CN101962768A - Technology for preparing metal surface coating through compounding multiple processes - Google Patents
Technology for preparing metal surface coating through compounding multiple processes Download PDFInfo
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- CN101962768A CN101962768A CN2010102898783A CN201010289878A CN101962768A CN 101962768 A CN101962768 A CN 101962768A CN 2010102898783 A CN2010102898783 A CN 2010102898783A CN 201010289878 A CN201010289878 A CN 201010289878A CN 101962768 A CN101962768 A CN 101962768A
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Abstract
The invention relates to a technology for preparing a metal surface coating through compounding multiple processes, which is characterized by preparing a coating on the surface of a metal substrate by simultaneously using three coating preparation processes of thermal spraying, cold spraying and laser remelting. The technology comprises the following steps of: (1) pretreating the surface of the metal substrate; (2) spraying by using electric arcs; (3) remelting by using a laser; and (4) spraying coldly. By simultaneously utilizing the three coating preparation processes, combining the advantages of the three processes and overcoming the defects of the three processes, the technology can be used for preparing the high-performance coating with the functions of abrasion resistance, corrosion resistance, heat resistance, high-temperature oxidation resistance and fatigue spalling resistance in low cost and high efficiency.
Description
Technical field:
The present invention relates to a kind of technical field of metal surface processing, be specially a kind of multiplex (MUX) compound preparation coating for metal surfaces technology of planting.
Technical background:
In the defeated material of industries such as metallurgy, electric power, petrochemical industry, mine, building materials, ash discharge, flue, dedusting Thermal Equipment, some parts surfaces are carried out a large amount of wear-resisting, anticorrosion, heatproofs, antioxidation treatment.
Cold spraying or brush coating prepare coating can play the certain protection effect, but low because of its intensity, come off easily, short replaced by novel process gradually work-ing life.
At present, what the mode of these processing was more advanced is to adopt thermospray mode and laser remolten to prepare coating, and the mode of thermospray has the electric arc spraying of comprising, plasma spraying, flame plating.
Arc spraying technology is the hot-spraying techniques rising star of rising the eighties in 20th century, this technology is to be thermal source with two one metal wires or powder core silk at the electric arc that the short circuit of spray gun end produces, the silk material that melts is with the compressed air atomizing is molten drop, be mapped to a kind of technology that metallic substrate surface forms sprayed coating at a high speed.Because it has characteristics such as Application Areas is wide, coating performance good, energy-conservation, economic, safe and receives attention day by day.But, because particle spraying speed is limited and degree of oxidation is serious, the coating quality of electric arc spraying is affected, there be a certain amount of being mingled with and pore, reduced wear-resisting, the rot-resistant effect of coating.In addition, with regard to bonding strength, though the bonding strength of arc spraying coating is owing to use the oxygen-acetylene flame spray coating, but belong to mechanical bond eventually, bonding force a little less than, thereby can not carry load, not abrasive wear resistance and erosive wear, even some coating in use directly comes off.
And flame plating, plasma spraying also have above-mentioned shortcoming.
The laser remolten technology is meant with different adding material modes places selecteed coated material on by the cladding matrix surface, make it to melt simultaneously through laser irradiation with matrix surface one deck, and it is extremely low to form extent of dilution behind the rapid solidification, become the surface fused coating of metallurgical binding with matrix, thereby increase the processing method that the damaged position of matrix size also can show wear-resisting, anti-corrosion, heat-resisting, the anti-oxidant and electrical specification of improving substrate material surface etc.Advantages such as that the laser remolten technology has is little than low dilution rate, heat affected zone, form metallurgical binding with basal plane, cladding part torsional deformation is smaller, process easily is automated, general laser remolten will carry out or protects with shielding gas simultaneously in vacuum.The thin plate that laser remolten generally need dust simultaneously or remelting has placed, silk material scolder.Because surface arrangement thin plate, silk material at some different in nature parts are relatively more difficult, so influenced its use range and working efficiency greatly.
Summary of the invention:
The objective of the invention is to overcome the deficiencies in the prior art and a kind of multiplex (MUX) is provided the compound preparation coating for metal surfaces technology of planting.
Technical scheme of the present invention is achieved in that
A kind of multiplex (MUX) compound preparation coating for metal surfaces technology of planting is characterized in that it has used thermospray, cold spraying, three kinds of preparation technology of coating of laser remolten to prepare coating simultaneously, and it comprises following steps:
(1). metallic substrate surface pre-treatment: handle with blasting by abrasives, remove dirt and oxide skin, surface coarsening.
(2). electric arc spraying.
(3). laser remolten.
(4). cold spraying.
Described coating can be metal, alloy, pottery, metal and ceramic mixture, thickness 0.4～2mm.
Described thermospray can be electric arc spraying or flame plating or plasma spraying.Its spraying can be Al, Zn, Fe, Ni, Cr, 7Cr13, Ni-Cr-Ti alloy, Fe-B alloy, Fe-B-REM rare earth alloy, FeCrNiBSiRE powder cored filament material, carbide ceramics powder cored filament material with the silk material.
Described cold spraying can be the cold conditions spraying or cold conditions is brushed, and its materials used is hole sealing agent, rare earth oxidation inhibitor, ceramic coating.
Above-mentioned hole sealing agent is the resol of 40～50wt% and the mixture of 50～60wt% aluminium powder, and its solid matter granularity is 30～80um; Above-mentioned rare earth oxidation inhibitor is the CeO of 2～4wt%
2, 5～10wt% the mixture of water glass of FeAl powder, 41～53wt% of Ni, 40～45%wt, its solid matter granularity is 30～80um; Above-mentioned ceramic coating is high alumina 925 cement 15～20wt%, and granularity is that the aluminium powder of 30～80um accounts for 15～20wt%, and granularity is that the silicon carbide of 800～1200um accounts for 20～30wt%, water glass 40～50wt%.
Described laser remolten can be laser melting coating or laser welding; It can be to remelting of full coat layer or partial coating remelting, and the object of laser remolten is the coating of thermospray.
Compared with prior art, the invention has the advantages that:
1. compare with the coating of single hot-spraying techniques preparation, through behind the laser remolten, equal material volume is finer and close, intensity is higher, bonding force is stronger.By laser remolten, thermally sprayed coating has been carried out secondary fusion, eliminate its stratiform and take the embedding structure, and the slag class of getting rid of in the body layer is mingled with and pore the density and the intensity of increase coating.Can also make the combination of thermally sprayed coating and matrix have mechanical bond to be converted into metallurgical binding in addition, bonding strength improves greatly.
2. compare with laser remolten prepared coating with single, present technique is directly used the laser irradiation thermally sprayed coating, can the irradiation abnormal member, and the room and time that has overcome because of arranging powder, silk or plate that remelting is used retrains.In addition, some itself is had good intensity and the thermally sprayed coating not strong with the metal base bonding force, only need to carry out the effect that laser remolten just can play its bonding force of reinforcement, need not whole remeltings, saved the time, improved efficient at some points of thermally sprayed coating.
3. the employing cold spray process forms protective layer on the thermally sprayed coating behind the laser remolten, and it plays sealed porosity, isolated oxidation, prevents to corrode and the surperficial effect of strengthening, and has further improved the performance of coating.
4. applied widely.The present invention can application rule and erose metal base, can prepare the supercoat of boiler water wall, superheater, reheater, draught fan impeller, revolving furnace fume hood.
In sum, the technology of the present invention by utilizing three kinds to prepare coating simultaneously, combine their advantage, overcome their deficiency, can be low-cost, high efficiency preparation has wear-resisting, anticorrosion, heat-resisting, resistance to high temperature oxidation, antifatigue is peeled off the high-performance coating of function.
Embodiment:
Embodiment 1: the 20G steel pipe to φ 100 * 100 * 5mm carries out sandblasting, removes the impurity and the oxide skin on surface, and degree of cleaning reach the Sa3 level, and roughness reaches 50um.Use TLAS-400C high-performance supersonic electric arc spraying equipment spraying JH-7Cr13 powder cored filament material, preparation thickness is the arc spraying coating of 0.7mm; Use R-700 laser casting-on machine that partial coating is carried out the remelting of full coat layer, the HZ/S of laser irradiation speed Φ 3mm * (0-12).The coating of preparing is brushed the rare earth oxidation inhibitor again, and the rare earth oxidation inhibitor is the CeO of 2～4wt%
2, 5～10wt% the mixture of water glass of FeAl powder, 41～53wt% of Ni, 40～45%wt, its solid matter granularity is 30～80um.Spontaneous curing 12h puts into baking oven then and toast 2h under 120 ℃ of environment.
The salient features of gained coating: bonding strength 376N/mm
2, void content 0.01%, coating hardness are 553HV0.1, coating hardness HRC＞52, and wear resistance is 6 times of 20G.
Embodiment 2: the 20G steel pipe to φ 100 * 100 * 5mm carries out sandblasting, removes the impurity and the oxide skin on surface, and degree of cleaning reach 3 grades of Sa, and roughness reaches 50um.Use TLAS-400C high-performance supersonic electric arc spraying equipment spraying JH-SAM powder cored filament material, preparation thickness is the arc spraying coating of 0.7mm.Use R-700 laser casting-on machine that partial coating is carried out the remelting of full coat layer, the HZ/S of laser irradiation speed Φ 3mm * (0-12).Brush hole sealing agent again, hole sealing agent is the resol of 40～50wt% and the mixture of 50～60wt% aluminium powder, thickness 0.2mm.Spontaneous curing 12h puts into baking oven then and toast 2h under 120 ℃ of environment.
The salient features of gained coating: bonding strength 305N/mm
2, void content 0.03%, coating hardness are 1430HV0.1, coating hardness HRC＞63, and wear resistance is 30 times of 20G.
Embodiment 3: the 20G steel pipe to φ 100 * 100 * 5mm carries out sandblasting, removes the impurity and the oxide skin on surface, and degree of cleaning reach 3 grades of Sa, and roughness reaches 50um.Use TLAS-400C high-performance supersonic electric arc spraying equipment spraying JH-7Cr 13 powder cored filament materials, preparation thickness is the arc spraying coating of 0.7mm.Use R-700 laser casting-on machine that partial coating is carried out the partial coating remelting, the HZ/S of laser irradiation speed Φ 3mm * (0-12), irradiation width 3mm, the spacing 20mm of irradiation bar and bar.Brush the rare earth oxidation inhibitor again, the rare earth oxidation inhibitor is the CeO of 2～4wt%
2, 5～10wt% the mixture of water glass of FeAl powder, 41～53wt% of Ni, 40～45%wt, its solid matter granularity is 30～80um.Spontaneous curing 12h puts into baking oven then and toast 2h under 120 ℃ of environment.
The salient features of gained coating: bonding strength 156N/mm
2, void content 0.02%, coating hardness are 490HV0.1, coating hardness HRC＞48, and wear resistance is 3 times of 20G.
Embodiment 4: the 20G steel pipe to φ 100 * 100 * 5mm carries out sandblasting, removes the impurity and the oxide skin on surface, and degree of cleaning reach 3 grades of Sa, and roughness reaches 50um.Use TLAS-400C high-performance supersonic electric arc spraying equipment spraying JH-SAM powder cored filament material, preparation thickness is the arc spraying coating of 0.7mm.Use R-700 laser casting-on machine that partial coating is carried out the partial coating remelting, the HZ/S of laser irradiation speed Φ 3mm * (0-12), irradiation width 3mm, the spacing 20mm of irradiation bar and bar.Brush hole sealing agent again, hole sealing agent is the resol of 40～50wt% and the mixture of 50～60wt% aluminium powder, thickness 0.2mm.Spontaneous curing 12h puts into baking oven then and toast 2h under 120 ℃ of environment.
The salient features of gained coating: bonding strength 124N/mm
2, void content 0.04%, coating hardness are 1362HV0.1, coating hardness HRC＞60, and wear resistance is 21 times of 20G.
Claims (6)
1. a multiplex (MUX) compound preparation coating for metal surfaces technology of planting is characterized in that it has used thermospray, cold spraying, three kinds of preparation technology of coating of laser remolten to prepare coating in metallic substrate surface simultaneously, and it comprises following steps:
(1). metallic substrate surface pre-treatment: handle with blasting by abrasives, remove dirt and oxide skin, surface coarsening;
(2). electric arc spraying;
(3). laser remolten;
(4). cold spraying.
2. a kind of multiplex (MUX) according to claim 1 compound preparation coating for metal surfaces technology of planting is characterized in that described coating is metal, alloy, pottery, metal and ceramic mixture, thickness 0.4～2mm.
3. a kind of multiplex (MUX) according to claim 1 compound preparation coating for metal surfaces technology of planting, it is characterized in that described thermospray can be electric arc spraying, flame plating, plasma spraying, it can be Al, Zn, Fe, Ni, Cr, 7Cr13, Ni-Cr-Ti alloy, Fe-B alloy, Fe-B-REM rare earth alloy, FeCrNiBSiRE powder cored filament material, carbide ceramics powder cored filament material with material.
4. a kind of multiplex (MUX) according to claim 1 compound preparation coating for metal surfaces technology of planting is characterized in that described cold spraying can be the cold conditions spraying or cold conditions is brushed, and its materials used is hole sealing agent, rare earth oxidation inhibitor, ceramic coating.
5. the resol that hole sealing agent according to claim 4 is 40～50wt% and the mixture of 50～60wt% aluminium powder, its solid matter granularity is 30～80um; Described rare earth oxidation inhibitor is the CeO of 2～4wt%
2, 5～10wt% the mixture of water glass of FeAl powder, 41～53wt% of Ni, 40～45%wt, its solid matter granularity is 30～80um; Described ceramic coating is high alumina 925 cement 15～20wt%, and granularity is that the aluminium powder of 30～80um accounts for 15～20wt%, and granularity is that the silicon carbide of 800～1200um accounts for 20～30wt%, water glass 40～50wt%.
6. a kind of multiplex (MUX) according to claim 1 compound preparation coating for metal surfaces technology of planting is characterized in that described laser remolten can be laser melting coating or laser welding; It can be to remelting of full coat layer or partial coating remelting, and the object of laser remolten is the coating of thermospray.
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| CN2010102898783A CN101962768A (en) | 2010-09-18 | 2010-09-18 | Technology for preparing metal surface coating through compounding multiple processes |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103333579A (en) * | 2013-07-09 | 2013-10-02 | 烟台开发区蓝鲸金属修复有限公司 | Hole sealing agent for surfaces of thermal sprayed coatings and applications thereof |
| CN104018156A (en) * | 2014-06-18 | 2014-09-03 | 浙江工业大学 | Metal-based/diamond laser composite coating and preparation method thereof |
| CN106500540A (en) * | 2015-09-06 | 2017-03-15 | 上海上电漕泾发电有限公司 | A kind of method for reducing boiler heating surface abrasion |
| CN107794526A (en) * | 2017-04-28 | 2018-03-13 | 西安交通大学 | A kind of laser melting coating and the synchronous compound metal parts manufacturing process of cold spray |
| CN108165919A (en) * | 2018-01-29 | 2018-06-15 | 北京工业大学 | A kind of method that laser remolten prepares the wear-resisting cladding layers of FeBC |
| CN110052378A (en) * | 2019-06-06 | 2019-07-26 | 昆明理工大学 | A kind of corrosion-resistant protection reinforcing bar preparation method for building |
| CN110343989A (en) * | 2019-08-12 | 2019-10-18 | 无锡康斯达机械电器有限公司 | A kind of thermal spraying zinc-aluminium water resistant coating and its application method |
| CN111962008A (en) * | 2020-08-04 | 2020-11-20 | 北京赛亿科技有限公司 | Preparation method of boiler four-pipe anticorrosive coating based on laser remelting technology |
| WO2021128841A1 (en) * | 2019-12-27 | 2021-07-01 | 浙江工业大学 | Laser composite cold spraying in-situ nitriding strengthening method and cold spraying device |
| TWI754601B (en) * | 2021-07-16 | 2022-02-01 | 義派克國際有限公司 | Plasma ionization deposition process and structure for strengthening wear-resistant metal surface |
| CN116411236A (en) * | 2020-12-02 | 2023-07-11 | 苏州热工研究院有限公司 | Preparation method of thermal spraying coating hole sealing agent |
-
2010
- 2010-09-18 CN CN2010102898783A patent/CN101962768A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103333579A (en) * | 2013-07-09 | 2013-10-02 | 烟台开发区蓝鲸金属修复有限公司 | Hole sealing agent for surfaces of thermal sprayed coatings and applications thereof |
| CN103333579B (en) * | 2013-07-09 | 2016-03-30 | 烟台开发区蓝鲸金属修复有限公司 | A kind of hot spray coating surface-sealing agent and application thereof |
| CN104018156A (en) * | 2014-06-18 | 2014-09-03 | 浙江工业大学 | Metal-based/diamond laser composite coating and preparation method thereof |
| CN106500540A (en) * | 2015-09-06 | 2017-03-15 | 上海上电漕泾发电有限公司 | A kind of method for reducing boiler heating surface abrasion |
| CN107794526A (en) * | 2017-04-28 | 2018-03-13 | 西安交通大学 | A kind of laser melting coating and the synchronous compound metal parts manufacturing process of cold spray |
| CN108165919A (en) * | 2018-01-29 | 2018-06-15 | 北京工业大学 | A kind of method that laser remolten prepares the wear-resisting cladding layers of FeBC |
| CN110052378A (en) * | 2019-06-06 | 2019-07-26 | 昆明理工大学 | A kind of corrosion-resistant protection reinforcing bar preparation method for building |
| CN110343989A (en) * | 2019-08-12 | 2019-10-18 | 无锡康斯达机械电器有限公司 | A kind of thermal spraying zinc-aluminium water resistant coating and its application method |
| WO2021128841A1 (en) * | 2019-12-27 | 2021-07-01 | 浙江工业大学 | Laser composite cold spraying in-situ nitriding strengthening method and cold spraying device |
| CN111962008A (en) * | 2020-08-04 | 2020-11-20 | 北京赛亿科技有限公司 | Preparation method of boiler four-pipe anticorrosive coating based on laser remelting technology |
| CN116411236A (en) * | 2020-12-02 | 2023-07-11 | 苏州热工研究院有限公司 | Preparation method of thermal spraying coating hole sealing agent |
| TWI754601B (en) * | 2021-07-16 | 2022-02-01 | 義派克國際有限公司 | Plasma ionization deposition process and structure for strengthening wear-resistant metal surface |
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Application publication date: 20110202 |