CN107502766A - A kind of production method of heat-tinting electrophoretic coating aluminium alloy extrusions - Google Patents

A kind of production method of heat-tinting electrophoretic coating aluminium alloy extrusions Download PDF

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CN107502766A
CN107502766A CN201710602558.0A CN201710602558A CN107502766A CN 107502766 A CN107502766 A CN 107502766A CN 201710602558 A CN201710602558 A CN 201710602558A CN 107502766 A CN107502766 A CN 107502766A
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aluminium alloy
alloy extrusions
tinting
heat
incubated
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杨昌清
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YUN'NAN SANYUANDELONG ALUMINUM INDUSTRY Co Ltd
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YUN'NAN SANYUANDELONG ALUMINUM INDUSTRY Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/03—Making non-ferrous alloys by melting using master alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/026—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/10—Alloys based on aluminium with zinc as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C25D11/10—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process
    • C25D13/04—Electrophoretic coating characterised by the process with organic material

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention discloses a kind of production method of heat-tinting electrophoretic coating aluminium alloy extrusions, its processing step includes：First by following mass percent dispensing:Silicon 0.2~3%, magnesium 0.5~2%, iron 0.2~1%, copper 0.02~0.5%, manganese 0.05~0.1%, zinc 2.0~3.5%, zirconium 0.02~0.09%, chromium 0.1~0.2%, titanium 0.1~0.65%, nichrome 0.2~0.5%, remaining is that aluminium adds melting in smelting furnace and obtains pure refining liquation after refining；Then refining liquation is cast into aluminium bar, now again by aluminium bar high temperature extrusion into aluminium alloy extrusions, finally by after aluminium alloy extrusions cooling and heat-tinting processing, is put into electrophoretic coating in the electrophoresis tank equipped with electrophoretic paint and can obtain finished product.The simple production process of the present invention, technological requirement readily satisfies, and not only face coat is uniformly, the adhesive force of coating is strong, glossiness is good for the aluminium alloy extrusions produced, and improves the corrosion resistance and against weather of product, long-term use of coating does not fade, not fallen off, use easy to spread.

Description

A kind of production method of heat-tinting electrophoretic coating aluminium alloy extrusions
Technical field
The invention belongs to construction material production technical field, and in particular to a kind of heat-tinting electrophoretic coating aluminium alloy extrusions Production method.
Background technology
The characteristics of aluminium alloy extrusions is because of its high intensity and its high rigidity, in building decoration, decoration industry, people's extensive use Aluminium alloy extrusions makes window, door and various cut-offs, and aluminium alloy extrusions is also with its light, attractive in appearance, fire prevention and extensively by user's Like.Aluminium alloy extrusions is aluminium bar by heating, extruding and process of surface treatment is made, and process of surface treatment includes aoxidizing, When color and Seal treatment, this aluminium alloy extrusions are long-term use of out of doors, particularly in acid rain or marine environment when, it is easily rotten Erosion, poor durability, therefore, since the beginning of the 1970s, people attempt with the method for paint spraying come improve aluminium alloy dicoration and Service life.At present, industrialized successfully use have electrophoretic coating, powder coating and fluorocarbon-sprayed, due to electrophoretic coating Water paint, aluminium after pre-treatment is washed can direct electrophoresis, electrophoretic coating transparency is high, not only with high-decoration but also can be with The metallic luster of prominent aluminium section bar in itself, therefore use electrophoretic painting more and more on architectural shape.Electrophoresis is similar Plating, workpiece are put in the electrolytic solution, and dc source both ends are connected on respectively with another electrode in electrolyte, form electrolytic circuit, electricity Coating of the liquid for conductive water solubility or water emulsification is solved, the cation dissociated in coating solution is under electric power field action to the moon Ghandler motion moves, and the anion Ghandler motion that faces south moves, these powered resin ions, connect adsorbed pigment particles together electrophoresis to workpiece Surface simultaneously loses electric charge and forms wet coating, and this process is referred to as electrophoresis, existing electrophoretic coating technique, its complex procedures, life It is higher to produce cost, simultaneously because being limited by production technology, using aluminium alloy extrusions made of traditional processing technology, often occurs Coating became uneven, spreadability are poor, low in glossiness, influence presentation quality, and using after a period of time, aluminium alloy section surface holds Easily damaged, the deficiencies of its is easy to wear, oxidizable, is still fairly obvious.Therefore, it is necessary to develop a kind of energy-conserving and environment-protective, be produced into This low, coating uniform, glossiness is high, using effect is good and high-wearing feature, inoxidizability and weather-resistant property significantly aoxidize The production method of color electrophoretic coating aluminium alloy extrusions is desirability.
The content of the invention
In order to solve problem present in background technology, it is an object of the invention to provide a kind of energy-conserving and environment-protective, it is produced into This low, coating uniform, glossiness is high, using effect is good and high-wearing feature, inoxidizability and weather-resistant property significantly aoxidize The production method of color electrophoretic coating aluminium alloy extrusions.
A kind of production method of heat-tinting electrophoretic coating aluminium alloy extrusions, is comprised the following steps that：
1. dispensing is chosen:According to mass percent dispensing:Silicon 0.2~3%, magnesium 0.5~2%, iron 0.2~1%, copper 0.02~0.5%, Manganese 0.05~0.1%, zinc 2.0~3.5%, zirconium 0.02~0.09%, chromium 0.1~0.2%, titanium 0.1~0.65%, nichrome 0.2~ 0.5%, remaining is aluminium；
2. prepare aluminium alloy melt：Smelting furnace is preheated, 200~250 DEG C are to slowly warm up in 1h, and is incubated 5h, then will Step 1. in dispensing be added in smelting furnace, 700~800 DEG C are warming up in 1~3h, until smelting furnace in dispensing it is complete Fusing；
3. refine：After the dispensing in smelting furnace is completely melt, then control smelting temperature carries out slagging-off work at 710~720 DEG C Make, remove the scum silica frost on furnace charge surface, and furnace charge is slowly stirred in 5min, release furnace interior divides hydrogen, then in smelting furnace Spelter is added, MAG block is added in smelting furnace again in 5~10min after spelter dissolves completely, is slowly stirred, it is ensured that MAG block After fusing completely, in-furnace temperature is increased to 730~750 DEG C, refining agent is finally added in smelting furnace, and be passed through argon gas, it is right Furnace charge is refined, 20~30min of time control, the scum silica frost on furnace charge surface is removed after refining, after furnace charge is filtered again Obtain pure refining liquation；
4. cast：By step, 3. obtained refining liquation carries out direct casting shaping by casting die, and aluminium bar is made, then adopts With it is air-cooled to high temperature aluminium bar forced cooling to 450~550 DEG C, and be incubated 2~5h；
5. extrusion forming：Extrusion die is preheating to 400~450 DEG C, mould cylinder is preheating to 350~400 DEG C, then 4. step is made Aluminium bar be sent into mould cylinder in, mould cylinder is put into extrusion die, with 100~150N/mm of extruding force2, extruding 5~10 turns of rotating speed/ Min is extruded, you can extruding obtains the aluminium alloy extrusions that thickness is 20~30mm；
6. cool down：The aluminium alloy extrusions for 5. step being extruded obtain is heated to 450~500 DEG C, is incubated 30~60min, then use It is air-cooled that fast cooling is carried out to aluminium alloy extrusions, put it into 0~5 DEG C of brine ice and drop when temperature is down to 100~150 DEG C Then the aluminium alloy extrusions taken out from salt solution is warming up to 90~100 DEG C by temperature to less than 50 DEG C, be incubated 10~15h, then heat up To 130~150 DEG C, 5~10h is incubated, then is cooled to 80~100 DEG C, 10~15h is incubated, 180 is being warming up to after being cooled to room temperature ~200 DEG C, 3~5h is incubated, 70~80 DEG C is being cooled to, is being incubated 10~15h, last natural air cooling to room temperature；
7. heat-tinting is handled：After pickling, alkali cleaning and neutralization being carried out to the aluminium alloy extrusions after 6. step is handled, then by aluminium Alloy profile is positioned over temperature as in 20~25 DEG C of electrolyte as anode, 30~50min of anodic oxidation after energization, the electricity Solution liquid composition be：150~200g/L of sulfuric acid, Al3+10~20g/L, 50~80g/L of polyalcohol, 30~50g/L of organic carboxyl acid, Aluminium alloy extrusions is placed in coloring liquid again after anodic oxidation and carries out electrolytic coloring, the composition of the coloring liquid is：Stannous sulfate 5 ~20g/L, 20~30g/L of sulfamic acid, 5~10g/L of tartaric acid, 15~20g/L of reagent of sulfuric acid；
8. electrophoretic coating：Aluminium alloy extrusions after 7. step is handled is put into the electrophoresis tank equipped with electrophoretic paint with 5 ° of overturning angles In, bubble is excluded, is powered after infiltration, the temperature of electrophoretic paint is 20~25 DEG C, 150~170V of electrophoretic voltage, electrophoresis time 3~ 5min, after the time arrives, aluminium alloy extrusions is taken out, measures the thickness of paint film, film thickness, which reaches more than 20um, can be transferred to washing Groove is washed, and the underproof aluminium alloy extrusions of film thickness, which needs to be re-fed into, carries out japanning until qualified, warp in electrophoresis tank The aluminium alloy extrusions crossed after washing needs to be sent into curing room after draining away the water to be solidified, the temperature control of curing room 180~ 200 DEG C, 20~30min of hardening time, the aluminium alloy extrusions that hardening time is taken out after in curing room can obtain finished product.
The beneficial effect comprise that：
1st, the present invention is further to being formulated by reasonably adjusting composition and usage ratio about alloying element in aluminium formula Optimization, effectively raise the intensity and hardness of aluminium alloy extrusions, the intensity aluminium alloy extrusions more traditional with hardness, which is compared, to be carried It is high 1 times, be advantageous to improve the combination property of aluminium alloy extrusions.
2nd, the present invention by refining, casting, extrusion forming and cooling technique, further add inside aluminum alloy materials Uniformity and crystal grain refinement, greatly improved the quality and processing characteristics of aluminium alloy extrusions.
3rd, the present invention uses anodic oxidation and electrophoretic coating technique, and the heavy metals such as nickel, chromium, mercury are not used in its electrolyte Composition, whole production process technology environmental protection, and be effectively reduced the discharge of waste water and reduce production cost, in production process Sewage can all be circulated after processing, often produce one ton of aluminium alloy extrusions can save water 15~20 than traditional production technology Ton, 500~1000 degree of using electricity wisely.
4th, simple production process of the invention, technological requirement readily satisfy, the aluminium alloy extrusions produced not only surface Coating uniform, the adhesive force of coating is strong, spreadability is good, glossiness is good, product presentation quality is good, and significantly improves The corrosion resistance and against weather of product, long-term use of coating do not fade, not fallen off, and have stronger product stability, are easy to Promote the use of.
Embodiment
With reference to embodiment, the present invention is further illustrated, but the present invention is not any limitation as in any way, Based on present invention teach that any conversion or replacement made, belong to protection scope of the present invention.
Embodiment 1：
The production method of heat-tinting electrophoretic coating aluminium alloy extrusions described in the present embodiment 1, is comprised the following steps that：
1. dispensing is chosen:According to mass percent dispensing:Silicon 0.2%, magnesium 0.5%, iron 0.2%, copper 0.02%, manganese 0.05%, zinc 2.0%th, zirconium 0.02%, chromium 0.1%, titanium 0.1%, nichrome 0.2%, aluminium 96.61%；
2. prepare aluminium alloy melt：Smelting furnace is preheated, 200 DEG C are to slowly warm up in 1h, and is incubated 5h, then by step 1. In dispensing be added in smelting furnace, 650 DEG C are warming up in 1h, until smelting furnace in dispensing be completely melt；
3. refine：After the dispensing in smelting furnace is completely melt, then control smelting temperature carries out slagging-off work, gone at 700 DEG C Except the scum silica frost on furnace charge surface, and furnace charge is slowly stirred in 5min, release furnace interior divides hydrogen, and zinc is then added in smelting furnace Block, the dosage of spelter are the 0.5% of dispensing gross weight, and magnesium is added in smelting furnace again in the 5min after spelter dissolves completely Block, the dosage of MAG block are the 0.5% of dispensing gross weight, are slowly stirred, it is ensured that after MAG block fusing completely, in-furnace temperature is increased to 730 DEG C, refining agent is finally added in smelting furnace, the refining agent is zinc chloride, and the dosage of zinc chloride is dispensing gross weight 0.5%, and argon gas is passed through, furnace charge is refined, time control 20min, the scum silica frost on furnace charge surface is removed after refining, by furnace charge Pure refining liquation is can obtain after filtering again；
4. cast：By step, 3. obtained refining liquation carries out direct casting shaping by casting die, and aluminium bar is made, then adopts With it is air-cooled to high temperature aluminium bar forced cooling to 450 DEG C, and be incubated 2h；
5. extrusion forming：Extrusion die is preheating to 400 DEG C, mould cylinder is preheating to 350 DEG C, then 4. obtained aluminium bar is sent into by step In mould cylinder, mould cylinder is put into extrusion die, with extruding force 100N/mm2, extruding 5 turns/min of rotating speed extruded, you can extruding Obtain the aluminium alloy extrusions that thickness is 20~30mm；
6. cool down：The aluminium alloy extrusions for 5. step being extruded obtain is heated to 450 DEG C, is incubated 30min, then aluminium is closed using air-cooled Metal type material carries out fast cooling, is put it into when temperature is down to 100 DEG C in 0 DEG C of brine ice and is cooled to less than 50 DEG C, then The aluminium alloy extrusions taken out from salt solution is warming up to 90 DEG C, is incubated 10h, then is warming up to 130 DEG C, is incubated 5h, then be cooled to 80 DEG C, 10h is incubated, 180 DEG C is being warming up to after being cooled to room temperature, is being incubated 3h, be cooled to 70 DEG C, be incubated 10h, last natural air cooling To room temperature；
7. heat-tinting is handled：After carrying out pickling, alkali cleaning and neutralization to the aluminium alloy extrusions after 6. step is handled, pickling is adopted With 150g/L sulfuric acid solution pickling 2min, alkali cleaning uses 50g/L sodium hydroxide solution alkali cleaning 2min, neutralizes and uses industrial sulphur Sour 150g/L and industrial sulphuric acid 30g/L mixed liquid dipping 2min, then using aluminium alloy extrusions as anode, temperature is positioned over as 20 DEG C In electrolyte, anodic oxidation 30min after energization, the composition of the electrolyte is：Sulfuric acid 150/L, Al3+10g/L, polyalcohol 50g/ L, organic carboxyl acid 30g/L, aluminium alloy extrusions is placed in coloring liquid again after anodic oxidation and carries out electrolytic coloring, the coloring liquid Composition is：Stannous sulfate 5g/L, sulfamic acid 20g/L, tartaric acid 5g/L, reagent of sulfuric acid 15g/L；
8. electrophoretic coating：Aluminium alloy extrusions after 7. step is handled is put into the electrophoresis tank equipped with electrophoretic paint with 5 ° of overturning angles In, bubble is excluded, is powered after infiltration, the temperature of electrophoretic paint is 20 DEG C, electrophoretic voltage 150V, electrophoresis time 3min, after the time arrives, Aluminium alloy extrusions is taken out, measures the thickness of paint film, film thickness, which reaches more than 20um and can be transferred to rinsing bowl, to be washed, paint film The aluminium alloy extrusions of unqualified thickness lattice, which needs to be re-fed into, carries out japanning until qualified, the aluminium alloy after washing in electrophoresis tank Section bar needed after draining away the water be sent into curing room solidified, the temperature control of curing room in 180 DEG C, hardening time 20min, Gu The aluminium alloy extrusions that the change time is taken out after in curing room can obtain finished product.
Pass through aluminium alloy extrusions made from above-mentioned technical process, from outer light, the electrodeposited paint film of aluminium alloy section surface Uniformly, neatly, without wrinkle, crackle, bubble, current mark and field trash, after water-fast boiling property experiment, coating surface without wrinkle, split Line, bubble and the discoloration that comes off, after wash resistant agent experiment, coating surface do not have bubble, comes off or other significant changes, specifically Product quality examination criteria and measured data are as follows：
1st, oxide thickness：Average >=6 μm are surveyed 7.5 μm
2nd, electrodeposited paint film thickness：Average >=20 μm are surveyed 22 μm
3rd, tack：0 grade is surveyed not less than 0 grade
4th, hardness：>=3H surveys 4H
5th, salt fog resistance：>=9.5 grades are surveyed 9.7 grades
6th, alkali resistance protection class：>=9.5 grades are surveyed 9.8 grades
7th, weatherability performance test：92% discoloration≤1 grade is surveyed using xenon lamp irradiation 1000h gloss retention >=80%, 0 grade of actual measurement.
Embodiment 2
The production method of heat-tinting electrophoretic coating aluminium alloy extrusions described in the present embodiment 2, is comprised the following steps that：
1. dispensing is chosen:According to mass percent dispensing:Silicon 1.5%, magnesium 1.5%, iron 0.6%, copper 0.2%, manganese 0.5%, zinc 3%, zirconium 0.06%th, chromium 0.15%, titanium 0.4%, nichrome 0.3%, aluminium 91.79%；
2. prepare aluminium alloy melt：Smelting furnace is preheated, 220 DEG C are to slowly warm up in 1h, and is incubated 5h, then by step 1. Middle dispensing is added in smelting furnace, and 750 DEG C are warming up in 2h, until the dispensing in smelting furnace is completely melt；
3. refine：After the dispensing in smelting furnace is completely melt, then control smelting temperature carries out slagging-off work, gone at 715 DEG C Except the scum silica frost on furnace charge surface, and furnace charge is slowly stirred in 5min, release furnace interior divides hydrogen, and zinc is then added in smelting furnace Block, the dosage of spelter are the 1.2% of dispensing gross weight, and magnesium is added in smelting furnace again in the 8min after spelter dissolves completely Block, the dosage of MAG block are the 0.8% of dispensing gross weight, are slowly stirred, it is ensured that after MAG block fusing completely, in-furnace temperature is increased to 740 DEG C, refining agent is finally added in smelting furnace, the refining agent is manganese chloride, and the dosage of manganese chloride is dispensing gross weight 2%；And argon gas is passed through, furnace charge is refined, time control 25min, the scum silica frost on furnace charge surface is removed after refining, by furnace charge again Pure refining liquation is can obtain after secondary filtering；
4. cast：By step, 3. obtained refining liquation carries out direct casting shaping by casting die, and aluminium bar is made, then adopts With it is air-cooled to high temperature aluminium bar forced cooling to 500 DEG C, and be incubated 2~5h；
5. extrusion forming：Extrusion die is preheating to 425 DEG C, mould cylinder is preheating to 380 DEG C, then 4. obtained aluminium bar is sent into by step In mould cylinder, mould cylinder is put into extrusion die, with extruding force 120N/mm2, extruding 8 turns/min of rotating speed extruded, you can extruding Obtain the aluminium alloy extrusions that thickness is 20~30mm；
6. cool down：The aluminium alloy extrusions for 5. step being extruded obtain is heated to 480 DEG C, is incubated 45min, then aluminium is closed using air-cooled Metal type material carries out fast cooling, is put it into when temperature is down to 1120 DEG C in 3 DEG C of brine ice and is cooled to less than 50 DEG C, then The aluminium alloy extrusions taken out from salt solution is warming up to 95 DEG C, is incubated 12h, then is warming up to 140 DEG C, is incubated 8h, then be cooled to 90 DEG C, 12h is incubated, 190 DEG C is being warming up to after being cooled to room temperature, is being incubated 4h, be cooled to 75 DEG C, be incubated 12h, last natural air cooling To room temperature；
7. heat-tinting is handled：After carrying out pickling, alkali cleaning and neutralization to the aluminium alloy extrusions after 6. step is handled, pickling is adopted With 180g/L sulfuric acid solution pickling 4min, alkali cleaning uses 65g/L sodium hydroxide solution alkali cleaning 4min, neutralizes and uses industrial sulphur Sour 180g/L and industrial sulphuric acid 40g/L mixed liquid dipping 4min, then using aluminium alloy extrusions as anode, temperature is positioned over as 22 DEG C In electrolyte, anodic oxidation 40min after energization, the composition of the electrolyte is：Sulfuric acid 180g/L, Al3+15g/L, polyalcohol 65g/L, organic carboxyl acid 45g/L, aluminium alloy extrusions is placed in coloring liquid again after anodic oxidation and carries out electrolytic coloring, the coloring The composition of liquid is：Stannous sulfate 12g/L, sulfamic acid 25g/L, tartaric acid 8g/L, reagent of sulfuric acid 18g/L；
8. electrophoretic coating：Aluminium alloy extrusions after 7. step is handled is put into the electrophoresis tank equipped with electrophoretic paint with 5 ° of overturning angles In, bubble is excluded, is powered after infiltration, the temperature of electrophoretic paint is 22 DEG C, electrophoretic voltage 160V, electrophoresis time 4min, after the time arrives, Aluminium alloy extrusions is taken out, measures the thickness of paint film, film thickness, which reaches more than 20um and can be transferred to rinsing bowl, to be washed, paint film The aluminium alloy extrusions of unqualified thickness lattice, which needs to be re-fed into, carries out japanning until qualified, the aluminium alloy after washing in electrophoresis tank Section bar needs feeding curing room to be solidified after draining away the water, the temperature control of curing room is in 180~200 DEG C, hardening time 20 ~30min, the aluminium alloy extrusions that hardening time is taken out after in curing room can obtain finished product.
Pass through aluminium alloy extrusions made from above-mentioned technical process, from outer light, the electrodeposited paint film of aluminium alloy section surface Uniformly, neatly, without wrinkle, crackle, bubble, current mark and field trash, after water-fast boiling property experiment, coating surface without wrinkle, split Line, bubble and the discoloration that comes off, after wash resistant agent experiment, coating surface do not have bubble, comes off or other significant changes, specifically Product quality examination criteria and measured data are as follows：
1st, oxide thickness：Average >=6 μm are surveyed 8 μm
2nd, electrodeposited paint film thickness：Average >=20 μm are surveyed 25 μm
3rd, tack：0 grade is surveyed not less than 0 grade
4th, hardness：>=3H surveys 3H
5th, salt fog resistance：>=9.5 grades are surveyed 9.8 grades
6th, alkali resistance protection class：>=9.5 grades are surveyed 9.5 grades
7th, weatherability performance test：99% discoloration≤1 grade is surveyed using xenon lamp irradiation 1000h gloss retention >=80%, 0 grade of actual measurement.
Embodiment 3：
The production method of heat-tinting electrophoretic coating aluminium alloy extrusions described in the present embodiment 3, is comprised the following steps that：
1. dispensing is chosen:According to mass percent dispensing:Silicon 3%, magnesium 2%, iron 1%, copper 0.5%, manganese 0.1%, zinc 3.5%, zirconium 0.09%th, chromium 0.2%, titanium 0.65%, nichrome 0.5%, aluminium 88.46%；
2. prepare aluminium alloy melt：Smelting furnace is preheated, 250 DEG C are to slowly warm up in 1h, and is incubated 5h, then by step 1. In dispensing be added in smelting furnace, 800 DEG C are warming up in 3h, until smelting furnace in dispensing be completely melt；
3. refine：After the dispensing in smelting furnace is completely melt, then control smelting temperature carries out slagging-off work, gone at 720 DEG C Except the scum silica frost on furnace charge surface, and furnace charge is slowly stirred in 5min, release furnace interior divides hydrogen, and zinc is then added in smelting furnace Block, the dosage of spelter are the 2% of dispensing gross weight, and magnesium is added in smelting furnace again in the 10min after spelter dissolves completely Block, the dosage of MAG block are the 1% of dispensing gross weight, are slowly stirred, it is ensured that after MAG block fusing completely, in-furnace temperature is increased into 750 DEG C, refining agent is finally added in smelting furnace, the refining agent is zinc chloride, and the dosage of zinc chloride is dispensing gross weight 3.5%, and argon gas is passed through, furnace charge is refined, time control 30min, the scum silica frost on furnace charge surface is removed after refining, by furnace charge Pure refining liquation is can obtain after filtering again；
4. cast：By step, 3. obtained refining liquation carries out direct casting shaping by casting die, and aluminium bar is made, then adopts With it is air-cooled to high temperature aluminium bar forced cooling to 550 DEG C, and be incubated 5h；
5. extrusion forming：Extrusion die is preheating to 450 DEG C, mould cylinder is preheating to 400 DEG C, then 4. obtained aluminium bar is sent into by step In mould cylinder, mould cylinder is put into extrusion die, with extruding force 150N/mm2, extruding 10 turns/min of rotating speed extruded, you can squeeze Pressure obtains the aluminium alloy extrusions that thickness is 20~30mm；
6. cool down：The aluminium alloy extrusions for 5. step being extruded obtain is heated to 500 DEG C, is incubated 60min, then aluminium is closed using air-cooled Metal type material carries out fast cooling, is put it into when temperature is down to 150 DEG C in 5 DEG C of brine ice and is cooled to less than 50 DEG C, then The aluminium alloy extrusions taken out from salt solution is warming up to 100 DEG C, is incubated 15h, then is warming up to 150 DEG C, is incubated 10h, then be cooled to 100 DEG C, 15h is incubated, 200 DEG C is being warming up to after being cooled to room temperature, is being incubated 5h, be cooled to 80 DEG C, is incubated 15h, it is last natural It is air-cooled to room temperature；
7. heat-tinting is handled：After carrying out pickling, alkali cleaning and neutralization to the aluminium alloy extrusions after 6. step is handled, pickling is adopted With 200g/L sulfuric acid solution pickling 5min, alkali cleaning uses 80g/L sodium hydroxide solution alkali cleaning 5min, neutralizes and uses industrial sulphur Sour 200g/L and industrial sulphuric acid 50g/L mixed liquid dipping 5min, then using aluminium alloy extrusions as anode, temperature is positioned over as 25 DEG C In electrolyte, anodic oxidation 50min after energization, the composition of the electrolyte is：Sulfuric acid 1200g/L, Al3+20g/L, polyalcohol 80g/L, organic carboxyl acid 50g/L, aluminium alloy extrusions is placed in coloring liquid again after anodic oxidation and carries out electrolytic coloring, the coloring The composition of liquid is：Stannous sulfate 20g/L, sulfamic acid 30g/L, tartaric acid 10g/L, reagent of sulfuric acid 20g/L；
8. electrophoretic coating：Aluminium alloy extrusions after 7. step is handled is put into the electrophoresis tank equipped with electrophoretic paint with 5 ° of overturning angles In, bubble is excluded, is powered after infiltration, the temperature of electrophoretic paint is 25 DEG C, electrophoretic voltage 170V, electrophoresis time 5min, after the time arrives, Aluminium alloy extrusions is taken out, measures the thickness of paint film, film thickness, which reaches more than 20um and can be transferred to rinsing bowl, to be washed, paint film The aluminium alloy extrusions of unqualified thickness lattice, which needs to be re-fed into, carries out japanning until qualified, the aluminium alloy after washing in electrophoresis tank Section bar needed after draining away the water be sent into curing room solidified, the temperature control of curing room in 200 DEG C, hardening time 30min, Gu The aluminium alloy extrusions that the change time is taken out after in curing room can obtain finished product.
Pass through aluminium alloy extrusions made from above-mentioned technical process, from outer light, the electrodeposited paint film of aluminium alloy section surface Uniformly, neatly, without wrinkle, crackle, bubble, current mark and field trash, after water-fast boiling property experiment, coating surface without wrinkle, split Line, bubble and the discoloration that comes off, after wash resistant agent experiment, coating surface do not have bubble, comes off or other significant changes, specifically Product quality examination criteria and measured data are as follows：
1st, oxide thickness：Average >=6 μm are surveyed 8 μm
2nd, electrodeposited paint film thickness：Average >=20 μm are surveyed 24 μm
3rd, tack：0 grade is surveyed not less than 0 grade
4th, hardness：>=3H surveys 3.5H
5th, salt fog resistance：>=9.5 grades are surveyed 9.8 grades
6th, alkali resistance protection class：>=9.5 grades are surveyed 9.7 grades
7th, weatherability performance test：90% discoloration≤1 grade is surveyed using xenon lamp irradiation 1000h gloss retention >=80%, 0 grade of actual measurement.

Claims (7)

1. a kind of production method of heat-tinting electrophoretic coating aluminium alloy extrusions, it is characterised in that comprise the following steps that：
1. dispensing is chosen:According to mass percent dispensing:Silicon 0.2~3%, magnesium 0.5~2%, iron 0.2~1%, copper 0.02~0.5%, Manganese 0.05~0.1%, zinc 2.0~3.5%, zirconium 0.02~0.09%, chromium 0.1~0.2%, titanium 0.1~0.65%, nichrome 0.2~ 0.5%, remaining is aluminium；
2. prepare aluminium alloy melt：Smelting furnace is preheated, 200~250 DEG C are to slowly warm up in 1h, and is incubated 5h, then will Step 1. in dispensing be added in smelting furnace, 700~800 DEG C are warming up in 1~3h, until smelting furnace in dispensing it is complete Fusing；
3. refine：After the dispensing in smelting furnace is completely melt, then control smelting temperature carries out slagging-off work at 710~720 DEG C Make, remove the scum silica frost on furnace charge surface, and furnace charge is slowly stirred in 5min, release furnace interior divides hydrogen, then in smelting furnace Spelter is added, MAG block is added in smelting furnace again in 5~10min after spelter dissolves completely, is slowly stirred, it is ensured that MAG block After fusing completely, in-furnace temperature is increased to 730~750 DEG C, refining agent is finally added in smelting furnace, and be passed through argon gas, it is right Furnace charge is refined, 20~30min of time control, the scum silica frost on furnace charge surface is removed after refining, after furnace charge is filtered again Obtain pure refining liquation；
4. cast：By step, 3. obtained refining liquation carries out direct casting shaping by casting die, and aluminium bar is made, then adopts With it is air-cooled to high temperature aluminium bar forced cooling to 450~550 DEG C, and be incubated 2~5h；
5. extrusion forming：Extrusion die is preheating to 400~450 DEG C, mould cylinder is preheating to 350~400 DEG C, then 4. step is made Aluminium bar be sent into mould cylinder in, mould cylinder is put into extrusion die, with 100~150N/mm of extruding force2, extruding 5~10 turns of rotating speed/ Min is extruded, you can extruding obtains the aluminium alloy extrusions that thickness is 20~30mm；
6. cool down：The aluminium alloy extrusions for 5. step being extruded obtain is heated to 450~500 DEG C, is incubated 30~60min, then use It is air-cooled that fast cooling is carried out to aluminium alloy extrusions, put it into 0~5 DEG C of brine ice and drop when temperature is down to 100~150 DEG C Then the aluminium alloy extrusions taken out from salt solution is warming up to 90~100 DEG C by temperature to less than 50 DEG C, be incubated 10~15h, then heat up To 130~150 DEG C, 5~10h is incubated, then is cooled to 80~100 DEG C, 10~15h is incubated, 180 is being warming up to after being cooled to room temperature ~200 DEG C, 3~5h is incubated, 70~80 DEG C is being cooled to, is being incubated 10~15h, last natural air cooling to room temperature；
7. heat-tinting is handled：After pickling, alkali cleaning and neutralization being carried out to the aluminium alloy extrusions after 6. step is handled, then by aluminium Alloy profile is positioned over temperature as in 20~25 DEG C of electrolyte as anode, 30~50min of anodic oxidation after energization, the electricity Solution liquid composition be：150~200g/L of sulfuric acid, Al3+10~20g/L, 50~80g/L of polyalcohol, 30~50g/L of organic carboxyl acid, Aluminium alloy extrusions is placed in coloring liquid again after anodic oxidation and carries out electrolytic coloring, the composition of the coloring liquid is：Stannous sulfate 5 ~20g/L, 20~30g/L of sulfamic acid, 5~10g/L of tartaric acid, 15~20g/L of reagent of sulfuric acid；
8. electrophoretic coating：Aluminium alloy extrusions after 7. step is handled is put into the electrophoresis tank equipped with electrophoretic paint with 5 ° of overturning angles In, bubble is excluded, is powered after infiltration, the temperature of electrophoretic paint is 20~25 DEG C, 150~170V of electrophoretic voltage, electrophoresis time 3~ 5min, after the time arrives, aluminium alloy extrusions is taken out, measures the thickness of paint film, film thickness, which reaches more than 20um, can be transferred to washing Groove is washed, and the underproof aluminium alloy extrusions of film thickness, which needs to be re-fed into, carries out japanning until qualified, warp in electrophoresis tank The aluminium alloy extrusions crossed after washing needs to be sent into curing room after draining away the water to be solidified, the temperature control of curing room 180~ 200 DEG C, 20~30min of hardening time, the aluminium alloy extrusions that hardening time is taken out after in curing room can obtain finished product.
A kind of 2. production method of heat-tinting electrophoretic coating aluminium alloy extrusions according to claim 1, it is characterised in that： Step 3. in, the refining agent is zinc chloride or manganese chloride, the dosage of the refining agent for dispensing gross weight 0.5~ 3.5%。
A kind of 3. production method of heat-tinting electrophoretic coating aluminium alloy extrusions according to claim 1, it is characterised in that： Step 3. in, the dosage of the spelter is the 0.5~2% of dispensing gross weight.
A kind of 4. production method of heat-tinting electrophoretic coating aluminium alloy extrusions according to claim 1, it is characterised in that： Step 3. in, the dosage of the MAG block is the 0.5~1% of dispensing gross weight.
A kind of 5. production method of heat-tinting electrophoretic coating aluminium alloy extrusions according to claim 1, it is characterised in that： Step 7. in, the pickling use 150~200g/L 2~5min of sulfuric acid solution pickling.
A kind of 6. production method of heat-tinting electrophoretic coating aluminium alloy extrusions according to claim 1, it is characterised in that： Step 7. in, the alkali cleaning use 50~80g/L 2~5min of sodium hydroxide solution alkali cleaning.
A kind of 7. production method of heat-tinting electrophoretic coating aluminium alloy extrusions according to claim 1, it is characterised in that： Step 7. in, it is described neutralize using 150~200g/L of industrial sulphuric acid and 30~50g/L of industrial sulphuric acid mixed liquid dippings 2~ 5min。
CN201710602558.0A 2017-07-21 2017-07-21 A kind of production method of heat-tinting electrophoretic coating aluminium alloy extrusions Pending CN107502766A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108641589A (en) * 2018-06-19 2018-10-12 界首市创新门窗有限公司 A kind of aluminium alloy door's window profile of anti-chloride ion-containing mortar corrosion
CN108707942A (en) * 2018-05-30 2018-10-26 江苏和兴汽车科技有限公司 A kind of technique of aluminium alloy black anodizing electrophoresis
CN110125365A (en) * 2019-04-23 2019-08-16 佛山市成铝金属制品有限公司 A kind of rose golden aluminium mold design compressive surface processing integral forming process
CN111455201A (en) * 2020-05-06 2020-07-28 查磊军 Aluminum alloy casting process
CN112126831A (en) * 2020-09-10 2020-12-25 江苏科源铝业有限公司 Bright anticorrosive aluminum profile and preparation method thereof
CN113418399A (en) * 2021-04-29 2021-09-21 广元市林丰铝电有限公司 Environment-friendly and clean aluminum profile production line
CN115074802A (en) * 2022-07-26 2022-09-20 中亿丰罗普斯金材料科技股份有限公司 Processing technology and processing equipment for bright amber copper oxide electrophoresis aluminum profile

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103710589A (en) * 2013-12-17 2014-04-09 芜湖万润机械有限责任公司 Preparation method of high-heat-conductivity aluminum alloy section for motor shell
CN104499027A (en) * 2014-11-17 2015-04-08 广东永利坚铝业有限公司 Technology for producing wood-like aluminium alloy section bar with environmental protection and super weatherability
CN106048344A (en) * 2016-06-30 2016-10-26 合肥慧林建材有限公司 High-strength aluminum alloy profile and production process thereof
CN106756321A (en) * 2016-12-19 2017-05-31 镇江创智特种合金科技发展有限公司 A kind of aluminium alloy cast rod production technology

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103710589A (en) * 2013-12-17 2014-04-09 芜湖万润机械有限责任公司 Preparation method of high-heat-conductivity aluminum alloy section for motor shell
CN104499027A (en) * 2014-11-17 2015-04-08 广东永利坚铝业有限公司 Technology for producing wood-like aluminium alloy section bar with environmental protection and super weatherability
CN106048344A (en) * 2016-06-30 2016-10-26 合肥慧林建材有限公司 High-strength aluminum alloy profile and production process thereof
CN106756321A (en) * 2016-12-19 2017-05-31 镇江创智特种合金科技发展有限公司 A kind of aluminium alloy cast rod production technology

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108707942A (en) * 2018-05-30 2018-10-26 江苏和兴汽车科技有限公司 A kind of technique of aluminium alloy black anodizing electrophoresis
CN108641589A (en) * 2018-06-19 2018-10-12 界首市创新门窗有限公司 A kind of aluminium alloy door's window profile of anti-chloride ion-containing mortar corrosion
CN110125365A (en) * 2019-04-23 2019-08-16 佛山市成铝金属制品有限公司 A kind of rose golden aluminium mold design compressive surface processing integral forming process
CN111455201A (en) * 2020-05-06 2020-07-28 查磊军 Aluminum alloy casting process
CN112126831A (en) * 2020-09-10 2020-12-25 江苏科源铝业有限公司 Bright anticorrosive aluminum profile and preparation method thereof
CN113418399A (en) * 2021-04-29 2021-09-21 广元市林丰铝电有限公司 Environment-friendly and clean aluminum profile production line
CN115074802A (en) * 2022-07-26 2022-09-20 中亿丰罗普斯金材料科技股份有限公司 Processing technology and processing equipment for bright amber copper oxide electrophoresis aluminum profile
CN115074802B (en) * 2022-07-26 2022-11-11 中亿丰罗普斯金材料科技股份有限公司 Processing technology and processing equipment for bright amber copper oxide electrophoresis aluminum profile

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Application publication date: 20171222