CN106180541A - A kind of cast steel novel environment friendly coating - Google Patents
A kind of cast steel novel environment friendly coating Download PDFInfo
- Publication number
- CN106180541A CN106180541A CN201610618942.5A CN201610618942A CN106180541A CN 106180541 A CN106180541 A CN 106180541A CN 201610618942 A CN201610618942 A CN 201610618942A CN 106180541 A CN106180541 A CN 106180541A
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- CN
- China
- Prior art keywords
- cast steel
- environment friendly
- coating
- novel environment
- friendly 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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Classifications
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- 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
Abstract
The invention discloses a kind of cast steel novel environment friendly coating, its chemical component weight percentage ratio is: zircon powder 35～40%, potassium silicate 2～3%, magnesia 30～35%, brown alundum powder 15～20%, Kaolin 5～10%, natural sodium bentonite 3～4.5%, dextrin 2～3%, aluminium-magnesium silicate suspension thixotropic thickening agent 4～5%, scab phenomenon can be effectively prevented produce, and price is cheap, safety and environmental protection.
Description
Technical field
The invention belongs to foundry engieering technical field of coatings, particularly relate to a kind of cast steel novel environment friendly coating.
Background technology
In order to reduce and avoid large-scale steel-casting to produce scab phenomenon, improve steel casting surface precision, reduce cleaning casting
The amount of labour of steel part, promotes steel-casting yield rate, then must solve following two subject matter: one is: the coating that moulding is selected
Should have stable Chemical Physics performance, refractoriness is high, and thermal coefficient of expansion is little.Two are: foundry sand should use tiny as far as possible
Circular sand, to reduce sand grains gap to greatest extent, reduces molten metal and penetrates into, prevent the generation of scab phenomenon.
During realizing the present invention, inventor finds that prior art at least there is problems in that at present, at home
Steel-casting enterprise mainly uses special sand to do facing sand and resistance at mould surface repeatedly brushing zirconium English powder to prevent large-scale steel-casting
Fire coating, but production cost is too high, it is also difficult to solve large-scale steel-casting surface scab phenomenon.
Summary of the invention
The technical problem to be solved is to provide in a kind of solution large-scale steel-casting production process incidental
The cast steel novel environment friendly coating of scab phenomenon.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is: a kind of cast steel novel environment friendly coating, its
Being characterised by, its chemical component weight percentage ratio is: zircon powder 35～40%, potassium silicate 2～3%, magnesia 30～35%, palm fibre
Schmigel 15～20%, Kaolin 5～10%, natural sodium bentonite 3～4.5%, dextrin 2～3%, aluminium-magnesium silicate suspends and touches
Become thickening agent 4～5%.
Coating particles size 40～70 purpose be 5～10%, 100～150 purpose be 10～15%, remaining be 200 mesh with
On.
Time when 25 DEG C, the detection of the detection pipe of φ 6.5mm, viscosity is 8～12s, and density is 1.6～2.0g/cm3, when 2h
Between time suspensibility >=95%, gas forming amount≤20ml/g when 850 DEG C.
A technical scheme in technique scheme has the advantage that or beneficial effect, with this cast steel environment-friendly novel
Coating application thickness reaches 2.0～2.5mm, can be effectively prevented scab phenomenon and produce, and price is cheap, safety and environmental protection.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, embodiment of the present invention will be made into one below
Step ground describes in detail.
Embodiment one
A kind of cast steel novel environment friendly coating, it is characterised in that its chemical component weight percentage ratio is: zircon powder 39%,
Potassium silicate 2%, magnesia 30%, brown alundum powder 15%, Kaolin 5%, natural sodium bentonite 3%, dextrin 2%, aluminium-magnesium silicate
Suspension thixotropic thickening agent 4%.
Coating particles size 40～70 purpose be 5%, 100～150 purpose be 10%, remaining is more than 200 mesh.
Embodiment two
A kind of cast steel novel environment friendly coating, it is characterised in that its chemical component weight percentage ratio is: zircon powder 35%,
Potassium silicate 3%, magnesia 30%, brown alundum powder 15%, Kaolin 5.5%, natural sodium bentonite 4.5%, dextrin 3%, silicic acid
Magnalium suspension thixotropic thickening agent 4%.
Coating particles size 40～70 purpose be 10%, 100～150 purpose be 15%, remaining is more than 200 mesh.
Embodiment three
A kind of cast steel novel environment friendly coating, it is characterised in that its chemical component weight percentage ratio is: zircon powder 35%,
Potassium silicate 2%, magnesia 34%, brown alundum powder 15%, Kaolin 5%, natural sodium bentonite 3%, dextrin 2%, aluminium-magnesium silicate
Suspension thixotropic thickening agent 4%.
Coating particles size 40～70 purpose be 7%, 100～150 purpose be 13%, remaining is more than 200 mesh.
Embodiment four
A kind of cast steel novel environment friendly coating, it is characterised in that its chemical component weight percentage ratio is: zircon powder 35%,
Potassium silicate 2%, magnesia 30%, brown alundum powder 19%, Kaolin 5%, natural sodium bentonite 3%, dextrin 2%, aluminium-magnesium silicate
Suspension thixotropic thickening agent 4%.
Coating particles size 40～70 purpose be 5%, 100～150 purpose be 15%, remaining is more than 200 mesh.
Embodiment five
A kind of cast steel novel environment friendly coating, it is characterised in that its chemical component weight percentage ratio is: zircon powder 35%,
Potassium silicate 2%, magnesia 30%, brown alundum powder 15%, Kaolin 9%, natural sodium bentonite 3%, dextrin 2%, aluminium-magnesium silicate
Suspension thixotropic thickening agent 4%.
Coating particles size 40～70 purpose be 5%, 100～150 purpose be 10%, remaining is more than 200 mesh.
Embodiment six
A kind of cast steel novel environment friendly coating, it is characterised in that its chemical component weight percentage ratio is: zircon powder 35%,
Potassium silicate 2.5%, magnesia 30.5%, brown alundum powder 15.5%, Kaolin 5.5%, natural sodium bentonite 3.5%, dextrin
2.5%, aluminium-magnesium silicate suspension thixotropic thickening agent 5%.
Coating particles size 40～70 purpose be 6%, 100～150 purpose be 12%, remaining is more than 200 mesh.
The thermal coefficient of expansion of zircon powder is less, is avoided that generation scab class defect；Thermal conductivity and heat storage coefficient, close
Spend all high than silica sand, can crystal grain thinning, improve steel-casting mechanical property；Thermo-chemical stability is high, be melted hardly metal or
Metal-oxide infiltrates, and is conducive to stoping metal to enter casting mold space, prevents penetration defect.
Potassium silicate belongs to alkali silicate, energy and ferrum, and aluminum effect generates insoluble silicate, at the internal layer of coating,
Potassium silicate generates one layer of meagre and tough and tensile molecular film on the metal surface, and this film has extremely good characteristic, can in case
Only the contacting of metal surface and anion in water and insoluble oxygen, thus can prevent burning corrosion and electrochemical corrosion
Raw.
The heat storage coefficient of magnesia is 1.5 times of silica sand, and thermal coefficient of expansion is less than silica sand, the volume not caused because of phase transformation
Suddenly change.It belongs to alkalescence fireproof coating, not with ferrum oxide or manganese oxide generation chemical reaction.Select above multiple platform powder
Its (zirconium English powder and Brown Alundum) just can be made a certain degree of sintering is produced at a temperature of pouring molten steel with proportioning. Kaolin has relatively
Little expansion, shrinkage and higher refractoriness.
Natural sodium bentonite has the strongest hygroscopicity, can adsorb and be equivalent to own vol 8～the water of 20 times and expand
To own vol 30 times；Aqueous medium can disperse in colloidal suspension, and there is certain viscosity, thixotropy and lubrication
Property, it has plasticity and caking property with the mixture of silt particle etc., has stronger cation exchange capacity (CEC) and absorbability.It was both
Can be as the binding agent of green-sand, it is also possible to as the suspending agent in water based paint.
Dextrin is in order to improve toughness and the surface wind dry strength of molding sand.
After mixing by the preparation of above composition, then interpolation suitable quantity of water is as solvent, and it is good that water easily makes coating obtain
Suspension, brushability, non-flowing, levelability, permeability and rheological characteristic, and inexpensive, be easy to get, nontoxic, odorless, safety.
The coating particles selecting 40～70 mesh and 100～150 mesh can form the skeleton of good permeability.
The coating selecting more than 200 mesh can be with gap between back-up sand molding sand grain, it is ensured that the fineness on surface.
Wherein, viscosity is when 25 DEG C, in the detection pipe of diameter phi 6.5mm, in 8～12s solidifications.
After using above-mentioned scheme, reach 2.0～2.5mm with this cast steel environment-friendly novel coating application thickness, Ke Yiyou
Prevent scab phenomenon from producing to effect, and price is cheap, safety and environmental protection.
Above the present invention is exemplarily described, it is clear that the present invention implements and is not subject to the restrictions described above,
As long as the improvement of the various unsubstantialities that the method design that have employed the present invention is carried out with technical scheme, or the most improved by this
Bright design and technical scheme directly apply to other occasion, all within protection scope of the present invention.
Claims (3)
1. a cast steel novel environment friendly coating, it is characterised in that its chemical component weight percentage ratio is: zircon powder 35～
40%, potassium silicate 2～3%, magnesia 30～35%, brown alundum powder 15～20%, Kaolin 5～10%, natural sodium bentonite 3
～4.5%, dextrin 2～3%, aluminium-magnesium silicate suspension thixotropic thickening agent 4～5%.
2. cast steel novel environment friendly coating as claimed in claim 1, it is characterised in that coating particles size 40～70 purpose is 5
～10%, 100～150 purpose be 10～15%, remaining is more than 200 mesh.
3. cast steel novel environment friendly coating as claimed in claim 2, it is characterised in that coating physical and chemical index is: when 25 DEG C, φ
When the detection pipe of 6.5mm detects, viscosity is 8～12s；Density is 1.6～2.0g/cm3；Suspensibility >=95% when the 2h time；?
Gas forming amount≤20ml/g when 850 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610618942.5A CN106180541A (en) | 2016-08-01 | 2016-08-01 | A kind of cast steel novel environment friendly coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610618942.5A CN106180541A (en) | 2016-08-01 | 2016-08-01 | A kind of cast steel novel environment friendly coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106180541A true CN106180541A (en) | 2016-12-07 |
Family
ID=57498019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610618942.5A Pending CN106180541A (en) | 2016-08-01 | 2016-08-01 | A kind of cast steel novel environment friendly coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106180541A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580797A (en) * | 2018-05-29 | 2018-09-28 | 济南圣泉集团股份有限公司 | A kind of centrifugal casting chill coating and preparation method thereof |
| CN109865793A (en) * | 2017-12-04 | 2019-06-11 | 辽宁法库陶瓷工程技术研究中心 | Utilize cast iron light cast paint and the preparation method of polishing slag preparation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58141830A (en) * | 1982-02-15 | 1983-08-23 | Honda Motor Co Ltd | Mold coating material for die casting |
| CN1182655A (en) * | 1997-10-08 | 1998-05-27 | 冶金工业部钢铁研究总院 | Coating for casting thin foundry goods |
| CN1666828A (en) * | 2005-01-18 | 2005-09-14 | 湖北工业大学 | Anti-seepage burnon casting paint made from alcohol base or aqueous sand powder |
| CN102371340A (en) * | 2011-10-10 | 2012-03-14 | 辛培兴 | Lost foam casting method for large casting |
| CN102430701A (en) * | 2011-11-29 | 2012-05-02 | 朱小英 | Coating for metal low pressure casting of magnesium alloy |
| CN105419552A (en) * | 2016-01-26 | 2016-03-23 | 云南凯琪消防科技有限公司 | Fire-resistant coating for steel structure and preparation method thereof |
-
2016
- 2016-08-01 CN CN201610618942.5A patent/CN106180541A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58141830A (en) * | 1982-02-15 | 1983-08-23 | Honda Motor Co Ltd | Mold coating material for die casting |
| CN1182655A (en) * | 1997-10-08 | 1998-05-27 | 冶金工业部钢铁研究总院 | Coating for casting thin foundry goods |
| CN1666828A (en) * | 2005-01-18 | 2005-09-14 | 湖北工业大学 | Anti-seepage burnon casting paint made from alcohol base or aqueous sand powder |
| CN102371340A (en) * | 2011-10-10 | 2012-03-14 | 辛培兴 | Lost foam casting method for large casting |
| CN102430701A (en) * | 2011-11-29 | 2012-05-02 | 朱小英 | Coating for metal low pressure casting of magnesium alloy |
| CN105419552A (en) * | 2016-01-26 | 2016-03-23 | 云南凯琪消防科技有限公司 | Fire-resistant coating for steel structure and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865793A (en) * | 2017-12-04 | 2019-06-11 | 辽宁法库陶瓷工程技术研究中心 | Utilize cast iron light cast paint and the preparation method of polishing slag preparation |
| CN109865793B (en) * | 2017-12-04 | 2021-12-31 | 辽宁省轻工科学研究院有限公司 | Light-color cast coating for cast iron prepared from polishing waste residues and preparation method thereof |
| CN108580797A (en) * | 2018-05-29 | 2018-09-28 | 济南圣泉集团股份有限公司 | A kind of centrifugal casting chill coating and preparation method thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161207 |
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| RJ01 | Rejection of invention patent application after publication |