CN109848364A - A kind of compression casting boron nitride coating and preparation method thereof - Google Patents
A kind of compression casting boron nitride coating and preparation method thereof Download PDFInfo
- Publication number
- CN109848364A CN109848364A CN201811510196.3A CN201811510196A CN109848364A CN 109848364 A CN109848364 A CN 109848364A CN 201811510196 A CN201811510196 A CN 201811510196A CN 109848364 A CN109848364 A CN 109848364A
- Authority
- CN
- China
- Prior art keywords
- boron nitride
- reinforcing material
- compression casting
- preparation
- nitride coating
- 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.)
- Granted
Links
Abstract
The invention discloses a kind of compression casting boron nitride coatings and preparation method thereof, be prepared from the following raw materials in parts by weight: hexagonal boron nitride 20-50%, Aluminum sol 10-30%, reinforcing material 2-10%, sodium tripolyphosphate 0.5-2%, concave convex rod 1-5%, isooctanol 0.2-0.6%, surplus are softened water.Preparation method: sodium tripolyphosphate, Aluminum sol, concave convex rod and softened water are mixed into homogeneous solution, hexagonal boron nitride powder and reinforcing material are packed into ball mill, ball milling takes out after a certain period of time, it is gradually added into homogeneous solution, strong stirring is after a certain period of time, isooctanol is added, until there is no bubble generation.Coating of the present invention uses water-based system, and unharmful substance volatilization, environmental clean in use process.In addition, improving the hardness of coating as reinforcing material using silicon carbide and silicon nitride crystal whisker, preferably meeting the technical need in compression casting field, improve the ratio of briquetting of casting, reduce production cost.
Description
Technical field
The present invention relates to Metal and Alloy casting technology fields, and in particular to a kind of compression casting boron nitride coating.
Background technique
Due to the wetting action between metal bath (aluminium, copper, magnesium, zinc etc.) and mold, after the completion of casting, the residual of solidification
Metal liquid can together with casting mould strong bond, frequently resulted in when clearing up kish material mold surface layer fall off and
It destroys, reduces the service life of mold, improve the labor intensity of worker, increase the production time.On the other hand, it falls off
Mold little particle enters in metal bath, reduces the product quality of casting.
Formed punch lubricant etc..Existing metal hot forming generally uses water-based graphite or oil base graphite with release agent, produces
Dust or oil gas evaporation seriously pollute in journey, work under hard conditions, and forging itself is caused also to pollute, and need subsequent alkali cleaning or pickling
Or impeller blasting, it further pollutes the environment, needs systematically to be resolved.In Die Casting, to improve mould type
The service life of chamber, formed punch, and demould die casting smoothly, guarantees die casting any surface finish, and the complete clear wash rice of profile need to use one
A little auxiliary materials, as release agent,
Boron nitride coating has fabulous high temperature lubricating as a kind of inert inorganic high temperature resistant lubriation material, and chemical inertness is resistance to
Soda acid characteristic.It does not bond, not infiltrating molten metal liquid, can protect completely direct with molten aluminum, magnesium, copper, kirsite and slag
The refractory material of contact or pottery surface, greatly prolong the service life of such vessel, are applied to cast in recent years
Make field.
As patent of invention CN107201066A discloses a kind of anti-sticking aluminium paint.The coating can extend the use longevity of equipment
Life facilitates the cleaning work after the completion of casting, while the fine particle of refractory material being prevented to enter in aluminum melt, improves production
The cleanliness of product.Patent of invention CN103708843A is based on big granularity boron nitride powder and boron oxide, cold stage, boron oxide
Fusing forms high-viscosity melt, strengthens the adhesive force of boron nitride coating.The boron nitride work with higher of this reacted generation
Property, it can promote the sintering of boron nitride coating, coating percent of firing shrinkage is small, avoids being detached from matrix.We have also applied for one early period
Related patents (the application number: 201810761677.5) of the aqueous boron nitride coating of kind.But found in compression casting, no matter
It is that purchase or the homemade boron nitride coating in laboratory cannot all fully meet the technical need in compression casting field in the market, than
Such as have that service life is short, the low critical defect of ratio of briquetting.
Summary of the invention
For the status and problems of the prior art of boron nitride coating, the present invention provides a kind of compression casting nitrogen
Change boron dope.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of compression casting boron nitride coating, is prepared from the following raw materials in parts by weight: hexagonal boron nitride 20%-50%, aluminium are molten
Glue 10%-30%, reinforcing material 2%-10%, sodium tripolyphosphate 0.5%-2%, concave convex rod 1%-5%, isooctanol 0.2-0.6%, surplus are
Softened water.
The compression casting boron nitride coating, the hexagonal boron nitride be partial size 30.0 μm ~ 100.0 μm it
Between, purity is 95% or more.
The compression casting boron nitride coating, the reinforcing material are silicon carbide whisker, silicon nitride crystal whisker or carbon
SiClx whisker and silicon nitride crystal whisker it is compound.
The preparation method of the compression casting boron nitride coating, steps are as follows:
(1) sodium tripolyphosphate, Aluminum sol, concave convex rod and softened water are mixed into homogeneous solution by weight ratio；
(2) hexagonal boron nitride powder and reinforcing material are packed into ball mill by weight ratio, ball milling takes out after a certain period of time；
(3) hexagonal boron nitride powder and reinforcing material that take out in (2) are gradually added into the homogeneous solution prepared in (1), are stirred
After mixing uniformly, isooctanol is added, continues to stir, until there is no bubble generation；
Aforesaid operations are to carry out at room temperature.
Ratio of grinding media to material in the step (2) is 10:1, and Ball-milling Time is 30min ~ 120min.
Whisker refers to diameter in 0.1~2 μm, monocrystal staple fiber of the draw ratio L/D 10 or more.Due to the intensity of material
With defect number size existing for its inside and how many related.Monocrystal is smaller, and defect is fewer, and intensity is higher.General material
Material, intensity only have 1 percent or even one thousandth of theoretical strength, and exactly because of inside, there are various defects.And people's phase
Letter, for whisker since defect is few, intensity may be close to the theoretical strength of material.More commonly used crystal whisker materials have silicon carbide whisker
Palpus, alumina whisker, silicon nitride crystal whisker etc..In addition, silicon carbide whisker, alumina whisker, silicon nitride crystal whisker etc. just have itself
Preferable lubricity, and there is stable chemical performance, thermal coefficient are high, thermal expansion coefficient is small, wear-resisting property is good at high temperature etc.
Advantage.
Therefore, in above-mentioned compression casting boron nitride coating, reinforcing material can with the raising coating hardness of high degree,
Suitable additive amount can reduce the release agent loss generated by pressure in the case where not improving its coefficient of friction, reduce demoulding
The spraying number of agent reduces production cost.
In addition, in above-mentioned coating big partial size hexagonal boron nitride use, can overcome under high temperature that raw material heat is swollen in coating
Phenomena such as swollen coefficient mismatches bring cracking, falls off.From the point of view of bridge formation viewpoint, the mixing of the boron nitride particles of different-grain diameter can be with
Make coating formed relatively closely accumulation, advantageously form the better surface of greasy property, meanwhile, reinforcing material can effectively into
Enter in big particle gap, contacts with each other between particle and a little sharply increase, form accumulation more closely inside coating, improve painting
Expect the hardness on surface.
Beneficial effects of the present invention: compared with existing boron nitride coating technology, the present invention using whisker as reinforcing material,
It is pollution-free in guaranteeing use process, it is environmental clean, while possessing good high temperature lubrication property, and greatly increase coating
Surface hardness, especially suitable for compression casting field.In addition, the coating is also able to maintain longer use under high-pressure casting state
Service life reduces the spraying number of coating, saves labour, improves production efficiency, reduces production cost.
Specific embodiment
Combined with specific embodiments below, the present invention will be further described.It should be understood that following embodiment is merely to illustrate this
The person skilled in the art of the range of invention and is not intended to limit the present invention, the field can make one according to the content of foregoing invention
A little nonessential modifications and adaptations.
Embodiment 1
The compression casting boron nitride coating of the present embodiment, is prepared from the following raw materials in parts by weight: hexagonal boron nitride 20%, aluminium
Colloidal sol 10%, silicon carbide whisker 2%, sodium tripolyphosphate 0.5%, concave convex rod 5%, isooctanol 0.2%, surplus are softened water.
The compression casting boron nitride coating of the present embodiment the preparation method is as follows:
(1) sodium tripolyphosphate, Aluminum sol, concave convex rod and softened water are mixed into homogeneous solution by weight ratio；
(2) hexagonal boron nitride powder and reinforcing material are packed into ball mill, are taken out after ratio of grinding media to material 10:1, ball milling 30min；
(3) hexagonal boron nitride powder and reinforcing material that take out in (2) are gradually added into the solution prepared in (1), stirring is equal
Even addition isooctanol, continues to stir, until not having bubble generation.
Embodiment 2
The compression casting boron nitride coating of the present embodiment, is prepared from the following raw materials in parts by weight: hexagonal boron nitride 40%, aluminium
Colloidal sol 20%, boron nitride crystal whisker 5%, sodium tripolyphosphate 1%, concave convex rod 3%, isooctanol 0.5%, surplus are softened water.
The compression casting boron nitride coating of the present embodiment the preparation method is as follows:
(1) sodium tripolyphosphate, Aluminum sol, concave convex rod and softened water are mixed into homogeneous solution by weight ratio；
(2) a certain amount of hexagonal boron nitride powder and reinforcing material are packed into ball mill, are taken after ratio of grinding media to material 10:1, ball milling 60min
Out；
(3) hexagonal boron nitride powder and reinforcing material that take out in (2) are gradually added into the solution prepared in (1), stirring is equal
Even addition isooctanol, continues to stir, until not having bubble generation.
Embodiment 3
The compression casting boron nitride coating of the present embodiment, is prepared from the following raw materials in parts by weight: hexagonal boron nitride 50%, aluminium
Colloidal sol 30%, silicon carbide and silicon nitride is compound 10%, sodium tripolyphosphate 2%, concave convex rod 1%, isooctanol 0.6%, surplus is softened water.
The compression casting boron nitride coating of the present embodiment the preparation method is as follows:
(1) sodium tripolyphosphate, Aluminum sol, concave convex rod and softened water are mixed into homogeneous solution by weight ratio；
(2) a certain amount of hexagonal boron nitride powder and reinforcing material are packed into ball mill, are taken after ratio of grinding media to material 10:1, ball milling 120min
Out；
(3) hexagonal boron nitride powder and reinforcing material that take out in (2) are gradually added into the solution prepared in (1), stirring is equal
Even addition isooctanol, continues to stir, until not having bubble generation.
As a comparison, reinforcing material is not added under the premise of other components content is constant according to above-mentioned preparation method,
Comparative example 1, comparative example 2, comparative example 3 that reinforcing material is not added have been obtained, embodiment 1, embodiment 2, embodiment 3 are respectively corresponded
Preparation method.
The boron nitride coating that above-mentioned 3 embodiments and 3 comparative examples obtain is sprayed on die casting, high-temperature process
Afterwards, comparative test, specific Experimental comparison results have been carried out to its surface covering coefficient of friction, coating hardness, casting ratio of briquetting
As shown in the table.
The result shows that: under same experimental conditions, in embodiment obtained boron nitride coating have preferable hardness and
Higher casting ratio of briquetting, and its coefficient of friction does not increase significantly.
Basic principles and main features and advantages of the present invention of the invention have been shown and described above.The skill of the industry
Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent thereof.
Claims (5)
1. a kind of compression casting boron nitride coating, it is characterised in that be prepared from the following raw materials in parts by weight: hexagonal boron nitride
20%-50%, Aluminum sol 10%-30%, reinforcing material 2%-10%, sodium tripolyphosphate 0.5%-2%, concave convex rod 1%-5%, isooctanol
0.2-0.6%, surplus are softened water.
2. compression casting boron nitride coating according to claim 1, it is characterised in that: the hexagonal boron nitride is grain
Diameter is between 30.0 μm ~ 100.0 μm, and purity is 95% or more.
3. compression casting boron nitride coating according to claim 1, it is characterised in that: the reinforcing material is silicon carbide
Whisker, silicon nitride crystal whisker or silicon carbide whisker and silicon nitride crystal whisker it is compound.
4. the preparation method of compression casting boron nitride coating according to claim 1 to 3, it is characterised in that step
It is as follows:
(1) sodium tripolyphosphate, Aluminum sol, concave convex rod and softened water are mixed into homogeneous solution by weight ratio；
(2) hexagonal boron nitride powder and reinforcing material are packed into ball mill by weight ratio, ball milling takes out after a certain period of time；
(3) hexagonal boron nitride powder and reinforcing material that take out in (2) are gradually added into the homogeneous solution prepared in (1), are stirred
After mixing uniformly, isooctanol is added, continues to stir, until there is no bubble generation；
Aforesaid operations are to carry out at room temperature.
5. the preparation method of compression casting boron nitride coating according to claim 4, it is characterised in that: the step
(2) ratio of grinding media to material in is 10:1, and Ball-milling Time is 30min ~ 120min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811510196.3A CN109848364B (en) | 2018-12-11 | 2018-12-11 | Boron nitride coating for pressure casting and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811510196.3A CN109848364B (en) | 2018-12-11 | 2018-12-11 | Boron nitride coating for pressure casting and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109848364A true CN109848364A (en) | 2019-06-07 |
| CN109848364B CN109848364B (en) | 2020-09-18 |
Family
ID=66891125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811510196.3A Active CN109848364B (en) | 2018-12-11 | 2018-12-11 | Boron nitride coating for pressure casting and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109848364B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111019408A (en) * | 2019-12-17 | 2020-04-17 | 大连新翔工业材料有限公司 | Anti-sticking aluminum coating |
| CN111590017A (en) * | 2020-05-26 | 2020-08-28 | 陕西宝塔山油漆股份有限公司 | Self-lubricating non-stick aluminum-melting environment-friendly coating and film and preparation method thereof |
| CN111702124A (en) * | 2020-05-26 | 2020-09-25 | 襄阳聚力新材料科技有限公司 | High-strength high-toughness cast steel lost foam coating and preparation method thereof |
| CN112552720A (en) * | 2020-12-08 | 2021-03-26 | 江苏常铝铝业集团股份有限公司 | Refractory material coating for resisting aluminum alloy melt corrosion and preparation and coating methods thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101133004A (en) * | 2004-12-31 | 2008-02-27 | 万肯高级材料有限公司 | Coating system |
| CN102533423A (en) * | 2011-12-02 | 2012-07-04 | 华中科技大学 | Non-graphite type lubricant for hot die forging of metal and preparation method of non-graphite type lubricant |
| CN104646605A (en) * | 2015-03-05 | 2015-05-27 | 苏州宇希新材料科技有限公司 | Coating for cast aluminum alloy |
| CN105750481A (en) * | 2016-03-31 | 2016-07-13 | 宁夏共享化工有限公司 | Water-based paint preventing large steel casting orange peel defect |
| CN106010763A (en) * | 2016-06-14 | 2016-10-12 | 山东南山铝业股份有限公司 | Hot-forging lubricating agent and preparation method and application thereof |
| CN107141863A (en) * | 2017-05-16 | 2017-09-08 | 江南大学 | A kind of high-intensity corrosion coating and preparation method and application |
| CN107201066A (en) * | 2017-07-28 | 2017-09-26 | 宋振亚 | A kind of anti-sticking aluminium paint |
| CN107243594A (en) * | 2017-06-14 | 2017-10-13 | 合肥市旺友门窗有限公司 | A kind of used in aluminium alloy casting insulating refractory coating and preparation method thereof |
| CN108699705A (en) * | 2015-12-29 | 2018-10-23 | 莫门蒂夫性能材料股份有限公司 | Boron nitride coating and its application method for intermetallic composite coating |
-
2018
- 2018-12-11 CN CN201811510196.3A patent/CN109848364B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101133004A (en) * | 2004-12-31 | 2008-02-27 | 万肯高级材料有限公司 | Coating system |
| CN102533423A (en) * | 2011-12-02 | 2012-07-04 | 华中科技大学 | Non-graphite type lubricant for hot die forging of metal and preparation method of non-graphite type lubricant |
| CN104646605A (en) * | 2015-03-05 | 2015-05-27 | 苏州宇希新材料科技有限公司 | Coating for cast aluminum alloy |
| CN108699705A (en) * | 2015-12-29 | 2018-10-23 | 莫门蒂夫性能材料股份有限公司 | Boron nitride coating and its application method for intermetallic composite coating |
| CN105750481A (en) * | 2016-03-31 | 2016-07-13 | 宁夏共享化工有限公司 | Water-based paint preventing large steel casting orange peel defect |
| CN106010763A (en) * | 2016-06-14 | 2016-10-12 | 山东南山铝业股份有限公司 | Hot-forging lubricating agent and preparation method and application thereof |
| CN107141863A (en) * | 2017-05-16 | 2017-09-08 | 江南大学 | A kind of high-intensity corrosion coating and preparation method and application |
| CN107243594A (en) * | 2017-06-14 | 2017-10-13 | 合肥市旺友门窗有限公司 | A kind of used in aluminium alloy casting insulating refractory coating and preparation method thereof |
| CN107201066A (en) * | 2017-07-28 | 2017-09-26 | 宋振亚 | A kind of anti-sticking aluminium paint |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111019408A (en) * | 2019-12-17 | 2020-04-17 | 大连新翔工业材料有限公司 | Anti-sticking aluminum coating |
| CN111590017A (en) * | 2020-05-26 | 2020-08-28 | 陕西宝塔山油漆股份有限公司 | Self-lubricating non-stick aluminum-melting environment-friendly coating and film and preparation method thereof |
| CN111702124A (en) * | 2020-05-26 | 2020-09-25 | 襄阳聚力新材料科技有限公司 | High-strength high-toughness cast steel lost foam coating and preparation method thereof |
| CN112552720A (en) * | 2020-12-08 | 2021-03-26 | 江苏常铝铝业集团股份有限公司 | Refractory material coating for resisting aluminum alloy melt corrosion and preparation and coating methods thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109848364B (en) | 2020-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109848364A (en) | A kind of compression casting boron nitride coating and preparation method thereof | |
| CN108788002B (en) | Heat-resistant aluminum alloy die-casting release agent and preparation method and use method thereof | |
| CN102040386B (en) | Torpedo can spouting material and spouting method thereof | |
| CN108838318B (en) | High-temperature-resistant casting mold release agent and preparation method and use method thereof | |
| CN108178645B (en) | Non-stick aluminum castable | |
| CN109021628A (en) | It is a kind of can low temperature bonding applied at elevated temperature aqueous boron nitride coating | |
| EP1839773B1 (en) | Heat-resistant material for low-melting metal casting machine | |
| CN114836713A (en) | Zn-Al-Cr-Bi multi-element powder co-permeation agent and application thereof | |
| CN109705963B (en) | Composite high-stability lubricant and preparation process thereof | |
| CN108788003B (en) | Powdery mold release agent and preparation method and use method thereof | |
| CN108907074B (en) | Anti-oxidation release agent and preparation method and use method thereof | |
| CN103317114A (en) | Metal-mold precision casting method for zirconium and zirconium alloy | |
| CN101735879B (en) | Titanium alloy extrusion lubricant, preparation and use methods thereof | |
| CN108971477B (en) | Lining material for continuous casting ladle long nozzle | |
| CN111362677A (en) | Environment-friendly chromium-free air brick and preparation method thereof | |
| CN109897408A (en) | A kind of durable coating for glass-forming die demoulding | |
| CN110479989B (en) | Processing method of high-temperature-resistant titanium alloy casting | |
| CN111590017B (en) | Self-lubricating non-stick aluminum-melting environment-friendly coating and film and preparation method thereof | |
| CN113564404A (en) | Aluminum-based graphite particle reinforced composite material and method and heat dissipation adaptor | |
| CN114276864A (en) | Water-based stainless steel fastener anti-seizure agent and preparation method thereof | |
| CN113999030A (en) | Low-temperature curing wear-resistant spray coating for blast furnace granulation tower and preparation method thereof | |
| KR101156399B1 (en) | Surface lubrication treatment material for hot and constant temperature pozing process | |
| CN108191441B (en) | Aluminum nitride reinforced castable for chute upright post of dry quenching furnace and preparation method thereof | |
| CN111375744A (en) | Method for compounding metal liquid and silicon carbide | |
| CN114645306B (en) | Method for preparing large-size cBN particle nickel-based coating on surface of complex-shaped workpiece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |