CN106965374A - The engaging member and its processing method of a kind of stainless steel and plastics - Google Patents
The engaging member and its processing method of a kind of stainless steel and plastics Download PDFInfo
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- CN106965374A CN106965374A CN201710165824.8A CN201710165824A CN106965374A CN 106965374 A CN106965374 A CN 106965374A CN 201710165824 A CN201710165824 A CN 201710165824A CN 106965374 A CN106965374 A CN 106965374A
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- stainless steel
- plastics
- engaging member
- acid
- sunk structure
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
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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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/28—Acidic compositions for etching iron group metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
- B29C2045/14237—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity
- B29C2045/14245—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity using deforming or preforming means outside the mould cavity
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- ing And Chemical Polishing (AREA)
Abstract
The invention discloses a kind of stainless steel and the engaging member and its processing method of plastics.The engaging member includes stainless steel substrate, after being etched through corrosive liquid some sunk structures are formed with the surface of the stainless steel substrate, the mean depth of the sunk structure is 0.1 30 microns, the mean breadth of the sunk structure is 0.2 15 microns, injection moulding has the part-structure in plastics, the plastics to be embedded in the sunk structure on the stainless steel substrate.The sunk structure that stainless steel substrate in the present invention is formed after corrosive liquid is etched is micron order, after injection-moulded plastic the stability of engaging member more preferably, air-tightness it is more excellent.Technological process is shortened, production cost is reduced, is more suitable for large-scale production.And there is no special substance requirement for injection-moulded plastic, the scope of application is wider.
Description
Technical field
The present invention relates to product complex technique field, in particular it relates to the engaging member of a kind of stainless steel and plastics
And its processing method.
Background technology
With the fast development of electronics industry, the shell of more and more electronic products is formed after being combined using metal and plastics
Joint product, with reach outward appearance metal show, the purpose of Inner plastic.
At present, in the method that metal and plastic injection are combined, work is typically handled by multiple tracks on the surface of metal base
Sequence processes to form small nano-size pores, and the small nano-size pores are generally perpendicular to metal base.Specifically, can be first in metallic substrate surface
Processing forms micron order macropore, and further corrosion forms small nano-size pores.And to reach preferably filling effect, often again
One layer of profit hole agent of coating or oxide-film on porous wall.Finally, plastics are pressed directly into the metal with some small nano-size pores
Substrate surface.But, such a method is only capable of the large-scale application on aluminium alloy, it is impossible to application and other metals or the conjunction such as stainless steel
Jin Zhong.Because small nano-size pores are not readily available in other most metals or alloy, or obtained by this method
The size of the aperture obtained, distribution do not have the effect for causing metal to have strong bonded plastics.
Therefore, deposited on stainless steel according to this kind of nanometer injection moulding process combination plastics with reference to the joint product of rear formation
In problems such as the unstable, poor reliability of technique.Thus it is necessary to existing stainless steel and plastics composite products and its processing
Method is improved.
The content of the invention
It is an object of the present invention to provide the new technology side of the engaging member and its processing method of a kind of stainless steel and plastics
Case.
There is provided a kind of stainless steel and the engaging member of plastics according to the first aspect of the invention.The engaging member includes stainless
Steel substrate, some sunk structures are formed with after being etched through corrosive liquid on the surface of the stainless steel substrate, the sunk structure
Mean depth is 0.1-30 microns, and the mean breadth of the sunk structure is to be injected on 0.2-15 microns, the stainless steel substrate
The part-structure formed in plastics, the plastics is embedded in the sunk structure.
Alternatively, the average length of the sunk structure is more than 0.2 micron.
Alternatively, the sunk structure includes at least one of strip structure, folding shape structure, bends.
Alternatively, projection of the sunk structure on the stainless steel substrate surface includes the figure of closing.
Alternatively, cross sectional shape of the sunk structure on the direction perpendicular to the stainless steel substrate surface includes falling
At least one of triangle, arch, U-shaped, quadrangle.
Alternatively, the corrosive liquid includes：Nitric acid, phosphoric acid, sulfuric acid, sulfurous acid, hydrochloric acid, oxalic acid, acetic acid, hydrofluoric acid, horse
Come at least one of sour, phthalic acid, ethanedioic acid solution and its salting liquid.
Alternatively, the corrosive liquid includes：5-30% oxalic acid solutions and chlorate or combination, the 1-60% nitric acid of sulfate
Combination, 10-30% nitric acid with chloride or oxide and in the combination of 5-15% metal nitrates and 2-10% sulfate
It is at least one.
Alternatively, the temperature of the corrosive liquid etching process is 20-90 degrees Celsius, and the time is 1-50 minutes.
Alternatively, oxidation film layer is formed with the surface of the sunk structure, the thickness of the oxidation film layer is received for 1-20
Rice.
Alternatively, the oxide-film at least includes two kinds in ferriferous oxide, chromated oxide and nickel oxide.
Alternatively, the plastics include thermoplastic resin and packing material, matter of the packing material in the plastics
Amount percentage is 5-40%, and the packing material includes nylon fiber, carbon fiber, glass fibre, aromatic polyamide fibre, carbon
At least one of sour calcium, magnesium carbonate, silica and clay.
Alternatively, the thermoplastic resin at least includes polyphenylene sulfide, poly terephthalic acid butanol resin, polyamides
At least one of amine, makrolon and polyolefin.
According to the second aspect of the invention, the processing method for additionally providing a kind of stainless steel and plastics engaging member.The processing
Method includes：Stainless steel substrate is provided；Corrosive liquid etching process is carried out to the stainless steel substrate, in the stainless steel substrate
Surface forms the sunk structure that some depth are 0.1-30 microns, width is 0.2-15 microns；By plastic injection to described stainless
The surface of steel substrate, makes the part-structure in the plastics be embedded in the sunk structure, to form stainless steel and plastics
Engaging member.
Alternatively, the corrosive liquid includes：Nitric acid, phosphoric acid, sulfuric acid, sulfurous acid, hydrochloric acid, oxalic acid, acetic acid, hydrofluoric acid, horse
Come at least one of sour, phthalic acid, ethanedioic acid solution and its salting liquid.
Alternatively, the corrosive liquid includes：5-30% oxalic acid solutions and chlorate or combination, the 1-60% nitric acid of sulfate
The combination of combination, 10-30% nitric acid and 5-15% metal nitrates and 2-10% sulfate with chloride or oxide is extremely
Few one kind.
Alternatively, the temperature in the corrosive liquid etching process is 20-90 degrees Celsius, and the time is 1-50 minutes.
Alternatively, the stainless steel surfaces include oxidation film layer, and the thickness of the oxide-film is 1-20 nanometers.
Alternatively, the oxide-film at least includes two kinds in ferriferous oxide, chromated oxide and nickel oxide.
Alternatively, the plastics include thermoplastic resin and packing material, matter of the packing material in the plastics
Amount percentage is 5-40%, and the packing material includes nylon fiber, carbon fiber, glass fibre, aromatic polyamide fibre, carbon
At least one of sour calcium, magnesium carbonate, silica and clay.
Alternatively, the thermoplastic resin include polyphenylene sulfide, it is poly terephthalic acid butanol resin, polyamide, poly-
At least one of carbonic ester and polyolefin.
It was found by the inventors of the present invention that in the prior art, although occur in that and note some metal materials and plastic material
The compound technical scheme of modeling, still, be molded by small nano-size pores the joint product formed after combining exist technique it is unstable, can
By problems such as property differences.The high technical scheme of improved, compound reliability is not occurred in the prior art.
The sunk structure that stainless steel substrate in the present invention is formed after corrosive liquid is etched is micron order, after injection-moulded plastic
The stability of engaging member is more preferable, air-tightness is more excellent.Technological process is shortened, production cost is reduced, is more suitable for large-scale production.
And there is no special substance requirement for injection-moulded plastic, the scope of application is wider.
Therefore, the technical assignment to be realized of the present invention or technical problem to be solved be those skilled in the art from
It is not expecting or it is not expected that, therefore the present invention is a kind of new technical scheme.
By referring to the drawings to the detailed description of the exemplary embodiment of the present invention, further feature of the invention and its
Advantage will be made apparent from.
Brief description of the drawings
The accompanying drawing for being combined in the description and constituting a part for specification shows embodiments of the invention, and even
It is used for the principle for explaining the present invention together with its explanation.
Fig. 1 is the structural representation of a kind of stainless steel provided in an embodiment of the present invention and plastics engaging member；
Fig. 2 is the schematic diagram of the sunk structure on a kind of stainless steel substrate provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of the sunk structure on a kind of stainless steel substrate provided in an embodiment of the present invention；
Fig. 4 is the cross section structure schematic diagram of engaging member after a kind of shear fracture provided in an embodiment of the present invention.
Embodiment
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should be noted that：Unless had in addition
Body illustrates that the part and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments does not limit this
The scope of invention.
The description only actually at least one exemplary embodiment is illustrative below, never as to the present invention
And its any limitation applied or used.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as a part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
The invention provides a kind of stainless steel and the engaging member of plastics, the engaging member includes stainless steel substrate and plastics.Such as
Shown in Fig. 1 to Fig. 4, after being etched through corrosive liquid, some sunk structures 11, institute are formed with the surface of the stainless steel substrate 1
Sunk structure 11 is stated for micron-sized erosion trace.The mean depth H of the sunk structure 11 is 0.1-30 microns, the sunk structure
11 mean breadth W is 0.2-15 microns.Exist between the sunk structure 11 of acquisition and the surface of the stainless steel substrate 1 different
Angle of inclination.Specifically, the first depression that the sunk structure 11 includes there is slope with the surface of stainless steel substrate 1 is tied
Structure.First sunk structure can have different numerical value relative to the slope on the surface of the stainless steel substrate 1.It is described recessed
The second sunk structure perpendicular to the surface of stainless steel substrate 1 can also be included by falling into structure 11.In this way, recessed including described first
Falling into the sunk structure 11 of knot and second sunk structure has different angles of inclination relative to the surface of stainless steel substrate 1.
Chromium depleted region during the sunk structure 11 formed after corrosive liquid is etched is organized with stainless steel substrate 1 has very big
Relation.Specifically, in stainless steel substrate 1, due to the saturation degree change of the unstable of its structure, carbon in its different shape etc.
Feature, carbon (C) and chromium (Cr) easily form carbide, predominantly (Cr, Fe)23C6Type, and separated out at the crystal defects such as crystal boundary, lead
Cause to be formed substantial amounts of (Cr, Fe) at crystal defect in stainless steel base23C6Type phase, the chromium atom of solid solution state is substantial amounts of to be reduced, shape
Into the chromium depleted region of definite shape, perishable and corrosion-resistant cross-distribution region is formed on stainless steel substrate 1.It is such
Chromium depleted region is also solute atoms, impurity, the second equal rich region, forms micro- galvanic couple structure of state-passive state living, then via spy
The erosion of fixed corrosive medium, perishable zonal corrosion, comes off, and forms the sunk structure 11.
Injection moulding has the part-structure in plastics 2, the plastics 2 to be embedded in the depression on the stainless steel substrate 1
To form the engaging member in structure 11.Due to the sunk structure 11 exist relative to the surface of stainless steel substrate 1 it is different
Part-structure in angle of inclination, thus the plastics 2 can be embedded in the sunk structure 11 with different angles of inclination
It is internal.Alternatively, the sunk structure 11, which can be only formed on stainless steel substrate 1, needs the region of injection-moulded plastic 2.Or,
The sunk structure 11 can also be formed in all surfaces of stainless steel substrate 1.
The stainless steel and the engaging member of plastics that the present invention is provided have the following technical effect that, first, the technical program be
Perishable region forms the sunk structure 11, is micron scale construction.Due to the sunk structure 11 and the stainless steel substrate 1
Surface between there are different angles of inclination, when plastics 2 to be molded into the surface of the stainless steel substrate 1, in plastics 2
Part-structure can be embedded in the sunk structure 11 with different angles of inclination, to form the combination of plastics and stainless steel
Part.And the continuity of the sunk structure 11 is good, thus filling to the plastics 2 in the sunk structure 11 continuity also compared with
It is good.Therefore, plastics 2 can be embedded in as the root of plant in the depression in the surface structure 11 of stainless steel substrate 1, adhesion
Greatly, plastics 2 are difficult for drop-off in stretching or shear history.
Fig. 4 has gone out a kind of section signal of the faying face of stainless steel substrate 1 and plastics 2 after stretching experiment in the present embodiment
Figure.In this example, the micron order sunk structure 11 for etching formation is larger relatively deep, and the activation without moistening hole agent, plastics 2 can be in depression
Preferably filling is obtained in structure 11.And after traction stretching experiment, engaging member fracture location is in the middle part of plastics 2, and plastics 2
There is not crackle with the faying face of stainless steel substrate 1, thus demonstrate between the stainless steel substrate 1 in the present invention and plastics 2
With stronger adhesion.
Secondth, there is the different region of tissue, such as chromium depleted region in stainless steel substrate 1, it is former that such region has solid solution
The high potential materials such as son, the second phase and impurity, or be high, the more active area of energy with crystal defects such as crystal boundary, twins
Domain.The corrosive liquid of this programme is impregnated in, above-mentioned zone preferentially occurs burn into and come off, and slight corrosion only occurs for other regions,
Greatly reduce the consumption of corrosive liquid.Austenitic stainless steel is for example directed to, can form the depression using single-steeping ties
Structure 11.And other stainless steels are directed to, the depression can be formed by adding a corrosion propagation again on the basis of being etched in first time
Structure 11.Afterwards, direct injection molding, without carrying out other manufacturing procedures.Therefore, the technical program pore-forming technique flow letter
Change, reduce the percent defective of engaging member.
3rd, the injection-moulded plastic in the present invention is applied to most of plastics, including thermoplastic resin, such as polyphenylene sulfide resin
Fat (PPS), poly terephthalic acid butanol resin (PBT), polyamide (PA), makrolon (PC), polyolefin, polystyrene.And
The tiny blind hole formed in the prior art, mobility of the plastics in blind hole be not good, it is necessary to by means of moistening hole agent and PA or PBT
The physical and chemical reaction of material, therefore, PA or PBT material is confined to conventional techniques plastics classification, only this two class more
Plastics contain substantial amounts of carboxyl, occur exothermic reaction with profit hole agent cationic.Plastics need to be produced by means of exothermic reaction in injection
Raw heat, delays the solidification in pore.And the size of the micron order sunk structure 11 in the present invention is larger, without plastics with
The exothermic reaction of profit hole agent can obtain preferable filling, thus expand the Application Range of plastics.
It is excellent in order to after the part-structure in plastics 2 is embedded in into micron order sunk structure 11, obtain preferable adhesion
Selection of land, as shown in figure 3, the average length L of the sunk structure 11 is more than 0.2 micron.Specifically, can be with corrosion process
Composition, etching time, corrosion temperature by control corrosion rate medium etc. obtain the size of the sunk structure 11 of needs.
Preferably, section of the sunk structure 11 on the direction perpendicular to the surface of stainless steel substrate 1 is at least wrapped
Include at least one of del, arch, U-shaped, quadrangle.In this way, during injection, plastics 2 are easy to be embedded in such a depression knot
In structure 11.
The bearing of trend and distributional pattern of the sunk structure 11 can have different modes, as long as obtained by corrosion
Sunk structure 11 can produce absorption affinity to the embedded plastics 2 of injection.Preferably, the sunk structure 11 may include bar shaped knot
At least one of structure, folding shape structure, bends.In sunk structure in any one structure wherein, what it was formed
Inner recess space should ensure that continuity preferably, and bearing of trend is not undergone mutation.Plastics 2 are embedded in institute in this way, easily facilitating
State in sunk structure 11.
Intercrystalline corrosion on stainless steel substrate 1 is carried out along the edge of crystal grain, thus the sunk structure 11 is in institute
Stating the projection on the surface of stainless steel substrate 1 may include the figure of closing.The figure of such as described closing can surround crystal grain
The closed figure of rectangle, annular or other irregular shapes.For example shown in Fig. 2, Fig. 3.It should be noted that the closing
Figure can be formed by the connection of at least one of above-mentioned some strip structures, folding shape structure, bends.The depression knot
Projection of the structure 11 on the surface of stainless steel substrate 1 can also include open figure.As shown in figure 3, the sunk structure
11 can be strip structure that average length L is more than 0.2 millimeter etc..
Preferably, the surface of the sunk structure 11 is formed with oxidation film layer, and the thickness of the oxidation film layer is received for 1-20
Rice.Further, the oxide-film at least includes two kinds in ferriferous oxide, chromated oxide and nickel oxide.Compared to stainless
Steel substrate 1, the thermal conductivity factor of oxide-film is relatively low, and the heat that plastics 2 can be reduced during injection scatters and disappears, and has delayed plastics 2 to solidify, crystallize
Time, plastics 2 is more fully filled in the sunk structure 11, the bottom of the sunk structure 11 can also be obtained
Obtain and preferably fill.For example in the case of 400 DEG C, the thermal conductivity factor of stainless steel is 16.3W/mK, and di-iron trioxide is led
Hot coefficient is 5.1W/mK, and the thermal conductivity factor of ferrous oxide is 15.0W/mK, and the thermal conductivity factor of chromium oxide is left for 10W/mK
It is right.
It should be noted that the generation type of oxidation film layer is not exposed to limitation, high-temperature oxydation, chemistry can be included blunt
Change, electrochemical passivation mode.No matter which kind of mode its final effect is in stainless steel surfaces one layer of fine and close, thermal insulation of formation
Oxide-film.
The linear coefficient of expansion of the plastics 2 should be with stainless steel substrate 1 as close as in favor of the solidification of injection.
Due to being usually used in the PPS of injection or the linear expansion coefficient of PBT material in 6-8 × 10-5/ DEG C or so, and the line of stainless steel expands
Coefficient is 1.5 × 10-5/ DEG C, differ larger.Therefore, it is necessary to be modified for principal component resin material, combination is significantly reduced
The linear expansion coefficient of thing.Preferably, the plastics 2 include thermoplastic resin and packing material.Such as described thermoplastic resin can
With including in polyolefin polyphenylene sulfide, poly terephthalic acid butanol resin, polyamide, makrolon, polyolefin at least
It is a kind of.Mass percent of the packing material in the plastics 2 can be 5-40%, and the packing material may include nylon
At least one in fiber, carbon fiber, glass fibre, aromatic polyamide fibre, calcium carbonate, magnesium carbonate, silica and clay
Kind.In this way, the packing material is improved the principal component resin material of the plastics 2, the line of plastics 2 can be significantly reduced
The coefficient of expansion, so that close to the linear expansion coefficient of stainless steel.
In the present invention, a kind of processing method of stainless steel and plastics engaging member includes：
First there is provided stainless steel substrate 1, in order to which plastics 2 to be molded into the surface of stainless steel substrate 1.At present, it is conventional
Stainless steel includes chromium mass fraction in austenitic stainless steel and martensitic stain less steel, tissue and is more than 12%.Chromium atom is not
Diffusion velocity is small in rust steel, easily forms chromium depleted region.And stainless steel have high corrosion resistance main reason is that chromium
Oxidation forms fine and close oxide-film, improves material corrosion resistance.Therefore, the perishable region such as substantial amounts of chromium depleted region is after stainless steel
Continuous etching provides good organization foundation.Thus, the technical program and inapplicable ferrous materials, but apply to it is whole not
Become rusty steel.
For the ease of carrying out corrosion treatment to the surface of stainless steel substrate 1, oil removing first can be carried out to stainless steel substrate 1 and taken off
Fat processing.Specifically, stainless steel substrate 1 can be soaked in 35-80 degrees Celsius of cleaning agent and carries out ultrasonically treated 60-600
Second.Afterwards, pure water rinsing is carried out.For example, the cleaning agent can be with 100-300g/L acid, alkali or organic solvent etc..
Afterwards, corrosive liquid etching process is carried out to the stainless steel substrate 1, to form micron-sized sunk structure 11.Figure
2nd, Fig. 3, Fig. 4 show the surface appearance feature etched using the technical program, and the mean depth H of the sunk structure 11 is
0.1-30 microns, mean breadth W be 0.2-15 microns.
The sunk structure 11 includes the first sunk structure that there is slope relative to stainless steel substrate 1.Described first is recessed
Different numerical value can be had relative to the slope on the surface of the stainless steel substrate 1 by falling into structure.The sunk structure 11 may be used also
With including the second sunk structure perpendicular to the surface of stainless steel substrate 1.In this way, including the described first depression knot and described the
The sunk structure 11 of two sunk structures has different angles of inclination relative to the surface of stainless steel substrate 1.Enable in plastics
Part-structure be embedded in as the root of plant in sunk structure 11, the adhesion between it is bigger.
Can stainless steel, which corrode, to form the key of sunk structure 11 and is rate of corrosion between chromium depleted region and other regions
It is inconsistent, that is, the corrosion rate in chromium depleted region be greater than other regions.Therefore, the species of corrosive liquid is constituted not only with composition
Decide whether that sunk structure 11 can be formed, and determine the size of sunk structure 11.Therefore, it is preferred several groups in this programme
Corrosive liquid, constitutes weak oxide medium, is more beneficial for the formation of micron order sunk structure 11.Alternatively, the corrosive liquid includes：
Nitric acid, phosphoric acid, sulfuric acid, sulfurous acid, hydrochloric acid, oxalic acid, acetic acid, hydrofluoric acid, maleic acid, phthalic acid, ethanedioic acid solution and its salt are molten
At least one of liquid.Alternatively, the corrosive liquid includes：5-30% oxalic acid solutions and chlorate or combination, the 1- of sulfate
60% nitric acid and combination, 10-30% nitric acid and the 5-15% metal nitrates and 2-10% sulfate of chloride or oxide
At least one of combination.
Preferably, the temperature control in the corrosive liquid etching treatment procedure is at 20-90 degrees Celsius, and the duration is 1-50
Minute.In this way, by the multiple parameters in control method, resulting in dimension and shape of sunk structure 11 of needs etc..
Alternatively, formed on the surface of the stainless steel substrate 1 after sunk structure 11, in the table of the sunk structure 11
Face can working process formation oxide-film.The thickness of the oxidation film layer can be 1-20 nanometers.The oxide-film can at least include iron
Two kinds in oxide, chromated oxide and nickel oxide.In this way, the heat that plastics 2 can be reduced during injection scatters and disappears, plastics are delayed
2 solidifications, the time of crystallization, plastics 2 are enable to be more satisfactory filling with the sunk structure 11, the bottom of the sunk structure 11
Portion also results in preferable filling.It should be noted that the generation type of oxidation film layer is not exposed to limitation, height can be included
Warm oxidation, chemical passivation, electrochemical passivation mode.No matter which kind of mode its final effect is in one layer of cause of stainless steel surfaces formation
The oxide-film of close, thermal insulation.
Finally, plastics 2 are molded into the surface of the stainless steel substrate 1, the part-structure in the plastics 2 is embedded in
In the sunk structure 11, to form the engaging member of stainless steel and plastics.Preferably, the plastics 2 include thermoplastic resin and
Packing material.The thermoplastic resin can include polyolefin polyphenylene sulfide, poly terephthalic acid butanol resin, polyamides
At least one of amine, makrolon, polyolefin.Mass percent of the packing material in the plastics 2 can be 5-
40%, the packing material may include nylon fiber, carbon fiber, glass fibre, aromatic polyamide fibre, calcium carbonate, carbonic acid
At least one of magnesium, silica and clay.In this way, the packing material adds to the principal component resin material of the plastics 2
To improve, the linear expansion coefficient of plastics 2 can be significantly reduced, so that close to the linear expansion coefficient of stainless steel.
In a kind of embodiment of the present invention, using 10-30% nitric acid and 5-15% metal nitrates and 2-
The combination corrosive liquid of 10% sulfate is etched to stainless steel substrate 1, and etching process temperature is 60 degrees Celsius；Then 300
DEG C injection temperature under, by the time of its injection mixed by PBT+30wt% glass fibres to the surface of stainless steel substrate 1, most
The engaging member of stainless steel and plastics is obtained eventually.The area of plastics and stainless steel engaging member is 0.5cm2, led on cupping machine
It is pulled and stretches, obtains its average shear disruptive force for 32.5MPa.
Although some specific embodiments of the present invention are described in detail by example, the skill of this area
Art personnel are it should be understood that example above is merely to illustrate, the scope being not intended to be limiting of the invention.The skill of this area
Art personnel to above example it should be understood that can modify without departing from the scope and spirit of the present invention.This hair
Bright scope is defined by the following claims.
Claims (20)
1. the engaging member of a kind of stainless steel and plastics, it is characterised in that the engaging member includes stainless steel substrate, through corroding liquid corrosion
Some sunk structures are formed with after quarter on the surface of the stainless steel substrate, the mean depth of the sunk structure is micro- for 0.1-30
Rice, the mean breadth of the sunk structure is that injection moulding has plastics, the plastics on 0.2-15 microns, the stainless steel substrate
In part-structure be embedded in the sunk structure.
2. the engaging member of stainless steel according to claim 1 and plastics, it is characterised in that the average length of the sunk structure
Degree is more than 0.2 micron.
3. the engaging member of stainless steel according to claim 1 and plastics, it is characterised in that the sunk structure includes bar shaped
At least one of structure, folding shape structure, bends.
4. the engaging member of stainless steel according to claim 1 and plastics, it is characterised in that the sunk structure it is described not
Projection on rust steel substrate surface includes the figure of closing.
5. the engaging member of stainless steel according to claim 1 and plastics, it is characterised in that the sunk structure perpendicular to
Cross sectional shape on the direction on the stainless steel substrate surface includes at least one of del, arch, U-shaped, quadrangle.
6. the engaging member of stainless steel according to claim 1 and plastics, it is characterised in that the corrosive liquid includes：Nitric acid,
In phosphoric acid, sulfuric acid, sulfurous acid, hydrochloric acid, oxalic acid, acetic acid, hydrofluoric acid, maleic acid, phthalic acid, ethanedioic acid solution and its salting liquid
It is at least one.
7. the engaging member of stainless steel according to claim 1 and plastics, it is characterised in that the corrosive liquid includes：5-
The combination, the combination of 1-60% nitric acid and chloride or oxide, 10-30% nitre of 30% oxalic acid solution and chlorate or sulfate
At least one of combination of acid and 5-15% metal nitrates and 2-10% sulfate.
8. the engaging member of stainless steel according to claim 1 and plastics, it is characterised in that the corrosive liquid etching process
Temperature is 20-90 degrees Celsius, and the time is 1-50 minutes.
9. the engaging member of stainless steel according to claim 1 and plastics, it is characterised in that on the surface of the sunk structure
Oxidation film layer is formed with, the thickness of the oxidation film layer is 1-20 nanometers.
10. the engaging member of stainless steel according to claim 9 and plastics, it is characterised in that the oxide-film at least includes
Two kinds in ferriferous oxide, chromated oxide and nickel oxide.
11. the engaging member of stainless steel according to claim 1 and plastics, it is characterised in that the plastics include thermoplasticity
Resin and packing material, mass percent of the packing material in the plastics are 5-40%, and the packing material includes
In nylon fiber, carbon fiber, glass fibre, aromatic polyamide fibre, calcium carbonate, magnesium carbonate, silica and clay extremely
Few one kind.
12. the engaging member of stainless steel according to claim 11 and plastics, it is characterised in that the thermoplastic resin includes
At least one of polyphenylene sulfide, poly terephthalic acid butanol resin, polyamide, makrolon and polyolefin.
13. the processing method of a kind of stainless steel and plastics engaging member, it is characterised in that including：Stainless steel substrate is provided；To described
Stainless steel substrate carries out corrosive liquid etching process, some mean depths is formed on the surface of the stainless steel substrate micro- for 0.1-30
Rice, mean breadth are 0.2-15 microns of sunk structure；By plastic injection to the surface of the stainless steel substrate, make the plastics
In part-structure be embedded in the sunk structure, to form the engaging member of stainless steel and plastics.
14. the processing method of stainless steel according to claim 13 and plastics engaging member, it is characterised in that the corrosive liquid
Including：Nitric acid, phosphoric acid, sulfuric acid, sulfurous acid, hydrochloric acid, oxalic acid, acetic acid, hydrofluoric acid, maleic acid, phthalic acid, ethanedioic acid solution and its
At least one of salting liquid.
15. the processing method of stainless steel according to claim 13 and plastics engaging member, it is characterised in that the corrosive liquid
Including：The combination of 5-30% oxalic acid solutions and chlorate or sulfate, the combination of 1-60% nitric acid and chloride or oxide,
At least one of the combination of 10-30% nitric acid and 5-15% metal nitrates and 2-10% sulfate.
16. the processing method of stainless steel according to claim 13 and plastics engaging member, it is characterised in that the corrosive liquid
Temperature in etching process is 20-90 degrees Celsius, and the time is 1-50 minutes.
17. the processing method of stainless steel according to claim 13 and plastics engaging member, it is characterised in that the stainless steel
Surface includes oxidation film layer, and the thickness of the oxide-film is 1-20 nanometers.
18. the processing method of stainless steel according to claim 17 and plastics engaging member, it is characterised in that the oxide-film
At least include two kinds in ferriferous oxide, chromated oxide and nickel oxide.
19. the processing method of stainless steel according to claim 13 and plastics engaging member, it is characterised in that the plastics bag
Thermoplastic resin and packing material are included, mass percent of the packing material in the plastics is 5-40%, the filling
Material includes nylon fiber, carbon fiber, glass fibre, aromatic polyamide fibre, calcium carbonate, magnesium carbonate, silica and sticked
At least one of soil.
20. the processing method of stainless steel according to claim 19 and plastics engaging member, it is characterised in that the thermoplasticity
Resin includes at least one in polyphenylene sulfide, poly terephthalic acid butanol resin, polyamide, makrolon and polyolefin
Kind.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710165824.8A CN106965374A (en) | 2017-03-20 | 2017-03-20 | The engaging member and its processing method of a kind of stainless steel and plastics |
| PCT/CN2017/090915 WO2018171077A1 (en) | 2017-03-20 | 2017-06-29 | Stainless steel and plastic combined piece and processing method therefor |
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| CN201710165824.8A CN106965374A (en) | 2017-03-20 | 2017-03-20 | The engaging member and its processing method of a kind of stainless steel and plastics |
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| WO (1) | WO2018171077A1 (en) |
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| WO2018171077A1 (en) | 2018-09-27 |
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