CN112480726A - Centrifugal composite high-speed steel roll end surface heat treatment coating - Google Patents
Centrifugal composite high-speed steel roll end surface heat treatment coating Download PDFInfo
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- CN112480726A CN112480726A CN202011594292.8A CN202011594292A CN112480726A CN 112480726 A CN112480726 A CN 112480726A CN 202011594292 A CN202011594292 A CN 202011594292A CN 112480726 A CN112480726 A CN 112480726A
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- hydroxyapatite
- heat treatment
- speed steel
- steel roll
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention relates to a heat treatment coating, in particular to a centrifugal composite high-speed steel roll end face heat treatment coating which is prepared from the following raw materials in percentage by mass: 50-65% of hydroxyapatite/titanium composite powder; 8.3 to 9.3 percent of acrylic acid additive of perfluoroalkyl; 7.5% -7.9% of graphene oxide; 5.4 to 6.1 percent of nano silicon dioxide; 11.3 to 15.7 percent of adhesive; 3.1 to 5.1 percent of organosilicon modified styrene-acrylic emulsion; the balance of water. The invention can be coated on the combined layer of the end faces of the support shoulder and the roll neck, thereby realizing the protection of the end faces in the differential temperature treatment stage of the composite high-speed steel roll, avoiding the cracks caused by the reduction of the strength of the combined layer due to overhigh temperature and reducing the rejection rate.
Description
Technical Field
The invention relates to a heat treatment coating, in particular to a centrifugal composite high-speed steel roll end face heat treatment coating.
Background
In order to improve the service performance of the centrifugal composite high-speed steel roll, the high-speed steel working layer structure needs to be improved through high-temperature heat treatment, and meanwhile, in order to avoid the performance reduction of the ductile iron core, differential temperature heat treatment is generally adopted for quenching.
During differential temperature heat treatment, the bonding layer interface at the supporting shoulder and the roll neck is heated to the quenching temperature of the high-speed steel working layer, and the strength of the bonding layer interface is greatly damaged at the temperature, so that cracks are easily formed after cooling, and the bonding layer interface expands inwards after reheating, or expands to the roll body to cause insufficient length and size to form waste products.
Disclosure of Invention
In order to solve the problems, the invention provides a centrifugal composite high-speed steel roll end face heat treatment coating which can be coated on a combined layer of a support shoulder and a roll neck end face, so that the end face is protected in a differential temperature treatment stage of a composite high-speed steel roll, cracks caused by strength reduction of the combined layer due to overhigh temperature are avoided, and the rejection rate is reduced.
In order to achieve the purpose, the invention adopts the technical scheme that:
a centrifugal composite high-speed steel roll end surface heat treatment coating is prepared from hydroxyapatite/titanium composite powder, perfluoroalkyl acrylic acid additives, graphene oxide, nano silicon dioxide, an adhesive, an organic silicon modified styrene-acrylic emulsion and water.
Further, the material is prepared from the following raw materials in percentage by mass:
50-65% of hydroxyapatite/titanium composite powder; 8.3 to 9.3 percent of acrylic acid additive of perfluoroalkyl; 7.5% -7.9% of graphene oxide; 5.4 to 6.1 percent of nano silicon dioxide; 11.3 to 15.7 percent of adhesive; 3.1 to 5.1 percent of organosilicon modified styrene-acrylic emulsion; the balance of water.
Preferably, the material is prepared from the following raw materials in percentage by mass:
55-60% of hydroxyapatite/titanium composite powder; 8.3 to 9 percent of acrylic acid additive of perfluoroalkyl; 7.5% -7.9% of graphene oxide solution; 5.4 to 6.1 percent of nano silicon dioxide; 11.3 to 15.7 percent of adhesive; 3.1 to 4.1 percent of organosilicon modified styrene-acrylic emulsion; the balance of water.
Furthermore, the adhesive is a composite phosphate adhesive.
Further, the hydroxyapatite/titanium composite powder is prepared by mechanically ball-milling the nanostructured hydroxyapatite and titanium powder under the protection of inert gas (pure argon), wherein the content of the hydroxyapatite is between 40vol.% and 60vol.%, the particle size of the hydroxyapatite is between 10 nm and 20nm, and the particle size of the titanium particles is between 20nm and 40 nm.
The coating has excellent high temperature resistance, crack resistance and heat insulation performance, and can be coated on a bonding layer between the shoulder support and the end face of the roll neck in a brush way, so that the end face is protected in the differential temperature treatment stage of the composite high-speed steel roll, cracks caused by the reduction of the strength of the bonding layer due to overhigh temperature are avoided, and the rejection rate is reduced.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
55% of hydroxyapatite/titanium composite powder; 8.3 percent of acrylic additive of perfluoroalkyl; 7.5% of graphene oxide; 5.4 percent of nano silicon dioxide; 11.3 percent of composite phosphate adhesive; 3.1 percent of organosilicon modified styrene-acrylic emulsion; the balance of water.
When the preparation method is used, the nano silicon dioxide is dispersed in water through ultrasonic oscillation equipment to form nano silicon dioxide dispersion liquid, and then the nano silicon dioxide dispersion liquid is mixed with hydroxyapatite/titanium composite powder, perfluoroalkyl acrylic additives, graphene oxide solution, composite phosphate adhesives and organic silicon modified styrene-acrylic emulsion, and the nano silicon dioxide/acrylic emulsion is obtained after uniform stirring.
In this embodiment, the hydroxyapatite/titanium composite powder is prepared by mechanically ball-milling nanostructured hydroxyapatite and titanium powder under the protection of inert gas (pure argon), wherein the hydroxyapatite/titanium composite powder has a hydroxyapatite content of 40vol.% to 60vol.%, the particle size of the hydroxyapatite is 10 to 20nm, and the particle size of the titanium particles is 20 to 40 nm.
Example 2
The centrifugal composite high-speed steel roll end surface heat treatment coating is prepared from the following raw materials in percentage by mass:
60% of hydroxyapatite/titanium composite powder; 9% of perfluoroalkyl acrylic additive; 7.9% of graphene oxide; 6.1% of nano silicon dioxide; 11.5 percent of composite phosphate adhesive; 4.1 percent of organosilicon modified styrene-acrylic emulsion; the balance of water.
When the preparation method is used, the nano silicon dioxide is dispersed in water through ultrasonic oscillation equipment to form nano silicon dioxide dispersion liquid, and then the nano silicon dioxide dispersion liquid is mixed with hydroxyapatite/titanium composite powder, perfluoroalkyl acrylic additives, graphene oxide solution, composite phosphate adhesives and organic silicon modified styrene-acrylic emulsion, and the nano silicon dioxide/acrylic emulsion is obtained after uniform stirring.
In this embodiment, the hydroxyapatite/titanium composite powder is prepared by mechanically ball-milling nanostructured hydroxyapatite and titanium powder under the protection of inert gas (pure argon), wherein the hydroxyapatite/titanium composite powder has a hydroxyapatite content of 40vol.% to 60vol.%, the particle size of the hydroxyapatite is 10 to 20nm, and the particle size of the titanium particles is 20 to 40 nm.
Example 3
The centrifugal composite high-speed steel roll end surface heat treatment coating is prepared from the following raw materials in percentage by mass:
57.5 percent of hydroxyapatite/titanium composite powder; 8.8 percent of acrylic additive of perfluoroalkyl; 7.7% of graphene oxide; 5.75 percent of nano silicon dioxide; 13.5 percent of composite phosphate adhesive; 3.6 percent of organosilicon modified styrene-acrylic emulsion; the balance of water.
When the preparation method is used, the nano silicon dioxide is dispersed in water through ultrasonic oscillation equipment to form nano silicon dioxide dispersion liquid, and then the nano silicon dioxide dispersion liquid is mixed with hydroxyapatite/titanium composite powder, perfluoroalkyl acrylic additives, graphene oxide solution, composite phosphate adhesives and organic silicon modified styrene-acrylic emulsion, and the nano silicon dioxide/acrylic emulsion is obtained after uniform stirring.
In this embodiment, the hydroxyapatite/titanium composite powder is prepared by mechanically ball-milling nanostructured hydroxyapatite and titanium powder under the protection of inert gas (pure argon), wherein the hydroxyapatite/titanium composite powder has a hydroxyapatite content of 40vol.% to 60vol.%, the particle size of the hydroxyapatite is 10 to 20nm, and the particle size of the titanium particles is 20 to 40 nm.
When the roller is used in the concrete, firstly, the end faces of the support shoulder and the roller neck are processed, so that the roughness of the end faces meets the requirement; cleaning the end face, and brushing heat treatment coating with a certain thickness on the end face after cleaning; ) Drying for a certain time after finishing coating, and then putting the roller into a preheating furnace for preheating; and finally, transferring the preheated roller to a differential temperature furnace for quenching, knocking the end face when discharging from the furnace after quenching is finished, and removing the sintered coating.
The coating disclosed by the invention can protect the end face of the composite high-speed steel roller in the differential temperature treatment stage, avoids cracks caused by the reduction of the strength of a bonding layer due to overhigh temperature, reduces the rejection rate, and can reduce the rejection rate by about 83.7% compared with differential temperature treatment without adopting the coating.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (5)
1. The centrifugal composite high-speed steel roll end surface heat treatment coating is characterized by comprising the following components in parts by weight: the material is prepared from hydroxyapatite/titanium composite powder, perfluoroalkyl acrylic acid additive, graphene oxide, nano silicon dioxide, adhesive, organosilicon modified styrene-acrylic emulsion and water.
2. The centrifugal composite high-speed steel roll end surface heat treatment coating as claimed in claim 1, characterized in that: the material is prepared from the following raw materials in percentage by mass:
50-65% of hydroxyapatite/titanium composite powder; 8.3 to 9.3 percent of acrylic acid additive of perfluoroalkyl; 7.5% -7.9% of graphene oxide; 5.4 to 6.1 percent of nano silicon dioxide; 11.3 to 15.7 percent of adhesive; 3.1 to 5.1 percent of organosilicon modified styrene-acrylic emulsion; the balance of water.
3. The centrifugal composite high-speed steel roll end surface heat treatment coating as claimed in claim 1, characterized in that: the material is prepared from the following raw materials in percentage by mass:
55-60% of hydroxyapatite/titanium composite powder; 8.3 to 9 percent of acrylic acid additive of perfluoroalkyl; 7.5% -7.9% of graphene oxide solution; 5.4 to 6.1 percent of nano silicon dioxide; 11.3 to 15.7 percent of adhesive; 3.1 to 4.1 percent of organosilicon modified styrene-acrylic emulsion; the balance of water.
4. The centrifugal composite high-speed steel roll end surface heat treatment coating as claimed in any one of claims 1 to 3, characterized in that: the adhesive is a composite phosphate adhesive.
5. The centrifugal composite high-speed steel roll end surface heat treatment coating as claimed in any one of claims 1 to 3, characterized in that: the hydroxyapatite/titanium composite powder is prepared from nano-structure hydroxyapatite and titanium powder through mechanical ball milling under the protection of inert gas, wherein the content of the hydroxyapatite is 40-60 vol.%, the particle size of the hydroxyapatite is 10-20 nm, and the particle size of the titanium particles is 20-40 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011594292.8A CN112480726B (en) | 2020-12-29 | 2020-12-29 | Centrifugal composite high-speed steel roll end surface heat treatment coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011594292.8A CN112480726B (en) | 2020-12-29 | 2020-12-29 | Centrifugal composite high-speed steel roll end surface heat treatment coating |
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| CN112480726A true CN112480726A (en) | 2021-03-12 |
| CN112480726B CN112480726B (en) | 2022-02-01 |
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| CN202011594292.8A Active CN112480726B (en) | 2020-12-29 | 2020-12-29 | Centrifugal composite high-speed steel roll end surface heat treatment coating |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160355688A1 (en) * | 2013-03-14 | 2016-12-08 | W. L. Gore & Associates, Inc. | Coating For A Surface |
| CN106398331A (en) * | 2016-08-31 | 2017-02-15 | 中钢集团邢台机械轧辊有限公司 | Centrifugal compound high-speed steel roller end surface thermal treatment coating, and preparation method and application method thereof |
| CN109321863A (en) * | 2018-11-22 | 2019-02-12 | 九江学院 | A kind of nanostructured hydroxyapatite/titanium compound coating and preparation method thereof |
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2020
- 2020-12-29 CN CN202011594292.8A patent/CN112480726B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160355688A1 (en) * | 2013-03-14 | 2016-12-08 | W. L. Gore & Associates, Inc. | Coating For A Surface |
| CN106398331A (en) * | 2016-08-31 | 2017-02-15 | 中钢集团邢台机械轧辊有限公司 | Centrifugal compound high-speed steel roller end surface thermal treatment coating, and preparation method and application method thereof |
| CN109321863A (en) * | 2018-11-22 | 2019-02-12 | 九江学院 | A kind of nanostructured hydroxyapatite/titanium compound coating and preparation method thereof |
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| CN112480726B (en) | 2022-02-01 |
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