CN108296410A - A kind of 3D printing high intensity precoated sand and preparation method thereof - Google Patents
A kind of 3D printing high intensity precoated sand and preparation method thereof Download PDFInfo
- Publication number
- CN108296410A CN108296410A CN201710889701.9A CN201710889701A CN108296410A CN 108296410 A CN108296410 A CN 108296410A CN 201710889701 A CN201710889701 A CN 201710889701A CN 108296410 A CN108296410 A CN 108296410A
- Authority
- CN
- China
- Prior art keywords
- sand
- parts
- roughing
- precoated
- precoated sand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
- B22C1/22—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
- B22C5/0409—Blending, mixing, kneading or stirring; Methods therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
Abstract
The present invention relates to a kind of 3D printing high intensity precoated sands and preparation method thereof.The precoated sand is prepared by the raw material of following parts by weight：68 parts of 100 200 parts of roughing sand, 5 10 parts of coupling agent, 25 parts of dispersant, 36 parts of catalyst, 24 parts of lubricant, 30 60 parts of resin, 20 30 parts of curing agent, 10 20 parts of high temperature resistant agent, 8 12 parts of dispersant and reinforcing agent；Roughing sand is quartz sand, chromite sand, magnesia and zircon sand in mass ratio 68:4‑6:5‑7:59 be uniformly mixed obtain.In precoated sand preparation process, the mixing of resin high-speed stirred is added when roughing sand is modified, add the raw materials such as curing agent, resin and roughing sand is set to be connect by way of key connection in whipping process, substantially increase the intensity of precoated sand, to improve the quality of 3D printing molding sand, but also molding sand can well adapt to the needs of various 3D printing products, the scope of application of molding sand is expanded.
Description
Technical field
The present invention relates to precoated sand field more particularly to a kind of 3D printing high intensity precoated sands and preparation method thereof.
Background technology
Precoated sand is the molding sand or core sand that sand grain surface is covered with one layer of hard resin film before moulding, there is cold process and Re Fa
Two kinds of coating techniques.Cold process is to be dissolved resin with ethyl alcohol, and methenamine is added during mulling, and the two is made to be coated on sand
Grain surface, ethyl alcohol volatilization, obtains precoated sand；Hot method is that sand is preheating to certain temperature, adds resin that its melting, stirring is made to make resin packet
Sand grain surface is overlayed on, adds methenamine aqueous solution and lubricant, it is cooling, broken, sieve to obtain precoated sand.3D printing is by precoated sand
Gravity superposition is used to fire the process for making its curing molding by laser in layer.3D printing precoated sand is relative to traditional overlay film
For sand, there are very high requirement, common precoated sand in the mobile performance, intensity, anti-pressure ability etc. of precoated sand
Needs of the present 3D printing technique to precoated sand material performance cannot have been met.
Invention content
It is an object of the invention to provide the good 3D printings of a kind of intensity height, good fluidity, bond effect to be covered with high intensity
Film sand and preparation method thereof.
The present invention adopts the following technical scheme that：
A kind of 3D printing high intensity precoated sand, is prepared by the raw material of following parts by weight：100-200 parts of roughing sand, it is even
Join 5-10 parts of agent, 2-5 parts of dispersant, 3-6 parts of catalyst, 2-4 parts of lubricant, 30-60 parts of resin, 20-30 parts of curing agent, resistance to height
Warm agent 10-20 parts, 6-8 parts of 8-12 parts of dispersant and reinforcing agent；Wherein, roughing sand is that quartz sand, chromite sand, magnesia and zircon sand are pressed
Mass ratio 6-8:4-6:5-7:5-9 is uniformly mixed and obtains.
Further, the granularity of precoated sand is 200-300 mesh.
Further, the granularity of roughing sand is 200-300 mesh.
Further, resin is one or more of phenolic resin, Lauxite, epoxy resin, polyester polyol.
Further, precoated sand is used as the molding sand of 3D printing rapid shaping.
The present invention also provides a kind of methods preparing 3D printing high intensity precoated sand, include the following steps：
(1) prepared by roughing sand：Quartz sand, chromite sand, magnesia, zircon sand are cleaned with clear water respectively, in acid solution after cleaning
Middle immersion takes out be put into drying in drier later, and drying temperature is 100-200 DEG C, is put into calcination in high temperature furnace after dry, burns
It burns postcooling to room temperature to take out, then is separately added into the particle for being ground into that particle size is 200-300 mesh in ball mill, finally
By quartz sand, chromite sand, magnesia and zircon sand 6-8 in mass ratio:4-6:5-7:5-9 is uniformly mixed up to roughing sand；
(2) roughing sand is modified：By 100-200 parts of the roughing sand of step (1) acquisition, 5-10 parts of coupling agent, 2-5 parts of dispersant, urge
2-4 parts of addition batch mixer high speeds of 3-6 parts of agent and lubricant stir 20-30min, wait for that temperature of charge reaches 120- in batch mixer
At 180 DEG C, batch mixer is adjusted to stirring at low speed and stirs 1-2h, and 30-60 parts of resins are added later, and height is then turned on after being added completely
Speed stirring 1-5min, obtains modified roughing sand；
(3) prepared by precoated sand：When the temperature of modified roughing sand in step (2) batch mixer is down to 120-150 DEG C, by curing agent
20-30 parts, 10-20 parts of high temperature resistant agent, in 8-12 parts of dispersant and 6-8 parts of addition batch mixers of reinforcing agent, high-speed stirred 10-
20min takes out after material cooling；
(4) crushing packing：It is 200-300 mesh that the material that step (3) obtains, which is added in pulverizer, and is ground into particle size
Particle, be cooled to room temperature, take out packaging to get high intensity precoated sand.
Further, in step (1) acid solution a concentration of 1-10mol/L, soaking time 2-5h.
Further, step (1) high temperature furnace temperature is 900-1500 DEG C, calcination time 10-20h.
Further, batch mixer high-speed stirred rotating speed is 300-400rpm, and stirring at low speed rotating speed is 200-300rpm.
The 3D printing high intensity precoated sand of the present invention, has the advantages that：
(1) 3D printing high intensity precoated sand of the invention, to the mixing of resin high-speed stirred is added in roughing sand modifying process,
Add curing agent etc. later and prepare precoated sand so that between resin and roughing sand in whipping process by way of key connection into
Row connection, changes the cladding connection type between conventional roughing sand and resin, enhances the bonding point intensity of roughing sand and resin,
And then the intensity of precoated sand is substantially increased, room temperature tensile strength reaches 5-7.5MPa, and flexural strength reaches 3-4MPa, compared to
Commercially available common precoated sand, intensity have raising by a relatively large margin, to improve the quality of 3D printing molding sand, but also molding sand can
The needs for well adapting to various 3D printing products, expand the scope of application of molding sand.
(2) 3D printing of the invention has chromite sand, the magnesia of good heat conductive heat dissipation effect in high intensity precoated sand
A part with zircon sand as roughing sand, while high temperature resistant agent is added in preparation process, improve the high temperature resistance of precoated sand；
The aminated compounds for reducing methenamine decomposition simultaneously resolves into the possibility of Nitrogen Atom, improves the lustrous surface of precoated sand
Degree.
(3) in roughing sand modifying process, dispersant, lubrication is added in high intensity precoated sand in 3D printing of the invention
The raw materials such as agent improve the mobility of precoated sand, and mobility reaches 4.5-7.5cm/min, with commercially available common precoated sand 1.2cm/
The mobility of min is compared, and is significantly improved, and property is stablized, and can print small parts using the precoated sand, and produce
Product intensity is good, precision is high.
Specific implementation mode
Below in conjunction with specific experiment data, technical solution in the embodiment of the present invention carries out clear, complete description,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, all other implementation that those skilled in the art is obtained without making creative work
Example, belongs to protection scope of the present invention.
Embodiment 1
A kind of 3D printing high intensity precoated sand, is prepared by the raw material of following parts by weight：100 parts of roughing sand, diphenyl
5 parts of methane diisocyanate, 2 parts of oxidized polyethylene wax, 3 parts of sodium thiosulfate, 2 parts of Solsperse 2000,30 parts of phenolic resin, concentration
For 6 parts of 20 parts of the methenamine of 10-60%, 10 parts of asbestos fibre, 8 parts of potassium chromate and methymethacrylate resin；Wherein, former
Sand is quartz sand, chromite sand, magnesia and zircon sand in mass ratio 6:4:5:5 be uniformly mixed obtain.
The preparation method of precoated sand in the present embodiment, using following steps：
(1) prepared by roughing sand：Quartz sand, chromite sand, magnesia, zircon sand are cleaned with clear water respectively, a concentration of after cleaning
5h is impregnated in the acid solution of 1mol/L, takes out be put into drying in drier later, and drying temperature is 100 DEG C, and height is put into after dry
Calcination in warm stove, high temperature furnace temperature are 900 DEG C, calcination time 20h, and calcination postcooling to room temperature is taken out, then it is added respectively
Enter to be ground into the particle that particle size is 200-300 mesh in ball mill, finally presses quartz sand, chromite sand, magnesia and zircon sand
Mass ratio 6:4:5:5 are uniformly mixed up to roughing sand；
(2) roughing sand is modified：By 100 parts of the roughing sand of step (1) acquisition, 5 parts of methyl diphenylene diisocyanate, the poly- second of oxidation
2 parts of 2 parts of alkene wax, 3 parts of sodium thiosulfate and Solsperse 2000 addition batch mixer high speeds stir 20min, and high-speed stirred rotating speed is
400rpm, when temperature of charge in batch mixer is up to 120 DEG C, batch mixer is adjusted to stirring at low speed and stirs 2h, stirring at low speed rotating speed
For 200rpm, 30 parts of phenolic resin are added later, high-speed stirred 5min is then turned on after being added completely, obtain modified roughing sand；
(3) prepared by precoated sand：When the temperature of modified roughing sand in step (2) batch mixer is down to 120 DEG C, by a concentration of 10-
In 20 parts of 60% methenamine, 10 parts of asbestos fibre, 8 parts of potassium chromate and 6 parts of addition batch mixers of methymethacrylate resin,
High-speed stirred 20min takes out after material cooling；
(4) crushing packing：It is 200-300 mesh that the material that step (3) obtains, which is added in pulverizer, and is ground into particle size
Particle, be cooled to room temperature, take out packaging to get high intensity precoated sand.
Embodiment 2
A kind of 3D printing high intensity precoated sand, is prepared by the raw material of following parts by weight：200 parts of roughing sand, toluene two
10 parts of isocyanates, 5 parts of hydroxy stearic acid, 6 parts of potassium thiosulfate, 4 parts of stearic amide, 60 parts of Lauxite, a concentration of 10-
8 parts of 30 parts of 60% methenamine, 20 parts of glass fibre, 12 parts of manganese dioxide and vinyl acetate resin；Wherein, roughing sand is stone
Sand, chromite sand, magnesia and zircon sand in mass ratio 8:6:7:9 be uniformly mixed obtain.
The preparation method of precoated sand in the present embodiment, using following steps：
(1) prepared by roughing sand：Quartz sand, chromite sand, magnesia, zircon sand are cleaned with clear water respectively, a concentration of after cleaning
2h is impregnated in the acid solution of 10mol/L, takes out be put into drying in drier later, and drying temperature is 200 DEG C, and height is put into after dry
Calcination in warm stove, high temperature furnace temperature are 1500 DEG C, calcination time 10h, and calcination postcooling to room temperature is taken out, then it is added respectively
Enter to be ground into the particle that particle size is 200-300 mesh in ball mill, finally presses quartz sand, chromite sand, magnesia and zircon sand
Mass ratio 8:6:7:9 are uniformly mixed up to roughing sand；
(2) roughing sand is modified：200 parts of roughing sand, 10 parts of toluene di-isocyanate(TDI), the hydroxy stearic acid 5 that step (1) is obtained
4 parts of part, 6 parts of potassium thiosulfate and stearic amide addition batch mixer high speeds stir 30min, and high-speed stirred rotating speed is
300rpm, when temperature of charge in batch mixer is up to 180 DEG C, batch mixer is adjusted to stirring at low speed and stirs 1h, stirring at low speed rotating speed
For 300rpm, 60 parts of Lauxites are added later, high-speed stirred 1min is then turned on after being added completely, obtain modified roughing sand；
(3) prepared by precoated sand：When the temperature of modified roughing sand in step (2) batch mixer is down to 150 DEG C, by a concentration of 10-
In 30 parts of 60% methenamine, 20 parts of glass fibre, 12 parts of manganese dioxide and 8 parts of addition batch mixers of vinyl acetate resin,
High-speed stirred 10min takes out after material cooling；
(4) crushing packing：It is 200-300 mesh that the material that step (3) obtains, which is added in pulverizer, and is ground into particle size
Particle, be cooled to room temperature, take out packaging to get high intensity precoated sand.
Embodiment 3
A kind of 3D printing high intensity precoated sand, is prepared by the raw material of following parts by weight：150 parts of roughing sand, different Fo Er
7 parts of ketone, 4 parts of butyl stearate, 5 parts of potassium permanganate, 3 parts of stearic acid, 40 parts of epoxy resin, the Wu Luotuo of a concentration of 10-60%
7 parts of 25 parts of product, 15 parts of graphene, 10 parts of potassium bichromate and ethyl methacrylate resin；Wherein, roughing sand is quartz sand, ferrochrome
Ore in sand form, magnesia and zircon sand in mass ratio 7:5:6:7 be uniformly mixed obtain.
The preparation method of precoated sand in the present embodiment, using following steps：
(1) prepared by roughing sand：Quartz sand, chromite sand, magnesia, zircon sand are cleaned with clear water respectively, a concentration of after cleaning
4h is impregnated in the acid solution of 5mol/L, takes out be put into drying in drier later, and drying temperature is 120 DEG C, and height is put into after dry
Calcination in warm stove, high temperature furnace temperature are 1200 DEG C, calcination time 12h, and calcination postcooling to room temperature is taken out, then it is added respectively
Enter to be ground into the particle that particle size is 200-300 mesh in ball mill, finally presses quartz sand, chromite sand, magnesia and zircon sand
Mass ratio 7:5:6:7 are uniformly mixed up to roughing sand；
(2) roughing sand is modified：150 parts of roughing sand, 7 parts of isophorone, 4 parts of butyl stearate, the permanganic acid that step (1) is obtained
3 parts of addition batch mixer high speeds of 5 parts of potassium and stearic acid stir 25min, and high-speed stirred rotating speed is 360rpm, waits for material in batch mixer
When temperature is up to 160 DEG C, batch mixer is adjusted to stirring at low speed and stirs 1.5h, and stirring at low speed rotating speed is 250rpm, and 40 are added later
Part epoxy resin, high-speed stirred 4min is then turned on after being added completely, obtains modified roughing sand；
(3) prepared by precoated sand：When the temperature of modified roughing sand in step (2) batch mixer is down to 140 DEG C, by a concentration of 10-
25 parts of 60% methenamine, 15 parts of graphene, 10 parts of potassium bichromate and 7 parts of addition batch mixers of ethyl methacrylate resin
In, high-speed stirred 16min takes out after material cooling；
(4) crushing packing：It is 200-300 mesh that the material that step (3) obtains, which is added in pulverizer, and is ground into particle size
Particle, be cooled to room temperature, take out packaging to get high intensity precoated sand.
Embodiment 4
A kind of 3D printing high intensity precoated sand, is prepared by the raw material of following parts by weight：120 parts of roughing sand, six methylenes
5 parts of group diisocyanate, 3 parts of stearyl alcohol, 3 parts of sodium hypochlorite, 2 parts of butyl stearate, 35 parts of polyester polyol, a concentration of 10-
20 parts of 60% methenamine, 10 parts of glass fibre, 8 parts of potassium hyperchlorate and 8 parts of base ethyl acrylate；Wherein, roughing sand is stone
Sand, chromite sand, magnesia and zircon sand in mass ratio 7:6:7:8 be uniformly mixed obtain.
The preparation method of precoated sand in the present embodiment, using following steps：
(1) prepared by roughing sand：Quartz sand, chromite sand, magnesia, zircon sand are cleaned with clear water respectively, a concentration of after cleaning
2h is impregnated in the acid solution of 7mol/L, takes out be put into drying in drier later, and drying temperature is 180 DEG C, and height is put into after dry
Calcination in warm stove, high temperature furnace temperature are 900 DEG C, calcination time 15h, and calcination postcooling to room temperature is taken out, then it is added respectively
Enter to be ground into the particle that particle size is 200-300 mesh in ball mill, finally presses quartz sand, chromite sand, magnesia and zircon sand
Mass ratio 7:6:7:8 are uniformly mixed up to roughing sand；
(2) roughing sand is modified：By step (1) obtain 120 parts of roughing sand, 5 parts of hexamethylene diisocyanate, 3 parts of stearyl alcohol,
2 parts of addition batch mixer high speeds of 3 parts of sodium hypochlorite and butyl stearate stir 28min, and high-speed stirred rotating speed is 320rpm, waits mixing
When temperature of charge is up to 120 DEG C in material machine, batch mixer is adjusted to stirring at low speed and stirs 2h, and stirring at low speed rotating speed is 200rpm, it
35 parts of polyester polyol are added afterwards, high-speed stirred 2min is then turned on after being added completely, obtain modified roughing sand；
(3) prepared by precoated sand：When the temperature of modified roughing sand in step (2) batch mixer is down to 120 DEG C, by a concentration of 10-
20 parts of 60% methenamine, 10 parts of glass fibre are high in 8 parts of addition batch mixers of 8 parts of potassium hyperchlorate and base ethyl acrylate
Speed stirring 20min, takes out after material cooling；
(4) crushing packing：It is 200-300 mesh that the material that step (3) obtains, which is added in pulverizer, and is ground into particle size
Particle, be cooled to room temperature, take out packaging to get high intensity precoated sand.
Comparative example 1
A kind of 3D printing high intensity precoated sand, is prepared by the raw material of following parts by weight：100 parts of quartz sand, phenolic aldehyde
6 parts of 30 parts of resin, 20 parts of the methenamine of a concentration of 10-60%, 8 parts of potassium chromate and methymethacrylate resin.
The preparation method of precoated sand in this comparative example, using following steps：
(1) prepared by roughing sand：Quartz sand is cleaned with clear water, impregnates 5h in the acid solution of a concentration of 1mol/L after cleaning,
It takes out later and is put into drying in drier, drying temperature is 100 DEG C, is put into calcination in high temperature furnace after dry, high temperature furnace temperature is
900 DEG C, calcination time 20h, calcination postcooling to room temperature is taken out, then is added into ball mill and is ground into particle size and is
The particle of 200-300 mesh；
(2) prepared by precoated sand：It is stirred when roughing sand is added in batch mixer, speed of agitator 200rpm maintains the temperature at 120
DEG C, by 20 parts of the methenamine of a concentration of 10-60%, 8 parts of potassium chromate and 6 parts of addition batch mixers of methymethacrylate resin
In, high-speed stirred 20min, high-speed stirred rotating speed is 320rpm, is taken out after material cooling；
(3) crushing packing：It is 200-300 mesh that the material that step (2) obtains, which is added in pulverizer, and is ground into particle size
Particle, be cooled to room temperature, take out packaging to get precoated sand.
Comparative example 2
A kind of 3D printing high intensity precoated sand, is prepared by the raw material of following parts by weight：100 parts of quartz sand, phenolic aldehyde
6 parts of 30 parts of resin, 20 parts of the methenamine of a concentration of 10-60%, 8 parts of manganese dioxide and vinyl acetate resin.
The preparation method of precoated sand in this comparative example, using following steps：
(1) prepared by roughing sand：Quartz sand is cleaned with clear water, impregnates 5h in the acid solution of a concentration of 1mol/L after cleaning,
It takes out later and is put into drying in drier, drying temperature is 100 DEG C, is put into calcination in high temperature furnace after dry, high temperature furnace temperature is
900 DEG C, calcination time 20h, calcination postcooling to room temperature is taken out, then is added into ball mill and is ground into particle size and is
The particle of 200-300 mesh；
(2) prepared by precoated sand：It is stirred when roughing sand is added in batch mixer, speed of agitator 250rpm maintains the temperature at 120
DEG C, by 20 parts of the methenamine of a concentration of 10-60%, in 8 parts of manganese dioxide and 6 parts of addition batch mixers of vinyl acetate resin,
High-speed stirred 20min, high-speed stirred rotating speed are 360rpm, are taken out after material cooling；
(3) crushing packing：It is 200-300 mesh that the material that step (2) obtains, which is added in pulverizer, and is ground into particle size
Particle, be cooled to room temperature, take out packaging to get precoated sand.
Precoated sand obtained in embodiment 1-4 and comparative example 1-2 is tested for the property, wherein by each embodiment and comparison
Precoated sand in example is prepared into casting film part and carries out strength test, and test result is as shown in table 1.
1 precoated sand test result of table
As shown in Table 1, the casting film part that in 1-4 of the embodiment of the present invention prepared by 3D printing obtained high intensity precoated sand it is normal
Warm tensile strength is 5-7.5MPa, and the mobility of flexural strength 3-4MPa, precoated sand are 4.5-7.5cm/min；And it is right
The room temperature tensile strength for the casting film part that in ratio 1-2 prepared by precoated sand obtained is 3.5-3.8MPa, flexural strength 2-
The mobility of 2.4MPa, precoated sand are 1-1.2cm/min.It is of the invention compared with casting film part made of precoated sand in comparative example
The room temperature tensile strength and flexural strength and mobility of 3D printing high intensity precoated sand have greatly improved, explanation
By the way that the raw materials such as binder, lubricant are added in roughing sand modifying process so that between resin and roughing sand by way of key connection
Connection, cohesive force are stronger so that precoated sand produced by the present invention has better intensity, and good fluidity.By the precoated sand
When as 3D printing molding sand, the quality of 3D printing molding sand is improved, the product strength printed is good, precision is high, but also type
Sand can well adapt to the needs of various 3D printing products, expand the scope of application of molding sand.
The present invention is further described by specific embodiment above, it should be understood that, here specifically
Description, should not be construed as the restriction to the spirit and scope of the invention, and one of ordinary skilled in the art is reading this explanation
The various modifications made to above-described embodiment after book belong to the range that the present invention is protected.
Claims (9)
1. a kind of 3D printing high intensity precoated sand, which is characterized in that be prepared by the raw material of following parts by weight：Roughing sand 100-
200 parts, 5-10 parts of coupling agent, 2-5 parts of dispersant, 3-6 parts of catalyst, 2-4 parts of lubricant, 30-60 parts of resin, curing agent 20-
30 parts, 10-20 parts of high temperature resistant agent, easy dispersant 8-12 parts and 6-8 parts of reinforcing agent；Wherein, roughing sand be quartz sand, chromite sand,
Magnesia and zircon sand 6-8 in mass ratio:4-6:5-7:5-9 is uniformly mixed and obtains.
2. 3D printing according to claim 1 high intensity precoated sand, which is characterized in that the granularity of the precoated sand is
200-300 mesh.
3. 3D printing according to claim 1 high intensity precoated sand, which is characterized in that the granularity of the roughing sand is 200-
300 mesh.
4. 3D printing according to claim 1 high intensity precoated sand, which is characterized in that the resin be phenolic resin,
One or more of Lauxite, epoxy resin, polyester polyol.
5. 3D printing according to claim 1 high intensity precoated sand, which is characterized in that the precoated sand is used as 3D printing
The molding sand of rapid shaping.
6. a kind of method preparing the precoated sand described in any one of claim 1-5, which is characterized in that include the following steps：
(1) prepared by roughing sand：Quartz sand, chromite sand, magnesia, zircon sand are cleaned with clear water respectively, soaked in acid solution after cleaning
Bubble takes out be put into drying in drier later, and drying temperature is 100-200 DEG C, calcination in high temperature furnace is put into after dry, after calcination
It is cooled to room temperature taking-up, then is separately added into the particle for being ground into that particle size is 200-300 mesh in ball mill, finally by stone
Sand, chromite sand, magnesia and zircon sand 6-8 in mass ratio:4-6:5-7:5-9 is uniformly mixed up to roughing sand；
(2) roughing sand is modified：100-200 parts of roughing sand, 5-10 parts of coupling agent, 2-5 parts of dispersant, the catalyst that step (1) is obtained
3-6 parts and 2-4 parts of addition batch mixer high speeds stirring 20-30min of lubricant, wait for that temperature of charge reaches 120-180 DEG C in batch mixer
When, batch mixer is adjusted to stirring at low speed and stirs 1-2h, and 30-60 parts of resins are added later, and high-speed stirring is then turned on after being added completely
1-5min is mixed, modified roughing sand is obtained；
(3) prepared by precoated sand：When the temperature of modified roughing sand in step (2) batch mixer is down to 120-150 DEG C, by curing agent 20-
30 parts, 10-20 parts of high temperature resistant agent, in easy dispersant 8-12 parts and 6-8 parts of addition batch mixers of reinforcing agent, high-speed stirred 10-
20min takes out after material cooling；
(4) crushing packing：It is 200-300 purposes that the material that step (3) obtains, which is added in pulverizer, and is ground into particle size
Grain, is cooled to room temperature, and takes out packaging to get high intensity precoated sand.
7. the method according to claim 6 for preparing precoated sand, which is characterized in that acid solution is a concentration of in step (1)
1-10mol/L, soaking time 2-5h.
8. the method according to claim 6 for preparing precoated sand, which is characterized in that step (1) high temperature furnace temperature is
900-1500 DEG C, calcination time 10-20h.
9. the method according to claim 6 for preparing precoated sand, which is characterized in that batch mixer high-speed stirred rotating speed is 300-
400rpm, stirring at low speed rotating speed are 200-300rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710889701.9A CN108296410B (en) | 2017-09-27 | 2017-09-27 | 3D prints and uses high strength tectorial membrane sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710889701.9A CN108296410B (en) | 2017-09-27 | 2017-09-27 | 3D prints and uses high strength tectorial membrane sand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108296410A true CN108296410A (en) | 2018-07-20 |
| CN108296410B CN108296410B (en) | 2020-04-10 |
Family
ID=62869370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710889701.9A Active CN108296410B (en) | 2017-09-27 | 2017-09-27 | 3D prints and uses high strength tectorial membrane sand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108296410B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732037A (en) * | 2019-03-04 | 2019-05-10 | 苏州轻金三维科技有限公司 | A kind of 3 D-printing molding sand and preparation method thereof |
| CN109746382A (en) * | 2019-03-04 | 2019-05-14 | 苏州轻金三维科技有限公司 | A kind of 3 D-printing precoated sand and preparation method thereof |
| CN110340277A (en) * | 2019-07-09 | 2019-10-18 | 江阴天润造型材料科技有限公司 | A kind of precoated sand and the preparation method and application thereof for potassium steel with Sand sticking-resistant characteristic |
| CN110653332A (en) * | 2019-09-30 | 2020-01-07 | 宁夏共享化工有限公司 | Furan resin for casting and preparation method thereof |
| CN110903598A (en) * | 2018-09-17 | 2020-03-24 | 张艳萍 | High-strength 3D printing chemical ink material for buildings and preparation method thereof |
| CN112453314A (en) * | 2020-11-30 | 2021-03-09 | 湖北工业大学 | Curing agent for inorganic phosphate binder precoated sand and application thereof |
| CN113263133A (en) * | 2021-05-07 | 2021-08-17 | 柳州柳晶环保科技有限公司 | Easily-collapsible precoated sand and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014716A (en) * | 2014-06-18 | 2014-09-03 | 承德北雁铸造材料有限公司 | Special precoated sand of engine cylinder block water jacket and preparation method of special precoated sand |
| CN104308072A (en) * | 2014-09-16 | 2015-01-28 | 南昌航空大学 | Carbon fiber-based precoated sand material for selective laser sintering and preparation method thereof |
| CN104923712A (en) * | 2015-05-20 | 2015-09-23 | 十堰长江造型材料有限公司 | 3D printing precoated sand and preparation method thereof |
| CN105945206A (en) * | 2016-05-23 | 2016-09-21 | 无锡市嘉邦电力管道厂 | High-temperature resistant precoated sand |
| CN106493283A (en) * | 2016-10-28 | 2017-03-15 | 东南大学 | A kind of surface treatment method for improving nice foundry sand precoated sand intensity |
-
2017
- 2017-09-27 CN CN201710889701.9A patent/CN108296410B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014716A (en) * | 2014-06-18 | 2014-09-03 | 承德北雁铸造材料有限公司 | Special precoated sand of engine cylinder block water jacket and preparation method of special precoated sand |
| CN104308072A (en) * | 2014-09-16 | 2015-01-28 | 南昌航空大学 | Carbon fiber-based precoated sand material for selective laser sintering and preparation method thereof |
| CN104923712A (en) * | 2015-05-20 | 2015-09-23 | 十堰长江造型材料有限公司 | 3D printing precoated sand and preparation method thereof |
| CN105945206A (en) * | 2016-05-23 | 2016-09-21 | 无锡市嘉邦电力管道厂 | High-temperature resistant precoated sand |
| CN106493283A (en) * | 2016-10-28 | 2017-03-15 | 东南大学 | A kind of surface treatment method for improving nice foundry sand precoated sand intensity |
Non-Patent Citations (1)
| Title |
|---|
| 全国铸造学会等: "《覆膜砂及制型（芯）技术》", 31 January 2008 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110903598A (en) * | 2018-09-17 | 2020-03-24 | 张艳萍 | High-strength 3D printing chemical ink material for buildings and preparation method thereof |
| CN109732037A (en) * | 2019-03-04 | 2019-05-10 | 苏州轻金三维科技有限公司 | A kind of 3 D-printing molding sand and preparation method thereof |
| CN109746382A (en) * | 2019-03-04 | 2019-05-14 | 苏州轻金三维科技有限公司 | A kind of 3 D-printing precoated sand and preparation method thereof |
| CN109746382B (en) * | 2019-03-04 | 2021-04-02 | 苏州轻金三维科技有限公司 | Precoated sand for three-dimensional printing and preparation method thereof |
| CN110340277A (en) * | 2019-07-09 | 2019-10-18 | 江阴天润造型材料科技有限公司 | A kind of precoated sand and the preparation method and application thereof for potassium steel with Sand sticking-resistant characteristic |
| CN110653332A (en) * | 2019-09-30 | 2020-01-07 | 宁夏共享化工有限公司 | Furan resin for casting and preparation method thereof |
| CN110653332B (en) * | 2019-09-30 | 2021-05-11 | 宁夏共享化工有限公司 | Preparation method of furan resin for casting |
| CN112453314A (en) * | 2020-11-30 | 2021-03-09 | 湖北工业大学 | Curing agent for inorganic phosphate binder precoated sand and application thereof |
| CN112453314B (en) * | 2020-11-30 | 2022-04-22 | 湖北工业大学 | Curing agent for inorganic phosphate binder precoated sand and application thereof |
| CN113263133A (en) * | 2021-05-07 | 2021-08-17 | 柳州柳晶环保科技有限公司 | Easily-collapsible precoated sand and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108296410B (en) | 2020-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108296410A (en) | A kind of 3D printing high intensity precoated sand and preparation method thereof | |
| CN107098714B (en) | Silicon carbide-based ceramic part manufacturing method based on 3DP additive manufacturing technology | |
| CN105798308A (en) | Water-soluble salt core type metal powder injection molding technology | |
| CN103030921B (en) | Clutch facing without rubber winding and preparation method thereof | |
| CN106552902A (en) | Efficient anti-vein type precoated sand and preparation method thereof | |
| CN107973528A (en) | A kind of formula of 3D printing coloured glass product and preparation method thereof | |
| CN107151146A (en) | It is a kind of for PCB enhanced alumina-based ceramic of high heat conduction type Zirconium oxide fibre CNT and preparation method thereof | |
| CN107540352A (en) | The preparation and application of 3D printing aluminum oxide toughening ceramic slurry | |
| CN108017378A (en) | A kind of water-based alumina base 3D printing base substrate method and its forming method | |
| CN105216526B (en) | A kind of preparation method of drift-sand anaglyph | |
| WO2021189502A1 (en) | Pu board and preparation method therefor | |
| CN113754365B (en) | 3D printing material based on coal-to-liquid waste residues, preparation method and use method | |
| CN105251938B (en) | Production technology for precoated sand | |
| CN106670390A (en) | Forming method for soluble sand core of winding shell with end socket | |
| CN103497642A (en) | Acrylic acid mixed powder coating | |
| CN108342060A (en) | A kind of high-performance protective case of mobile phone and preparation method thereof | |
| CN104558983B (en) | The preparation method of organobentonite Modified PolytetrafluoroethylOil Oil Seal material | |
| CN104558984B (en) | Organobentonite Modified PolytetrafluoroethylOil Oil Seal material | |
| CN108296416A (en) | A kind of preparation method of 3D printing precoated sand and precoated sand obtained | |
| CN108017394A (en) | A kind of water-based nitridation silicon substrate 3D printing base substrate method and its forming method | |
| CN108500215A (en) | A kind of quick forming method of the water-soluble core of microwave curing | |
| CN108296415A (en) | A kind of ultralow 3D printing precoated sand of getting angry | |
| CN109732037B (en) | Molding sand for three-dimensional printing and preparation method thereof | |
| CN102153972A (en) | Normal temperature quick-drying adhesive for assembling and installing complex kenel and preparation method | |
| CN108296419A (en) | A kind of method using recycling glass preparation 3D printing precoated sand and precoated sand obtained |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213000 No. 12, Zhuyun Road, Zhuhu Town, Liyang City, Changzhou City, Jiangsu Province Patentee after: Liujing Technology Group Co.,Ltd. Address before: 213000 No. 12, Zhuyun Road, Zhuhu Town, Liyang City, Changzhou City, Jiangsu Province Patentee before: Liujing Technology Group (Changzhou) Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: 213000 No. 12, Zhuyun Road, Zhuhu Town, Liyang City, Changzhou City, Jiangsu Province Patentee after: Liujing Technology Group (Changzhou) Co.,Ltd. Address before: 545006 No. 10, Liye Road, Xinxing Industrial Park, Liujiang County, Liuzhou City, Guangxi Zhuang Autonomous Region Patentee before: LIUZHOU LIUJING TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221219 Address after: 545006 No. 12, Xingfu Road, Xinxing Industrial Park, Liujiang District, Liuzhou City, Guangxi Zhuang Autonomous Region Patentee after: Liuzhou Liujing Environmental Protection Technology Co.,Ltd. Address before: 213000 No. 12, Zhuyun Road, Zhuhu Town, Liyang City, Changzhou City, Jiangsu Province Patentee before: Liujing Technology Group Co.,Ltd. |
|
| TR01 | Transfer of patent right |