CN104785773A - Surface spray fusing anti-corrosion anti-abrasion heat superconducting nano-graphene alloy powder and manufacturing method thereof - Google Patents
Surface spray fusing anti-corrosion anti-abrasion heat superconducting nano-graphene alloy powder and manufacturing method thereof Download PDFInfo
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Abstract
The invention provides surface spray fusing anti-corrosion anti-abrasion heat superconducting nano-graphene alloy powder and a manufacturing method thereof. The surface spray fusing anti-corrosion anti-abrasion heat superconducting nano-graphene alloy powder is composed of nano-graphene powder, superfine iron powder, yttrium oxide, cerium oxide powder, neutral zirconium dioxide sol, light magnesium oxide powder and nickel 50% chromium alloy powder. Ceramic balls are placed and mixed for 48 hours, copious cooling is conducted for 48 hours at the temperature of -196 DEG C, the mixture is heated to 200 DEG C lasting for 12 hours and is destressed, the superfine iron powder forms a partial semi-amorphous material, the powder cannot be cracked in the cladding process, meshes are better formed, nano-graphene fully exerts the heat conduction performance, and after the powder is copiously cooled and heated, 10% to 15% of resin is added, 5% to 15% of ethyl alcohol is then added, and stirring is conducted for 13 hours. Compared with 316 stainless steel, the powder is more resistant to corrosion and abrasion, service life is prolonged by more than five times, hardness is higher, rigidity is better, the bonding strength and the hardness of a coating are high, stress is small, no deformation or disengagement exists in the high-temperature cladding process, and the powder is denser after surface cladding.
Description
Technical field
The present invention relates to the core component of large coal-fired power plant for the manufacture of drum, burner, water-cooling wall superheater, economizer, air preheater, reheater etc., also the work piece production materials, particularly a kind of heat superconducting nano-graphene alloyed powder and manufacture method thereof such as petrochemical industry anticorrosive anti-wear pipe can be widely used in.
Background technology
The cooler that current coal-burning power plant adopts is all light pipe or fin tube type economizer, shortcoming is: 1) light pipe or fin tube type economizer use welding to be wound around fin or expand tube fin mostly, easily depart between fin and pipe and produce gap, this will cause fin root thermal resistance larger, corrosion rate is accelerated, thus affects heat-transfer effect.Tubular type regenerator compactness is low, exchange capability of heat is poor, efficiency is low, need to consume a large amount of tubing, floor space is large, and production cost is high, and in finned tube side, because medium and heat exchanger tube are perpendicular contact, cause flow resistance to increase, easy dust stratification (or fouling) easily corrodes by steam flush, affects the life-span of regenerator.2) the easy dust stratification of fin-tube heat exchanger structure.Due to heat exchanger employing is tubular structure, and flue gas and pipe are perpendicular contact, and this certainly will cause fume side resistance drop to strengthen, and fin and tube wall all easily dust stratification.3) heat exchanger is due to the impact of low temperature dew point acid corrosion, may cause heat exchanger tube fast erosion and affect safe operation of power plant.What economizer life-span of current onsite application was the shortest is 3 months, and the longest is no more than 3 years.
In order to solve economizer acid corrosion-resistant problem, most of producer adopts ND steel or No. 20 steel pipe upper surface enamel spraying materials, although use ND steel can extend cooler life-span some months or one or two years, but can't resolve root problem.At tube-surface spraying ceramic materials, the life problems of cooler can be solved, but the coefficient of heat transfer of ceramic material is extremely low, only has 1W/ (mk) left and right, have impact on the heat transfer property of cooler.
Summary of the invention
Object of the present invention will overcome the above problems exactly, provides a kind of surperficial spray fusing anticorrosive anti-wear heat superconducting nano-graphene alloyed powder and manufacture method thereof; Cold spray method coating and high-frequency heated cladding surface conjunction, make workpiece substrate life; Ability 30% sulfuric acid, heat conduction is accelerated, can anticorrosive anti-wear.
Technical scheme of the present invention is achieved in that
A kind of surperficial spray fusing anticorrosive anti-wear heat superconducting nano-graphene alloyed powder, composition is made up of the rare powder of nano-graphite, superfine iron powder, yittrium oxide, cerium oxide powder, neutral zirconia sol, light magnesium oxide powder, nickel 50% evanohm powder component, and wherein each component accounts for:
A manufacture method for surperficial spray fusing anticorrosive anti-wear heat superconducting nano-graphene alloyed powder, the steps include:
1), by rare for the nano-graphite of above-mentioned component powder, superfine iron powder, yittrium oxide, cerium oxide powder, neutral zirconia sol, light magnesium oxide powder, nickel 50% evanohm powder, alcohol puts Ceramic Balls mixing, rotating speed 60-120 per minute turns, rotate forward 6 hours, reverse 6 hours, keep powder material 30 degree, mixing amounts to 48 hours, deep cooling-196 spends 48 hours again, make superfine iron powder at-196 degree fission formation half amorphous, be heated to be 200 degree of destressings in 12 hours again, cold and hot process is except destressing, make superfine iron powder forming section half amorphous material, powder material adds resin 10-15% after deep cooling heating, add alcohol 5-15% again and stir 13 hours.
2), inspection warehouse-in.
Beneficial effect of the present invention: anticorrosive anti-wear heat superconducting nano-graphene alloyed powder of the present invention, cold spray method coating and high-frequency heated cladding surface conjunction, make workpiece substrate life; Ability 30% sulfuric acid, heat conduction is accelerated, and anticorrosive anti-wear is stainless steel more than 5 times.The present invention is than the 316 stainless steels more anticorrosive anti-wear life-span more than five times, and hardness is higher, and toughness is better, the bond strength of coating is high, hardness is high, and stress is little, indeformable in high temperature cladding, do not take off, closeer after surface cladding, power plant uses material of the present invention energy-conserving and environment-protective more.
Detailed description of the invention
A kind of surperficial spray fusing anticorrosive anti-wear heat superconducting nano-graphene alloyed powder and manufacture method thereof:
1) ceramic pot, Ceramic Balls, tank inner surface are cleaned up, as the special powder of Frequency Surface cladding, powder fusing point 960-1280 degree.Invention vital point is that iron powder is not acidproof, is modified as ability 30% sulfuric acid, and heat conduction is accelerated, and anticorrosive anti-wear is stainless steel more than 5 times.
2) with nano-graphite rare alloy-layer powder preparation cladding material: heat superconducting nano-graphite rare alloy coat composition is the rare powder of nano-graphite, superfine iron powder, yittrium oxide, neutral zirconia sol, nickel 50% evanohm powder, light magnesium oxide, cerium oxide powder, resin, alcohol.Carry out deep cooling-96 after mixing up material to spend, after 48 hours, form another kind of new material; Key point is that deep cooling-96 spends gradient temperature change, and this material forms the rare non-crystaline amorphous metal network structure of nano-graphite at high temperature cladding process, and heat-transfer rate is fast, and hardness is high, flawless, and in the temperature of gas, thermal conductance speed is faster, resistance to 30% sulfuric acid, resistance to erosion.Anticorrosive anti-wear heat superconducting nano-graphene alloyed powder of the present invention, cold spray method coating and high-frequency heated cladding surface conjunction, make workpiece substrate life.
3) powder material surface performance after spray fusing:
A) at the rare alloyed powder acid and alkali-resistance of steel tube surface spray fusing heat superconducting graphite, its thermal conductivity factor is up to 30W/ (mk) left and right;
B) board-like economizer heating surface is all made up of the one-time surface participating in exchange heat directly, more material and space can be effectively utilized than plate-fin or tube shell type structure, therefore heat exchange efficiency is high, and its heat transfer coefficient reaches 80W/ (m2k), and rolled steel dosage reduces by 50%;
C) economizer not easily dust stratification or fouling and good effect of heat exchange, can form cascaded structure arbitrarily;
D) adopt modular core unit structure, be convenient to produce, assemble and regulate, have the advantage that very strong integration is easy with maintenance;
E) more than the 10 years board-like economizer life-span;
F) spray fusing bond strength 230mpa, hardness is hv1200;
G) this invention material is at 80-150 degree, and resistance to 30% sulfuric acid, resistance to hot gas wash away, and saves coal than enamel pipe, plate, example: 2 groups 300,000 kilowatts, theory calculate saves coal 35770-38000 ton every year, and reduce sulfur dioxide (SO2) emissions, there are several thousand 30-200 ten thousand kilowatts of generating sets in the whole nation.
4) inspection warehouse-in.
Embodiment 1:
One, surperficial spray fusing anticorrosive anti-wear heat superconducting nano-graphene alloyed powder composition is made up of the rare powder of nano-graphite, superfine iron powder, yittrium oxide, cerium oxide powder, neutral zirconia sol, light magnesium oxide powder, nickel 50% evanohm powder component, and wherein each component accounts for:
Two, the manufacture method of surperficial spray fusing anticorrosive anti-wear heat superconducting nano-graphene alloyed powder: the steps include:
1, by rare for the nano-graphite of above-mentioned component powder, superfine iron powder, yittrium oxide, cerium oxide powder, neutral zirconia sol, light magnesium oxide powder, nickel 50% evanohm powder, alcohol puts Ceramic Balls mixing, rotating speed 60-120 per minute turns, rotate forward 6 hours, reverse 6 hours, mixing amounts to 48 hours, keep powder material 30 degree, deep cooling-196 spends 48 hours again, make superfine iron powder at-196 degree fission formation half amorphous, be heated to be 200 degree of destressings in 12 hours again, cold and hot process is except destressing, make superfine iron powder forming section half amorphous material, this powder cladding process can not crack, better formation is netted allows nano-graphite is rare gives full play to thermal conductivity, powder material adds resin 10-15% after deep cooling heating, add alcohol 5-15% again and stir 13 hours.
2, inspection warehouse-in.
Embodiment 2:
One, surperficial spray fusing anticorrosive anti-wear heat superconducting nano-graphene alloyed powder composition is made up of the rare powder of nano-graphite, superfine iron powder, yittrium oxide, cerium oxide powder, neutral zirconia sol, light magnesium oxide powder, nickel 50% evanohm powder component, and wherein each component accounts for:
Two, the manufacture method of surperficial spray fusing anticorrosive anti-wear heat superconducting nano-graphene alloyed powder: the steps include:
With embodiment 1
Embodiment 3:
One, surperficial spray fusing anticorrosive anti-wear heat superconducting nano-graphene alloyed powder composition is made up of the rare powder of nano-graphite, superfine iron powder, yittrium oxide, cerium oxide powder, neutral zirconia sol, light magnesium oxide powder, nickel 50% evanohm powder component, and wherein each component accounts for:
Two, the manufacture method of surperficial spray fusing anticorrosive anti-wear heat superconducting nano-graphene alloyed powder: its step is with embodiment 1.
Claims (2)
1. a surperficial spray fusing anticorrosive anti-wear heat superconducting nano-graphene alloyed powder, it is characterized in that: composition is made up of the rare powder of nano-graphite, superfine iron powder, yittrium oxide, cerium oxide powder, neutral zirconia sol, light magnesium oxide powder, nickel 50% evanohm powder component, and wherein each component accounts for:
2. a manufacture method for surperficial spray fusing anticorrosive anti-wear heat superconducting nano-graphene alloyed powder, the steps include:
1), by rare for the nano-graphite of above-mentioned component powder, superfine iron powder, yittrium oxide, cerium oxide powder, neutral zirconia sol, light magnesium oxide powder, nickel 50% evanohm powder, alcohol puts Ceramic Balls mixing, rotating speed 60-120 per minute turns, rotate forward 6 hours, reverse 6 hours, keep powder material 30 degree, mixing amounts to 48 hours, deep cooling-196 spends 48 hours again, make superfine iron powder at-196 degree fission formation half amorphous, be heated to be 200 degree of destressings in 12 hours again, cold and hot process is except destressing, make superfine iron powder forming section half amorphous material, powder material adds resin 10-15% after deep cooling heating, add alcohol 5-15% again and stir 13 hours,
2), inspection warehouse-in.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105543762A (en) * | 2015-12-28 | 2016-05-04 | 韩功篑 | High-strength environment-friendly wear-resistant coating for inner wall of internal combustion engine cylinder and preparation method of coating |
| CN106238963A (en) * | 2016-09-18 | 2016-12-21 | 安徽克里斯特新材料有限公司 | A kind of Modified Iron base Graphene composite solder and preparation method thereof |
| CN106270926A (en) * | 2016-09-18 | 2017-01-04 | 安徽克里斯特新材料有限公司 | Pressure roller roll surface open arc overlaying method based on Metal Substrate Graphene composite solder |
| CN106271210A (en) * | 2016-09-18 | 2017-01-04 | 安徽克里斯特新材料有限公司 | A kind of iron-based Graphene built-up welding composite solder and preparation method thereof |
| CN106271227A (en) * | 2016-09-18 | 2017-01-04 | 安徽克里斯特新材料有限公司 | A kind of Modified Iron base Graphene thermal spraying combined wire and preparation method thereof |
| CN106270936A (en) * | 2016-09-18 | 2017-01-04 | 安徽克里斯特新材料有限公司 | Pressure roller roll surface Gas Shielded welding method based on Graphene composite powder solder |
| CN106312368A (en) * | 2016-09-18 | 2017-01-11 | 安徽克里斯特新材料有限公司 | Fe-based graphene thermal spraying composite welding wire and preparation method thereof |
| CN106312244A (en) * | 2016-09-18 | 2017-01-11 | 安徽克里斯特新材料有限公司 | Compression roller surface open arc overlaying method based on Fe-based graphene composite solder |
| CN106312249A (en) * | 2016-09-18 | 2017-01-11 | 安徽克里斯特新材料有限公司 | Compression roller surface open arc overlaying method based on modified Fe-based graphene composite solder |
| CN106346114A (en) * | 2016-09-18 | 2017-01-25 | 安徽克里斯特新材料有限公司 | Press roller surface gas shielded surfacing process based on modified Fe-based graphene composite solder |
| CN108546948A (en) * | 2018-05-22 | 2018-09-18 | 中北大学 | A kind of medium carbon steel surface high-performance coat and preparation method thereof |
| CN110565099A (en) * | 2019-09-03 | 2019-12-13 | 本溪陆甲科技有限公司 | Double protective agent for corrosion of chromium-plated hydraulic part in water-glycol hydraulic system |
| CN111154959A (en) * | 2020-01-13 | 2020-05-15 | 中国科学院苏州纳米技术与纳米仿生研究所南昌研究院 | Preparation method and application of amorphous coating |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105543762A (en) * | 2015-12-28 | 2016-05-04 | 韩功篑 | High-strength environment-friendly wear-resistant coating for inner wall of internal combustion engine cylinder and preparation method of coating |
| CN106312368A (en) * | 2016-09-18 | 2017-01-11 | 安徽克里斯特新材料有限公司 | Fe-based graphene thermal spraying composite welding wire and preparation method thereof |
| CN106312249A (en) * | 2016-09-18 | 2017-01-11 | 安徽克里斯特新材料有限公司 | Compression roller surface open arc overlaying method based on modified Fe-based graphene composite solder |
| CN106271210A (en) * | 2016-09-18 | 2017-01-04 | 安徽克里斯特新材料有限公司 | A kind of iron-based Graphene built-up welding composite solder and preparation method thereof |
| CN106271227A (en) * | 2016-09-18 | 2017-01-04 | 安徽克里斯特新材料有限公司 | A kind of Modified Iron base Graphene thermal spraying combined wire and preparation method thereof |
| CN106270936A (en) * | 2016-09-18 | 2017-01-04 | 安徽克里斯特新材料有限公司 | Pressure roller roll surface Gas Shielded welding method based on Graphene composite powder solder |
| CN106238963A (en) * | 2016-09-18 | 2016-12-21 | 安徽克里斯特新材料有限公司 | A kind of Modified Iron base Graphene composite solder and preparation method thereof |
| CN106312244A (en) * | 2016-09-18 | 2017-01-11 | 安徽克里斯特新材料有限公司 | Compression roller surface open arc overlaying method based on Fe-based graphene composite solder |
| CN106270926A (en) * | 2016-09-18 | 2017-01-04 | 安徽克里斯特新材料有限公司 | Pressure roller roll surface open arc overlaying method based on Metal Substrate Graphene composite solder |
| CN106346114A (en) * | 2016-09-18 | 2017-01-25 | 安徽克里斯特新材料有限公司 | Press roller surface gas shielded surfacing process based on modified Fe-based graphene composite solder |
| CN108546948A (en) * | 2018-05-22 | 2018-09-18 | 中北大学 | A kind of medium carbon steel surface high-performance coat and preparation method thereof |
| CN108546948B (en) * | 2018-05-22 | 2019-11-01 | 中北大学 | A kind of medium carbon steel surface high-performance coat and preparation method thereof |
| CN110565099A (en) * | 2019-09-03 | 2019-12-13 | 本溪陆甲科技有限公司 | Double protective agent for corrosion of chromium-plated hydraulic part in water-glycol hydraulic system |
| CN110565099B (en) * | 2019-09-03 | 2021-03-02 | 本溪陆甲科技有限公司 | Double protective agent for corrosion of chromium-plated hydraulic part in water-glycol hydraulic system |
| CN111154959A (en) * | 2020-01-13 | 2020-05-15 | 中国科学院苏州纳米技术与纳米仿生研究所南昌研究院 | Preparation method and application of amorphous coating |
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Effective date of registration: 20190906 Address after: 211100 No. 739 Shengan Road, Binjiang Economic Development Zone, Jiangning District, Nanjing, Jiangsu. Patentee after: Nanjing Meirui Wear Resistant Material Technology Co.,Ltd. Address before: 243000 Anhui city in Ma'anshan Province, Huashan District No. 7 Hubei Road No. 106 Co-patentee before: Wu Lijun Patentee before: Dai Yazhou |
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