CN105220034A - Anodized aluminum alloy section bar closed by a kind of nickel salt - Google Patents
Anodized aluminum alloy section bar closed by a kind of nickel salt Download PDFInfo
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- CN105220034A CN105220034A CN201410240735.1A CN201410240735A CN105220034A CN 105220034 A CN105220034 A CN 105220034A CN 201410240735 A CN201410240735 A CN 201410240735A CN 105220034 A CN105220034 A CN 105220034A
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Abstract
The invention discloses a kind of nickel salt and close anodized aluminum alloy section bar, relate to metal material field, described aluminium alloy extrusions moiety comprises by weight percentage: Mg:0.75-0.90; Si:0.5-0.6; Cu:0.10-0.14; Mn:0.20-0.25; Ti:0-0.1; Cr:0-0.1; Fe:0.1-0.3; Zn:0.20-0.28; Surplus is Al.The material of aluminium alloy extrusions described in the present invention, is optimized by alloy composition, and is optimized melting and casting, homogenizing, extruding, thermal treatment, treatment in production technique, effectively improves mechanical property and the top layer film quality of section bar.
Description
Technical field
The present invention relates to metal material field, particularly relate to a kind of nickel salt and close anodized aluminum alloy section bar.
Background technology
Sliding window advantage be succinct, attractive in appearance, window width is large, glass block is large, broad view, daylight rate are high, clean the windows conveniently, use flexible, safe and reliable, long service life, opens, occupy space few in a plane, installs screen window convenient etc.Most popular in current door and window is exactly sliding window, because aluminium alloy extrusions to have the advantage of light, the attractive in appearance economy of quality relative to other shapes, current sliding window mainly adopts aluminium alloy extrusions to make, aluminium alloy section surface widely uses anodizing technology to carry out processing to improve its corrosion resisting property, wear resisting property and surface hardness, the oxide film that aluminum alloy surface obtains after anodic oxidation has high porosity and adsorptivity, easily contaminated, appropriate sealing technique must be adopted to be closed by the micropore of oxide film.In prior art, anodized aluminum alloy section bar sealing technique mainly contains boiling water and closes and cbromate seal, and boiling water closes energy consumption greatly, and chromic salts enclosed environment is seriously polluted, needs constantly to improve.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of nickel salt and close anodized aluminum alloy section bar, achieve the optimization of Production technology of aluminum alloy sectional bar, its excellent performance.
The invention discloses a kind of nickel salt and close anodized aluminum alloy section bar, its composition component comprises by weight percentage: Mg:0.75-0.90; Si:0.5-0.6; Cu:0.10-0.14; Mn:0.20-0.25; Ti:0-0.1; Cr:0-0.1; Fe:0.1-0.3; Zn:0.20-0.28; Surplus is Al, and prepares according to the following steps:
S1: take each raw material and carry out founding, and the ingot casting that founding obtains is carried out Homogenization Treatments;
S2: extruding: the ladle barrow obtained in S1 is removed crust, extrude on a hydraulic press, to container before extruding, overflow mould and ingot casting heat, treat after having extruded that section bar is cooled to less than 50 DEG C, tension leveling is carried out to section bar, container type of heating is: be warming up to 95-105 DEG C and after being incubated 0.5-1h, be warming up to 195-205 DEG C and after being incubated 0.5-1h, be warming up to 295-305 DEG C and after being incubated 0.5-1h, be warming up to 395-405 DEG C and after being incubated 0.5-1h, be warming up to 450-480 DEG C, overflow mould is positioned over and is incubated 4-8h in the holding furnace of 450-500 DEG C and heats, ingot casting is positioned over and is incubated 1-2h in the holding furnace of 450-520 DEG C and heats, wherein, the deflection of tension leveling is 1-3%, extruding rate is 8-40m/min,
S3: thermal treatment: be positioned over completing tension leveling section bar in S2 in 1-8h in the holding furnace of 145-155 DEG C, and after being warming up to 185-195 DEG C with the V-bar of 7-9 DEG C/h, air cooling is to room temperature;
S4: treatment: the heat treated section bar completed in S3 is carried out treatment according to the process route of surface finish → degreasing → washing → alkali cleaning → Warm Wash → washing → bright dipping → washing → anodic oxidation → washing → closed → Warm Wash → drying, wherein, anodic oxidation solution consists of 165-175g/L sulfuric acid, anodizing temperature is 19-23 DEG C, anodizing time is 32-38min, voltage is (14 ± 1) V, cathode material is pure stereotype, lock solution is 3-5g/L nickel salt+0.5-1.5g/L promotor+1-3g/L buffer reagent, lock solution pH value is 6-7, closure temperature is 33-37 DEG C, off-period is 18-22min.
Preferably, in its moiety, the mass ratio of Mg and Si is (1.2-1.5): 1.
Preferably, in step s3, be positioned over completing tension leveling section bar in S2 in 2-3h in the holding furnace of 148-152 DEG C.
Preferably, in step s3, holding furnace rises to the process of 185-195 DEG C from 145-155 DEG C, and with the rising of temperature, temperature rise rate increases, and temperature and time becomes sinusoidal function relation.
In the present invention, the nickel salt of proposition closes anodized aluminum alloy section bar by optimizing components, and production technique is improved, and improve the over-all properties of aluminium alloy extrusions, compared with prior art, concrete advantage is as follows:
1, alloy composition is optimized, and improves the content of Mg element and Si element in alloy, and suitably improves the content of Mn element, Cu element and Zn element; Due to Mg
2si phase is the main strengthening phase in Al-Mg-Si system alloy, and the impact of its quantity, size and form alloy performance is very big, by improving the content of Mg element and Si element in alloy, can improve Mg in alloy
2the content of Si phase, thus lay the foundation for the lifting of final alloy strength, adding of appropriate Zn contributes to carrying heavy alloyed final strength, and meanwhile, a small amount of Cu adds, and can generate CuAl
2phase and Cu
3al
2phase, these two kinds have ageing strengthening effect mutually, contribute to the raising of final alloy strength; Adding of appropriate Mn element, make ingot casting after follow-up Homogenization Treatments, acicular beta-Al9FeSi phase in version is granular α-Al15 (FeMn) 3Si2 disperse phase, thus eliminate the harmful effect of the relative alloy property of thick needle crystal, reduce Impurity Fe to the disadvantageous effect of material property, carry heavy alloyed moulding, meanwhile, granular α-Al
15(FeMn)
3si
2disperse phase particle can also stop the recrystallize of alloy in subsequent thermal extrusion process used for forming, and promotes Mg in ag(e)ing process
2the precipitation of Si phase, refinement recrystal grain, Mn can also expand the quenching temperature upper limit, increases the solid solubility of alloying element, thus improves alloy over-all properties;
2, production technique is improved, by the optimization to extrusion process, improve the yield rate of alloy further, by the optimization to thermal treatment process, control Mg
2the precipitation process of Si strengthening phase, improves Mg
2si strengthening phase quantity, reduce Mg
2si strengthening phase size also makes Mg
2si strengthening phase distributional pattern is more reasonable, makes alloy obtain better mechanical property, by the optimization to top layer treatment process, improves alloy surface pattern and state, improve the stability of top layer rete, improve the solidity to corrosion of alloy.
Embodiment
Below in conjunction with specific examples, the present invention is described in detail; should understand; embodiment is only for illustration of the present invention, instead of for limiting the present invention, any amendment, equivalent replacement etc. made on basis of the present invention is all in protection scope of the present invention.
Anodized aluminum alloy section bar closed by nickel salt disclosed in this invention, and in each embodiment, composition proportion (weight percent) detected result of ingot casting is as shown in table 1:
Mg | Si | Cu | Mn | Cr | Ti | Zn | Fe | Al |
Embodiment 1 | 0.90.6 | 0.10 | 0.22 | 0.10 | 0.08 | 0.26 | 0.2 | Surplus |
Embodiment 2 | 0.750.5 | 0.14 | 0.25 | 0.10 | 0.06 | 0.20 | 0.2 | Surplus |
Embodiment 3 | 0.800.52 | 0.12 | 0.20 | 0.08 | 0.07 | 0.22 | 0.2 | Surplus |
Embodiment 4 | 0.820.55 | 0.10 | 0.23 | 0.07 | 0.08 | 0.28 | 0.21 | Surplus |
Embodiment 5 | 0.850.58 | 0.12 | 0.20 | 0.06 | 0.08 | 0.27 | 0.18 | Surplus |
Embodiment 6 | 0.830.56 | 0.13 | 0.24 | 0.07 | 0.06 | 0.25 | 0.22 | Surplus |
Each embodiment preparation method is as follows:
Embodiment 1
S1: take each raw material and carry out founding, and the ingot casting that founding obtains is carried out Homogenization Treatments;
S2: extruding: the ingot homogenization rear car obtained in S1 is removed crust, extrude on a hydraulic press, to container before extruding, overflow mould and ingot casting heat, treat after having extruded that section bar is cooled to less than 50 DEG C, after tension leveling is carried out to section bar, heat-treat, container type of heating is: be warming up to 100 DEG C and after being incubated 0.7h, be warming up to 200 DEG C and after being incubated 0.7h, be warming up to 300 DEG C and after being incubated 0.7h, be warming up to 400 DEG C and after being incubated 0.7h, be warming up to 465 DEG C, overflow mould is positioned over and is incubated 6h in the holding furnace of 470 DEG C and heats, ingot casting is positioned over and is incubated 1.5h in the holding furnace of 500 DEG C and heats, wherein, the deflection of tension leveling is 2%, extruding rate is 24m/min,
S3: thermal treatment: be positioned in the holding furnace of 155 DEG C in 1h by completing tension leveling section bar in S2, and after being warming up to 195 DEG C with the V-bar of 7 DEG C/h, air cooling is to room temperature, wherein, holding furnace rises to the process of 195 DEG C from 155 DEG C, with the rising of temperature, temperature rise rate increases, and temperature and time becomes sinusoidal function relation;
S4: treatment: the heat treated section bar completed in S3 is carried out treatment according to the process route of surface finish → degreasing → washing → alkali cleaning → Warm Wash → washing → bright dipping → washing → anodic oxidation → washing → closed → Warm Wash → drying, wherein, anodic oxidation solution consists of 170g/L sulfuric acid, anodizing temperature is 21 DEG C, anodizing time is 35min, voltage is 14V, cathode material is pure stereotype, lock solution is 4g/L nickel salt+1g/L promotor+2g/L buffer reagent, lock solution pH value is 6.5, closure temperature is 35, off-period is 20min.
Embodiment 2
S1: take each raw material and carry out founding, and the ingot casting that founding obtains is carried out Homogenization Treatments;
S2: extruding: the ingot homogenization rear car obtained in S1 is removed crust, extrude on a hydraulic press, to container before extruding, overflow mould and ingot casting heat, treat after having extruded that section bar is cooled to less than 50 DEG C, after tension leveling is carried out to section bar, heat-treat, container type of heating is: be warming up to 95 DEG C and after being incubated 1h, be warming up to 195 DEG C and after being incubated 1h, be warming up to 295 DEG C and after being incubated 1h, be warming up to 395 DEG C and after being incubated 1h, be warming up to 450 DEG C, overflow mould is positioned over and is incubated 8h in the holding furnace of 450 DEG C and heats, ingot casting is positioned over and is incubated 1.2h in the holding furnace of 460 DEG C and heats, wherein, the deflection of tension leveling is 1.2%, extruding rate is 10m/min,
S3: thermal treatment: be positioned in the holding furnace of 145 DEG C in 8h by completing tension leveling section bar in S2, and after being warming up to 185 DEG C with the V-bar of 9 DEG C/h, air cooling is to room temperature, wherein, holding furnace rises to the process of 185 DEG C from 145 DEG C, with the rising of temperature, temperature rise rate increases, and temperature and time becomes sinusoidal function relation;
S4: treatment: the heat treated section bar completed in S3 is carried out treatment according to the process route of surface finish → degreasing → washing → alkali cleaning → Warm Wash → washing → bright dipping → washing → anodic oxidation → washing → closed → Warm Wash → drying, wherein, anodic oxidation solution consists of 165g/L sulfuric acid, anodizing temperature is 23 DEG C, anodizing time is 32min, voltage is 15V, cathode material is pure stereotype, lock solution is 3g/L nickel salt+1.5g/L promotor+1g/L buffer reagent, lock solution pH value is 7, closure temperature is 33 DEG C, off-period is 22min.
Embodiment 3
S1: take each raw material and carry out founding, and the ingot casting that founding obtains is carried out Homogenization Treatments;
S2: extruding: the ingot homogenization rear car obtained in S1 is removed crust, extrude on a hydraulic press, to container before extruding, overflow mould and ingot casting heat, treat after having extruded that section bar is cooled to less than 50 DEG C, after tension leveling is carried out to section bar, heat-treat, container type of heating is: be warming up to 105 DEG C and after being incubated 0.5h, be warming up to 205 DEG C and after being incubated 0.5h, be warming up to 305 DEG C and after being incubated 0.5h, be warming up to 405 DEG C and after being incubated 0.5h, be warming up to 480 DEG C, overflow mould is positioned over and is incubated 4h in the holding furnace of 500 DEG C and heats, ingot casting is positioned over and is incubated 2h in the holding furnace of 450 DEG C and heats, wherein, the deflection of tension leveling is 1%, extruding rate is 40m/min,
S3: thermal treatment: be positioned in the holding furnace of 148 DEG C in 2h by completing tension leveling section bar in S2, and after being warming up to 187 DEG C with the V-bar of 7.2 DEG C/h, air cooling is to room temperature, wherein, holding furnace rises to the process of 187 DEG C from 148 DEG C, with the rising of temperature, temperature rise rate increases, and temperature and time becomes sinusoidal function relation;
S4: treatment: the heat treated section bar completed in S3 is carried out treatment according to the process route of surface finish → degreasing → washing → alkali cleaning → Warm Wash → washing → bright dipping → washing → anodic oxidation → washing → closed → Warm Wash → drying, wherein, anodic oxidation solution consists of 175g/L sulfuric acid, anodizing temperature is 19 DEG C, anodizing time is 38min, voltage is 13V, cathode material is pure stereotype, lock solution is 5g/L nickel salt+0.5g/L promotor+3g/L buffer reagent, lock solution pH value is 6, closure temperature is 37 DEG C, off-period is 18min.
Embodiment 4
S1: take each raw material and carry out founding, and the ingot casting that founding obtains is carried out Homogenization Treatments;
S2: extruding: the ingot homogenization rear car obtained in S1 is removed crust, extrude on a hydraulic press, to container before extruding, overflow mould and ingot casting heat, treat after having extruded that section bar is cooled to less than 50 DEG C, after tension leveling is carried out to section bar, heat-treat, container type of heating is: be warming up to 97 DEG C and after being incubated 0.6h, be warming up to 197 DEG C and after being incubated 0.7h, be warming up to 297 DEG C and after being incubated 0.6h, be warming up to 397 DEG C and after being incubated 0.7h, be warming up to 470 DEG C, overflow mould is positioned over and is incubated 4h in the holding furnace of 500 DEG C and heats, ingot casting is positioned over and is incubated 1h in the holding furnace of 520 DEG C and heats, wherein, the deflection of tension leveling is 3%, extruding rate is 8m/min,
S3: thermal treatment: be positioned in the holding furnace of 152 DEG C in 3h by completing tension leveling section bar in S2, and after being warming up to 193 DEG C with the V-bar of 8.2 DEG C/h, air cooling is to room temperature, wherein, holding furnace rises to the process of 193 DEG C from 152 DEG C, with the rising of temperature, temperature rise rate increases, and temperature and time becomes sinusoidal function relation;
S4: treatment: the heat treated section bar completed in S3 is carried out treatment according to the process route of surface finish → degreasing → washing → alkali cleaning → Warm Wash → washing → bright dipping → washing → anodic oxidation → washing → closed → Warm Wash → drying, wherein, anodic oxidation solution consists of 167g/L sulfuric acid, anodizing temperature is 21 DEG C, anodizing time is 33min, voltage is 13.5V, cathode material is pure stereotype, lock solution is 3.2g/L nickel salt+0.7g/L promotor+1.2g/L buffer reagent, lock solution pH value is 6.3, closure temperature is 36 DEG C, off-period is 19min.
Embodiment 5
S1: take each raw material and carry out founding, and the ingot casting that founding obtains is carried out Homogenization Treatments;
S2: extruding: the ingot homogenization rear car obtained in S1 is removed crust, extrude on a hydraulic press, to container before extruding, overflow mould and ingot casting heat, treat after having extruded that section bar is cooled to less than 50 DEG C, after tension leveling is carried out to section bar, heat-treat, container type of heating is: be warming up to 103 DEG C and after being incubated 0.6h, be warming up to 202 DEG C and after being incubated 0.63h, be warming up to 301 DEG C and after being incubated 0.5h, be warming up to 403 DEG C and after being incubated 0.7h, be warming up to 460 DEG C, overflow mould is positioned over and is incubated 5h in the holding furnace of 470 DEG C and heats, ingot casting is positioned over and is incubated 1.3h in the holding furnace of 480 DEG C and heats, wherein, the deflection of tension leveling is 1.5%, extruding rate is 20m/min,
S3: thermal treatment: be positioned in the holding furnace of 149 DEG C in 6h by completing tension leveling section bar in S2, and after being warming up to 192 DEG C with the V-bar of 7.5 DEG C/h, air cooling is to room temperature, wherein, holding furnace rises to the process of 192 DEG C from 149 DEG C, with the rising of temperature, temperature rise rate increases, and temperature and time becomes sinusoidal function relation;
S4: treatment: the heat treated section bar completed in S3 is carried out treatment according to the process route of surface finish → degreasing → washing → alkali cleaning → Warm Wash → washing → bright dipping → washing → anodic oxidation → washing → closed → Warm Wash → drying, wherein, anodic oxidation solution consists of 173g/L sulfuric acid, anodizing temperature is 20 DEG C, anodizing time is 37min, voltage is 14.5V, cathode material is pure stereotype, lock solution is 4.3g/L nickel salt+1.3g/L promotor+2.7g/L buffer reagent, lock solution pH value is 6.7, closure temperature is 35 DEG C, off-period is 20min.
Embodiment 6
S1: take each raw material and carry out founding, and the ingot casting that founding obtains is carried out Homogenization Treatments;
S2: extruding: the ingot homogenization rear car obtained in S1 is removed crust, extrude on a hydraulic press, to container before extruding, overflow mould and ingot casting heat, treat after having extruded that section bar is cooled to less than 50 DEG C, after tension leveling is carried out to section bar, heat-treat, container type of heating is: be warming up to 101 DEG C and after being incubated 0.8h, be warming up to 199 DEG C and after being incubated 0.9h, be warming up to 301 DEG C and after being incubated 0.7h, be warming up to 401 DEG C and after being incubated 0.6h, be warming up to 470 DEG C, overflow mould is positioned over and is incubated 5h in the holding furnace of 490 DEG C and heats, ingot casting is positioned over and is incubated 1.7h in the holding furnace of 500 DEG C and heats, wherein, the deflection of tension leveling is 1.6%, extruding rate is 30m/min,
S3: thermal treatment: be positioned in the holding furnace of 151 DEG C in 2.5h by completing tension leveling section bar in S2, and after being warming up to 189 DEG C with the V-bar of 7.8 DEG C/h, air cooling is to room temperature, wherein, holding furnace rises to the process of 189 DEG C from 151 DEG C, with the rising of temperature, temperature rise rate increases, and temperature and time becomes sinusoidal function relation;
S4: treatment: the heat treated section bar completed in S3 is carried out treatment according to the process route of surface finish → degreasing → washing → alkali cleaning → Warm Wash → washing → bright dipping → washing → anodic oxidation → washing → closed → Warm Wash → drying, wherein, anodic oxidation solution consists of 171g/L sulfuric acid, anodizing temperature is 21 DEG C, anodizing time is 35min, voltage is 14V, cathode material is pure stereotype, lock solution is 4.2g/L nickel salt+1.1g/L promotor+1.9g/L buffer reagent, lock solution pH value is 6.6, closure temperature is 34 DEG C, off-period is 20min.
In embodiment 1-6, ferro element is non-Addition ofelements, and it is mainly derived from mould in fusion process and uses inevitably introducing; In extrusion process, before extruding, container, overflow mould and ingot casting are heated, be conducive to being out of shape in alloy extrusion process, intermittent heat is carried out to container, container can be made to heat up more even, extrusion process, along with the distortion of alloy, be parallel in the direction of extrusion, crystal grain is elongated, and grain-size obtains refinement; By the optimization to thermal treatment process, control Mg
2the precipitation process of Si strengthening phase, improves Mg
2si strengthening phase quantity, reduce Mg
2si strengthening phase size also makes Mg
2si strengthening phase distributional pattern is more reasonable, alloy is made to obtain better mechanical property, by the optimization to top layer treatment process, the uniform oxide film of one deck is formed at aluminium alloy section surface after sulphuric acid anodizing, there is cellular vesicular structure on the surface in oxide film, when carrying out nickel salt and closing, because confining liquid pH value is 6.5, can hydrolysis reaction be there is in oxide film micropore, produce Ni (OH)
2precipitation, reaction formula is: Ni
2++ 2H
2o → Ni (OH)
2↓+2H
+, the promotor in confining liquid can accelerate above-mentioned reaction, and meanwhile, promotor can be dissolved oxide film hole wall, the Al of dissolving
3+the chemical conversion film with complex form can be formed, the Ni (OH) that reaction generates
2and Al
2o
3be embedded in fenestra, thus oxide film micropore is closed, make the smooth densification of anode oxide film.
In embodiment 1-6, nickel salt described in repeated test five groups closes the tensile strength of anodized aluminum alloy section bar, sand trial wear factor, drop alkali test and unit elongation, and the parameter value of averaging of income data and aluminium alloy extrusions 6063-T6 anodic oxidation section bar is listed in table 2.
Table 2 embodiment 1-6 and typical 6063-T6 anodic oxidation section bar mechanical performance parameter
From the test data of embodiment 1-6 in above-mentioned table 1 and typical 6063-T6 anodic oxidation section bar tensile strength, sand trial wear factor, drop alkali test and unit elongation, no matter single performance or over-all properties, nickel salt described in the present invention is closed anodized aluminum alloy section bar and is all better than typical 6063-T6 anodic oxidation section bar, has excellent mechanical property, wear resistance and solidity to corrosion.
Claims (4)
1. an anodized aluminum alloy section bar closed by nickel salt, it is characterized in that, its composition component comprises by weight percentage: Mg:0.75-0.90; Si:0.5-0.6; Cu:0.10-0.14; Mn:0.20-0.25; Ti:0-0.1; Cr:0-0.1; Fe:0.1-0.3; Zn:0.20-0.28; Surplus is Al, and prepares according to the following steps:
S1: take each raw material and carry out founding, and the ingot casting that founding obtains is carried out Homogenization Treatments;
S2: extruding: the ladle barrow obtained in S1 is removed crust, extrude on a hydraulic press, to container before extruding, overflow mould and ingot casting heat, treat after having extruded that section bar is cooled to less than 50 DEG C, tension leveling is carried out to section bar, container type of heating is: be warming up to 95-105 DEG C and after being incubated 0.5-1h, be warming up to 195-205 DEG C and after being incubated 0.5-1h, be warming up to 295-305 DEG C and after being incubated 0.5-1h, be warming up to 395-405 DEG C and after being incubated 0.5-1h, be warming up to 450-480 DEG C, overflow mould is positioned over and is incubated 4-8h in the holding furnace of 450-500 DEG C and heats, ingot casting is positioned over and is incubated 1-2h in the holding furnace of 450-520 DEG C and heats, wherein, the deflection of tension leveling is 1-3%, extruding rate is 8-40m/min,
S3: thermal treatment: be positioned over completing tension leveling section bar in S2 in 1-8h in the holding furnace of 145-155 DEG C, and after being warming up to 185-195 DEG C with the V-bar of 7-9 DEG C/h, air cooling is to room temperature;
S4: treatment: the heat treated section bar completed in S3 is carried out treatment according to the process route of surface finish → degreasing → washing → alkali cleaning → Warm Wash → washing → bright dipping → washing → anodic oxidation → washing → closed → Warm Wash → drying, wherein, anodic oxidation solution consists of 165-175g/L sulfuric acid, anodizing temperature is 19-23 DEG C, anodizing time is 32-38min, voltage is (14 ± 1) V, cathode material is pure stereotype, lock solution is 3-5g/L nickel salt+0.5-1.5g/L promotor+1-3g/L buffer reagent, lock solution pH value is 6-7, closure temperature is 33-37 DEG C, off-period is 18-22min.
2. anodized aluminum alloy section bar closed by nickel salt according to claim 1, it is characterized in that, in its moiety, the mass ratio of Mg and Si is (1.2-1.5): 1.
3. anodized aluminum alloy section bar closed by nickel salt according to claim 1, it is characterized in that, in step s3, is positioned over completing tension leveling section bar in S2 in the holding furnace of 148-152 DEG C in 2-3h.
4. anodized aluminum alloy section bar closed by nickel salt according to claim 1, it is characterized in that, in step s3, holding furnace rises to the process of 185-195 DEG C from 145-155 DEG C, with the rising of temperature, temperature rise rate increases, and temperature and time becomes sinusoidal function relation.
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CN106676603A (en) * | 2016-05-31 | 2017-05-17 | 陈方雄 | Door/window hardware product processing technology adopting 6xxx series forged aluminum alloy material |
CN105970037A (en) * | 2016-07-15 | 2016-09-28 | 南南铝业股份有限公司 | Aluminum alloy for pedestrian bridges and preparation method thereof |
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Application publication date: 20160106 |