CN112916792A - Preparation process of precoated sand for casting core - Google Patents
Preparation process of precoated sand for casting core Download PDFInfo
- Publication number
- CN112916792A CN112916792A CN201911235459.9A CN201911235459A CN112916792A CN 112916792 A CN112916792 A CN 112916792A CN 201911235459 A CN201911235459 A CN 201911235459A CN 112916792 A CN112916792 A CN 112916792A
- Authority
- CN
- China
- Prior art keywords
- parts
- sand
- precoated sand
- water
- jewel
- 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
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
Abstract
The invention relates to a preparation process of precoated sand for core making by casting, which is prepared from the following raw materials in parts by weight: 60-75 parts of stone raw sand, 20-35 parts of jewel sand, 5-20 parts of anti-sintering agent, 5-20 parts of pottery clay, 3-5 parts of aluminum nitride powder, 0.2-0.4 part of calcium carbonate, 1.5-2.5 parts of refractory clay, 2-3 parts of water glass, 3-5 parts of phenolic resin, 1-2 parts of water, 0.55-0.58 part of urotropine, 0.7-0.75 part of dimethicone and 5-7 parts of synergist. On the basis of the traditional precoated sand, the invention changes the proportion, increases auxiliary materials, increases the content of the precious pearl sand, has good molding effect and high reuse rate, and produces castings with few pores and high compactness.
Description
Technical Field
The invention relates to the technical field of core making of castings, in particular to a preparation process of precoated sand for core making of castings.
Background
The casting is a metal forming object obtained by various casting methods, the common casting methods at present comprise shell mold casting, sand mold casting and the like, the shell mold casting is a casting method, an inner sand core is poured by molten iron, the inner sand core is scattered to form the molten iron, and then the casting is produced, but the common precoated sand has poor forming effect, poor repeated use effect after the common precoated sand is used once, low efficiency, large sand consumption and easy generation of air holes in the produced casting.
Disclosure of Invention
The invention aims to provide a preparation process of precoated sand for casting core making, which has the advantages of good forming effect, high reuse rate and less pores of produced castings.
A preparation process of precoated sand for casting cores comprises the following raw materials in parts by weight: 60-75 parts of stone raw sand, 20-35 parts of jewel sand, 5-20 parts of anti-sintering agent, 5-20 parts of pottery clay, 3-5 parts of aluminum nitride powder, 0.2-0.4 part of calcium carbonate, 1.5-2.5 parts of refractory clay, 2-3 parts of water glass, 3-5 parts of phenolic resin, 1-2 parts of water, 0.55-0.58 part of urotropine, 0.7-0.75 part of dimethicone and 5-7 parts of synergist.
Preferably, the weight ratio of the stone raw sand to the jewel sand is 3: 1.
Preferably, the raw materials are mixed and then added with auxiliary materials, wherein the auxiliary materials comprise silicon dioxide and chromium diboride, and the mixture reacts for 2 to 4 hours in a mixing heating furnace at the temperature of between 80 and 95 ℃.
Preferably, the precoated sand is prepared from the following raw materials in parts by weight: 60 parts of stone raw sand, 20 parts of jewel sand, 5 parts of anti-sintering agent, 5-10 parts of pottery clay, 3 parts of aluminum nitride powder, 0.2-0.4 part of calcium carbonate, 1.5-2.5 parts of refractory clay, 2-3 parts of water glass, 3 parts of phenolic resin, 2 parts of water, 0.55-0.58 part of urotropine, 0.7-0.75 part of dimethicone and 5-7 parts of synergist.
Preferably, the feed additive is prepared from the following raw materials in parts by weight: 65 parts of stone raw sand, 20 parts of jewel sand, 8-15 parts of anti-sintering agent, 5-8 parts of argil, 3 parts of aluminum nitride powder, 0.2-0.3 part of calcium carbonate, 1.5-2 parts of refractory clay, 2 parts of water glass, 3 parts of phenolic resin, 1-2 parts of water, 0.55-0.58 part of urotropine, 0.7-0.75 part of dimethicone and 5 parts of synergist.
The invention has the beneficial effects that: on the basis of the traditional precoated sand, the proportion is changed, auxiliary materials are added, the content of the precious pearl sand is increased, the forming effect is good, the reuse rate is high, the produced casting has few air holes and high compactness.
Detailed Description
The following detailed description is provided to enable those skilled in the art to better understand the advantages and features of the present invention, and to make better clear the definition of the scope of the invention.
A preparation process of precoated sand for casting cores comprises the following raw materials in parts by weight: 60-75 parts of stone raw sand, 20-35 parts of jewel sand, 5-20 parts of anti-sintering agent, 5-20 parts of pottery clay, 3-5 parts of aluminum nitride powder, 0.2-0.4 part of calcium carbonate, 1.5-2.5 parts of refractory clay, 2-3 parts of water glass, 3-5 parts of phenolic resin, 1-2 parts of water, 0.55-0.58 part of urotropine, 0.7-0.75 part of dimethicone and 5-7 parts of synergist.
One embodiment, the weight ratio of the stone raw sand to the baozhu sand is 3:1, 60 parts of the stone raw sand, 20 parts of the baozhu sand, 5-20 parts of an anti-sintering agent, 5-20 parts of argil, 3-5 parts of aluminum nitride powder, 0.2-0.4 part of calcium carbonate, 1.5-2.5 parts of refractory clay, 2-3 parts of water glass, 3-5 parts of phenolic resin, 1-2 parts of water, 0.55-0.58 part of urotropine, 0.7-0.75 part of dimethicone and 5-7 parts of a synergist.
In the second embodiment, the raw materials are mixed and added with auxiliary materials, wherein the auxiliary materials comprise silicon dioxide and chromium diboride, and the mixture reacts for 2 to 4 hours at the temperature of between 80 and 95 ℃ in a mixing heating furnace.
In a third embodiment, the precoated sand is prepared from the following raw materials in parts by weight: 60 parts of stone raw sand, 20 parts of jewel sand, 5 parts of anti-sintering agent, 5-10 parts of pottery clay, 3 parts of aluminum nitride powder, 0.2-0.4 part of calcium carbonate, 1.5-2.5 parts of refractory clay, 2-3 parts of water glass, 3 parts of phenolic resin, 2 parts of water, 0.55-0.58 part of urotropine, 0.7-0.75 part of dimethicone and 5-7 parts of synergist.
The fourth embodiment is prepared from the following raw materials in parts by weight: 65 parts of stone raw sand, 20 parts of jewel sand, 8-15 parts of anti-sintering agent, 5-8 parts of argil, 3 parts of aluminum nitride powder, 0.2-0.3 part of calcium carbonate, 1.5-2 parts of refractory clay, 2 parts of water glass, 3 parts of phenolic resin, 1-2 parts of water, 0.55-0.58 part of urotropine, 0.7-0.75 part of dimethicone and 5 parts of synergist.
The invention has the beneficial effects that: on the basis of the traditional precoated sand, the proportion is changed, auxiliary materials are added, the content of the precious pearl sand is increased, the forming effect is good, the reuse rate is high, the produced casting has few air holes and high compactness.
In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.
Finally, it should be noted that: the above-mentioned embodiments are merely specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.
Claims (5)
1. The preparation process of the precoated sand for casting cores is characterized by comprising the following steps of: the feed is prepared from the following raw materials in parts by weight: 60-75 parts of stone raw sand, 20-35 parts of jewel sand, 5-20 parts of anti-sintering agent, 5-20 parts of pottery clay, 3-5 parts of aluminum nitride powder, 0.2-0.4 part of calcium carbonate, 1.5-2.5 parts of refractory clay, 2-3 parts of water glass, 3-5 parts of phenolic resin, 1-2 parts of water, 0.55-0.58 part of urotropine, 0.7-0.75 part of dimethicone and 5-7 parts of synergist.
2. The process for preparing precoated sand for casting cores according to claim 1, wherein: the weight ratio of the stone raw sand to the jewel sand is 3: 1.
3. The process for preparing precoated sand for casting cores according to claim 1, wherein: the raw materials are mixed and added with auxiliary materials, wherein the auxiliary materials comprise silicon dioxide and chromium diboride, and the mixture reacts for 2 to 4 hours at the temperature of between 80 and 95 ℃ in a mixing heating furnace.
4. The process for preparing precoated sand for casting cores according to claim 1, wherein: the precoated sand is prepared from the following raw materials in parts by weight: 60 parts of stone raw sand, 20 parts of jewel sand, 5 parts of anti-sintering agent, 5-10 parts of pottery clay, 3 parts of aluminum nitride powder, 0.2-0.4 part of calcium carbonate, 1.5-2.5 parts of refractory clay, 2-3 parts of water glass, 3 parts of phenolic resin, 2 parts of water, 0.55-0.58 part of urotropine, 0.7-0.75 part of dimethicone and 5-7 parts of synergist.
5. The process for preparing precoated sand for casting cores according to claim 1, wherein: the feed is prepared from the following raw materials in parts by weight: 65 parts of stone raw sand, 20 parts of jewel sand, 8-15 parts of anti-sintering agent, 5-8 parts of argil, 3 parts of aluminum nitride powder, 0.2-0.3 part of calcium carbonate, 1.5-2 parts of refractory clay, 2 parts of water glass, 3 parts of phenolic resin, 1-2 parts of water, 0.55-0.58 part of urotropine, 0.7-0.75 part of dimethicone and 5 parts of synergist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911235459.9A CN112916792A (en) | 2019-12-05 | 2019-12-05 | Preparation process of precoated sand for casting core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911235459.9A CN112916792A (en) | 2019-12-05 | 2019-12-05 | Preparation process of precoated sand for casting core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112916792A true CN112916792A (en) | 2021-06-08 |
Family
ID=76160964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911235459.9A Pending CN112916792A (en) | 2019-12-05 | 2019-12-05 | Preparation process of precoated sand for casting core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112916792A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113770297A (en) * | 2021-09-09 | 2021-12-10 | 合肥仁创铸造材料有限公司 | Self-heat-absorption precoated sand and preparation method thereof |
-
2019
- 2019-12-05 CN CN201911235459.9A patent/CN112916792A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113770297A (en) * | 2021-09-09 | 2021-12-10 | 合肥仁创铸造材料有限公司 | Self-heat-absorption precoated sand and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103212672B (en) | Method for casting low speed diesel engine cylinder cap for large cylinder diameter boat | |
| CN106040965B (en) | A kind of moulding sand for casting | |
| AU2020202A (en) | Investment casting mold and method of manufacture | |
| JPH07232967A (en) | Production of refractory formed article and binder for the article | |
| CN105834351B (en) | A kind of resistant to elevated temperatures mold material | |
| CN106866124A (en) | A kind of Water-soluble ceramic core and preparation method thereof | |
| CN106927798A (en) | A kind of Water-soluble ceramic core and preparation method thereof | |
| CN112916792A (en) | Preparation process of precoated sand for casting core | |
| CN107812893A (en) | One kind casting cast salt core and preparation method thereof | |
| CN104985111A (en) | Corundum slag-gangue lost foam casting coating and preparation method thereof | |
| CN103302249B (en) | The mould manufacturing method of cast steel gear blank | |
| CN110814273B (en) | Modified molding sand with furan resin loaded with nano ceramic | |
| CN111718175B (en) | CO (carbon monoxide)2Hardened inorganic binder and method for producing same | |
| CN114769501B (en) | Commercial vehicle cylinder body water jacket cooling core and preparation method | |
| CN109320130A (en) | A kind of fused cast refractories sand mold modified water glass bonding agent and preparation method thereof | |
| CN106904990A (en) | A kind of high porosity Water-soluble ceramic core and preparation method thereof | |
| CN108017389B (en) | Ceramic material for die | |
| CN106966755B (en) | High-porosity water-soluble ceramic core and preparation method thereof | |
| KR101905802B1 (en) | Method for preparing casting mold with high strength using ternary inorganic binder | |
| RU2371277C1 (en) | Method for making of moulding material for sand-cement moulds | |
| CN108705026B (en) | Preparation method of special molding sand for casting stainless steel parts with complex shapes | |
| CN117447192B (en) | Slag blocking plug and preparation method thereof | |
| CN102699286A (en) | Casting method of iron casting | |
| Yevtushenko et al. | Control of the Strength Properties of Mixtures Based on Chromite Sand | |
| CN107282858A (en) | A kind of pump housing sand casting casting model powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210608 |
|
| WD01 | Invention patent application deemed withdrawn after publication |