CN114210912A - Casting foaming coating and preparation method thereof - Google Patents
Casting foaming coating and preparation method thereof Download PDFInfo
- Publication number
- CN114210912A CN114210912A CN202111423460.1A CN202111423460A CN114210912A CN 114210912 A CN114210912 A CN 114210912A CN 202111423460 A CN202111423460 A CN 202111423460A CN 114210912 A CN114210912 A CN 114210912A
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- CN
- China
- Prior art keywords
- coating
- casting
- foaming
- agent
- foaming coating
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- 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.)
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- 238000000576 coating method Methods 0.000 title claims abstract description 70
- 239000011248 coating agent Substances 0.000 title claims abstract description 69
- 238000005266 casting Methods 0.000 title claims abstract description 68
- 238000005187 foaming Methods 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000004088 foaming agent Substances 0.000 claims abstract description 23
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000006260 foam Substances 0.000 claims abstract description 14
- 239000007822 coupling agent Substances 0.000 claims abstract description 13
- 239000000375 suspending agent Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000000853 adhesive Substances 0.000 claims abstract description 10
- 230000001070 adhesive effect Effects 0.000 claims abstract description 10
- 239000011819 refractory material Substances 0.000 claims abstract description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 239000010439 graphite Substances 0.000 claims description 9
- 229910002804 graphite Inorganic materials 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 230000001680 brushing effect Effects 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- 239000000440 bentonite Substances 0.000 claims description 2
- 229910000278 bentonite Inorganic materials 0.000 claims description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims 2
- 239000002245 particle Substances 0.000 abstract description 9
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 238000002309 gasification Methods 0.000 abstract description 3
- 239000004576 sand Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- -1 cast iron Chemical class 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/005—Casting metal foams
Abstract
The invention provides a casting foaming coating and a preparation method thereof, wherein the casting foaming coating is prepared from the following raw materials in percentage by weight: 0.1-0.5% of foaming agent, 55-65% of refractory material, 3-5% of iron oxide red, 6-14% of adhesive, 6-10% of suspending agent, 4-8% of coupling agent and a proper amount of alcohol. The casting foaming coating disclosed by the invention takes a foaming agent with a certain mesh number as a pit or pock main forming material, and generates pits or pocks by gasification during combustion, because the density difference between foam and refractory aggregate is large, the foam particle drifting phenomenon is easy to generate during coating, and the foam particle adhesive force is increased by increasing the foam film covering mode and increasing the coupling mode, so that the surface of a casting reaches the design requirement, and the casting is convenient for mass production and preparation of the casting in special application occasions.
Description
Technical Field
The invention belongs to the technical field of casting coatings, and particularly relates to a casting foaming coating and a manufacturing method thereof.
Background
The casting coating is generally mainly used for improvement, overcomes the defects of sand adhesion, sand inclusion, air holes and the like of the casting sand in the solidification process of the casting, and has the function of isolating the direct contact of the metal liquid and the casting sand through the coating layer, thereby achieving a compact and smooth casting.
In recent years, with economic development and special application occasions, castings are required to have higher heat dissipation capacity and anti-skid performance, and common heat dissipation ribs cannot meet the use requirements, so that the surfaces of the castings are required to be fully distributed with spurs, and the size of the spurs is determined according to the design requirements of the castings and is generally 0.5-2mm high; compared with the traditional casting coating which requires a casting blank to be smooth and have no burrs, the casting coating requires the surface of the casting to be uniformly distributed with the burrs in special application occasions, so that the heat dissipation or anti-skid capability of the casting can be obviously improved. Under the background, the casting production requirement can be met only by the special functional coating, and the production cost is reduced.
Disclosure of Invention
In view of the above, the invention aims to provide a casting foaming coating and a preparation method thereof, the casting foaming coating uses a foaming agent with a certain mesh number as a pit or pit main forming material, the pit or pit is generated by gasification during combustion, a foam particle drifting phenomenon is easily generated during coating due to a large density difference between foam and refractory aggregate, and a coupling mode is increased by increasing a foam film covering mode, so that the adhesion force of the foam particles is increased, the surface of a casting reaches the design requirement, and the large-scale production and preparation of the casting in special application occasions are facilitated.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the casting foaming coating is prepared from the following raw materials in percentage by weight: 0.1-0.5% of foaming agent, 55-65% of refractory material, 3-5% of iron oxide red, 6-14% of adhesive, 6-10% of suspending agent, 4-8% of coupling agent and a proper amount of alcohol.
Furthermore, the mesh number of the foaming agent is 2-8 meshes, and the foaming agent is a foam foaming agent.
Furthermore, the strength of the refractory material is 8-30 meshes, and the refractory material is made of refractory aggregate with low density, such as graphite, microporous silicon oxide, microporous aluminum oxide and the like.
Further, the coupling agent is KH550, and the suspending agent is lithium bentonite.
The preparation method of the casting foaming coating comprises the following steps:
step (1): mixing the foaming agent with the thick resin liquid and the coupling agent KH550, wherein the viscosity is 16-22 seconds, and uniformly mixing and stirring to ensure that the surface of the mixture has higher viscosity;
step (2): mixing and stirring the refractory material, thinner resin liquid, suspending agent and alcohol uniformly with the viscosity of 10-15 seconds;
and (3): and (3) mixing and stirring the mixed materials in the step (1) and the step (2) to obtain the casting foaming coating.
Further, the brushing method of the casting foaming coating comprises the following steps: firstly, coating a layer of common casting foaming material in a cavity of a model, respectively selecting graphite, zircon powder, corundum, bauxite and the like as refractory aggregate according to casting material and economic requirements, firing a coating after ignition to prevent a cast from sticking a bur and the model and increase the adhesive force of the casting foaming coating, then coating the casting foaming coating on the basis of the first coating, and then igniting to form pits and pockmarks.
Furthermore, the height of the spurs formed in the mould cavity when the casting foaming coating is used after being coated is 0.25-2mm, and the spurs are uniformly distributed.
Further, the casting foaming coating prepared by the invention comprises but is not limited to cast steel, and also comprises nonferrous metals such as cast iron, cast aluminum, cast copper and the like, and only refractory aggregate needs to be changed.
Compared with the prior art, the casting foaming coating has the following advantages:
the casting foaming coating disclosed by the invention takes a foaming agent with a certain mesh number as a pit or pit main forming material, the pit or pit is generated by gasification during combustion, as the density difference between foam and refractory aggregate is larger, the foam particle drifting phenomenon is easy to generate during coating, the foam particle adhesive force is increased by increasing the foam coating mode and increasing the coupling mode, in order to ensure the consistency during coating, a common casting coating is coated firstly to form a compact protective coating with the inner surface of a model or a cavity, then the foaming coating is coated, molten steel enters the pit or pit when the molten steel is filled, and after cooling, a large number of uniformly distributed spurs are formed at the pit or pit, so that the surface of a casting reaches the design requirement, and the large-batch production and preparation of the casting in special application occasions are facilitated.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meanings as commonly understood by one of ordinary skill in the art to which the present invention belongs.
The present invention will be described in detail below.
Example 1
When the casting foaming coating is applied to iron castings, the components and the proportion are as follows: 0.2% of foaming agent, 65% of refractory material, 3% of iron oxide red, 10% of adhesive, 6% of suspending agent, 4% of coupling agent and a proper amount of alcohol.
The specific preparation method comprises the steps of mixing foaming agent particles, a coupling agent and a resin liquid, adjusting the viscosity to 18 seconds, mixing graphite, iron oxide red, a binding agent and a suspending agent according to a proportion, adjusting the viscosity to 12 seconds, and finally mixing the materials together for later use.
The brushing method in specific use comprises the following steps: and (3) coating the graphite coating without the foaming agent for the first time, then igniting, coating the casting foaming coating after cooling, and forming a large number of pits or pockmarks on the surface of the coating after igniting again.
After the casting foaming coating is coated, molten iron can be poured according to a conventional pouring process, and after a casting is cooled, the spurs uniformly distributed on the surface are obtained.
Example 2
When the casting foaming coating is applied to steel castings, the components and the proportion are as follows: 0.2% of foaming agent, 60% of silica sand, 5% of iron oxide red, 14% of adhesive, 8% of suspending agent, 5% of coupling agent and a proper amount of alcohol.
The specific preparation method comprises the steps of mixing foaming agent particles, a coupling agent and a resin liquid, adjusting the viscosity to 20 seconds, mixing graphite, iron oxide red, a binding agent and a suspending agent according to a ratio, adjusting the viscosity to 13 seconds, and finally mixing the materials together for later use.
The brushing method in specific use comprises the following steps: and (3) coating the graphite coating without the foaming agent for the first time, then igniting, coating the casting foaming coating after cooling, and forming a large number of pits or pockmarks on the surface of the coating after igniting again.
After the casting foaming coating is coated, molten steel can be poured according to a conventional pouring process, and after a casting is cooled, the spurs uniformly distributed on the surface are obtained.
Example 3
When the casting foaming coating is applied to aluminum castings, the components and the proportion are as follows: 0.2% of foaming agent, 55% of quartz sand, 3% of iron oxide red, 14% of adhesive, 8% of suspending agent, 8% of coupling agent and a proper amount of alcohol.
The specific preparation method comprises the steps of mixing foaming agent particles, a coupling agent and a resin liquid, adjusting the viscosity to be 22 seconds, mixing graphite, iron oxide red, a binding agent and a suspending agent according to a proportion, adjusting the viscosity to be 15 seconds, and finally mixing the materials together for later use.
The brushing method in specific use comprises the following steps: and (3) coating the graphite coating without the foaming agent for the first time, then igniting, coating the casting foaming coating after cooling, and forming a large number of pits or pockmarks on the surface of the coating after igniting again.
After the casting foaming coating is coated, molten aluminum can be poured according to a conventional pouring process, and after a casting is cooled, the spurs uniformly distributed on the surface are obtained.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A casting foaming coating is characterized in that: the casting foaming coating is prepared from the following raw materials in percentage by weight: 0.1-0.5% of foaming agent, 55-65% of refractory material, 3-5% of iron oxide red, 6-14% of adhesive, 6-10% of suspending agent, 4-8% of coupling agent and a proper amount of alcohol.
2. A foundry foaming coating according to claim 1, wherein: the mesh number of the foaming agent is 2-8 meshes, and the foaming agent is a foam foaming agent.
3. A foundry foaming coating according to claim 1, wherein: the strength of the refractory material is 8-30 meshes, and the refractory material is made of refractory aggregate with low density, such as graphite, microporous silicon oxide, microporous aluminum oxide and the like.
4. A foundry foaming coating according to claim 1, wherein: the coupling agent is KH550, and the suspending agent is lithium bentonite.
5. A method of making a foundry foaming coating as claimed in any one of claims 1 to 4, wherein: the method comprises the following steps:
step (1): mixing the foaming agent with the thick resin liquid and the coupling agent KH550, wherein the viscosity is 16-22 seconds, and uniformly mixing and stirring to ensure that the surface of the mixture has higher viscosity;
step (2): mixing and stirring the refractory material, thinner resin liquid, suspending agent and alcohol uniformly with the viscosity of 10-15 seconds;
and (3): and (3) mixing and stirring the mixed materials in the step (1) and the step (2) to obtain the casting foaming coating.
6. The method for manufacturing the casting foaming paint as claimed in claim 5, wherein the method comprises the following steps: the brushing method of the casting foaming coating comprises the following steps: firstly, coating a layer of common casting foaming material in a cavity of a model, firing a coating after ignition to prevent a cast from sticking with the model by a bur, simultaneously increasing the adhesive force of the casting foaming coating, then coating the casting foaming coating on the basis of the first coating, and then igniting to form pits and pockmarks.
7. The method for manufacturing the casting foaming paint as claimed in claim 5, wherein the method comprises the following steps: when the casting foaming coating is used after being coated, the height of the spurs formed in the mold cavity is 0.25-2mm, and the spurs are uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111423460.1A CN114210912A (en) | 2021-11-26 | 2021-11-26 | Casting foaming coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111423460.1A CN114210912A (en) | 2021-11-26 | 2021-11-26 | Casting foaming coating and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114210912A true CN114210912A (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111423460.1A Pending CN114210912A (en) | 2021-11-26 | 2021-11-26 | Casting foaming coating and preparation method thereof |
Country Status (1)
| Country | Link |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2829048A1 (en) * | 2001-08-31 | 2003-03-07 | Peugeot Citroen Automobiles Sa | Coating compound for the secondary coating of a metal mould, incorporating a foaming agent possibly associated with agents for provoking porosity, homogeneity and adherence in the secondary coating |
| CN103861994A (en) * | 2013-12-23 | 2014-06-18 | 宁波钰烯阴极保护材料有限责任公司 | Coating for producing tubular high-silicon cast iron positive electrode and preparation method of coating |
| CN103949579A (en) * | 2014-04-01 | 2014-07-30 | 西安工程大学 | Alcohol radical red bayberry-shaped centrifugation radiant tube casting paint and preparation method thereof |
| US20150298200A1 (en) * | 2014-04-21 | 2015-10-22 | Ask Chemicals Gmbh | Coating compounds for casting moulds and cores that prevent reaction gas defects |
| JP2016120517A (en) * | 2014-12-25 | 2016-07-07 | 花王株式会社 | Coating agent composition for lost foam pattern |
| CN108044059A (en) * | 2017-12-08 | 2018-05-18 | 新昌县恒杰空调部件有限公司 | A kind of brushing method of the evaporative pattern of Technology for Air-Conditioner Compressor Stand |
| CN110508744A (en) * | 2019-09-20 | 2019-11-29 | 四川耀业科技股份有限公司 | A kind of production technology of the coating for being used to form cylinder jacket burr and burr cylinder sleeve |
-
2021
- 2021-11-26 CN CN202111423460.1A patent/CN114210912A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2829048A1 (en) * | 2001-08-31 | 2003-03-07 | Peugeot Citroen Automobiles Sa | Coating compound for the secondary coating of a metal mould, incorporating a foaming agent possibly associated with agents for provoking porosity, homogeneity and adherence in the secondary coating |
| CN103861994A (en) * | 2013-12-23 | 2014-06-18 | 宁波钰烯阴极保护材料有限责任公司 | Coating for producing tubular high-silicon cast iron positive electrode and preparation method of coating |
| CN103949579A (en) * | 2014-04-01 | 2014-07-30 | 西安工程大学 | Alcohol radical red bayberry-shaped centrifugation radiant tube casting paint and preparation method thereof |
| US20150298200A1 (en) * | 2014-04-21 | 2015-10-22 | Ask Chemicals Gmbh | Coating compounds for casting moulds and cores that prevent reaction gas defects |
| JP2016120517A (en) * | 2014-12-25 | 2016-07-07 | 花王株式会社 | Coating agent composition for lost foam pattern |
| CN108044059A (en) * | 2017-12-08 | 2018-05-18 | 新昌县恒杰空调部件有限公司 | A kind of brushing method of the evaporative pattern of Technology for Air-Conditioner Compressor Stand |
| CN110508744A (en) * | 2019-09-20 | 2019-11-29 | 四川耀业科技股份有限公司 | A kind of production technology of the coating for being used to form cylinder jacket burr and burr cylinder sleeve |
Non-Patent Citations (1)
| Title |
|---|
| 屈银虎, 姜鑫: "树脂砂实型铸造工艺的研究", 铸造技术, no. 05, 30 September 2003 (2003-09-30) * |
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