CN112593181A - Preparation method of AT powder for plasma spraying - Google Patents
Preparation method of AT powder for plasma spraying Download PDFInfo
- Publication number
- CN112593181A CN112593181A CN202011331998.5A CN202011331998A CN112593181A CN 112593181 A CN112593181 A CN 112593181A CN 202011331998 A CN202011331998 A CN 202011331998A CN 112593181 A CN112593181 A CN 112593181A
- Authority
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- powder
- parts
- plasma spraying
- crusher
- titanium slag
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- 239000000843 powder Substances 0.000 title claims abstract description 54
- 238000007750 plasma spraying Methods 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002893 slag Substances 0.000 claims abstract description 21
- 239000010936 titanium Substances 0.000 claims abstract description 21
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 19
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 18
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000010431 corundum Substances 0.000 claims abstract description 14
- 239000002131 composite material Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 238000010891 electric arc Methods 0.000 claims abstract description 7
- 230000004927 fusion Effects 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- 239000006148 magnetic separator Substances 0.000 claims abstract description 7
- 238000010902 jet-milling Methods 0.000 claims abstract description 3
- 238000003801 milling Methods 0.000 claims abstract description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 29
- 238000000576 coating method Methods 0.000 abstract description 30
- 239000011248 coating agent Substances 0.000 abstract description 28
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 10
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical compound [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 8
- 238000005507 spraying Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 229910000975 Carbon steel Inorganic materials 0.000 description 4
- 239000010962 carbon steel Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000007751 thermal spraying Methods 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 238000010309 melting process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
Abstract
The invention discloses a preparation method of AT powder for plasma spraying, which comprises the following components in parts by weight: 30-400 parts of high titanium slag and 600-970 parts of brown fused alumina, and comprises the following steps: s1, putting the brown corundum and the high titanium slag into a mixer at room temperature, and mixing for 30-300 minutes; s2, putting the mixed raw materials into an electric arc furnace, and electrifying to completely melt the raw materials; s3, crushing the cooled fusion cakes into particles of 1-3mm by using a crusher; s4, feeding the crushed particles into jet milling and grading, and milling and grading to obtain powder with a particle size suitable for plasma spraying; and S5, removing free iron carried by the crusher in the powder by using a magnetic separator to obtain finished powder. The composite powder prepared by the method has low production cost, good product quality and large production capacity, and the prepared composite coating has good weather resistance, high bonding strength and compact coating, thereby laying a foundation for the application of plasma spraying in a wider range.
Description
Technical Field
The invention belongs to the field of thermal spraying technology and material processing, and particularly relates to a preparation method of AT powder for plasma spraying.
Background
With the further development of modern industrial technology, the performance and functional requirements of materials are facing increasingly stringent challenges. The surface of the material is used as an important carrier of the performance and the function of the material, and the modification and protection of the surface by utilizing the thermal spraying technology becomes a key development direction which is concerned by people in the field of equipment manufacturing at present. In the face of increasingly complex wear-resistant and corrosion-resistant working conditions, a single metal or ceramic thermal spraying coating cannot meet the requirements. The plasma spraying Al2O3 & 3% TiO2(AT3), Al2O3 & 13% TiO2(AT13), Al2O3 & 20% TiO2(AT20), Al2O3 & 40% TiO2(AT40) composite powder can prepare extremely wear-resistant ceramic coatings, and can be used for pump lining sealing sleeves, pump shafts and other rotating parts in the sealing sleeves. This coating does not require elaborate spray techniques as many other ceramic powders do, i.e., a homogeneous, high hardness coating can be sprayed. The coating has the performance of the alumina and titanium dioxide coating, but is denser, harder and stronger than the alumina and titanium dioxide coating, and has good inter-particle bonding force with a base material. These coatings have excellent wear resistance to abrasive particles, corrosion resistance and temperature resistance of about 540 ℃. They have very good bonding properties, very low porosity and excellent grinding finish. In cases where thermal shock resistance is not a primary consideration, it is contemplated to be used as a high temperature resistant coating, and as a corrosion resistant, oxidation resistant coating. These materials are used for abrasion-resistant coatings on yarn-contacting parts of textile machines in the textile industry and give the yarn a certain amount of "fuzz".
AT powder is plasma spraying powder with the largest dosage, and the current mainstream production process is to produce sintered alumina and titanium dioxide (containing about 93 percent of titanium oxide) as raw materials by adopting an electric melting crushing method, so that the raw materials have higher cost and uneven components.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a preparation method of AT powder for plasma spraying.
In order to achieve the purpose, the invention provides the following technical scheme: the preparation method of the AT powder for plasma spraying comprises the following components in parts by weight: 30-400 parts of high titanium slag and 600-970 parts of brown fused alumina, and comprises the following steps:
s1, putting the brown corundum and the high titanium slag into a mixer at room temperature, and mixing for 30-300 minutes;
s2, putting the mixed raw materials into an electric arc furnace, and electrifying to completely melt the raw materials;
s3, crushing the cooled fusion cakes into particles of 1-3mm by using a crusher;
s4, feeding the crushed particles into jet milling and grading, and milling and grading to obtain powder with a particle size suitable for plasma spraying;
and S5, removing free iron carried by the crusher in the powder by using a magnetic separator to obtain finished powder.
Preferably, the granularity of the brown corundum is 0.2-3mm, and the granularity of the high titanium slag is 0.2-3 mm.
Preferably, the crusher in S3 is one of a jaw crusher, a hammer crusher or a universal crusher.
Preferably, the alumina titanium oxide composite powder consists of the following components in parts: brown corundum 970 parts and high titanium slag 30 parts.
Preferably, the alumina titanium oxide composite powder consists of the following components in parts: 800 parts of brown corundum and 200 parts of high titanium slag.
Preferably, the alumina titanium oxide composite powder consists of the following components in parts: 600 parts of brown corundum and 400 parts of high titanium slag.
The invention has the technical effects and advantages that: according to the preparation method of the AT powder for plasma spraying, provided by the invention, the powder preparation cost is greatly reduced, the coating cost is reduced, the industrial popularization is facilitated, the flying problem in the electric melting process is obviously improved by using raw materials with thicker granularity, the mixing homogenization of the materials is easier to realize, and the powder components are easy to control; the composite powder prepared by the method has low production cost, good product quality and large production capacity, and the prepared composite coating has good weather resistance, high bonding strength and compact coating, thereby laying a foundation for the application of plasma spraying in a wider range.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The preparation method of the AT powder for plasma spraying comprises the following components in parts by weight: 30-400 parts of high titanium slag and 600-970 parts of brown fused alumina, wherein the high titanium slag comprises Al2O 3.3% TiO2(AT3), Al2O 3.13% TiO2(AT13), Al2O 3.20% TiO2(AT20), Al2O 3.40% TiO2(AT40) powder.
Example 1:
1) 970 kilograms of brown fused alumina with the granularity of 0.2-2mm and 30 kilograms of superfine high titanium slag with the granularity of 0.2-2mm are weighed and put into a mixer for mechanical mixing for 60 minutes;
2) putting the mixed raw materials into an electric arc furnace, and electrifying to completely melt the raw materials;
3) crushing the cooled fusion cake into particles of 1-3mm by a hammer crusher;
4) feeding the crushed particles into airflow crushing and grading, crushing and grading to obtain 15-45 mu m powder; 5) removing free iron carried by the crusher from the powder by a magnetic separator to obtain the finished AT3 powder.
The product of the invention is used for plasma spraying, certain current, voltage, main gas flow, auxiliary gas flow, feeding speed and spraying distance are adopted for spraying on carbon steel, the surface of the prepared coating has no cracks, and performance tests show that the microhardness of the coating is within the range of 1000-1100, and the coating has good bonding strength with a matrix and corrosion resistance.
Example 2:
1) 970 kilograms of brown fused alumina with the granularity of 0.2-2mm and 30 kilograms of superfine high titanium slag with the granularity of 0.2-2mm are weighed and put into a mixer for mechanical mixing for 120 minutes;
2) putting the mixed raw materials into an electric arc furnace, and electrifying to completely melt the raw materials;
3) crushing the cooled fusion cake into particles of 1-3mm by a hammer crusher;
4) feeding the crushed particles into airflow crushing and grading, crushing and grading to obtain 15-45 mu m powder;
5) removing free iron carried by the crusher from the powder by a magnetic separator to obtain the finished AT13 powder.
The product of the invention is used for plasma spraying, certain current, voltage, main gas flow, auxiliary gas flow, feeding speed and spraying distance are adopted for spraying on carbon steel, the surface of the prepared coating has no cracks, and performance tests show that the microhardness of the coating is in the range of 900-1000, and the coating has good bonding strength with a matrix and corrosion resistance.
Example 3:
1) weighing 800 kg of brown corundum with the granularity of 0.2-2mm and 200 kg of superfine high titanium slag with the granularity of 0.2-2mm, putting the brown corundum and the high titanium slag into a mixer, and mechanically mixing for 180 minutes;
2) putting the mixed raw materials into an electric arc furnace, and electrifying to completely melt the raw materials;
3) crushing the cooled fusion cake into particles of 1-3mm by a hammer crusher;
4) feeding the crushed particles into airflow crushing and grading, crushing and grading to obtain 20-45 mu m powder;
5) removing free iron carried by the crusher from the powder by a magnetic separator to obtain the finished AT20 powder.
The product of the invention is used for plasma spraying, certain current, voltage, main gas flow, auxiliary gas flow, feeding speed and spraying distance are adopted for spraying on carbon steel, the surface of the prepared coating has no cracks, and performance tests show that the microhardness of the coating is in the range of 800-900, and the coating has good bonding strength with a matrix and corrosion resistance.
Example 4:
1) weighing 600 kg of brown corundum with the granularity of 0.2-2mm and 400 kg of superfine high titanium slag with the granularity of 0.2-2mm, putting the weighed materials into a mixer, and mechanically mixing the materials for 300 minutes;
2) putting the mixed raw materials into an electric arc furnace, and electrifying to completely melt the raw materials;
3) crushing the cooled fusion cake into particles of 1-3mm by a hammer crusher;
4) feeding the crushed particles into airflow crushing and grading, crushing and grading to obtain 22-53 mu m powder;
5) removing free iron carried by the crusher from the powder by a magnetic separator to obtain the finished AT40 powder.
The product of the invention is used for plasma spraying, certain current, voltage, main gas flow, auxiliary gas flow, feeding speed and spraying distance are adopted for spraying on carbon steel, the surface of the prepared coating has no cracks, and performance tests show that the microhardness of the coating is in the range of 650-750, and the coating has good bonding strength with a matrix and corrosion resistance.
In summary, the following steps: according to the preparation method of the AT powder for plasma spraying, provided by the invention, the powder preparation cost is greatly reduced, the coating cost is reduced, the industrial popularization is facilitated, the flying problem in the electric melting process is obviously improved by using raw materials with thicker granularity, the mixing homogenization of the materials is easier to realize, and the powder components are easy to control; the composite powder prepared by the method has low production cost, good product quality and large production capacity, and the prepared composite coating has good weather resistance, high bonding strength and compact coating, thereby laying a foundation for the application of plasma spraying in a wider range.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The preparation method of the AT powder for plasma spraying comprises the following components in parts by weight: 30-400 parts of high titanium slag and 600-970 parts of brown fused alumina, and is characterized in that: the method comprises the following steps:
s1, putting the brown corundum and the high titanium slag into a mixer at room temperature, and mixing for 30-300 minutes;
s2, putting the mixed raw materials into an electric arc furnace, and electrifying to completely melt the raw materials;
s3, crushing the cooled fusion cakes into particles of 1-3mm by using a crusher;
s4, feeding the crushed particles into jet milling and grading, and milling and grading to obtain powder with a particle size suitable for plasma spraying;
and S5, removing free iron carried by the crusher in the powder by using a magnetic separator to obtain finished powder.
2. The method for preparing AT powder for plasma spraying according to claim 1, wherein: the granularity of the brown corundum is 0.2-3mm, and the granularity of the high titanium slag is 0.2-3 mm.
3. The method for preparing AT powder for plasma spraying according to claim 1, wherein: the crusher in the S3 is one of a jaw crusher, a hammer crusher or a universal crusher.
4. The method for preparing AT powder for plasma spraying according to claim 1, wherein: the alumina-titania composite powder comprises the following components in parts by weight: brown corundum 970 parts and high titanium slag 30 parts.
5. The method for preparing AT powder for plasma spraying according to claim 1, wherein: the alumina-titania composite powder comprises the following components in parts by weight: 800 parts of brown corundum and 200 parts of high titanium slag.
6. The method for preparing AT powder for plasma spraying according to claim 1, wherein: the alumina-titania composite powder comprises the following components in parts by weight: 600 parts of brown corundum and 400 parts of high titanium slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011331998.5A CN112593181A (en) | 2020-11-24 | 2020-11-24 | Preparation method of AT powder for plasma spraying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011331998.5A CN112593181A (en) | 2020-11-24 | 2020-11-24 | Preparation method of AT powder for plasma spraying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112593181A true CN112593181A (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011331998.5A Pending CN112593181A (en) | 2020-11-24 | 2020-11-24 | Preparation method of AT powder for plasma spraying |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4746638A (en) * | 1985-09-27 | 1988-05-24 | Kureha Chemical Industry Co., Ltd. | Alumina-titania composite powder and process for preparing the same |
| JPH0525606A (en) * | 1991-07-18 | 1993-02-02 | Nippon Kenmazai Kogyo Kk | Chromium oxide thermal spraying material and production thereof |
| WO1998048071A1 (en) * | 1997-04-21 | 1998-10-29 | Ltu, Llc | The method of producing compositional coatings |
| CN101838136A (en) * | 2010-05-14 | 2010-09-22 | 上海大豪纳米材料喷涂有限公司 | Preparation method of aluminium oxide and titanium dioxide compound ceramic powder |
| CN108046772A (en) * | 2017-12-20 | 2018-05-18 | 山东磊宝锆业科技股份有限公司 | The production method of fused alumina/titanium oxide composite material |
| CN108358613A (en) * | 2018-01-31 | 2018-08-03 | 武汉理工大学 | A kind of compound hot spray powder of alundum (Al2O3)/TiO 2 precursor and preparation method thereof |
-
2020
- 2020-11-24 CN CN202011331998.5A patent/CN112593181A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4746638A (en) * | 1985-09-27 | 1988-05-24 | Kureha Chemical Industry Co., Ltd. | Alumina-titania composite powder and process for preparing the same |
| JPH0525606A (en) * | 1991-07-18 | 1993-02-02 | Nippon Kenmazai Kogyo Kk | Chromium oxide thermal spraying material and production thereof |
| WO1998048071A1 (en) * | 1997-04-21 | 1998-10-29 | Ltu, Llc | The method of producing compositional coatings |
| CN101838136A (en) * | 2010-05-14 | 2010-09-22 | 上海大豪纳米材料喷涂有限公司 | Preparation method of aluminium oxide and titanium dioxide compound ceramic powder |
| CN108046772A (en) * | 2017-12-20 | 2018-05-18 | 山东磊宝锆业科技股份有限公司 | The production method of fused alumina/titanium oxide composite material |
| CN108358613A (en) * | 2018-01-31 | 2018-08-03 | 武汉理工大学 | A kind of compound hot spray powder of alundum (Al2O3)/TiO 2 precursor and preparation method thereof |
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Application publication date: 20210402 |