CN107214292A - A kind of moulding sand for casting and preparation method thereof - Google Patents
A kind of moulding sand for casting and preparation method thereof Download PDFInfo
- Publication number
- CN107214292A CN107214292A CN201710510154.9A CN201710510154A CN107214292A CN 107214292 A CN107214292 A CN 107214292A CN 201710510154 A CN201710510154 A CN 201710510154A CN 107214292 A CN107214292 A CN 107214292A
- Authority
- CN
- China
- Prior art keywords
- parts
- casting
- molding sand
- starch
- coupling agent
- 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.)
- Pending
Links
- 238000005266 casting Methods 0.000 title claims abstract description 37
- 239000004576 sand Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 238000000465 moulding Methods 0.000 title abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000003110 molding sand Substances 0.000 claims abstract description 48
- 239000000843 powder Substances 0.000 claims abstract description 39
- 229920002472 Starch Polymers 0.000 claims abstract description 32
- 239000008107 starch Substances 0.000 claims abstract description 27
- 235000019698 starch Nutrition 0.000 claims abstract description 27
- 239000007822 coupling agent Substances 0.000 claims abstract description 26
- 239000000440 bentonite Substances 0.000 claims abstract description 22
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 22
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 239000003365 glass fiber Substances 0.000 claims abstract description 17
- 239000010881 fly ash Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229940068041 phytic acid Drugs 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 229920002545 silicone oil Polymers 0.000 claims abstract description 11
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 24
- 239000004848 polyfunctional curative Substances 0.000 claims description 23
- 239000004575 stone Substances 0.000 claims description 18
- 239000007849 furan resin Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 11
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 10
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 9
- 125000001931 aliphatic group Chemical group 0.000 claims description 9
- 125000003118 aryl group Chemical group 0.000 claims description 9
- 229910052726 zirconium Inorganic materials 0.000 claims description 9
- 229920001592 potato starch Polymers 0.000 claims description 7
- 244000017020 Ipomoea batatas Species 0.000 claims description 5
- 235000002678 Ipomoea batatas Nutrition 0.000 claims description 5
- 240000003183 Manihot esculenta Species 0.000 claims description 5
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 5
- 240000004922 Vigna radiata Species 0.000 claims description 5
- 235000010721 Vigna radiata var radiata Nutrition 0.000 claims description 5
- 235000011469 Vigna radiata var sublobata Nutrition 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 235000002949 phytic acid Nutrition 0.000 claims description 5
- 239000000467 phytic acid Substances 0.000 claims description 5
- -1 phytic acid ester Chemical class 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 229940100445 wheat starch Drugs 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 4
- 235000013312 flour Nutrition 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 240000008042 Zea mays Species 0.000 description 3
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 3
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 235000005822 corn Nutrition 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002383 tung oil Substances 0.000 description 1
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
- 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
- B22C1/167—Mixtures of inorganic and organic binding agents
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a kind of moulding sand for casting, belong to molding sand technical field, include the raw material of following parts by weight：80 90 parts of silica flour, 20 26 parts of bentonite, 15 17 parts of glass-cermic powder, 12 14 parts of flyash, 79 parts of steel fibre, 14 18 parts of glass fibre, 10 15 parts of furane resins, 47 parts of inositol hexaphosphate, 12 parts of silicone oil, 46 parts of starch, 12 parts of coupling agent, 24 parts of curing agent, 15 18 parts of water；The invention also discloses a kind of preparation method of moulding sand for casting；Good mechanical property of the present invention, with preferably heat-resisting ability, heat endurance is good.
Description
Technical Field
The invention relates to the technical field of molding sand, and particularly relates to molding sand for casting and a preparation method thereof.
Background
Molding sand is used as a molding material in casting. The molding sand is generally prepared by mixing molding materials such as raw sand for casting, a molding sand binder, auxiliary additives and the like according to a certain proportion. The molding sand can be classified into clay sand, water glass sand, cement sand, resin sand, etc. according to the binder used. Clay sand, sodium silicate sand and resin sand are used most.
The function of the molding sand in the casting production is very important, and casting waste products caused by poor quality of the molding sand account for about 30-50% of total casting waste products. The general requirements for molding sand are: the material has high strength and heat stability to bear various external forces and high temperature. Good fluidity, namely the capability of sand grains to move mutually under the action of external force or gravity. And thirdly, certain plasticity, namely the ability of the molding sand to deform under the action of external force and maintain the given shape after the external force is removed. And fourthly, better air permeability, namely the capability of the molding sand pores to permeate gas. High collapsibility, also called sand-out property, i.e. whether the molding sand is easy to be destroyed and removed from the casting after the casting is solidified.
But the prior molding sand has limited high temperature resistance, which causes insufficient thermal stability and poor quality; and the current casting field develops rapidly, and the requirements on the performances of steel castings and iron castings are higher, so that the performances of the molding sand are required to be further improved.
In patent document CN104057018A, a molding sand for casting is disclosed, which is made from the following raw materials by weight: 250-270 parts of silica sand powder, 40-50 parts of fly ash, 9-12 parts of aluminum hydroxide, 40-45 parts of rice bran, 20-30 parts of iron slag, 20-30 parts of calcium carbonate powder, 1-2 parts of polycarboxylic acid water reducing agent, 1-2 parts of polyacrylamide, 1-2 parts of tung oil, 45-50 parts of aluminum silicate, 30-40 parts of corn straw powder, 22-30 parts of bamboo charcoal, 30-40 parts of clay, 14-18 parts of corn flour, 3-4 parts of silane coupling agent KH-550, and a proper amount of water. The fly ash is used, so that the fineness of the molding sand is increased, the molding is easy, and the energy is saved; the straw powder, the corn flour and the like are used, so that the air permeability and the high-temperature collapsibility are improved; the stone powder is calcined and is combined with the addition of the organic adhesive, so that the plasticity, the dispersibility and the air permeability are enhanced. The invention is easy to shape and make core, solves the problems of shrinkage cavity and shrinkage porosity of the casting to reach more than 91 percent, and improves the finished product rate of the casting, but the invention has insufficient high temperature resistance and is difficult to ensure the thermal stability of the molding sand.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides molding sand for casting and a preparation method thereof, which have the advantages of good mechanical property, better high-temperature resistance and good thermal stability.
The invention provides molding sand for casting, which comprises the following raw materials in parts by weight:
80-90 parts of silica sand powder, 20-26 parts of bentonite, 15-17 parts of cast stone powder, 12-14 parts of fly ash, 7-9 parts of steel fiber, 14-18 parts of glass fiber, 10-15 parts of furan resin, 4-7 parts of inositol hexaphosphate, 1-2 parts of silicone oil, 4-6 parts of starch, 1-2 parts of coupling agent, 2-4 parts of hardening agent and 15-18 parts of water.
Preferably, the mesh number of the silica sand powder is 100-200 meshes, and the mesh number of the cast stone powder is 300-400 meshes; the bentonite is organic bentonite.
Preferably, the steel fibers have a length of 1 to 2mm and a diameter of 0.5 to 1 mm; the glass fiber has a length of 0.5-1mm and a diameter of 0.1-0.5 mm.
Preferably, the starch is one or a mixture of more than two of mung bean starch, cassava starch, sweet potato starch, potato starch and wheat starch.
Preferably, the coupling agent is a mixture of a silane coupling agent and a zirconium-based coupling agent in a weight ratio of 4: 1.
Preferably, the hardener is a mixture of an aliphatic hardener and an aromatic hardener, the weight ratio between the two being 1: 2.
The invention also provides a preparation method of the molding sand for casting, which comprises the following steps:
(1) weighing the raw materials in parts by weight;
(2) adding silica sand powder, bentonite, cast stone powder, fly ash, steel fiber and glass fiber into a stirrer, mixing for 10-15min, then adding furan resin, phytic acid ester, silicone oil, starch, a coupling agent, a hardening agent and water, and mixing for 20-30min to obtain a mixture;
(3) calcining the mixture in the step (2) for 2h, and controlling the temperature at 1300-1400 ℃;
(4) and cooling, crushing and screening to obtain the molding sand.
Wherein,
the stirring speed of the stirrer in the step (2) is 400-600 r/min.
In the step (2), the temperature is controlled to be 40-50 ℃.
The molding sand for casting and the preparation method thereof have the advantages of good mechanical property, better high-temperature resistance, good thermal stability and simple preparation process, and the specific beneficial effects are as follows:
(1) the cast stone powder can enhance the wear resistance, acid and alkali resistance of the molding sand; the steel fiber can greatly improve the physical strength of the molding sand; the glass fiber can improve the impact strength and toughness of the molding sand and also improve the heat resistance;
(2) the furan resin can improve the corrosion resistance and the heat resistance of the molding sand, and the inositol hexaphosphate, the starch and the bentonite can only bond the raw materials; the coupling agent can promote the adhesion between different substances and can improve the rheological property;
(3) the preparation method is simple, the molding sand can be stably prepared, and the silica sand powder and the cast stone powder have different meshes and can be effectively mixed into a whole.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
The molding sand for casting of the embodiment comprises the following raw materials in parts by weight:
80 parts of silica sand powder, 20 parts of bentonite, 15 parts of cast stone powder, 12 parts of fly ash, 7 parts of steel fiber, 14 parts of glass fiber, 10 parts of furan resin, 4 parts of inositol hexaphosphate, 1 part of silicone oil, 4 parts of starch, 1 part of coupling agent, 2 parts of hardening agent and 15 parts of water.
In this embodiment, the mesh number of the silica sand powder is 100 meshes, and the mesh number of the cast stone powder is 300 meshes; the bentonite is organic bentonite.
In this example, the steel fibers had a length of 1mm and a diameter of 0.5 mm; the glass fibers had a length of 0.5mm and a diameter of 0.1 mm.
In this example, the starch is a mixture of mung bean starch, tapioca starch, sweet potato starch, and wheat starch.
In this example, the coupling agent is a mixture of a silane coupling agent and a zirconium coupling agent, and the weight ratio of the silane coupling agent to the zirconium coupling agent is 4: 1.
In this example, the hardener is a mixture of an aliphatic hardener and an aromatic hardener, and the weight ratio of the aliphatic hardener to the aromatic hardener is 1: 2.
The embodiment also provides a preparation method of the molding sand for casting, which comprises the following steps:
(1) weighing the raw materials in parts by weight;
(2) adding silica sand powder, bentonite, cast stone powder, fly ash, steel fiber and glass fiber into a stirrer, mixing for 10min, then adding furan resin, phytic acid ester, silicone oil, starch, a coupling agent, a hardening agent and water, and mixing for 20min to obtain a mixture;
(3) calcining the mixture obtained in the step (2) for 2 hours, and controlling the temperature at 1300 ℃;
(4) and cooling, crushing and screening to obtain the molding sand.
Wherein,
the stirring speed of the stirrer in the step (2) is 400 r/min.
In the step (2), the temperature is controlled at 40 ℃.
Example 2
The molding sand for casting of the embodiment comprises the following raw materials in parts by weight:
85 parts of silica sand powder, 24 parts of bentonite, 16 parts of cast stone powder, 13 parts of fly ash, 8 parts of steel fiber, 16 parts of glass fiber, 13 parts of furan resin, 5 parts of inositol hexaphosphate, 1.5 parts of silicone oil, 5 parts of starch, 1.5 parts of coupling agent, 3 parts of hardening agent and 17 parts of water.
In this example, the mesh number of the silica sand powder is 200 meshes, and the mesh number of the cast stone powder is 300 meshes; the bentonite is organic bentonite.
In this example, the steel fibers had a length of 1.5mm and a diameter of 0.8 mm; the glass fibers had a length of 0.8mm and a diameter of 0.3 mm.
In this example, the starch is a mixture of mung bean starch, tapioca starch, sweet potato starch, and wheat starch.
In this example, the coupling agent is a mixture of a silane coupling agent and a zirconium coupling agent, and the weight ratio of the silane coupling agent to the zirconium coupling agent is 4: 1.
In this example, the hardener is a mixture of an aliphatic hardener and an aromatic hardener, and the weight ratio of the aliphatic hardener to the aromatic hardener is 1: 2.
The embodiment also provides a preparation method of the molding sand for casting, which comprises the following steps:
(1) weighing the raw materials in parts by weight;
(2) adding silica sand powder, bentonite, cast stone powder, fly ash, steel fiber and glass fiber into a stirrer, mixing for 13min, then adding furan resin, phytic acid ester, silicone oil, starch, a coupling agent, a hardening agent and water, and mixing for 25min to obtain a mixture;
(3) calcining the mixture obtained in the step (2) for 2 hours, and controlling the temperature to 1350 ℃;
(4) and cooling, crushing and screening to obtain the molding sand.
Wherein,
the stirring speed of the stirrer in the step (2) is 500 r/min.
In the step (2), the temperature is controlled at 45 ℃.
Example 3
The molding sand for casting of the embodiment comprises the following raw materials in parts by weight:
90 parts of silica sand powder, 26 parts of bentonite, 17 parts of cast stone powder, 14 parts of fly ash, 9 parts of steel fiber, 18 parts of glass fiber, 15 parts of furan resin, 7 parts of inositol hexaphosphate, 2 parts of silicone oil, 6 parts of starch, 2 parts of coupling agent, 4 parts of hardening agent and 18 parts of water.
In this example, the mesh number of the silica sand powder is 200 meshes, and the mesh number of the cast stone powder is 400 meshes; the bentonite is organic bentonite.
In this example, the length of the steel fiber is 2mm, and the diameter is 1 mm; the glass fibers had a length of 1mm and a diameter of 0.5 mm.
In this example, the starch is a mixture of mung bean starch, tapioca starch, sweet potato starch, and wheat starch.
In this example, the coupling agent is a mixture of a silane coupling agent and a zirconium coupling agent, and the weight ratio of the silane coupling agent to the zirconium coupling agent is 4: 1.
In this example, the hardener is a mixture of an aliphatic hardener and an aromatic hardener, and the weight ratio of the aliphatic hardener to the aromatic hardener is 1: 2.
The embodiment also provides a preparation method of the molding sand for casting, which comprises the following steps:
(1) weighing the raw materials in parts by weight;
(2) adding silica sand powder, bentonite, cast stone powder, fly ash, steel fiber and glass fiber into a stirrer, mixing for 15min, then adding furan resin, phytic acid ester, silicone oil, starch, a coupling agent, a hardening agent and water, and mixing for 30min to obtain a mixture;
(3) calcining the mixture in the step (2) for 2 hours, and controlling the temperature at 1400 ℃;
(4) and cooling, crushing and screening to obtain the molding sand.
Wherein,
the stirring speed of the stirrer in the step (2) is 600 r/min.
In the step (2), the temperature is controlled at 50 ℃.
The test results for examples 1-3 are as follows:
the high-temperature compressive strength is more than 1Mpa, the gas evolution is less than 13ml/g, the heat-resisting time is more than 6min, the room-temperature tensile strength is more than 0.1Mpa, and the hot tensile strength is more than 0.02 Mpa; the compactability was 37% and the air permeability was 117.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (9)
1. A molding sand for casting, characterized in that: the feed comprises the following raw materials in parts by weight:
80-90 parts of silica sand powder, 20-26 parts of bentonite, 15-17 parts of cast stone powder, 12-14 parts of fly ash, 7-9 parts of steel fiber, 14-18 parts of glass fiber, 10-15 parts of furan resin, 4-7 parts of inositol hexaphosphate, 1-2 parts of silicone oil, 4-6 parts of starch, 1-2 parts of coupling agent, 2-4 parts of hardening agent and 15-18 parts of water.
2. The molding sand for casting as set forth in claim 1, wherein: the mesh number of the silica sand powder is 100-200 meshes, and the mesh number of the cast stone powder is 300-400 meshes; the bentonite is organic bentonite.
3. The molding sand for casting as set forth in claim 1, wherein: the length of the steel fiber is 1-2mm, and the diameter is 0.5-1 mm; the glass fiber has a length of 0.5-1mm and a diameter of 0.1-0.5 mm.
4. The molding sand for casting as set forth in claim 1, wherein: one or more of starch mung bean starch, cassava starch, sweet potato starch, potato starch and wheat starch.
5. The molding sand for casting as set forth in claim 1, wherein: the coupling agent is a mixture of a silane coupling agent and a zirconium coupling agent, and the weight ratio of the silane coupling agent to the zirconium coupling agent is 4: 1.
6. The molding sand for casting as set forth in claim 1, wherein: the hardener is a mixture of an aliphatic hardener and an aromatic hardener, and the weight ratio of the aliphatic hardener to the aromatic hardener is 1: 2.
7. The method of producing molding sand for casting according to any one of claims 1 to 6, wherein: the method comprises the following steps:
(1) weighing the raw materials in parts by weight;
(2) adding silica sand powder, bentonite, cast stone powder, fly ash, steel fiber and glass fiber into a stirrer, mixing for 10-15min, then adding furan resin, phytic acid ester, silicone oil, starch, a coupling agent, a hardening agent and water, and mixing for 20-30min to obtain a mixture;
(3) calcining the mixture in the step (2) for 2h, and controlling the temperature at 1300-1400 ℃;
(4) and cooling, crushing and screening to obtain the molding sand.
8. The method of producing molding sand for casting according to claim 7, characterized in that: the stirring speed of the stirrer in the step (2) is 400-600 r/min.
9. The method of producing molding sand for casting according to claim 7, characterized in that: in the step (2), the temperature is controlled to be 40-50 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710510154.9A CN107214292A (en) | 2017-06-28 | 2017-06-28 | A kind of moulding sand for casting and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710510154.9A CN107214292A (en) | 2017-06-28 | 2017-06-28 | A kind of moulding sand for casting and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107214292A true CN107214292A (en) | 2017-09-29 |
Family
ID=59951007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710510154.9A Pending CN107214292A (en) | 2017-06-28 | 2017-06-28 | A kind of moulding sand for casting and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107214292A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108568492A (en) * | 2018-05-11 | 2018-09-25 | 佛山市高明利钢精密铸造有限公司 | A kind of preparation method of the special molding sand of hot investment casting |
| CN108568493A (en) * | 2018-05-11 | 2018-09-25 | 佛山市高明利钢精密铸造有限公司 | A kind of preparation method of moulding sand for casting |
| CN109175214A (en) * | 2018-10-19 | 2019-01-11 | 含山县兴达球墨铸铁厂 | A kind of casting rapid-curing cutback sand formulation |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728776A (en) * | 2012-06-08 | 2012-10-17 | 繁昌县琦祥铸造厂 | Low-cost environment-friendly molding sand and preparation method thereof |
| CN102814460A (en) * | 2012-08-20 | 2012-12-12 | 合肥江淮铸造有限责任公司 | Casting molding sand and preparation method thereof |
| CN103521683A (en) * | 2013-10-16 | 2014-01-22 | 合肥市田源精铸有限公司 | Anti-sticky calcium carbonate molding sand and preparation method thereof |
| CN104057018A (en) * | 2014-05-28 | 2014-09-24 | 安徽鑫润新型材料有限公司 | Casting molding sand and preparation method thereof |
| CN104084520A (en) * | 2014-06-25 | 2014-10-08 | 芜湖国鼎机械制造有限公司 | Casting sand, mold core and preparation method thereof |
| CN104226888A (en) * | 2014-08-29 | 2014-12-24 | 吴江市液铸液压件铸造有限公司 | Easily-scattered precoated sand and preparation method thereof |
| CN104690212A (en) * | 2015-02-04 | 2015-06-10 | 繁昌县金科机电科技有限公司 | Pre-coated sand with uniform shell layer and unshelled performance and preparation method of pre-coated sand |
| CN106734854A (en) * | 2016-12-30 | 2017-05-31 | 丁玉琴 | A kind of method that compound resin prepares high temperature resistant cracking resistance precoated sand |
-
2017
- 2017-06-28 CN CN201710510154.9A patent/CN107214292A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728776A (en) * | 2012-06-08 | 2012-10-17 | 繁昌县琦祥铸造厂 | Low-cost environment-friendly molding sand and preparation method thereof |
| CN102814460A (en) * | 2012-08-20 | 2012-12-12 | 合肥江淮铸造有限责任公司 | Casting molding sand and preparation method thereof |
| CN103521683A (en) * | 2013-10-16 | 2014-01-22 | 合肥市田源精铸有限公司 | Anti-sticky calcium carbonate molding sand and preparation method thereof |
| CN104057018A (en) * | 2014-05-28 | 2014-09-24 | 安徽鑫润新型材料有限公司 | Casting molding sand and preparation method thereof |
| CN104084520A (en) * | 2014-06-25 | 2014-10-08 | 芜湖国鼎机械制造有限公司 | Casting sand, mold core and preparation method thereof |
| CN104226888A (en) * | 2014-08-29 | 2014-12-24 | 吴江市液铸液压件铸造有限公司 | Easily-scattered precoated sand and preparation method thereof |
| CN104690212A (en) * | 2015-02-04 | 2015-06-10 | 繁昌县金科机电科技有限公司 | Pre-coated sand with uniform shell layer and unshelled performance and preparation method of pre-coated sand |
| CN106734854A (en) * | 2016-12-30 | 2017-05-31 | 丁玉琴 | A kind of method that compound resin prepares high temperature resistant cracking resistance precoated sand |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108568492A (en) * | 2018-05-11 | 2018-09-25 | 佛山市高明利钢精密铸造有限公司 | A kind of preparation method of the special molding sand of hot investment casting |
| CN108568493A (en) * | 2018-05-11 | 2018-09-25 | 佛山市高明利钢精密铸造有限公司 | A kind of preparation method of moulding sand for casting |
| CN109175214A (en) * | 2018-10-19 | 2019-01-11 | 含山县兴达球墨铸铁厂 | A kind of casting rapid-curing cutback sand formulation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104557107B (en) | Light-weight autoclaved aerated concrete and preparation process thereof | |
| CN1022094C (en) | Moulding sand for casting | |
| CN104057018A (en) | Casting molding sand and preparation method thereof | |
| CN112794666B (en) | Iron tailing non-sintered ceramsite and preparation method thereof | |
| CN107214292A (en) | A kind of moulding sand for casting and preparation method thereof | |
| CN104475654A (en) | Rapid heat dissipation foundry molding sand and preparation method thereof | |
| CN107200544A (en) | A kind of energy-conserving and environment-protective construction material and preparation method thereof | |
| CN103521690A (en) | Easily-collapsible mud core molding sand and preparation method thereof | |
| CN103387365A (en) | Thermal mortar in wall construction | |
| CN103232719B (en) | A kind of Firework cylinder material and preparation method thereof | |
| CN105060905A (en) | Low-aluminum alkali-resistant mullite brick and preparation method thereof | |
| CN103495698A (en) | High-strength moulding sand and preparation method thereof | |
| CN111592330B (en) | Stoneware brick blank, preparation method thereof and stoneware brick | |
| CN113955996A (en) | Phase-change anti-crack concrete and preparation method thereof | |
| CN100469489C (en) | Accurate casting powder | |
| JP3253579B2 (en) | Sand for mold | |
| CN107935570A (en) | A kind of founding aluminium oxide refractory material spinelle sand mold and preparation method thereof | |
| CN107737866A (en) | A kind of novel casting molding sand and preparation method thereof | |
| CN109231963B (en) | Light high-strength ceramic tile and preparation method thereof | |
| CN107824742B (en) | A kind of amorphous state moulding sand for casting and its manufacturing method | |
| CN111978024B (en) | Powder bonding 3D printing soft rock alkali-activated material and application method thereof | |
| CN104475651A (en) | Clay foundry molding sand and preparation method thereof | |
| CN104926232B (en) | Green assembled architecture wall special silico-calcium cement plate and production method thereof | |
| CN109746382B (en) | Precoated sand for three-dimensional printing and preparation method thereof | |
| CN108585625B (en) | Tea residue water permeable brick and preparation method thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170929 |