating strength is high, the surface quality of the 3D sand core can be obviously improved, the suspension stability is excellent, the suspension rate of 48h can reach 99% or more, the shelling rate after casting is high, the primary shelling rate can reach 95% or more, the energy is saved, and the environment is protected.
Comparative example 1:
the differences from examples 1-3 are that:
a) The weight percentages of the components in the suspending agent-binder composition No. 1 are: 28% of suspending agent (10% of sodium bentonite, 18% of modified attapulgite), 2.5% of suspending aid (hydroxyethyl cellulose), 0.5% of rheological aid (sodium lignin sulfonate), 25.5% of binder (24% of polyvinyl alcohol, 1% of thermal roller adhesive and 0.5% of modified silicate inorganic binder) and 43.5% of solvent.
B) The preparation process of the suspending agent-binder composition No. 1 comprises the following steps:
pretreatment of suspending agent: after adding the suspending agent, the rheological additive and the solvent into a stirring tank, the speed is adjusted to 800r/min, and stirring is carried out for 45min.
Pretreatment of the adhesive: after the binder and solvent were added to the stirring tank, the speed was adjusted to 700r/min and stirred for 360min.
After pouring the suspension agent pretreatment combination and the adhesive pretreatment combination into the stirring tank, stirring for 100min at 850 r/min.
C) The comparative coating comprises the following components in percentage by weight: 40% of zircon powder, 25% of white corundum powder, 5% of kaolin powder, 8% of a suspending agent-binder composition No. 1, 0.3% of a preservative, 0.1% of a defoaming agent and 21.6% of a solvent. Comparative example 2:
the differences from examples 4-6 are that:
a) The weight percentages of the components in the suspending agent-binder composition No. 2 are: suspending agent (modified attapulgite 8%, lithium bentonite 13%), suspending aid (hydroxyethyl cellulose) 2.5%, rheology aid (sodium lignin sulfonate) 1%, binder (polyvinyl alcohol 25%, modified silicate inorganic binder 2%, etherified starch 3%), 30%, solvent 45.5%.
B) The preparation process of the suspending agent-binder composition No. 2 comprises the following steps:
pretreatment of suspending agent: after adding the suspending agent, the rheological additive and the solvent into a stirring tank, the speed is adjusted to 1200r/min, and stirring is carried out for 15min.
Pretreatment of the adhesive: after the binder and solvent were added to the stirring tank, the speed was adjusted to 950r/min and stirred for 200min.
After pouring the suspension agent pretreatment combination and the adhesive pretreatment combination into the stirring tank, stirring for 50min at 1200 r/min.
C) The comparative coating comprises the following components in percentage by weight: 35% of bauxite powder, 20% of white corundum powder, 15% of talcum powder, 7.5% of suspending agent-binder composition No. 2, 0.2% of preservative, 0.1% of defoaming agent and 22.2% of solvent.
The water-based paint prepared in the comparative examples 1 and 2 and the water-based paint prepared in the examples 1 to 3 and 4 to 6 are used under the same conditions, undissolved flocculants exist in the paint obtained in the comparative examples 1 and 2, coating hanging property and leveling property of the paint are poor, the paint is accumulated at the complex groove part of the 3D printing sand core, and the thickness of the coating is uneven. The 48h suspension of the coatings obtained in comparative examples 1 and 2 were 73% and 68%, respectively. After drying, the coatings of comparative examples 1 and 2 had lower coating strength and greater penetration depth, resulting in a decrease in the strength of the sand cores. After casting, the casting using the coatings obtained in comparative examples 1 and 2 had poor surface quality, the casting had a deviation in size, and had defects of sand sticking and slag inclusion, and the shelling rates of both were 45% and 40%, respectively.
The invention is not a matter of the known technology.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (4)
1. A water-based paint for 3D printing sand cores, characterized by: the water-based paint comprises the following components in percentage by weight: 70-79% of composite refractory aggregate, 5-10% of composite suspending agent-binder composition, 0.1-0.3% of defoamer, 0.2-0.5% of preservative and 15.5-23% of solvent;
the composite refractory aggregate is two or more than three of zircon powder, white corundum powder, mullite powder, bauxite powder, kaolin powder and talcum powder; the defoaming agent is a nonionic alkyne diol modified surfactant; the preservative is methyl chloroisothiazolinone derivative; the solvent is water;
the composite suspending agent-binder composition consists of a suspending agent, a binder, a suspending aid, a rheological aid and a solvent, wherein: the suspending agent is one or more of sodium bentonite, lithium bentonite and modified attapulgite, the binder is one or more of polyvinyl alcohol, modified silicate inorganic binder, temperature wheel glue and etherified starch, the suspending auxiliary agent is one or more of fumed silica and hydroxyethyl cellulose, and the rheological auxiliary agent is sodium lignin sulfonate; the solvent is water;
the weight percentage of each component in the composite suspending agent-binder composition is as follows: 23-27% of suspending agent; 32-37% of adhesive; 1-2% of a suspending aid; 0.8-1.5% of rheological additive; 35-39% of solvent;
the composite suspending agent-binder composition comprises the following components in percentage by weight:
suspension-adhesive composition No. 1: 5% of sodium bentonite, 5% of lithium bentonite, 15% of modified attapulgite, 1% of sodium lignin sulfonate, 0.75% of fumed silica, 0.75% of hydroxyethyl cellulose, 30% of polyvinyl alcohol, 1.5% of modified silicate inorganic binder, 2.5% of temperature wheel glue, 1% of etherified starch and 37.5% of water;
suspension-adhesive composition No. 2: 5% of sodium bentonite, 12.5% of lithium bentonite, 7.5% of modified attapulgite, 1.25% of sodium lignosulfonate, 0.5% of fumed silica, 0.75% of hydroxyethyl cellulose, 30% of polyvinyl alcohol, 1.5% of modified silicate inorganic binder, 1% of thermal roller gum, 2.5% of etherified starch and 37.5% of water.
2. The water-based paint for 3D printing sand cores according to claim 1, wherein the formulation composition of the water-based paint is as follows in weight percent:
50% of zircon powder, 20% of white corundum powder, 5% of bauxite powder, 8% of a suspending agent-binder composition No. 1, 0.4% of a preservative, 0.1% of a defoaming agent and 16.5% of water;
or: 60% of white corundum powder, 10% of mullite powder, 5% of bauxite powder, 6.5% of a suspending agent-binder composition No. 1, 0.3% of a preservative, 0.2% of a defoaming agent and 18% of water;
or: 50% of mullite powder, 15% of kaolin powder, 8% of talcum powder, 8.5% of suspending agent-binder composition No. 1, 0.3% of preservative, 0.3% of defoaming agent and 17.9% of water.
3. The water-based paint for 3D printing sand cores according to claim 1, wherein the formulation composition of the water-based paint is as follows in weight percent:
45% of zircon powder, 20% of white corundum powder, 7% of mullite powder, 7.5% of suspending agent-binder composition No. 2, 0.4% of preservative, 0.1% of defoaming agent and 20% of water;
or: 55% of bauxite powder, 10% of kaolin powder, 7% of talcum powder, 8% of suspending agent-binder composition No. 2, 0.3% of preservative, 0.2% of defoaming agent and 19.5% of water;
or: 30% of zircon powder, 35% of mullite powder, 5% of talcum powder, 8.5% of suspending agent-binder composition No. 2, 0.3% of preservative, 0.3% of defoaming agent and 20.9% of water.
4. A method of preparing a water-based paint for 3D printing sand cores according to claim 1, characterized by the specific steps of:
a) Preparation of a suspension-binder composition:
a) Pretreatment of a suspending agent combination:
adding a part of solvent into a stirring tank, pouring a suspending agent, a suspension aid and a rheological aid into the stirring tank at a rotating speed of 350-450r/min, adjusting the speed to 900-1100r/min, and uniformly stirring for 25-35min to obtain a suspending agent pretreatment combination;
b) Pretreatment of the adhesive:
adding a part of solvent into a stirring tank, adding a binder at a rotating speed of 350-450r/min, adjusting the speed to 750-850r/min, and stirring at a constant speed for 240-300min to obtain a binder pretreatment combination;
c) Taking 50% of a suspending agent pretreatment combination and 50% of a binder pretreatment combination, pouring the two into a stirring tank, stirring for 55-75min at 950-1050r/min, taking out and pouring into an ultrasonic processor, and processing for 8-12min to obtain a suspending agent-binder composition;
b) Preparing a water-based paint for a 3D printing sand core:
pouring 15.5-23% of solvent into a stirring tank, starting up, adding 5-10% of suspending agent-binder composition, 70-79% of composite refractory aggregate and 0.2-0.5% of preservative at the speed of 350-450r/min, stirring for 20-40min, reducing the rotating speed to 350-450r/min, adding 0.1-0.3% of defoamer, regulating the speed to 700-900r/min, and stirring for 5-10min to obtain the composite refractory aggregate.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU980921A1 (en) * | 1981-04-03 | 1982-12-15 | Ждановский металлургический институт | Pickup preventing coating for casting moulds and cores |
| CN108655332A (en) * | 2017-03-29 | 2018-10-16 | 宁夏共享模具有限公司 | A kind of water-based dip applicating paint and preparation method thereof for 3D printing sand mold |
| CN110586854A (en) * | 2019-10-21 | 2019-12-20 | 沈阳铸造研究所有限公司 | Quick-drying water-based paint for casting and preparation method thereof |
| CN111570720A (en) * | 2020-05-26 | 2020-08-25 | 襄阳聚力新材料科技有限公司 | Water-based flow coating for cast steel and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU980921A1 (en) * | 1981-04-03 | 1982-12-15 | Ждановский металлургический институт | Pickup preventing coating for casting moulds and cores |
| CN108655332A (en) * | 2017-03-29 | 2018-10-16 | 宁夏共享模具有限公司 | A kind of water-based dip applicating paint and preparation method thereof for 3D printing sand mold |
| CN110586854A (en) * | 2019-10-21 | 2019-12-20 | 沈阳铸造研究所有限公司 | Quick-drying water-based paint for casting and preparation method thereof |
| CN111570720A (en) * | 2020-05-26 | 2020-08-25 | 襄阳聚力新材料科技有限公司 | Water-based flow coating for cast steel and preparation method thereof |
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