CN110681818A - Cast iron coating for lost foam and preparation method thereof - Google Patents

Cast iron coating for lost foam and preparation method thereof Download PDF

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Publication number
CN110681818A
CN110681818A CN201911086212.5A CN201911086212A CN110681818A CN 110681818 A CN110681818 A CN 110681818A CN 201911086212 A CN201911086212 A CN 201911086212A CN 110681818 A CN110681818 A CN 110681818A
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CN
China
Prior art keywords
parts
cast iron
lost foam
portions
water
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CN201911086212.5A
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Chinese (zh)
Inventor
刘金鹏
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Zaozhuang Yiteng Machinery Manufacturing Co Ltd
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Zaozhuang Yiteng Machinery Manufacturing Co Ltd
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Priority to CN201911086212.5A priority Critical patent/CN110681818A/en
Publication of CN110681818A publication Critical patent/CN110681818A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C3/00Selection of compositions for coating the surfaces of moulds, cores, or patterns

Abstract

The invention discloses a cast iron coating for a lost foam, which is prepared from the following raw materials in parts by weight: 149000 parts of quartz powder, 151000 parts of mullite 49000 parts, 141000 parts of water 139000 parts, 6100 parts of attapulgite, 2500 parts of carboxymethyl cellulose 2300 parts, 2600 parts of adhesive 2400 parts, 5100 parts of basic resin 4900 parts, 8-12 parts of active agent, 6100 parts of wood fiber 5900 parts, and 8-12 parts of n-octanol.

Description

Cast iron coating for lost foam and preparation method thereof
Technical Field
The invention relates to an industrial coating, in particular to a cast iron coating for a lost foam and a preparation method thereof.
Background
The lost foam casting is full mold casting of the foam plastic mold by adopting binder-free dry sand combined with a vacuumizing technology. The domestic main calling methods comprise dry sand full mold casting and negative pressure full mold casting, lost foam casting is one of the most advanced casting processes in the world at present, is known as a revolution in casting history, and is called as 21 st century green casting at home and abroad.
Lost foam casting has entered a rapid growth period from the technological innovation period, from mass production to single-piece, small-batch production; from cast steel, gray iron castings to non-ferrous metal castings; from large to various sized castings; the application range of lost foam casting from large and medium-sized casting enterprises to medium and small casting enterprises is continuously expanded, foam plastics are frequently adopted as model materials of foam plastic models, the foam plastics are plastics taking synthetic resin as a base material and having countless micro-pore structures inside, the traditional casting coating only plays a role in blocking and isolating between a casting piece and a casting mould to achieve the purpose of preventing sand sticking, but the defects of sand sticking, sand holes, air holes, carbon slag and the like of the casting piece are easily caused by poor adhesion, low strength, poor fire resistance and large gas evolution amount of the common casting coating at high temperature, and the produced product has low qualification rate due to the defects of the problems of the casting coating in the existing casting process, so that the resource waste and the production cost are high.
Disclosure of Invention
The invention aims to provide a cast iron coating for a lost foam and a preparation method thereof, which aim to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the cast iron coating for the lost foam comprises the following raw materials in parts by weight: 149000 parts of quartz powder, 151000 parts of mullite 49000 parts, 141000 parts of water 139000 parts, 6100 parts of attapulgite 5900 parts, 2500 parts of sodium carboxymethylcellulose 2300 parts, 2600 parts of adhesive 2400 parts, 5100 parts of alkali resin 4900 parts, 8-12 parts of active agent, 6100 parts of wood fiber 5900 parts and 8-12 parts of n-octanol.
As a further scheme of the invention: the feed comprises the following raw materials in parts by weight: 149500 portions of quartz powder, 150500 portions of mullite 49500, 140500 portions of water 139500, 5950 portions of attapulgite, 2350 portions of sodium carboxymethyl cellulose, 2450 portions of adhesive 2450, 4950 portions of 5050 portions of alkali resin, 9-11 portions of activator, 5950 portions of 6050 portions of wood fiber and 9-11 portions of n-octanol.
As a still further scheme of the invention: the feed comprises the following raw materials in parts by weight: 149800 parts of quartz powder 150200 parts, 49800 parts of mullite 50200 parts, 139800 parts of water 140200 parts, 5980 parts of attapulgite 6020 parts, 2380 parts of sodium carboxymethyl cellulose 2420 parts, 2480 parts of adhesive 2520 parts, 4980 parts of alkali resin 5020 parts, 9.5-10.5 parts of active agent, 5980 parts of wood fiber 6020 parts and 9.5-10.5 parts of n-octanol.
As a still further scheme of the invention: the feed comprises the following raw materials in parts by weight: 150000 parts of quartz powder, 50000 parts of mullite, 140000 parts of water, 6000 parts of attapulgite, 2400 parts of sodium carboxymethyl cellulose, 2500 parts of adhesive, 5000 parts of alkaline resin, 10 parts of active agent, 6000 parts of wood fiber and 10 parts of n-octanol.
As a still further scheme of the invention: the adhesive is polyvinyl acetate adhesive.
As a still further scheme of the invention: the thickness of the brush coating of the cast iron coating for the lost foam is 1.2-1.5, and a coating mode of dip coating is adopted.
As a still further scheme of the invention: the drying temperature of the cast iron coating for the lost foam is 40-55 ℃.
The preparation method of the cast iron coating for the lost foam comprises the following steps:
1) soaking the carboxymethylcellulose sodium in 39-41 parts of water for 11-13h, and stirring with a stirring vehicle of 2900-;
2) adding 39-41 parts of water into the attapulgite, and stirring into paste to obtain a second raw material;
3) adding the obtained raw material I and the raw material II into a stirrer, adding the rest of water, adding an adhesive, an alkaline resin, an active agent, n-octanol and wood fibers, and stirring for 19-21min to obtain a raw material III;
4) adding quartz powder and mullite into the raw material III, stirring for 2.5-3.5h, and standing for 9.5-10.5 h.
As a still further scheme of the invention: the temperature of the water is 40-70 ℃.
Compared with the prior art, the invention has the beneficial effects that: the cast iron coating for the lost foam not only can play a role in blocking and isolating between a casting and a casting mold to achieve the purpose of preventing sand adhesion, but also overcomes the defects of poor adhesion, low strength, poor fire resistance and large gas evolution, and reduces the defect problems of sand adhesion, sand holes, air holes, carbon slag and the like in the production of the casting, so that the qualification rate of the produced finished product is improved, unnecessary resource waste is avoided, and the production cost is saved.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to specific embodiments.
Example 1
The cast iron coating for the lost foam comprises the following raw materials in parts by weight: 149000 parts of quartz powder, 49000 parts of mullite, 139000 parts of water, 5900 parts of attapulgite, 2300 parts of sodium carboxymethyl cellulose, 2400 parts of an adhesive, 4900 parts of an alkaline resin, 8 parts of an active agent, 5900 parts of wood fiber and 8 parts of n-octanol.
In this embodiment, the preparation method of the cast iron coating for the lost foam comprises the following steps:
1) soaking the carboxymethylcellulose sodium in 39 parts of water for 11h, and stirring with a 2900r/min stirrer to obtain a first raw material;
2) adding 39 parts of water into the attapulgite, and stirring into paste to obtain a second raw material;
3) adding the obtained raw material I and the raw material II into a stirrer, adding the rest of water, adding an adhesive, an alkaline resin, an active agent, n-octanol and wood fibers, and stirring for 19min to obtain a raw material III;
4) adding quartz powder and mullite into the raw material III, stirring for 2.5h, and standing for 9.5 h.
Example 2
The cast iron coating for the lost foam comprises the following raw materials in parts by weight: 151000 parts of quartz powder, 51000 parts of mullite, 141000 parts of water, 6100 parts of attapulgite, 2500 parts of carboxymethyl cellulose, 2600 parts of adhesive, 5100 parts of alkaline resin, 12 parts of active agent, 6100 parts of wood fiber and 12 parts of n-octanol.
In this embodiment, the preparation method of the cast iron coating for the lost foam comprises the following steps:
1) soaking the carboxymethylcellulose sodium in 41 parts of water for 13h, and stirring with a stirrer at 3100r/min to obtain a paste;
2) adding 41 parts of water into the attapulgite, and stirring into paste to obtain a second raw material;
3) adding the obtained raw material I and the raw material II into a stirrer, adding the rest of water, adding an adhesive, an alkaline resin, an active agent, n-octanol and wood fibers, and stirring for 21min to obtain a raw material III;
4) adding quartz powder and mullite into the raw material III, stirring for 3.5h, and standing for 10.5 h.
Example 3
The cast iron coating for the lost foam comprises the following raw materials in parts by weight: 149500 parts of quartz powder, 49500 parts of mullite, 139500 parts of water, 5950 parts of attapulgite, 2350 parts of sodium carboxymethyl cellulose, 2450 parts of adhesive, 4950 parts of alkaline resin, 9 parts of active agent, 5950 parts of wood fiber and 9 parts of n-octanol.
In this embodiment, the preparation method of the cast iron coating for the lost foam comprises the following steps:
example 4
The cast iron coating for the lost foam comprises the following raw materials in parts by weight: 150500 parts of quartz powder, 50500 parts of mullite, 140500 parts of water, 6050 parts of attapulgite, 2450 parts of carboxymethyl cellulose sodium, 2550 parts of adhesive, 5050 parts of alkaline resin, 11 parts of active agent, 6050 parts of wood fiber and 11 parts of n-octanol.
In this embodiment, the preparation method of the cast iron coating for the lost foam comprises the following steps:
example 5
The cast iron coating for the lost foam comprises the following raw materials in parts by weight: 149800 parts of quartz powder, 49800 parts of mullite, 139800 parts of water, 5980 parts of attapulgite, 2380 parts of sodium carboxymethyl cellulose, 2480 parts of adhesive, 4980 parts of alkaline resin, 9.5 parts of active agent, 5980 parts of wood fiber and 9.5 parts of n-octanol.
In this embodiment, the preparation method of the cast iron coating for the lost foam comprises the following steps:
1) soaking the sodium carboxymethyl cellulose in 40 parts of water for 12 hours, and stirring the sodium carboxymethyl cellulose into paste by using a 3000r/min stirrer to obtain a first raw material;
2) adding 40 parts of water into the attapulgite, and stirring into paste to obtain a second raw material;
3) adding the obtained raw material I and the raw material II into a stirrer, adding the rest of water, adding an adhesive, an alkaline resin, an active agent, n-octanol and wood fibers, and stirring for 20min to obtain a raw material III;
4) adding quartz powder and mullite into the raw material III, stirring for 3 hours, and standing for 10 hours.
Example 6
The cast iron coating for the lost foam comprises the following raw materials in parts by weight: 150200 parts of quartz powder, 50200 parts of mullite, 140200 parts of water, 6020 parts of attapulgite, 2420 parts of sodium carboxymethyl cellulose, 2520 parts of adhesive, 5020 parts of basic resin, 10.5 parts of active agent, 6020 parts of wood fiber and 10.5 parts of n-octanol.
In this embodiment, the preparation method of the cast iron coating for the lost foam comprises the following steps:
1) soaking the carboxymethylcellulose sodium in 39 parts of water for 11h, and stirring with a 2900r/min stirrer to obtain a first raw material;
2) adding 39 parts of water into the attapulgite, and stirring into paste to obtain a second raw material;
3) adding the obtained raw material I and the raw material II into a stirrer, adding the rest of water, adding an adhesive, an alkaline resin, an active agent, n-octanol and wood fibers, and stirring for 21min to obtain a raw material III;
4) adding quartz powder and mullite into the raw material III, stirring for 2.5h, and standing for 10.5 h.
Example 7
The cast iron coating for the lost foam comprises the following raw materials in parts by weight: 150000 parts of quartz powder, 50000 parts of mullite, 140000 parts of water, 6000 parts of attapulgite, 2400 parts of sodium carboxymethyl cellulose, 2500 parts of adhesive, 5000 parts of alkaline resin, 10 parts of active agent, 6000 parts of wood fiber and 10 parts of n-octanol.
In this embodiment, the preparation method of the cast iron coating for the lost foam comprises the following steps:
1) soaking the sodium carboxymethyl cellulose in 40 parts of water for 12 hours, and stirring the sodium carboxymethyl cellulose into paste by using a 3000r/min stirrer to obtain a first raw material;
2) adding 40 parts of water into the attapulgite, and stirring into paste to obtain a second raw material;
3) adding the obtained raw material I and the raw material II into a stirrer, adding the rest of water, adding an adhesive, an alkaline resin, an active agent, n-octanol and wood fibers, and stirring for 20min to obtain a raw material III;
4) adding quartz powder and mullite into the raw material III, stirring for 3 hours, and standing for 10 hours.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (9)

1. The cast iron coating for the lost foam is characterized by comprising the following raw materials in parts by weight: 149000 parts of quartz powder, 151000 parts of mullite 49000 parts, 141000 parts of water 139000 parts, 6100 parts of attapulgite 5900 parts, 2500 parts of sodium carboxymethylcellulose 2300 parts, 2600 parts of adhesive 2400 parts, 5100 parts of alkali resin 4900 parts, 8-12 parts of active agent, 6100 parts of wood fiber 5900 parts and 8-12 parts of n-octanol.
2. The cast iron coating for the lost foam according to claim 1, comprising the following raw materials in parts by weight: 149500 portions of quartz powder, 150500 portions of mullite 49500, 140500 portions of water 139500, 5950 portions of attapulgite, 2350 portions of sodium carboxymethyl cellulose, 2450 portions of adhesive 2450, 4950 portions of 5050 portions of alkali resin, 9-11 portions of activator, 5950 portions of 6050 portions of wood fiber and 9-11 portions of n-octanol.
3. The cast iron coating for the lost foam according to claim 1, comprising the following raw materials in parts by weight: 149800 parts of quartz powder 150200 parts, 49800 parts of mullite 50200 parts, 139800 parts of water 140200 parts, 5980 parts of attapulgite 6020 parts, 2380 parts of sodium carboxymethyl cellulose 2420 parts, 2480 parts of adhesive 2520 parts, 4980 parts of alkali resin 5020 parts, 9.5-10.5 parts of active agent, 5980 parts of wood fiber 6020 parts and 9.5-10.5 parts of n-octanol.
4. The cast iron coating for the lost foam according to claim 2, comprising the following raw materials in parts by weight: 150000 parts of quartz powder, 50000 parts of mullite, 140000 parts of water, 6000 parts of attapulgite, 2400 parts of sodium carboxymethyl cellulose, 2500 parts of adhesive, 5000 parts of alkaline resin, 10 parts of active agent, 6000 parts of wood fiber and 10 parts of n-octanol.
5. The cast iron coating for a lost foam according to claim 1, wherein the binder is a polyvinyl acetate binder.
6. The cast iron paint for a lost foam according to claim 1, wherein the cast iron paint for a lost foam is applied by a dip coating method in a thickness of 1.2 to 1.5 by brush coating.
7. The cast iron paint for a lost foam according to claim 1, wherein the drying temperature of the cast iron paint for a lost foam in use is 40 to 55 ℃.
8. A method for preparing a cast iron coating for a lost foam according to any of claims 1 to 7, comprising the steps of:
1) soaking the carboxymethylcellulose sodium in 39-41 parts of water for 11-13h, and stirring with a stirring vehicle of 2900-;
2) adding 39-41 parts of water into the attapulgite, and stirring into paste to obtain a second raw material;
3) adding the obtained raw material I and the raw material II into a stirrer, adding the rest of water, adding an adhesive, an alkaline resin, an active agent, n-octanol and wood fibers, and stirring for 19-21min to obtain a raw material III;
4) adding quartz powder and mullite into the raw material III, stirring for 2.5-3.5h, and standing for 9.5-10.5 h.
9. The method for preparing a cast iron paint for a lost foam according to claim 8, wherein the temperature of the water is 40-70 ℃.
CN201911086212.5A 2019-11-08 2019-11-08 Cast iron coating for lost foam and preparation method thereof Pending CN110681818A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201911086212.5A CN110681818A (en) 2019-11-08 2019-11-08 Cast iron coating for lost foam and preparation method thereof

Publications (1)

Publication Number Publication Date
CN110681818A true CN110681818A (en) 2020-01-14

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57209746A (en) * 1981-06-20 1982-12-23 Nichias Corp Covering material for surface of molten metal
DE102010009144A1 (en) * 2010-02-24 2011-09-29 Vatramaxx Gmbh Heat-insulating refractory molding
CN105057568A (en) * 2015-07-27 2015-11-18 明光市留香泵业有限公司 Nanometer-titania-strengthening easily-strippable water-based paint for lost foam casting and preparing method of water-based paint
CN105081206A (en) * 2015-09-21 2015-11-25 马春田 Coating for lost foam iron casting
CN106216595A (en) * 2016-08-30 2016-12-14 河北瑞欧消失模科技有限公司 A kind of coating for lost foam casting
CN106424541A (en) * 2016-11-04 2017-02-22 南京工程学院 Water-based paint for expendable pattern cast steel and preparing method thereof
CN107649649A (en) * 2017-08-03 2018-02-02 六安万邦机械科技有限公司 A kind of surface processing technique of evaporative pattern
CN110038998A (en) * 2019-05-15 2019-07-23 扬州双集机械有限公司 A kind of disappearance die manufacturing process

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57209746A (en) * 1981-06-20 1982-12-23 Nichias Corp Covering material for surface of molten metal
DE102010009144A1 (en) * 2010-02-24 2011-09-29 Vatramaxx Gmbh Heat-insulating refractory molding
CN105057568A (en) * 2015-07-27 2015-11-18 明光市留香泵业有限公司 Nanometer-titania-strengthening easily-strippable water-based paint for lost foam casting and preparing method of water-based paint
CN105081206A (en) * 2015-09-21 2015-11-25 马春田 Coating for lost foam iron casting
CN106216595A (en) * 2016-08-30 2016-12-14 河北瑞欧消失模科技有限公司 A kind of coating for lost foam casting
CN106424541A (en) * 2016-11-04 2017-02-22 南京工程学院 Water-based paint for expendable pattern cast steel and preparing method thereof
CN107649649A (en) * 2017-08-03 2018-02-02 六安万邦机械科技有限公司 A kind of surface processing technique of evaporative pattern
CN110038998A (en) * 2019-05-15 2019-07-23 扬州双集机械有限公司 A kind of disappearance die manufacturing process

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