CN103252446A - Talc powder coating for iron casting die cavity - Google Patents
Talc powder coating for iron casting die cavity Download PDFInfo
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- CN103252446A CN103252446A CN2013101462268A CN201310146226A CN103252446A CN 103252446 A CN103252446 A CN 103252446A CN 2013101462268 A CN2013101462268 A CN 2013101462268A CN 201310146226 A CN201310146226 A CN 201310146226A CN 103252446 A CN103252446 A CN 103252446A
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- powder coating
- talcum powder
- sodium carboxymethyl
- carboxymethyl starch
- die cavity
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Abstract
The invention discloses a talc powder coating for an iron casting die cavity. The talc powder coating comprises the following components according to parts by weight: 80-100 parts of talc powder, 5-10 parts of bentonite, 2-6 parts of sodium carboxymethyl starch mixture, a vinyl resin liquid and the balance of water, wherein the vinyl resin liquid accounts for 3-7wt% of the talc powder coating; and the sodium carboxymethyl starch mixture comprises the following components according to parts by weight: 6-15 parts of sodium carboxymethyl starch, 1-2 parts of ethanol, and 100 parts of water. The coating is resistant to corrosion, fire and oxidation, and the components are simple and easy to prepare; and meanwhile, the cost is low.
Description
Technical field
The present invention relates to a kind of coating, relate in particular to a kind of talcum powder coating, specifically be applicable to smearing of ironcasting sand mold die cavity.
Background technology
Fast development along with foundry industry, requirement to surface quality of continuous castings is more and more higher, especially the whether whether original more high requirement of bright and clean proposition of scab and surface of cast(ing) surface, at this moment just need improve casting technique and reach requirement, a kind of method be in the sand mold die cavity, smear one deck fire prevention, high temperature resistant, corrosion-resistant, cementability is good, coating stable in properties under normal temperature and high pressure, never obtains the foundry goods of not scab, any surface finish.
The Chinese patent publication number is CN1082466A, it is refractory material with graphite powder, zirconium English powder, high-alumina fly, titanium slag powder etc. that the patent of invention that open day is on February 23rd, 1994 discloses a kind of, bentonite, Ludox, calgon, CMC, kaolin are suspending agent and bonding agent, and the water based paint that is mixed with of di-iron trioxide, chaff alcohol and water, all good through its suspension of application in practice, dispersiveness, crack resistance, high-temperature stability.Though should invention stable performance in foundry industry now, be widely used, its composition is too complicated, preparation process is many, and do not possess corrosion resistance, anti-flammability and non-oxidizability, cohesive also a little less than.
Summary of the invention
At above-mentioned defective of the prior art, the invention provides that a kind of composition is simple, formulation operations is simple and easy, have corrosion resistance, anti-flammability and non-oxidizability, simultaneously the talcum powder coating that is used for the ironcasting die cavity that to a certain degree improved of cohesive.
For realizing above purpose, technical scheme provided by the invention is: a kind of talcum powder coating for the ironcasting die cavity, its constituent and weight portion ratio thereof are: talcum powder 80-100, bentonite 5-10, sodium carboxymethyl starch mixture 2-6, and a kind of liquid ethylene base resin, the mass percent that described liquid ethylene base resin accounts for talcum powder coating is 3-7%, all the other are water;
Wherein, the constituent of described sodium carboxymethyl starch mixture and weight portion ratio thereof are: sodium carboxymethyl starch 6-15, ethanol 1-2, water 100.
Preferably, the constituent of described talcum powder coating and weight portion ratio thereof are: talcum powder 85-95, and bentonite 3-8, sodium carboxymethyl starch mixture 3-4, all the other are water.
Preferably, the constituent of described sodium carboxymethyl starch and weight portion ratio thereof are: sodium carboxymethyl starch 8-12, ethanol 1.3-1.6, water 100.
Preferably, described bentonite is the potassium base bentonite.
Preferably, described talcum powder coating is suspension coating.
Compared with prior art, beneficial effect of the present invention is:
1, since constituent and the weight portion ratio thereof of a kind of talcum powder coating for the ironcasting die cavity of the present invention be: talcum powder 80-100, activated bentonite 5-10, sodium carboxymethyl starch mixture 2-6, all the other are water, main material has only three kinds, and kind is few, and preparation is simple.Therefore composition of the present invention is simple, prepares simple and easy.
2, because a kind of vinylite that also has certain ingredients for the talcum powder coating of ironcasting die cavity of the present invention, selecting vinylite is because it has good corrosion resistance, anti-flammability and non-oxidizability, can solidify rapidly simultaneously, obtain working strength very soon, the mass percent that vinylite accounts for talcum powder coating is 3-7%, all the other are water, and this quality proportioning can allow its corrosion resistance, anti-flammability and non-oxidizability reach optimum value.Therefore coating of the present invention possesses corrosion resistance, anti-flammability and non-oxidizability.
3, because a kind of talcum powder coating for the ironcasting die cavity of the present invention also has the sodium carboxymethyl starch mixture of certain ingredients, selecting the reason of sodium carboxymethyl starch is that it has good water imbibition, water-swellable, fine size, do not lump, prior when satisfying all properties of bonding agent cost low, being fit to factory is equipped with, mixture adopts sodium carboxymethyl starch 6-15 in addition, ethanol 1-2, and water 100 mixes, the basis of having only sodium carboxymethyl starch, two kinds of materials of water in routine has added ethanol, after using ethanol wetting earlier, water dissolving again, effect can be better.
The specific embodiment
Below in conjunction with the specific embodiment invention is described in further detail
A kind of talcum powder coating for the ironcasting die cavity, its constituent and weight portion ratio thereof are: talcum powder 80-100, bentonite 5-10, sodium carboxymethyl starch mixture 2-6, all the other are water.
The constituent that the preferably talc powder is coated with and weight portion ratio thereof are: talcum powder 85-95, and bentonite 3-8, sodium carboxymethyl starch mixture 3-4, all the other are water.
The preferably talc powder coating also comprises a kind of liquid ethylene base resin, and the mass percent that this liquid ethylene base resin accounts for talcum powder coating is 3-7%, and all the other are water.
Constituent and the weight portion ratio thereof of preferred sodium carboxymethyl starch are: sodium carboxymethyl starch 8-12, ethanol 1.5, water 100.
Preferred activated bentonite is the potassium base bentonite.
Preferred talcum powder coating is suspension coating.
Embodiment 1: a kind of talcum powder coating for the ironcasting die cavity, its constituent and weight portion ratio thereof are: talcum powder 80, bentonite 5, sodium carboxymethyl starch mixture 2, all the other are water, talcum powder coating also comprises a kind of liquid ethylene base resin, and the mass percent that this liquid ethylene base resin accounts for talcum powder coating is 3%, and all the other are water; The constituent of sodium carboxymethyl starch mixture and weight portion ratio thereof are: sodium carboxymethyl starch 6, ethanol 1, water 100; Bentonite preferable methyl bentonite; Talcum powder coating is liquid coating.
Embodiment 2: a kind of talcum powder coating for the ironcasting die cavity, its constituent and weight portion ratio thereof are: talcum powder 100, bentonite 10, sodium carboxymethyl starch mixture 6, all the other are water, talcum powder coating also comprises a kind of liquid ethylene base resin, and the mass percent that this liquid ethylene base resin accounts for talcum powder coating is 7%, and all the other are water; The constituent of sodium carboxymethyl starch mixture and weight portion ratio thereof are: sodium carboxymethyl starch 15, ethanol 2, water 100; Bentonite preferable methyl bentonite; Talcum powder coating is liquid coating.
Embodiment 3: a kind of talcum powder coating for the ironcasting die cavity, its constituent and weight portion ratio thereof are: talcum powder 90, bentonite 8, sodium carboxymethyl starch mixture 4, all the other are water, talcum powder coating also comprises a kind of liquid ethylene base resin, and the mass percent that this liquid ethylene base resin accounts for talcum powder coating is 5%, and all the other are water; The constituent of sodium carboxymethyl starch mixture and weight portion ratio thereof are: sodium carboxymethyl starch 10, ethanol 1.5, water 100; Bentonite preferable methyl bentonite; Talcum powder coating is liquid coating.
This shows that the present invention not only composition is simple, prepare simple and easyly that and cost is low, has good corrosion resistance, anti-flammability and non-oxidizability.
The above only is preferred embodiments of the present invention; protection scope of the present invention is not limited with above-mentioned embodiment; any those skilled in the art of being familiar with according to disclosed content do etc. little modification or variation, all should include in the protection domain of record of claims.
Claims (5)
1. talcum powder coating that is used for the ironcasting die cavity, it is characterized in that, the constituent of described talcum powder coating and weight portion ratio thereof are: talcum powder 80-100, bentonite 5-10, sodium carboxymethyl starch mixture 2-6, and a kind of liquid ethylene base resin, the mass percent that described liquid ethylene base resin accounts for talcum powder coating is 3-7%, all the other are water, wherein, the constituent of described sodium carboxymethyl starch mixture and weight portion ratio thereof are: sodium carboxymethyl starch 6-15, ethanol 1-2, water 100.
2. a kind of talcum powder coating for the ironcasting die cavity according to claim 1 is characterized in that the constituent of described talcum powder coating and weight portion ratio thereof are: talcum powder 85-95, bentonite 3-8, sodium carboxymethyl starch mixture 3-4.
3. a kind of talcum powder coating for the ironcasting die cavity according to claim 1 is characterized in that the constituent of described sodium carboxymethyl starch mixture and weight portion ratio thereof are: sodium carboxymethyl starch 8-12, ethanol 1.3-1.6, water 100.
4. a kind of talcum powder coating for the ironcasting die cavity according to claim 1 and 2, it is characterized in that: described bentonite is the potassium base bentonite.
5. a kind of talcum powder coating for the ironcasting die cavity according to claim 1, it is characterized in that: described talcum powder coating is suspension coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310146226.8A CN103252446B (en) | 2013-04-25 | 2013-04-25 | Talc powder coating for iron casting die cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310146226.8A CN103252446B (en) | 2013-04-25 | 2013-04-25 | Talc powder coating for iron casting die cavity |
Publications (2)
| Publication Number | Publication Date |
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| CN103252446A true CN103252446A (en) | 2013-08-21 |
| CN103252446B CN103252446B (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310146226.8A Active CN103252446B (en) | 2013-04-25 | 2013-04-25 | Talc powder coating for iron casting die cavity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2529140A (en) * | 2014-07-09 | 2016-02-17 | Zotefoams Plc | Polymer foam production improvement |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267687A (en) * | 2000-04-26 | 2000-09-27 | 温小平 | Aqueous paint additive |
| US20040042965A1 (en) * | 2001-10-25 | 2004-03-04 | Kaoru Usui | Exothermic composition and exothermic article using the compositions, and method for producing the exothermic article |
| CN1538360A (en) * | 2003-10-22 | 2004-10-20 | 熊春宁 | Antifalse copying paper and detector possessing memory cipher and is detecting method |
| CN102558932A (en) * | 2010-12-15 | 2012-07-11 | 张家港市惠发塑胶有限公司 | Composite coating additive |
-
2013
- 2013-04-25 CN CN201310146226.8A patent/CN103252446B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267687A (en) * | 2000-04-26 | 2000-09-27 | 温小平 | Aqueous paint additive |
| US20040042965A1 (en) * | 2001-10-25 | 2004-03-04 | Kaoru Usui | Exothermic composition and exothermic article using the compositions, and method for producing the exothermic article |
| CN1538360A (en) * | 2003-10-22 | 2004-10-20 | 熊春宁 | Antifalse copying paper and detector possessing memory cipher and is detecting method |
| CN102558932A (en) * | 2010-12-15 | 2012-07-11 | 张家港市惠发塑胶有限公司 | Composite coating additive |
Non-Patent Citations (2)
| Title |
|---|
| 王天军等: "《铸造手册 第4卷 造型材料》", 31 January 2012, 化学工业出版社 * |
| 黄天佑: "《铸造手册 第4卷 造型材料》", 31 January 2012, article "造型材料" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2529140A (en) * | 2014-07-09 | 2016-02-17 | Zotefoams Plc | Polymer foam production improvement |
| GB2529140B (en) * | 2014-07-09 | 2016-09-14 | Zotefoams Plc | Coating formulation to prevent polymer foam adhesion to solid substrate during foam production |
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| Publication number | Publication date |
|---|---|
| CN103252446B (en) | 2015-07-01 |
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