CN104032346B - High-efficient aluminium alloy section bar oxidation unit and aluminium alloy extrusions frosting technology - Google Patents
High-efficient aluminium alloy section bar oxidation unit and aluminium alloy extrusions frosting technology Download PDFInfo
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- CN104032346B CN104032346B CN201410244397.9A CN201410244397A CN104032346B CN 104032346 B CN104032346 B CN 104032346B CN 201410244397 A CN201410244397 A CN 201410244397A CN 104032346 B CN104032346 B CN 104032346B
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Abstract
The present invention relates to high-efficient aluminium alloy section bar oxidation unit and aluminium alloy extrusions frosting technology, this oxidation unit includes cell body, negative electrode electric installation, anode conducting device and electrolyte configured slot, the trough rim end face of cell body has equally distributed recess, negative electrode electric installation is by recess and cell body clamping, the base plate cross section of cell body is spill, and concave central position is vertically installed with leads to electrolyte configured slot discharging tube；Anode conducting device in pairs and is respectively fixedly disposed at two opposed inner walls of cell body, anode conducting device is that the two-part that is bolted can bending structure, the bottom of electrolyte configured slot is inclined structure, and the bottom lowest part of electrolyte configured slot is provided with waste liquid outlet and leads to the pump housing of cell body.Gained is applicable to anodic oxidation device and the frosting technology of piping aluminium alloy extrusions, and electric conductivity is good, can improve the concordance of piping Surface Quality of Aluminum Alloy Profiles, reduces waste of raw materials, improves electrolyte utilization rate, is suitable for large-scale promotion application.
Description
Technical field
The present invention relates to piping aluminium alloy extrusions processing technique field, particularly a kind of high-efficient aluminium alloy section bar oxygen
Gasifying device and aluminium alloy extrusions frosting technology.
Background technology
Modern society's decoration door and window or curtain wall mainly use aluminium alloy section structure material, the master of this section bar
If outward appearance is single and is chronically exposed in air and holds corrosion-prone shortcoming, the existence of this shortcoming makes it more
More it is difficult to the individual demand meeting Contemporary young user for decoration structural material.Close to optimize aluminum
The decorative effect of metal type material, strengthening its corrosion resistance and increase the service life, aluminium alloy extrusions typically will enter
Row surface processes.It is that aluminium alloy extrusions perfection squeezes body and in the China of modern society that the surface of aluminium alloy extrusions processes
Beautiful turning round, the method that conventional aluminium alloy section surface processes is anodizing, can by anodizing
Forming dense oxidation film at aluminium alloy section surface, the existence of this oxide-film can significantly improve aluminium alloy extrusions
Corrosion resistance, wearability and decoration performance.
The anode oxidative treatment method being applied to aluminium alloy extrusions in prior art refers to: at certain electrolyte
In, with aluminium alloy extrusions part as anode, with rustless steel or aluminum metal as negative electrode, at highly acid electrolytic solution
The middle process that aluminium alloy extrusions is carried out surface process.But in prior art, each manufacturer is conducted electricity at negative electrode
Device and arranging of anode conducting device are different from, and the oxidation for different types of aluminium alloy extrusions fills
The setting put also differs, thus cause on market occur aluminium alloy extrusions surface quality irregular not
Together, it is increasingly difficult to meet the consumption demand of consumer, additionally the arranging for electrolyte of oxidation unit
Process is substantially directly discharge, easily causes environmental pollution.Therefore, research one is applicable to piping aluminium alloy
The anodic oxidation device of section bar is problem to be studied.
Summary of the invention
The technical problem to be solved is: overcome deficiency of the prior art, it is provided that one is applicable to
The anodic oxidation device of piping aluminium alloy extrusions and aluminium alloy extrusions frosting technology, this device electric conductivity is good
Good, oxidation technology on its basis can significantly unify and improve the surface quality of aluminium alloy extrusions.
The technical solution adopted for the present invention to solve the technical problems is: a kind of high-efficient aluminium alloy section bar oxidation dress
Putting, this oxidation unit includes cell body, negative electrode electric installation, anode conducting device and electrolyte configured slot,
The trough rim end face of described cell body has equally distributed recess, and negative electrode electric installation passes through recess and electrolysis
Cell body clamping, the base plate cross section of cell body is spill, and concave central position is vertically installed with leads to electrolyte
Configured slot discharging tube；
The making material of described negative electrode electric installation is lead, and negative electrode electric installation is Z-type structure, Z-type structure
Adjacent edge composition angle be 90 °, the outer wall of Z-type structure front end is enclosed with insulating barrier；Described anode conducting
Device in pairs and is respectively fixedly disposed at two opposed inner walls of cell body, and anode conducting device is for passing through bolt
Connect two-part can bending structure, the front end of anode conducting device is the bullet that diameter is gradually reduced；Institute
The bottom stating electrolyte configured slot is inclined structure, particularly as follows: be partial to relatively by the side of electrolyte configured slot
Side, the bottom lowest part of electrolyte configured slot is provided with waste liquid outlet and lead to the pump housing of cell body.
Further, described discharging tube upper end is provided with valve, for preventing chemical agent from forming dead angle in groove,
The inwall turning of cell body is fillet structure, and in Z-type structure, wire and power cathode are passed through in the front end of horizontal edge
Connect.
Further, for improving cell body production efficiency, the logarithm of described anode conducting device is at least one pair of.
Further, described in pairs and be respectively fixedly disposed at the anode conducting in two opposed inner walls of cell body
The end of device is connected externally in cell body by wire.
Further, for preventing cell body superheating phenomenon in process of production or cell body from senilism phenomenon occurring, described
The 1.5-3 that vertical dimension is Z-type structure vertical edge thickness of the trough rim of Z-type structure vertical edge and Z-type structure clamping
Times, the height of Z-type structure is less than the height of cell body inwall；Horizontal edge and electrolysis bath under described Z-type structure
Between the bottom of internal wall, there is space.
Further, for convenience of the waste liquid in electrolyte configured slot is directly discharged or the re-using of pure solution,
Being provided with valve between bottom lowest part and the pump housing of described electrolyte configured slot, waste liquid outlet is provided with valve
Door.
The frosting technology of a kind of aluminium alloy extrusions, uses above-mentioned high-efficient aluminium alloy section bar oxidation unit, this frosted
Technique has following steps:
A. self-inspection is added
Aluminium alloy extrusions is carried out surface examination, records same batch each section bar surface flatness, defect, hair
The two ends of aluminium alloy extrusions, after record, are respectively installed to the anode of oxidation unit by thorn and aberration level
On electric installation；
Further, for ensureing production safety, it is that 1 Wan An training cell body every groove dress fine dried noodles amass as 60-70
Good, special circumstances must not exceed 60, and 1.2 Wan An training cell body every groove dress fine dried noodles amass as 70-90.
B. oil removing washing
Degreaser is injected in cell body, at normal temperatures aluminium alloy section surface is carried out oil removing, described remove
The composition of oil preparation is the sulfuric acid solution of 150-200g/L, washs to Surface of profile with clear water after processing 2-8min
PH be 4-7, degreaser and washes are discharged；
Further, in particular cases greasy dirt depending on Surface of profile processes the time surely.
C. sand face processes
Sand face processes and uses aciding or alkaline etching method, and the specific practice of aciding is: confection is injected electricity
Solve in cell body, carry out aluminium alloy section surface when 35-45 DEG C processing 5-10min, then wash with clear water
PH to Surface of profile is 5-7, confection and washes is discharged；The pH value of described confection is
3.0-3.5, confection includes that etching agent that concentration is 8-10g/L and F concentration are the fluorination of 30-40g/L
Hydrogen ammonium, wherein, etching agent be two acid intermixtures or three acid intermixtures, two acid intermixtures be concentration be 55-65g/L
Phosphoric acid and sulphuric acid that concentration is 9-12g/L obtain according to mass ratio 30:70 configuration, three sour intermixtures are dense
Degree for sulphuric acid that the phosphoric acid of 55-65g/L, concentration are 9-12g/L and nitric acid that concentration is 4-5.5g/L according to
Mass ratio (70-80): (15-20): (5-10) configures and obtain；
The specific practice of alkaline etching method is: alkaline etching agent is injected in cell body, carries out aluminium alloy section surface
Alkaline etching, described alkaline etching agent includes two kinds, a kind of be concentration be sodium hydroxide solution and the 20-40g/L of 40-65g/L
Sour sand, treatment temperature is 45-55 DEG C, and the process time is 2-5min, another kind be concentration be 40-65g/L
Sodium hydroxide solution and the alkali sand of 40-80g/L, treatment temperature is 45-70 DEG C, and the process time is 8-15min,
The pH using any one alkaline etching agent above-mentioned to process after 2-8min with clear water washing to Surface of profile is 6-8, will
Alkaline etching agent and washes are discharged；
D. light washing is neutralized out
Neutralization reagent is injected in cell body, at normal temperatures aluminium alloy section surface is neutralized technique,
Described neutralization reagent is that concentration is the sulphuric acid of 180-200g/L or concentration is the nitric acid of 140-180g/L, processes
After 2-4min, the pH with clear water washing to Surface of profile is 3-5, neutralization reagent and washes is discharged；
Light reagent will be gone out inject in cell body, at normal temperatures aluminium alloy section surface will be gone out light technique,
Described go out light reagent be concentration be the nitric acid of 200-280g/L, process and wash to section bar with clear water after 2-4min
The pH on surface is 5-7, will go out light reagent and washes is discharged；
E. anodic oxidation washing
This step is a kind of water white film of the Surface Creation to goods, prevents the surface corrosion of material, film
The thickness of layer is that the demand according to client is adjusted, and thickness is formed generally by electric current density, voltage, tank liquor
Concentration and the impact of temperature；
Inject the electrolyte in cell body, when temperature is 20 ± 2 DEG C, aluminium alloy section surface is carried out oxygen
Metallization processes, described electrolyte is sulfuric acid solution and the aluminium ion composition of≤20g/L of 130-160g/L, processes
PH with clear water washing to Surface of profile is 5-7 afterwards, electrolyte and washes is discharged, processes time root
Depending on thickness, electric current density and the formula L=I T K of required oxide-film, wherein, the L in formula is oxygen
Changing film micron thickness, K is constant 0.28-0.3, and I is electric current density A/m2, T is oxidation the number of minutes；
After dress extension areal calculation is accurate, just can try to achieve the oxidization time needed for any thickness of oxidation film from above-mentioned formula；
Aluminium alloy extrusions should be avoided being immersed in for a long time in tank before anodic oxidation, and maximum duration is less than 3min, with
Exempt from the acid etch Surface of profile in tank；Through anodised product, in groove, residence time is less than
5min, prevents from affecting the quality of oxide-film；Requiring the bright product that brightness is high, electric current density selects 1-1.2
A/dm2It is advisable.
F. sealing of hole washing and drying
Pore-sealing liquid is injected in cell body, when temperature is 25 ± 2 DEG C, aluminium alloy section surface is sealed
Hole technique, described pore-sealing liquid is by the nickel ion that concentration is 0.8-1.5g/L and the fluorion group of 0.3-0.65g/L
Becoming, the pH value of pore-sealing liquid is 5.5-6.5, depending on the hole-sealing technology process time is according to the thickness of oxide-film, often
Individual film sealing of hole 1 minute, after being disposed, the pH with clear water washing to Surface of profile is 5-7.5, by pore-sealing liquid
And washes discharge, treat that aluminium alloy section surface is dried；
G. undercarriage test package
Aluminium alloy extrusions is taken off from anode conducting device, packaging warehouse-in after inspection record.
Undercarriage should be handled with care, notices that anti-damage, anti-collision deform, distance undercarriage 3m, is not allow for section bar
Touch wound sound, the length solarization bin can being placed on place processing directly packaging without finishing mandrel more than 4m
On, do not dry on the solarization bin that the product of (drip-dry) is placed on place；Product needed walks processing under making, and
Ask and first process then being placed on " chassis " by product of packing afterwards.
Beneficial effect: in technical scheme, the bottom lowest part of electrolyte configured slot is provided with waste liquid
Outlet and the setting of the pump housing leading to cell body, be effectively reduced the direct emission index of electrolyte, improve
The secondary utilization rate of electrolyte；The bottom that base plate cross section is spill and electrolyte configured slot of cell body is oblique
The setting of formula structure, can be effectively improved the rate of discharge of electrolyte；Negative electrode electric installation passes through recess and electrolysis
Cell body clamping and the setting of insulating barrier, can be effectively improved the overall security of this device；Anode conducting device becomes
To and be respectively fixedly disposed at two opposed inner walls of cell body, anode conducting device is be bolted
Two-part can the setting of bending structure, installation and the dismounting of tubular type aluminium alloy extrusions, beneficially aluminum can be facilitated to close
Metal type material aoxidizes in homogeneous electrolyte；The front end of anode conducting device is the bullet that diameter is gradually reduced
Setting, the contact area of anode conducting device and aluminium alloy extrusions to be oxidized can be reduced, thus effectively subtract
Few later stage percent defective.
Use the anodic oxidation device being applicable to piping aluminium alloy extrusions of technical scheme gained, lead
Electrical property is good, can be effectively improved the concordance of piping Surface Quality of Aluminum Alloy Profiles, effectively reduce raw material
Waste, improves electrolyte effective rate of utilization, is suitable for large-scale promotion application.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings；
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the A-A profile in Fig. 1；
Fig. 3 is the B-B profile of Fig. 1；
1. cell body in figure, 11. discharging tubes, 2. negative electrode electric installation, 21. insulating barriers, 3. sun
Pole electric installation, 4. electrolyte configured slot, 41. pump housings, 42. waste liquid outlets.
Detailed description of the invention
Presently in connection with accompanying drawing, the present invention is further illustrated.These accompanying drawings be the schematic diagram of simplification only with
The basic structure of the illustration explanation present invention, therefore it only shows the composition relevant with the present invention.
A kind of high-efficient aluminium alloy section bar oxidation unit as shown in Figure 1, 2, 3, this anodic oxidation device includes
Cell body 1, negative electrode electric installation 2, anode conducting device 3 and electrolyte configured slot 4, cell body 1
Trough rim end face there is equally distributed recess, negative electrode electric installation 2 by recess and cell body 1 clamping,
The base plate cross section of cell body 1 is spill, and concave central position is vertically installed with leads to electrolyte configured slot 4
Discharging tube 11；Negative electrode electric installation 2 is Z-type structure, and the angle of the adjacent edge composition of Z-type structure is 90 °,
The outer wall of Z-type structure front end is enclosed with insulating barrier 21；Described anode conducting device 3 is fixed in pairs and respectively and is set
Putting two opposed inner walls in cell body 1, anode conducting device 3 is that the two-part being bolted can be rolled over
Kinking structure, the front end of anode conducting device 3 is the bullet that diameter is gradually reduced；Electrolyte configured slot (4)
Bottom be inclined structure, particularly as follows: be partial to relative side, electrolysis by the side of electrolyte configured slot 4
The bottom lowest part of liquid configured slot 4 is provided with waste liquid outlet 42 and leads to the pump housing 41 of cell body 1.
Discharging tube 11 upper end is provided with valve, and the inwall turning of cell body 1 is fillet structure.Z-type structure
The front end of upper horizontal edge is connected with power cathode by wire.The logarithm of anode conducting device 3 is three right, in pairs
And the end of the anode conducting device 3 being respectively fixedly disposed in two opposed inner walls of cell body 1 is by leading
Line is connected externally in cell body 1.
Vertical dimension is Z-type structure vertical edge thickness the 1.5 of the trough rim of Z-type structure vertical edge and Z-type structure clamping
Times, the height of Z-type structure is less than the height of cell body 1 inwall, horizontal edge and cell body 1 under Z-type structure
There is between the bottom of inwall space, be provided with between bottom lowest part and the pump housing 41 of electrolyte configured slot 4
Valve, waste liquid outlet 42 is provided with valve, and the making material of negative electrode electric installation 3 is lead.
The frosting technology of a kind of aluminium alloy extrusions, uses above-mentioned high-efficient aluminium alloy section bar oxidation unit, this frosted
Technique has following steps:
A. self-inspection is added
Aluminium alloy extrusions is carried out surface examination, records same batch each section bar surface flatness, defect, hair
The two ends of aluminium alloy extrusions, after record, are respectively installed to the anode of oxidation unit by thorn and aberration level
On electric installation 3；For ensureing production safety, 1 Wan An training cell body 1 every groove dress fine dried noodles amass as 60-70
For most preferably, special circumstances must not exceed 60, and 1.2 Wan An training cell body 1 every groove dress fine dried noodles amass as 70-90
㎡。
B. oil removing washing
Degreaser is injected in cell body 1, at normal temperatures aluminium alloy section surface is carried out oil removing, described
The composition of degreaser is the sulfuric acid solution of 200g/L, washs the pH to Surface of profile with clear water after processing 8min
For 4-7, degreaser and washes are discharged；
C. sand face processes
Sand face processes and uses alkaline etching method, and specific practice is: alkaline etching agent is injected in cell body 1, closes aluminum
Gold Surface of profile carry out alkaline etching, described alkaline etching agent includes two kinds, a kind of be concentration be the hydroxide of 40-65g/L
Sodium solution and the sour sand of 20-40g/L, treatment temperature is 45-55 DEG C, and the process time is 2-5min, another kind of
Be concentration be sodium hydroxide solution and the alkali sand of 40-80g/L of 40-65g/L, treatment temperature is 45-70 DEG C,
The process time is 8-15min, uses any one alkaline etching agent above-mentioned to process, and uses clear water after processing 8min
Washing is 6-8 to the pH of Surface of profile, alkaline etching agent and washes is discharged；
D. light washing is neutralized out
Neutralization reagent is injected in cell body 1, at normal temperatures aluminium alloy section surface is neutralized technique,
Described neutralization reagent is that concentration is the sulphuric acid of 200g/L or concentration is the nitric acid of 180g/L, uses after processing 4min
Clear water washing is 3-5 to the pH of Surface of profile, neutralization reagent and washes is discharged；
Light reagent will be gone out inject in cell body 1, at normal temperatures aluminium alloy section surface will be gone out light technique,
Described go out light reagent be concentration be the nitric acid of 280g/L, process and wash to Surface of profile with clear water after 4min
PH is 5-7, will go out light reagent and washes is discharged；
E. anodic oxidation washing
This step is a kind of water white film of the Surface Creation to goods, prevents the surface corrosion of material, film
The thickness of layer is that the demand according to client is adjusted, and thickness is formed generally by electric current density, voltage, tank liquor
Concentration and the impact of temperature；Inject the electrolyte in cell body 1, when temperature is 20 ± 2 DEG C, aluminum is closed
Gold Surface of profile carries out oxidation technology, described electrolyte be the sulfuric acid solution of 160g/L and the≤aluminum of 20g/L from
Son composition, after process, the pH with clear water washing to Surface of profile is 5-7, electrolyte and washes is arranged
Go out, depending on the time that processes is according to thickness, electric current density and the formula L=I T K of required oxide-film, wherein,
L in formula is oxide-film micron thickness, and K is constant 0.28-0.3, and I is electric current density A/m2, T is oxygen
Change the number of minutes；After dress extension areal calculation is accurate, just can try to achieve the oxygen needed for any thickness of oxidation film from above-mentioned formula
The change time；Aluminium alloy extrusions should be avoided being immersed in for a long time in tank before anodic oxidation, and maximum duration is less than
3min, in order to avoid the acid etch Surface of profile in tank；Through anodised product, stop in groove time
Between less than 5min, prevent from affecting the quality of oxide-film；Require the bright product that brightness is high, electric current density
Select 1-1.2A/dm2It is advisable.
F. sealing of hole washing and drying
Pore-sealing liquid is injected in cell body 1, when temperature is 25 ± 2 DEG C, aluminium alloy section surface is carried out
Hole-sealing technology, described pore-sealing liquid is made up of the fluorion of the nickel ion that concentration is 1.5g/L and 0.65g/L, envelope
The pH value of hole liquid is 5.5-6.5, and depending on the hole-sealing technology process time is according to the thickness of oxide-film, each film seals
1 minute, hole, after being disposed, the pH with clear water washing to Surface of profile is 5-7.5, by pore-sealing liquid and washing
Waste water is discharged, and treats that aluminium alloy section surface is dried；
G. undercarriage test package
Aluminium alloy extrusions is taken off from anode conducting device 3, packaging warehouse-in after inspection record.Undercarriage should be light
Taking and put down gently, notice that anti-damage, anti-collision deform, distance undercarriage 3m, be not allow for section bar touches wound sound, length
Degree processing on the solarization bin can being placed on place of directly packaging without finishing mandrel more than 4m, does not dries and (drips
Dry) the solarization bin that is placed on place of product on；Product needed walks processing under making, it is desirable to first processes and packs afterwards
Then product is placed on " chassis ".
Above-mentioned detailed description of the invention, only for technology design and the feature of the explanation present invention, its object is to allow familiar
The personage of technique will appreciate that present disclosure and is carried out, and can not limit the present invention's with this
Protection domain, all equivalence changes made according to spirit of the invention or modification, all should contain in the present invention
Protection domain in.
Claims (7)
1. a high-efficient aluminium alloy section bar oxidation unit, it is characterised in that: this oxidation unit includes cell body
(1), negative electrode electric installation (2), anode conducting device (3) and electrolyte configured slot (4), described electrolysis
The trough rim end face of cell body (1) has equally distributed recess, and negative electrode electric installation (2) is by recess and electricity
Solving cell body (1) clamping, the base plate cross section of cell body (1) is spill, and concave central position is vertically arranged
Have and lead to electrolyte configured slot (4) discharging tube (11)；
Described negative electrode electric installation (2) is Z-type structure, and the angle of the adjacent edge composition of Z-type structure is 90 °,
The outer wall of Z-type structure front end is enclosed with insulating barrier (21)；Described anode conducting device (3) in pairs and is distinguished
Being fixedly installed on two opposed inner walls of cell body (1), anode conducting device (3) is for being bolted
Two-part can bending structure, the front end of anode conducting device (3) is the bullet that diameter is gradually reduced；Institute
The bottom stating electrolyte configured slot (4) is inclined structure, and the bottom lowest part of electrolyte configured slot (4) sets
It is equipped with waste liquid outlet (42) and leads to the pump housing (41) of cell body (1)；
Between the bottom of horizontal edge and cell body (1) inwall, there is space under described Z-type structure；
It is provided with valve, waste liquid between bottom lowest part and the pump housing (41) of described electrolyte configured slot (4)
Outlet (42) is provided with valve.
High-efficient aluminium alloy section bar oxidation unit the most according to claim 1, it is characterised in that: described row
Liquid pipe (11) upper end is provided with valve, and the inwall turning of cell body (1) is fillet structure.
High-efficient aluminium alloy section bar oxidation unit the most according to claim 1, it is characterised in that: described sun
The logarithm of pole electric installation (3) is at least one pair of.
High-efficient aluminium alloy section bar oxidation unit the most according to claim 1, it is characterised in that: described one-tenth
To and the end of anode conducting device (3) that is respectively fixedly disposed in two opposed inner walls of cell body (1)
End is connected externally in cell body (1) by wire.
High-efficient aluminium alloy section bar oxidation unit the most according to claim 1, it is characterised in that: described Z
1.5-3 times that vertical dimension is Z-type structure vertical edge thickness of the trough rim of type structure vertical edge and Z-type structure clamping.
High-efficient aluminium alloy section bar oxidation unit the most according to claim 1, it is characterised in that: described Z
The height of type structure is less than the height of cell body (1) inwall.
7. the frosting technology of an aluminium alloy extrusions, it is characterised in that: use any one of claim 1-6 institute
The high-efficient aluminium alloy section bar oxidation unit stated, this frosting technology has following steps:
A. self-inspection is added
Aluminium alloy extrusions is carried out surface examination, records same batch each section bar surface flatness, defect, hair
The two ends of aluminium alloy extrusions, after record, are respectively installed to the anode of oxidation unit by thorn and aberration level
On electric installation (3)；
B. oil removing washing
Degreaser is injected in cell body (1), at normal temperatures aluminium alloy section surface is carried out oil removing, institute
State the sulfuric acid solution that composition is 150-200g/L of degreaser, wash to section bar with clear water after processing 2-8min
The pH on surface is 4-7, degreaser and washes is discharged；
C. sand face processes
Sand face processes and uses aciding, and the specific practice of aciding is: confection injects cell body (1)
In, aluminium alloy section surface carries out when 35-45 DEG C processing 5-10min, then washs to section bar with clear water
The pH on surface is 5-7, confection and washes is discharged；The pH value of described confection is 3.0-3.5,
Confection includes that etching agent that concentration is 8-10g/L and F concentration are the ammonium acid fluoride of 30-40g/L, wherein,
Etching agent is two acid intermixtures or three acid intermixtures, two acid intermixtures be concentration be the phosphoric acid of 55-65g/L and dense
Degree is that the sulphuric acid of 9-12g/L obtain according to mass ratio 30:70 configuration, three sour intermixtures be concentration be 55-65g/L
Phosphoric acid, concentration be the sulphuric acid of 9-12g/L and nitric acid that concentration is 4-5.5g/L according to mass ratio (70-80):
(15-20): (5-10) configures and obtain；
D. light washing is neutralized out
Neutralization reagent is injected in cell body (1), at normal temperatures aluminium alloy section surface is neutralized work
Skill, described neutralization reagent is that concentration is the sulphuric acid of 180-200g/L or concentration is the nitric acid of 140-180g/L,
After process 2-4min, the pH with clear water washing to Surface of profile is 3-5, neutralization reagent and washes is discharged；
Light reagent will be gone out inject in cell body (1), at normal temperatures aluminium alloy section surface will be gone out light work
Skill, described in go out light reagent be concentration be the nitric acid of 200-280g/L, process and wash extremely with clear water after 2-4min
The pH of Surface of profile is 5-7, will go out light reagent and washes is discharged；
E. anodic oxidation washing
Inject the electrolyte in cell body (1), when temperature is 20 ± 2 DEG C, to aluminium alloy section surface
Carrying out oxidation technology, described electrolyte is sulfuric acid solution and the aluminium ion composition of≤20g/L of 130-160g/L,
After process, the pH with clear water washing to Surface of profile is 5-7, electrolyte and washes is discharged, during process
Between according to thickness, electric current density and the formula L=I T K of required oxide-film depending on, wherein, the L in formula
For oxide-film micron thickness, K is constant 0.28-0.3, and I is electric current density A/m2, T is oxidation the number of minutes；
F. sealing of hole washing and drying
Pore-sealing liquid is injected in cell body (1), when temperature is 25 ± 2 DEG C, to aluminium alloy section surface
Carrying out hole-sealing technology, described pore-sealing liquid is by the nickel ion that concentration is 0.8-1.5g/L and the fluorine of 0.3-0.65g/L
Ion forms, and the pH value of pore-sealing liquid is 5.5-6.5, and hole-sealing technology processes the time according to the thickness of oxide-film
Fixed, after being disposed, the pH with clear water washing to Surface of profile is 5-7.5, pore-sealing liquid and washes is arranged
Go out, treat that aluminium alloy section surface is dried；
G. undercarriage test package
Aluminium alloy extrusions is taken off from anode conducting device (3), packaging warehouse-in after inspection record.
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| CN105274545B (en) * | 2015-11-25 | 2017-10-20 | 天津航空机电有限公司 | A kind of plating of aluminium alloy or the pre-treating method of chemical plating and application thereof |
| CN110079848B (en) * | 2019-04-28 | 2021-02-23 | 安徽华淮新材料有限公司 | Aluminum alloy chemical coarse sand surface treatment method |
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| CN103046098A (en) * | 2012-12-31 | 2013-04-17 | 张家港市金邦铝业有限公司 | Aluminium alloy anode oxidation device |
| CN203411627U (en) * | 2013-07-31 | 2014-01-29 | 珠海蓝冠电子科技有限公司 | Aluminum alloy anodic oxidation device |
| CN203890468U (en) * | 2014-06-04 | 2014-10-22 | 张家港市金邦铝业有限公司 | High-efficiency aluminum profile oxidation tank |
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