CN101966692A - Surface shot blasting process for improving corrosion resistance of aluminum and aluminum alloy - Google Patents
Surface shot blasting process for improving corrosion resistance of aluminum and aluminum alloy Download PDFInfo
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- CN101966692A CN101966692A CN 201010552853 CN201010552853A CN101966692A CN 101966692 A CN101966692 A CN 101966692A CN 201010552853 CN201010552853 CN 201010552853 CN 201010552853 A CN201010552853 A CN 201010552853A CN 101966692 A CN101966692 A CN 101966692A
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- Prior art keywords
- shot
- peening
- aluminium
- shot blasting
- corrosion resistance
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 65
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 39
- 230000007797 corrosion Effects 0.000 title claims abstract description 33
- 238000005260 corrosion Methods 0.000 title claims abstract description 33
- 238000005422 blasting Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 36
- 238000005480 shot peening Methods 0.000 claims description 46
- 239000004411 aluminium Substances 0.000 claims description 44
- 239000005308 flint glass Substances 0.000 claims description 8
- 239000011521 glass Substances 0.000 abstract description 4
- 239000011324 bead Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract 1
- 238000005488 sandblasting Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 235000010210 aluminium Nutrition 0.000 description 41
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 6
- 239000002689 soil Substances 0.000 description 5
- 239000000956 alloy Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- -1 aluminium-copper-magnesium Chemical compound 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 241000370738 Chlorion Species 0.000 description 1
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention relates to a surface shot blasting process for improving corrosion resistance of aluminum and aluminum alloy. The process can improve the corrosion resistance of the aluminum and the aluminum alloy, prolong the effective life of the aluminum and the aluminum alloy and expand the application field of the aluminum and the aluminum alloy. In the process, shot blasting is performed by using a pressure type sandblasting machine and shot blasting equipment, wherein shot blasting materials are glass beads with particle size of No. 20 to 120; the pressure of compressed air is 0.05 to 0.5MPa during the shot blasting; the flow rate of the shot blasting material is 0.05 to 1kg/minute; and the movement speed of a shot blasting spray head is 0.5 to 5m/minute.
Description
Technical field
The present invention relates to a kind of shot blasting on surface technology, particularly a kind of shot blasting on surface technology that improves aluminium and aluminium alloy corrosion resistance.
Background technology
Though aluminium is the very big metal of chemism, can generate the oxide-film of one deck densification under field conditions (factors), can stop anode reaction, make aluminium not continue to corrode.The oxide-film of general aluminium is to be stable in 5～8 the aqueous solution in pH value, but is 5～8 and exists under the condition of chlorion that in the pH value it corrodes increase, even origination point corrodes.Aluminium corrosion resistance in neutral aqueous solution is good, but then degenerates in the muriatic aqueous solution.In acidic aqueous solution, with the increase of hydrogen ion concentration, corrosion is accelerated.Destruction owing to oxide-film in alkaline aqueous solution is corroded, but obtains protection because of oxide-film regeneration in ammoniacal liquor; Aluminium in, in the basic soil, corrosion mainly occurs in the oxide-film breakage, mainly shows as local corrosion, serious even perforation.
The electrode potential of aluminium is lower, and in medium, when contacting than its high metal with electrode potential, aluminium can be corroded as anode, especially then corrosion rapidly in the aqueous solution of high acid of conductance or salt.Ordinary circumstance, the purity of aluminium is high more, and corrosion resistance is good more.The duralumin, hard alumin ium alloy corrosion resistance of aluminium-copper and aluminium-copper-magnesium system is low, aluminium-zinc-magnesium-copper system and aluminium-zinc-magnesium are that high-strength alloy has stress corrosion inclination, in order to enlarge the application of aluminium and aluminium alloy, improve the useful life of aluminium and aluminium alloy, should improve the corrosion resistance of aluminium and aluminium alloy.
The method that improves the corrosion resistance of aluminium alloy at present has differential arc oxidation, anodic oxidation and chemical oxidation.Before pre-oxidation, the someone adopts blasting technology to remove the greasy dirt of aluminum alloy surface, alkaline matter etc.With the surface treatment procedure of shot-blast process before, simple to technological requirement as pre-oxidation.Mention in the relevant document blasting technology is applied to the steel surface treatment, improve steel superficial layer hardness and intensity, change stress state, improve the fatigue strength of material and prolong fatigue life, and obtained effect preferably.The research that blasting technology is applied to improve the aluminum alloy materials corrosion resistance does not appear in the newspapers, and mainly is because the hardness of aluminium alloy is lower, improves the corrosion resistance of aluminium alloy by blasting technology, and to the stress state of shot-peening rear surface, roughness etc. have higher requirements.Accurate to the shot-blast process parameter request, the ball material is selected strict, and difficulty is bigger.
Summary of the invention
The objective of the invention is to address the above problem, a kind of shot blasting on surface technology that improves aluminium and aluminium alloy corrosion resistance is provided, it can improve the corrosion resistance of aluminium and aluminium alloy, prolongs the useful life of aluminium and aluminium alloy, enlarges the application of aluminium and aluminium alloy.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of shot blasting on surface technology that improves aluminium and aluminium alloy corrosion resistance, it adopts pressure type sandblast machine and ceramic nozzle to carry out shot-peening; It is 40～60 flint glass F balls that shot-peening ball material adopts granularity; Compressed air pressure is 0.1～0.2MPa during shot-peening; Shot-peening ball materials flow amount is 0.2～0.3kg/min; Shot-peening shower nozzle translational speed is 1～3m/min.
It is 40 flint glass F balls that described shot-peening ball material adopts granularity; Compressed air pressure is 0.1MPa during shot-peening; Shot-peening ball materials flow amount is 0.2kg/min; Shot-peening shower nozzle translational speed is 1m/min.
It is 60 flint glass F balls that described shot-peening ball material adopts granularity; Compressed air pressure is 0.2MPa during shot-peening; Shot-peening ball materials flow amount is 0.3kg/min; Shot-peening shower nozzle translational speed is 3m/min.
Be ready to treat shot-peening aluminium and aluminium alloy,, open air compressor, adjust the pressure of Compressed Gas, adjust ball materials flow amount the glass ball material sand jar of packing into, the beginning shot-peening, the shot blasting on surface roughness of the aluminium of acquisition and aluminium alloy is Ra1～4 μ m.
Beneficial effect of the present invention is: aluminium and aluminum alloy surface are carried out bead, make tissue defects in the processing of aluminium and aluminium alloy up by shot blasting on surface, make aluminium and aluminum alloy surface change over uniform compressive stress state by original uneven tensile stress state, reduced the oxide film breakdown probability that generates under the tension, and oxide-film that generates under the compression and high base strength enhancing, the oxide-film densification; Shot-peening has also played the effect of crystal grain thinning, by the bond strength of crystal grain thinning enhancing matrix and oxide-film, improves adaptivity, toughness and the self-healing ability of oxide-film, thereby improves the corrosion resistance of aluminium and aluminium alloy.
Compared with the prior art, the present invention can obviously improve the corrosion resistance of aluminium and aluminium alloy, and the useful life that increases aluminium and aluminium alloy enlarges the application of aluminium and aluminium alloy.
The specific embodiment
The present invention will be further described below in conjunction with specific embodiment.
Embodiment 1:
A kind of shot blasting on surface technology that improves aluminium and aluminium alloy corrosion resistance is:
(1) adopts pressure type sandblast machine and ceramic nozzle;
(2) described aluminium and aluminum alloy surface shot-peening ball material adopt 40 flint glass F balls;
(3) described aluminium and aluminum alloy surface shot-peening compressed air pressure are 0.1MPa;
(4) described aluminium and aluminum alloy surface shot-peening ball materials flow amount are 0.2kg/min;
(5) described aluminium and aluminum alloy surface shot-peening shower nozzle translational speed are 1m/min.
Treat that the shot-peening aluminum alloy materials is that the trade mark is 2219 (GB/T3190-1996), specification is the aluminium strip of 50mm * 5mm * 200mm, its preparation method is with the glass ball material sand jar of packing into, open air compressor, adjust the pressure of Compressed Gas by above technology, adjust ball materials flow amount, the beginning shot-peening, the shot blasting on surface roughness of the aluminium of acquisition and aluminium alloy is Ra1～2 μ m
Will be through the aluminium alloy of shot-peening and untreated aluminium alloy earthing material as test material, with the soil in the transformer station of Jinan as test(ing) medium, the corrosion resistance effect of carrying out two kinds of earthing materials in the laboratory is relatively: the result is presented at pH value and equals to pass through the corrosion rate≤0.1gdm of the aluminium alloy earthing material of shot-peening and pre-oxidation treatment in 8 the alkaline soil
-2A
-1, the corrosion rate 〉=0.2gdm of undressed aluminium alloy earthing material
-2A
-1
Embodiment 2:
A kind of shot blasting on surface technology that improves aluminium and aluminium alloy corrosion resistance is:
(1) adopts pressure type sandblast machine and ceramic nozzle;
(2) described aluminium and aluminum alloy surface shot-peening ball material adopt 60 flint glass F balls;
(3) described aluminium and aluminum alloy surface shot-peening compressed air pressure are 0.2MPa;
(4) described aluminium and aluminum alloy surface shot-peening ball materials flow amount are 0.3kg/min;
(5) described aluminium and aluminum alloy surface shot-peening shower nozzle translational speed are 3m/min.
Treat that the shot-peening aluminum alloy materials is that the trade mark is 2219 (GB/T3190-1996), specification is the aluminium strip of 50mm * 5mm * 200mm, its preparation method is with the glass ball material sand jar of packing into, open air compressor, adjust the pressure of Compressed Gas by above technology, adjust ball materials flow amount, the beginning shot-peening, the shot blasting on surface roughness of the aluminium of acquisition and aluminium alloy is Ra2～3 μ m
Will be through the aluminium alloy of shot-peening and untreated aluminium alloy earthing material as test material, with the alkaline soil in the transformer station of Jinan as test(ing) medium, the corrosion resistance effect of carrying out two kinds of earthing materials in the laboratory is relatively: the result is presented at pH value and equals to pass through the corrosion rate≤0.09gdm of the aluminium alloy earthing material of shot-peening and pre-oxidation treatment in 8 the alkaline soil
-2A
-1, the corrosion rate 〉=0.2gdm of undressed aluminium alloy earthing material
-2A
-1
Claims (3)
1. a shot blasting on surface technology that improves aluminium and aluminium alloy corrosion resistance is characterized in that, its employing pressure type sandblast machine installs shot blasting equipment additional and carries out shot-peening; It is 20～120 flint glass F balls that shot-peening ball material adopts granularity; Compressed air pressure is 0.05～0.5MPa during shot-peening; Shot-peening ball materials flow amount is 0.05～1kg/min; Shot-peening shower nozzle translational speed is 0.5～5m/min.
2. the shot blasting on surface technology of raising aluminium as claimed in claim 1 and aluminium alloy corrosion resistance is characterized in that, it is 40 flint glass F balls that described shot-peening ball material adopts granularity; Compressed air pressure is 0.15MPa during shot-peening; Shot-peening ball materials flow amount is 0.1kg/min; Shot-peening shower nozzle translational speed is 1m/min.
3. the shot blasting on surface technology of raising aluminium as claimed in claim 1 and aluminium alloy corrosion resistance is characterized in that, it is 60 flint glass F balls that described shot-peening ball material adopts granularity; Compressed air pressure is 0.25MPa during shot-peening; Shot-peening ball materials flow amount is 0.3kg/min; Shot-peening shower nozzle translational speed is 2m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010552853 CN101966692A (en) | 2010-11-22 | 2010-11-22 | Surface shot blasting process for improving corrosion resistance of aluminum and aluminum alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010552853 CN101966692A (en) | 2010-11-22 | 2010-11-22 | Surface shot blasting process for improving corrosion resistance of aluminum and aluminum alloy |
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| Publication Number | Publication Date |
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| CN101966692A true CN101966692A (en) | 2011-02-09 |
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| CN 201010552853 Pending CN101966692A (en) | 2010-11-22 | 2010-11-22 | Surface shot blasting process for improving corrosion resistance of aluminum and aluminum alloy |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107866743A (en) * | 2017-11-29 | 2018-04-03 | 无锡透平叶片有限公司 | A kind of titanium alloy blade and its processing method |
| CN111136588A (en) * | 2018-11-06 | 2020-05-12 | 有研工程技术研究院有限公司 | Method for improving surface quality of aluminum matrix composite |
| CN113400199A (en) * | 2021-07-27 | 2021-09-17 | 燕山大学 | Surface shot blasting method for zirconium and zirconium alloy |
| US20220411910A1 (en) * | 2021-06-29 | 2022-12-29 | Sintokogio, Ltd. | Method of manufacturing stress reference piece |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1271727A1 (en) * | 1985-03-28 | 1986-11-23 | Минский Филиал Государственного Проектно-Технологического И Экспериментального Института "Оргстанкинпром" | Device for hardening workpiece with flow of balls |
| JPH0365439B2 (en) * | 1984-07-10 | 1991-10-11 | ||
| CN1112045A (en) * | 1995-03-29 | 1995-11-22 | 河南省正光实业(有限)总公司 | Technique for surface treatment of aluminium alloy sections |
| BR0005757A (en) * | 2000-12-07 | 2002-09-17 | Michelin Soc Tech | Manufacturing process of a metal part, and, wheel designed for running a vehicle |
| CN1896336A (en) * | 2006-06-14 | 2007-01-17 | 天津锐新电子热传技术有限公司 | Sand-blast treatment for anode oxidation pretreatment aluminum-alloy sections and construction |
| CN101215680A (en) * | 2008-01-08 | 2008-07-09 | 上海大学 | Aluminum alloy die-casting die steel surface shot blasting strengthening treatment method |
-
2010
- 2010-11-22 CN CN 201010552853 patent/CN101966692A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0365439B2 (en) * | 1984-07-10 | 1991-10-11 | ||
| SU1271727A1 (en) * | 1985-03-28 | 1986-11-23 | Минский Филиал Государственного Проектно-Технологического И Экспериментального Института "Оргстанкинпром" | Device for hardening workpiece with flow of balls |
| CN1112045A (en) * | 1995-03-29 | 1995-11-22 | 河南省正光实业(有限)总公司 | Technique for surface treatment of aluminium alloy sections |
| BR0005757A (en) * | 2000-12-07 | 2002-09-17 | Michelin Soc Tech | Manufacturing process of a metal part, and, wheel designed for running a vehicle |
| CN1896336A (en) * | 2006-06-14 | 2007-01-17 | 天津锐新电子热传技术有限公司 | Sand-blast treatment for anode oxidation pretreatment aluminum-alloy sections and construction |
| CN101215680A (en) * | 2008-01-08 | 2008-07-09 | 上海大学 | Aluminum alloy die-casting die steel surface shot blasting strengthening treatment method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107866743A (en) * | 2017-11-29 | 2018-04-03 | 无锡透平叶片有限公司 | A kind of titanium alloy blade and its processing method |
| CN111136588A (en) * | 2018-11-06 | 2020-05-12 | 有研工程技术研究院有限公司 | Method for improving surface quality of aluminum matrix composite |
| US20220411910A1 (en) * | 2021-06-29 | 2022-12-29 | Sintokogio, Ltd. | Method of manufacturing stress reference piece |
| CN113400199A (en) * | 2021-07-27 | 2021-09-17 | 燕山大学 | Surface shot blasting method for zirconium and zirconium alloy |
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Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121219 |
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Effective date of registration: 20121219 Address after: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Applicant after: Shandong Research Inst. of Electric Power Applicant after: State Grid Corporation of China Address before: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Applicant before: Shandong Research Inst. of Electric Power |
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Application publication date: 20110209 |