CN105112667B - A kind of aluminum steel laminar composite separation and recovery method - Google Patents
A kind of aluminum steel laminar composite separation and recovery method Download PDFInfo
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- CN105112667B CN105112667B CN201510511700.1A CN201510511700A CN105112667B CN 105112667 B CN105112667 B CN 105112667B CN 201510511700 A CN201510511700 A CN 201510511700A CN 105112667 B CN105112667 B CN 105112667B
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Abstract
A kind of aluminum steel laminar composite separation and recovery method, comprises the following steps：Step S1, the aluminum steel combination interface for entering to exercise aluminum steel laminar composite to aluminum steel laminar composite produces the annealing of intermetallic compound, and the average thickness of the intermetallic compound is reached more than 25um；Step S2, imposing peeling force to aluminium lamination and the steel layer of aluminum steel laminar composite makes aluminium lamination be separated with steel layer.The aluminium lamination and steel layer in aluminum steel laminar composite can be simply and rapidly separated by this method, and then reclaims the single metal material for obtaining aluminum steel laminar composite.
Description
Technical field
The invention mainly relates to material recovery technical field, more particularly to aluminum steel laminar composite recovery technology field.
Background technology
At present, with the development of state-of-the-art technology, the requirement more and more higher for material property, hence for composite
Demand it is also more and more extensive because the more single matrix material of composite has more superiority in performance so that composite wood
The application percentage of material in the industrial production increasingly increases, and the compound aluminum steel composite material using cold rolling under room temperature condition extensively should
For the air cooling system in thermoelectricity power station, automobile making, Aero-Space, shipbuilding, engineering machinery and medicine equipment etc.
Field.Extensive use based on aluminum steel composite material, recovery aluminum steel laminar composite are significant：Acquisition can be reclaimed
The single metal material of aluminum steel, in order to secondary use, slow down the pressure to aluminum steel production and demand；And can saves material, section
About cost, caused by reduction metal smelt process the problems such as energy resource consumption, environmental pollution.And due to aluminum steel lamellar composite material
Material, the method for existing separation and recovery aluminum steel laminar composite is complex, inefficient.
The content of the invention
, can be simply and rapidly by this method the invention provides a kind of aluminum steel laminar composite separation and recovery method
The aluminium lamination and steel layer in aluminum steel laminar composite are separated, and then reclaims the single metal material for obtaining aluminum steel laminar composite
Material.
The technical solution adopted in the present invention is：
A kind of aluminum steel laminar composite separation and recovery method, comprises the following steps：Step S1, to aluminum steel lamellar composite material
The aluminum steel combination interface expected into enforcement aluminum steel laminar composite produces the annealing of intermetallic compound, and makes between the metal
The average thickness of compound reaches more than 25um；Step S2, peeling force is imposed to the aluminium lamination and steel layer of aluminum steel laminar composite
Aluminium lamination is set to be separated with steel layer.
In the present invention, moved back by entering to exercise aluminum steel combination interface generation intermetallic compound to aluminum steel laminar composite
Fire processing, when the average thickness of caused intermetallic compound reaches more than 25um, the bond strength of aluminium lamination and steel layer is relatively low,
Less than 8Mpa.In actual experiment, the aluminum steel laminar composite that the average thickness of intermetallic compound reaches more than 25um exists
Stretched fixation or it is light fall during just can successfully realize the separation of aluminium lamination and steel layer, i.e. being averaged in intermetallic compound
When thickness reaches more than 25um, aluminium lamination and steel layer to aluminum steel laminar composite, which impose peeling force, can make aluminium lamination and steel easily
Layer separation.The step of this method, is simple, can rapidly separate aluminium lamination and steel layer in aluminum steel laminar composite, and then reclaim and obtain
Obtain the single metal material of aluminum steel laminar composite, efficient quick.
Also include step S1A between step S1 and step S2：The edge of metallic compound between aluminium lamination and steel layer is struck
Go out crackle mouth.Knock out crackle mouth in metallic compound edge, can provide the point of application to peel off aluminium lamination and steel layer, be easy to aluminium lamination and
The stripping of steel layer.
When being made annealing treatment in the step S1 to aluminum steel laminar composite, annealing temperature is 620 DEG C -640 DEG C.Move back
When fiery temperature is 620 DEG C -640 DEG C, soaking time is within 1 hour, i.e., when aluminum steel laminar composite is right at the corresponding temperature
Soaking time is answered to may be such that the average thickness of intermetallic compound reaches more than 25um when exceeding certain numerical value.The annealing exists
It is not difficult to reach in technique, and average thickness is generated when reaching the insulation needed for 25um intermetallic compound under the annealing process
Between it is short, thus technique is easily realized, good in economic efficiency.
When being made annealing treatment in the step S1 to aluminum steel laminar composite, the used type of cooling is sky of coming out of the stove
It is cold.Technique is simply easily realized.
Had the beneficial effect that caused by the present invention：
Above method step is simply easily realized, can rapidly be separated the aluminium lamination and steel layer in aluminum steel laminar composite, be entered
And the single metal material for obtaining aluminum steel laminar composite is reclaimed, in order to secondary use, slow down to aluminum steel production and demand
Pressure, save material, efficient quick.
Brief description of the drawings
Fig. 1 is the structural representation of aluminum steel laminar composite before not made annealing treatment in the embodiment of the present invention；
Fig. 2 is to generate intermetallic compound after being made annealing treatment in the embodiment of the present invention to aluminum steel laminar composite
Structural representation；
Fig. 3 be the embodiment of the present invention in after the edge of the metallic compound of aluminum steel laminar composite knocks out crackle mouth
Structural representation；
Fig. 4 is by the view after the aluminium lamination of aluminum steel laminar composite and steel layer separation in the embodiment of the present invention；
Fig. 5 is intermetallic compound thickness value and the aluminium lamination and steel layer of aluminum steel laminar composite in the embodiment of the present invention
The graph of a relation of bond strength；
Fig. 6 is thick by annealing soaking time in the embodiment of the present invention and the intermetallic compound generated under corresponding annealing temperature
Angle value graph of a relation；
Fig. 7 is that the metallographic knot after 60min is incubated at aluminum steel laminar composite is 620 DEG C in temperature in the embodiment of the present invention
Composition；
Fig. 8 is that the metallographic knot after 60min is incubated at aluminum steel laminar composite is 625 DEG C in temperature in the embodiment of the present invention
Composition；
Fig. 9 is that the metallographic knot after 45min is incubated at aluminum steel laminar composite is 630 DEG C in temperature in the embodiment of the present invention
Composition；
Figure 10 is that the metallographic after 45min is incubated at aluminum steel laminar composite is 635 DEG C in temperature in the embodiment of the present invention
Structure chart；
Figure 11 is that the metallographic after 30min is incubated at aluminum steel laminar composite is 640 DEG C in temperature in the embodiment of the present invention
Structure chart；
Figure 12 is that the metallographic after 60min is incubated at aluminum steel laminar composite is 615 DEG C in temperature in the embodiment of the present invention
Structure chart；
Reference：1st, aluminium lamination；2nd, steel layer；3rd, intermetallic compound；4th, crackle mouth.
Embodiment
As shown in Figure 1-2, a kind of aluminum steel laminar composite separation and recovery method, comprises the following steps：Step S1, to aluminium
The aluminum steel combination interface that steel laminar composite enters to exercise aluminum steel laminar composite is produced at the annealing of intermetallic compound 3
Reason, and the average thickness of the intermetallic compound 3 is reached more than 25um；Step S2, to the aluminium lamination 1 of aluminum steel laminar composite
Imposing peeling force with steel layer 2 makes aluminium lamination 1 be separated with steel layer 2.
In the present invention, intermetallic compound 3 is produced by entering to exercise aluminum steel combination interface to aluminum steel laminar composite
Annealing, when the average thickness of caused intermetallic compound 3 reaches more than 25um, aluminium lamination 1 and the bond strength of steel layer 2
It is relatively low, less than 8Mpa.In actual experiment, the average thickness of intermetallic compound 3 reaches more than 25um aluminum steel lamellar composite
Material just can smoothly realize the separation of aluminium lamination 1 and steel layer 2 during being fallen in stretched fixation or gently, i.e., in intermetallic
When the average thickness of thing 3 reaches more than 25um, aluminium lamination 1 and steel layer 2 to aluminum steel laminar composite impose peeling force can be light
Easily aluminium lamination 1 is set to be separated with steel layer 2.The step of this method, is simple, can rapidly separate the He of aluminium lamination 1 in aluminum steel laminar composite
Steel layer 2, and then reclaim the single metal material for obtaining aluminum steel laminar composite, efficient quick.
As shown in Figure 3-4, step S1A is also included between step S1 and step S2：Metal between aluminium lamination 1 and steel layer 2
The edge of compound 3 knocks out crackle mouth 4.Crackle mouth 4 is knocked out in the edge of metallic compound 3, can be to peel off aluminium lamination 1 and steel layer 2
The point of application is provided, be more convenient for aluminium lamination 1 and the stripping of steel layer 2.
For aluminum steel laminar composite in annealing process, aluminum steel combination interface occurs that different degrees of diffusion shows
As by suitable control annealing treating process, making combination interface diffusion layer occur, and generate interphase, i.e. intermetallic compound
3.The combination of the thickness of the intermetallic compound 3 and relation of annealing process condition, aluminium lamination 1 and steel layer 2 is obtained below by experiment
Intensity and the relation of the thickness of intermetallic compound 3.
The experimental implementation made annealing treatment to aluminum steel laminar composite is specially：By to aluminum steel laminar composite
To target temperature and certain object time is incubated from room temperature heating 30min, interface is generated certain thickness intermetallic
Thing 3, by metallography microscope sem observation and the thickness value of intermetallic compound 3 is measured, aluminum steel layer is measured by glue peel test
The aluminium lamination 1 of shape composite and the collected values of bond strength of steel layer 2.Fig. 5 is the thickness value of intermetallic compound 3 and aluminum steel lamellar composite material
The graph of a relation of the aluminium lamination 1 of material and the bond strength of steel layer 2, Fig. 6 is by soaking time and the metal that is generated under corresponding annealing temperature
Between the thickness value graph of a relation of compound 3.As shown in Figure 5, it is known that when the average thickness of intermetallic compound 3 reaches more than 25um
(note average thickness values remove maximum and minimum value gained for the mean values of each survey group), the combination of aluminium lamination 1 and steel layer 2 is strong
Degree will be less than 8Mpa.As shown in fig. 6, when annealing treating process reaches following condition：30min is heated to target temperature from room temperature
60min is incubated after 620 DEG C, 30min is heated from room temperature to be incubated 60min after 625 DEG C of target temperature, 30min is heated from room temperature to
After 630 DEG C of target temperature insulation heated more than 45min, from room temperature 30min to be incubated after 635 DEG C of target temperature more than 30min, from
Room temperature heating 30min can reach more than 30min, the average thickness of intermetallic compound 3 to being incubated after 640 DEG C of target temperature
More than 25um, namely its bond strength will be less than 8MPa, can realize easy mechanical stripping., can be in aluminium in removal process
The edge of intermetallic compound 3 on steel laminar composite knocks out certain crackle mouth 4, then imposes upper and lower peeling force i.e.
The separation of aluminum steel layer can successfully be realized.
And the annealing temperature when being made annealing treatment to aluminum steel laminar composite be less than 620 DEG C when, as shown in figure 12,
Figure 12 is that the structure figure after 60min is incubated at aluminum steel laminar composite is 615 DEG C in temperature, makes annealing treatment condition herein
Under, there is intermetallic compound 3 to generate at combination interface, but intermetallic compound 3 is discontinuous and relatively thin, it is difficult to realize aluminum steel layer
Separation.
That is when being made annealing treatment in above-mentioned steps S1 to aluminum steel laminar composite, preferable annealing temperature be 620 DEG C-
640℃.From above-mentioned experiment, when annealing temperature is 620 DEG C -640 DEG C, soaking time is within 1 hour, i.e., when aluminum steel stratiform
Composite corresponds to when soaking time exceedes certain numerical value and may be such that the average thickness of intermetallic compound 3 reaches at the corresponding temperature
To more than 25um, the annealing temperature is not difficult to reach in technique, and generates average thickness under the annealing temperature and reach 25um's
Soaking time needed for intermetallic compound is short, thus technique is easily realized, good in economic efficiency.
When being made annealing treatment in above-mentioned steps S1 to aluminum steel laminar composite, the used type of cooling is sky of coming out of the stove
It is cold.Technique is simply easily realized.
Preferably, the technological parameter made annealing treatment in step S1 to aluminum steel laminar composite is：Annealing temperature is
620 DEG C, it is incubated 60min, air cooling of coming out of the stove.After above-mentioned annealing aluminum steel laminar composite structure figure as shown in fig. 7,
By metallography microscope sem observation and the thickness value of intermetallic compound 3 is measured, sampling obtains following numerical value：
Table 1.IMC thickness values/um (620 DEG C of -60min)
The thickness value of intermetallic compound 3 can be obtained by, which averaging, is more than 25um, you can is realized easily by applying peeling force
The separation of aluminum steel layer.
Preferably, the technological parameter made annealing treatment in step S1 to aluminum steel laminar composite is：Annealing temperature is
625 DEG C, it is incubated 60min, air cooling of coming out of the stove.After above-mentioned annealing aluminum steel laminar composite structure figure as shown in figure 8,
By metallography microscope sem observation and the thickness value of intermetallic compound 3 is measured, sampling obtains following numerical value：
Table 2.IMC thickness values/um (625 DEG C of -60min)
The thickness value of intermetallic compound 3 can be obtained by, which averaging, is more than 25um, you can is realized easily by applying peeling force
The separation of aluminum steel layer.
Preferably, the technological parameter made annealing treatment in step S1 to aluminum steel laminar composite is：Annealing temperature is
630 DEG C, it is incubated more than 45min, air cooling of coming out of the stove.Structure figure such as Fig. 9 of aluminum steel laminar composite after above-mentioned annealing
It is shown, by metallography microscope sem observation and the thickness value of intermetallic compound 3 is measured, sampling obtains following numerical value：
Table 3.IMC thickness values/um (630 DEG C of -45min)
The thickness value of intermetallic compound 3 can be obtained by, which averaging, is more than 25um, you can is realized easily by applying peeling force
The separation of aluminum steel layer.
Preferably, the technological parameter made annealing treatment in step S1 to aluminum steel laminar composite is：Annealing temperature is
635 DEG C, it is incubated more than 30min, air cooling of coming out of the stove.Structure figure such as Figure 10 of aluminum steel laminar composite after above-mentioned annealing
It is shown, by metallography microscope sem observation and the thickness value of intermetallic compound 3 is measured, sampling obtains following numerical value：
Table 4.IMC thickness values/um (635 DEG C of -45min)
The thickness value of intermetallic compound 3 can be obtained by, which averaging, is more than 25um, you can is realized easily by applying peeling force
The separation of aluminum steel layer.
Preferably, the technological parameter made annealing treatment in step S1 to aluminum steel laminar composite is：Annealing temperature is
640 DEG C, it is incubated more than 30min, air cooling of coming out of the stove.Structure figure such as Figure 11 of aluminum steel laminar composite after above-mentioned annealing
It is shown, by metallography microscope sem observation and the thickness value of intermetallic compound 3 is measured, sampling obtains following numerical value：
Table 5.IMC thickness values/um (640 DEG C of -30min)
The thickness value of intermetallic compound 3 can be obtained by, which averaging, is more than 25um, you can is realized easily by applying peeling force
The separation of aluminum steel layer.
It should be noted that Fig. 7-12 is simply when aluminum steel laminar composite corresponds to insulation more than a timing in relevant temperature
Between selected wherein width structure figure when being worth, be only signal effect, asked in the thickness value for measuring intermetallic compound 3
When average value is to obtain the thickness value of intermetallic compound, the data of measurement are not only directly to be obtained by Fig. 7-12,
The measurement data of other multigroup structure figures also under respective conditions so that the thickness value of obtained intermetallic compound is more accurate
Really.
The present invention realizes aluminum steel by controlling annealing factor (temperature and time) easily controllable in production practices
The separation and recovery of laminar composite, by experimental studies have found that, change when between the metal generated between aluminum steel laminar composite
When the thickness of compound 3 is more than 25um, the bond strength of aluminum steel laminar composite is less than 8Mpa, then the discovery is applied into aluminum steel layer
In the separation and recovery of shape composite so that the separation and recovery of aluminum steel laminar composite is more convenient easily, can rapidly separate
Aluminium lamination and steel layer in aluminum steel laminar composite, and then the single metal material for obtaining aluminum steel laminar composite is reclaimed, with
It is easy to secondary use, slows down the pressure to aluminum steel production and demand, save material, efficient quick.
Above-listed detailed description is illustrating for one of present invention possible embodiments, and the embodiment simultaneously is not used to limit
The scope of the claims of the present invention, all equivalence enforcements or change without departing from carried out by the present invention, it is intended to be limited solely by the scope of the claims of this case
In.
Claims (3)
- A kind of 1. aluminum steel laminar composite separation and recovery method, it is characterised in that：Comprise the following steps：Step S1, aluminum steel laminar composite is entered to exercise aluminum steel laminar composite aluminum steel combination interface produce metal change The annealing of compound, and the average thickness of the intermetallic compound is reached more than 25 μm；The annealing temperature be 620 DEG C- 640 DEG C, soaking time is less than 1h；The time that the annealing temperature is heated to from room temperature is 30min；Step S2, imposing peeling force to aluminium lamination and the steel layer of aluminum steel laminar composite makes aluminium lamination be separated with steel layer；The stripping Power is less than 8MPa.
- 2. aluminum steel laminar composite separation and recovery method according to claim 1, it is characterised in that：The step S1 with Also include step S1A between step S2：The edge of metallic compound between aluminium lamination and steel layer knocks out crackle mouth.
- 3. aluminum steel laminar composite separation and recovery method according to claim 1 or 2, it is characterised in that：The step When being made annealing treatment in S1 to aluminum steel laminar composite, the used type of cooling is air cooling of coming out of the stove.
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Effective date of registration: 20230505 Address after: 235099 South of Zhuzhuang Road and East of Tangshan Road, High tech Zone, Huaibei City, Anhui Province Patentee after: Yinbang (Anhui) New Energy Materials Technology Co.,Ltd. Address before: Building 414, Guanggong Experimental Building 2, No. 100 Outer Ring West Road, University City, Guangzhou, Guangdong Province, 510006 Patentee before: GUANGDONG University OF TECHNOLOGY |