CN106756714B - A kind of preparation method of the stainless steel material with surface insulation layer - Google Patents
A kind of preparation method of the stainless steel material with surface insulation layer Download PDFInfo
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- CN106756714B CN106756714B CN201611081491.2A CN201611081491A CN106756714B CN 106756714 B CN106756714 B CN 106756714B CN 201611081491 A CN201611081491 A CN 201611081491A CN 106756714 B CN106756714 B CN 106756714B
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- 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
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
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- 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
- C23C4/18—After-treatment
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- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Chemical Treatment Of Metals (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses a kind of preparation methods of stainless steel material with surface insulation layer, including step A: surface of stainless steel is carried out sandblasting；B: in the surface of stainless steel thermal spraying aluminium powder Jing Guo processing of step A, the stainless steel material that aluminium layer is attached with to surface is obtained after cooling；C: it will be immersed in alkali wash water by the stainless steel material of step B processing, the aluminium layer surface of surface of stainless steel made to form tafoni；D: include to dry sintered heat insulating after lifting out in the silica colloid solution of nano montmorillonite micro mist by being immersed by the stainless steel material of step C processing, the stainless steel material that surface has insulating layer is obtained after cooling.The method provided in the present invention for preparing insulating layer in surface of stainless steel, operation is simple, environmentally friendly pollution-free, is suitble to industrialized production.
Description
Technical field
The invention belongs to stainless steel processing technologies, and in particular to a kind of preparation of the stainless steel material with surface insulation layer
Method.
Background technique
Stainless steel material weatherability, resistance to weak corrosive medium ability are good, have been applied to the side in each field in modern society
Aspect face.Stainless steel material processability is good, surface treatment mode diversification, in consumer electronics industry, medical device industry
Equal fields have been widely used.
With advances in technology and requirement of the people to material in sciemtifec and technical sphere is higher and higher, in some special applications
Occasion does not require nothing more than stainless steel and possesses high-intensitive and good processability, it is also desirable to which its property of can adapt to possesses other spies
Property.Such as, in field of consumer electronics, product or shell as made of stainless steel easily gather electrostatic during use,
So if stainless steel material is non-conductive to can be satisfied the demand.For another example, many electronic electric equipment products or shell
It is all made of stainless steel, if stainless steel material is non-conductive, will increase its safety.Currently, frequently with allow not
The method that the method that rust steel material surface forms insulating layer mostly uses spraying, i.e., it is conventional to spray one layer in surface of stainless steel
The paint film of insulation is to achieve the goal.For this method although convenience is feasible, on the one hand spraying process increases many costs, another
Aspect coating also easily causes environmental pollution during preparation and use.
Summary of the invention
For in the prior art surface of stainless steel prepare a layer insulating use spraying method the shortcomings that, the present invention
In provide a kind of new process that insulating layer is prepared in surface of stainless steel, this method can be in stainless steel material table
Wheat flour is for a layer insulating, and preparation method is simple to operation, environmentally friendly pollution-free.
The technical problems to be solved by the invention are achieved by following steps:
A kind of preparation method of the stainless steel material with surface insulation layer, includes the following steps:
A, surface of stainless steel is subjected to sandblasting, makes stainless steel surface roughness Ra 9-15 μm
B, it in the surface of stainless steel thermal spraying aluminium powder Jing Guo processing of step A, obtains after cooling to surface and is attached with aluminium layer
Stainless steel material；
C, it will be immersed in alkali wash water by the stainless steel material of step B processing, make the aluminium layer surface of surface of stainless steel
Tafoni is formed, is dried after then cleaning the stainless steel material with deionized water shower stand-by；
D, the silicon dioxide colloid for including nano montmorillonite micro mist for the stainless steel material immersion by step C processing is molten
In liquid, vertically stainless steel material is lifted out with the speed of 0.2-0.4 cm/s after immersing 3-5 minutes, then in 65-85
Suspension is dried to surface and parches under the conditions of DEG C, is then sintered 30-75 minutes under the conditions of 460-520 DEG C, is being lower than sintering temperature
20-30 minutes are kept the temperature under the conditions of 80-100 DEG C, it is cooling.
The impurity and oxidative deactivation film on the one hand being removed surface of stainless steel in step A using sandblasting, are on the other hand increased
Add the roughness of surface of stainless steel, and keep surface roughness more uniform, convenient for aluminium layer in subsequent thermal sandblast aluminium dust technique
It can more firmly be attached on stainless steel substrate.Roughness must be controlled strictly, too small then without effect, be overruned
The appearance that then will have a direct impact on stainless steel material causes product bad.
Thermal spraying aluminium powder is using one of electric arc spraying, plasma spraying or supersonic flame spraying, step in step B
The aluminum layer thickness control of surface of stainless steel attachment in rapid B is advisable for 0.5-1mm.Aluminum layer thickness also needs accurately to control, excessively thin
It is then unable to complete step C, it is blocked up, influence the thickness of stainless steel material entirety.
Further, alkali wash water ingredient used in step C is sodium hydroxide 20-50g/L, sodium carbonate 15-20 g/L, carbon
Sour hydrogen sodium 5-10 g/L, sodium metaphosphate 5-12 g/L, ethylene glycol 5-8 g/L, triethanolamine 2-5 g/L, diacetone alcohol 0.5-0.8
G/L, surplus are water.The key technology of step C is characterized by will corrode uniform tafoni out on aluminium layer, pure use comprising
Have the lye of sodium hydroxide to be corroded is easy to cause the hole on aluminium layer uneven in the actual operation process, so as to cause rear
Continuous absorption colloidal sol is uneven.Sodium metaphosphate, ethylene glycol, triethanolamine and aqueous levelling are utilized in the alkali wash water used in the present invention
Agent diacetone alcohol collective effect occurs aluminium layer surface corrosion process mild and uniform.The uniform erosion generated in the step
Hole is not only uniformly distributed but also depth is higher, and the empty internal structure degree of disorder is high, and the ability for adsorbing colloidal sol is very strong.
The time of alkali cleaning is 0.1-0.5 hours in step C, and alkali cleaning temperature is 20-45 DEG C.
There is the stainless steel material of adsorption hole aluminium layer to immerse the titanium dioxide containing nano montmorillonite micro mist surface in step D
Firm insulating layer is formed in colloidal silica solution, after sintering.Contain nanometer in the silica colloid solution used in the present invention
Montmorillonite powder can increase the insulation performance of insulating layer, while can also promote sintering character, promote insulating layer after being sintered
Firmness degree.
It include the silica colloid solution of nano montmorillonite micro mist in step D the preparation method comprises the following steps: by positive silicic acid second
Ester, dehydrated alcohol, deionized water, hydrochloric acid are matched with molar ratio 1:5.8-6.2:3.2-3.5:0.055, first by positive silicic acid
Ethyl ester and dehydrated alcohol are sufficiently mixed in reaction vessel, and deionization then is added dropwise under 600-800r/min mixing speed
Water and hydrochloric acid are stirred at reflux under the conditions of 45-55 DEG C 1-2 hours after being added dropwise, and above-mentioned reaction system gross mass is then added
The nano montmorillonite micro mist of 3-8% stirs 15-20 minutes under 1200-1500r/min mixing speed, cooling to colloidal sol obtained
The dimethylformamide of above-mentioned reaction system gross mass 0.5-0.9% is added dropwise afterwards, continues to stir under 600-800r/min mixing speed
It mixes 15-20 minutes, required colloidal solution is obtained after natural cooling.
Further, nano montmorillonite micro powder granule particle size range is 30-120nm in above-mentioned preparation method, further excellent
Selection of land, the nano montmorillonite micro powder granule particle size range are 60nm.
The invention has the following beneficial effects:
1, a kind of new process for preparing a layer insulating in surface of stainless steel is provided in the present invention, is used
It is insulating layer good insulation preformance that this method is prepared in surface of stainless steel, sturdy and durable.
2, method provided by the invention can effectively protect stainless steel base in the insulating layer that surface of stainless steel is prepared
Material is not corroded by the external world, can be used as a kind of stainless steel anticorrosion process carry out using.
3, the method provided in the present invention for preparing insulating layer in surface of stainless steel, operation is simple, to environment
It is friendly pollution-free, it is suitble to industrialized production.
Specific embodiment
The contents of the present invention are further described below by embodiment.
Embodiment 1
Step 1: the preparation of stainless steel test piece
Selecting with a thickness of the trade mark of 2mm is 304 stainless steel materials, is machined into the test piece of 10 × 35mm.By it is above-mentioned not
It is dried after steel test piece dehydrated alcohol wiped clean of becoming rusty, blasting treatment is carried out to stainless steel test piece after drying, keeps its surface thick
Rugosity is 9 μm.
Step 2: thermal spraying aluminium powder
One layer of aluminium layer will be sprayed on surface by electric arc spraying by step 1 treated stainless steel test piece.Spraying process
In powder feeding rate be 150/min, thermal spraying spraying source to stainless steel substrate surface spray distance be 280mm, and use
Aluminum particle partial size be 25 μm, aluminium powder purity be higher than 99wt%.
The aluminum layer thickness of thermal spraying is 0.5mm.
Step 3: alkaline etching
It will be immersed in alkali wash water by step 2 treated stainless steel test piece, alkali wash water ingredient is sodium hydroxide 4g/L, carbon
Sour sodium 15L, sodium bicarbonate 10g/L, sodium metaphosphate 12g/L, ethylene glycol 8g/L, triethanolamine 4g/L, 0.8 g/L of diacetone alcohol,
Surplus is water.The time of alkali cleaning is 0.2 hour, and alkali cleaning temperature is 25 DEG C.
Will treated stainless steel bar cleaned with deionized water shower after dry it is stand-by.
Step 4: impregnation
The stainless steel test piece immersion handled by step 3 includes the silica colloid solution of nano montmorillonite micro mist
In, stainless steel material vertically is lifted out by immersion with the speed of 0.2 cm/s after five minutes, is then hung under the conditions of 70 DEG C
It is dried to surface to parch, be then sintered 60 minutes under the conditions of 465 DEG C, 20 points are kept the temperature under the conditions of being lower than 85 DEG C of sintering temperature
Clock obtains the stainless steel test piece that required surface has insulating layer after cooling.
It include the silica colloid solution of nano montmorillonite micro mist used in step 4 the preparation method comprises the following steps: will just
Silester, dehydrated alcohol, deionized water, hydrochloric acid are matched with molar ratio 1:6:3.5:0.055, first by ethyl orthosilicate
It is sufficiently mixed in reaction vessel with dehydrated alcohol, deionized water and salt then is added dropwise under 600r/min mixing speed
Acid is stirred at reflux 1.5 hours under the conditions of 50 DEG C after being added dropwise, and the nanometer that above-mentioned reaction system gross mass 6% is then added is covered
De- stone micro mist, is stirred 15 minutes under 1200r/min mixing speed, and it is total that above-mentioned reaction system is added dropwise after colloidal sol obtained is cooling
The dimethylformamide of quality 0.7% continues stirring 20 minutes under 600r/min mixing speed, needed for obtaining after natural cooling
Colloidal solution.
Embodiment 2
This embodiment differs from embodiment 1 in that:
The stainless steel test piece surface roughness that sandblasting obtains in step 1 is 10.5 μm；
Aluminum layer thickness is 0.55mm in step 2；
The time of alkali cleaning is 0.2 hour in step 3, and alkali cleaning temperature is 20 DEG C.
The impregnation time is 5 minutes in step 4, and pull rate is 0.2 cm/s, and suspension drying temperature is 80 DEG C, sintering temperature
Degree is 475 DEG C, and sintering time is 65 minutes, and soaking time is 25 minutes under the conditions of being lower than 100 DEG C of sintering temperature.
Embodiment 3:
This embodiment differs from embodiment 1 in that:
The stainless steel test piece surface roughness that sandblasting obtains in step 1 is 12 μm；
The method of thermal spraying aluminum is plasma spraying, aluminum layer thickness 0.7mm in step 2.
The time of alkali cleaning is 0.4 hour in step 3, and alkali cleaning temperature is 35 DEG C.
The impregnation time is 5 minutes in step 4, and pull rate is 0.3 cm/s, and suspension drying temperature is 78 DEG C, sintering temperature
Degree is 500 DEG C, and sintering time is 45 minutes, and soaking time is 20 minutes under the conditions of being lower than 80 DEG C of sintering temperature.
Embodiment 4:
This embodiment differs from embodiment 1 in that:
The stainless steel test piece surface roughness that sandblasting obtains in step 1 is 13.8 μm；
The method of thermal spraying aluminum is plasma spraying, aluminum layer thickness 0.9mm in step 2.
The time of alkali cleaning is 0.5 hour in step 3, and alkali cleaning temperature is 35 DEG C.
The impregnation time is 5 minutes in step 4, and pull rate is 0.4 cm/s, and suspension drying temperature is 85 DEG C, sintering temperature
Degree is 510 DEG C, and sintering time is 55 minutes, and soaking time is 30 minutes under the conditions of being lower than 92 DEG C of sintering temperature.
Embodiment 5
This embodiment differs from embodiment 1 in that:
The stainless steel test piece surface roughness that sandblasting obtains in step 1 is 15 μm；
The method of thermal spraying aluminum is supersonic flame spraying, aluminum layer thickness 1.0mm in step 2.
The time of alkali cleaning is 0.5 hour in step 3, and alkali cleaning temperature is 45 DEG C.
The impregnation time is 5 minutes in step 4, and pull rate is 0.2 cm/s, and suspension drying temperature is 85 DEG C, sintering temperature
Degree is 520 DEG C, and sintering time is 50 minutes, and soaking time is 30 minutes under the conditions of being lower than 100 DEG C of sintering temperature.
The stainless steel test piece insulating capacity with surface insulation layer that vegetation obtains in above-described embodiment is good, insulating layer hardness
Height has extraordinary practical value.
Finally, it should be noted that above embodiments be only to illustrate the technical solution of the embodiment of the present invention rather than to its into
Row limitation, although the embodiment of the present invention is described in detail referring to preferred embodiment, those skilled in the art
It should be understood that the technical solution of the embodiment of the present invention can be still modified or replaced equivalently, and these are modified or wait
The range of modified technical solution disengaging technical solution of the embodiment of the present invention cannot also be made with replacement.
Claims (5)
1. a kind of preparation method of the stainless steel material with surface insulation layer, it is characterised in that include the following steps:
A, surface of stainless steel is subjected to sandblasting, makes stainless steel surface roughness Ra 9-15 μm；
B, it in the surface of stainless steel thermal spraying aluminium powder Jing Guo processing of step A, obtains after cooling to surface and is attached with aluminium layer not
Become rusty Steel material；
C, it will be immersed in alkali wash water by the stainless steel material of step B processing, form the aluminium layer surface of surface of stainless steel
Tafoni is dried stand-by after then cleaning the stainless steel material with deionized water shower；
It D, include the silica colloid solution of nano montmorillonite micro mist by the stainless steel material immersion by step C processing
In, vertically stainless steel material is lifted out with the speed of 0.2-0.4 cm/s after immersing 3-5 minutes, then at 65-85 DEG C
Under the conditions of suspension be dried to surface and parch, then be sintered 30-75 minutes under the conditions of 460-520 DEG C, lower than sintering temperature 80-
20-30 minutes are kept the temperature under the conditions of 100 DEG C, it is cooling；
The aluminum layer thickness that surface of stainless steel is adhered in step B is 0.5-1mm；
Alkali wash water ingredient used in step C is sodium hydroxide 20-50g/L, sodium carbonate 15-20 g/L, sodium bicarbonate 5-10 g/
L, sodium metaphosphate 5-12 g/L, ethylene glycol 5-8 g/L, triethanolamine 2-5 g/L, diacetone alcohol 0.5-0.8 g/L, surplus are
Water；
It include the silica colloid solution of nano montmorillonite micro mist in step D the preparation method comprises the following steps: by ethyl orthosilicate, nothing
Water-ethanol, deionized water, hydrochloric acid are matched with molar ratio 1:5.8-6.2:3.2-3.5:0.055, first by ethyl orthosilicate
Be sufficiently mixed in reaction vessel with dehydrated alcohol, be then added dropwise under 600-800r/min mixing speed deionized water and
Hydrochloric acid is stirred at reflux under the conditions of 45-55 DEG C 1-2 hours after being added dropwise, and above-mentioned reaction system gross mass 3-8% is then added
Nano montmorillonite micro mist, stir 15-20 minutes under 1200-1500r/min mixing speed, dripped after colloidal sol obtained is cooling
In addition stating the dimethylformamide of reaction system gross mass 0.5-0.9%, continue to stir under 600-800r/min mixing speed
15-20 minutes, required colloidal solution is obtained after natural cooling.
2. preparation method as described in claim 1, it is characterised in that: in step B thermal spraying aluminium powder using electric arc spraying, etc. from
One of son spraying or supersonic flame spraying.
3. preparation method as described in claim 1, it is characterised in that: the time of alkali cleaning is 0.1-0.5 hours in step C, alkali
Washing temperature is 20-45 DEG C.
4. preparation method as described in claim 1, it is characterised in that: the nano montmorillonite micro powder granule particle size range is
30-120nm。
5. preparation method as claimed in claim 4, it is characterised in that: the nano montmorillonite micro powder granule particle size range is
60nm。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108103430B (en) * | 2017-11-24 | 2020-02-14 | 四川富乐德科技发展有限公司 | Control method for sharp burrs on surface of aluminum meltallizing layer in arc process |
| DE102019116363A1 (en) | 2019-06-17 | 2020-12-17 | Benteler Automobiltechnik Gmbh | Method for the production of an armor component for motor vehicles |
| CN112475293A (en) * | 2020-12-08 | 2021-03-12 | 中北大学 | Preparation method of micro-nano lattice hole ultrathin stainless steel filter plate |
| CN113178297B (en) * | 2021-03-19 | 2023-03-10 | 深圳市博迪科技开发有限公司 | Preparation method of heating needle insulating layer and heating needle |
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| CN103895160A (en) * | 2012-12-28 | 2014-07-02 | 比亚迪股份有限公司 | Preparation method of stainless steel-resin composite and stainless steel-resin composite prepared by same |
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| JP2003268527A (en) * | 2002-03-18 | 2003-09-25 | Nippon Steel Corp | Sealing method, sealing-treated spray deposit, and fan or blower each having the deposit |
| CN101560113A (en) * | 2008-04-19 | 2009-10-21 | 黄定忠 | Hard surface treatment composition and application thereof, cladding formed after hard surface treatment and hard surface material with same |
| CN101961709A (en) * | 2010-09-09 | 2011-02-02 | 东华大学 | Preparation method of stainless steel surface coating with low temperature insulation |
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Effective date of registration: 20191219 Address after: No.88 binwan Road, Binhai New Area, economic development zone, Fenghua District, Ningbo, Zhejiang Province Patentee after: Ningbo Bout Metal Products Co., Ltd. Address before: Foshan City, Guangdong province 528518 city streets Gaoming District (Xi'an) Guang'an River Road Development Zone No. 4 5 first floor of the garage Patentee before: Foshan Gaoming District Chengruiji Technology Co., Ltd. |
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