CN1831207A - Method for producing temp.-resistance, pressure-resistance oxide membrane aluminium wire and aluminium foil - Google Patents
Method for producing temp.-resistance, pressure-resistance oxide membrane aluminium wire and aluminium foil Download PDFInfo
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- CN1831207A CN1831207A CN 200610017456 CN200610017456A CN1831207A CN 1831207 A CN1831207 A CN 1831207A CN 200610017456 CN200610017456 CN 200610017456 CN 200610017456 A CN200610017456 A CN 200610017456A CN 1831207 A CN1831207 A CN 1831207A
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Abstract
The invention relates to a manufacturing method for heat-proof pressure-proof aluminum wire aluminum foil. The technology process is that: taking softening and cleaning process to the bare aluminum wire aluminum foil or aluminum band, taking continuously anode oxidation by 100-1000HZ 38V AC voltage at 2.6 +/-0.3m/min in electrolytic tank electrolyte; putting into the solution made up of water, vitriol and oxalic acid to form 0.02-0.04mm A1203 oxide film, washing and drying. The invention has thick aluminum film, good heat proof pressure proof ability, low cost, high efficiency, good safety, and has great application prospect.
Description
One, technical field
The present invention relates to the production method of the membrane aluminium wire and aluminium foil that a kind of coiling electrical equipment uses, particularly a kind of production method of heat resisting and pressure resisting oxide membrane aluminium wire and aluminium foil.
Two, background technology
Membrane aluminium wire and aluminium foil is to produce electrical equipment material commonly used, as welding machine, electrical equipments such as transformer, tramp iron separator, electro-magnet, rectifier all need with membrane aluminium wire and aluminium foil (band) coiling line group, but in use, these materials itself are on-insulated, need be coated with one deck insulant (such as insullac) or bag one deck insulation paper at its outside surface during use, like this, can produce following problem:
1, the heat resistance of insulating material and cost are the major issues in electric equipment products production and the use, directly affect electric property, use properties and the production cost of electric equipment products, at present, the heatproof limit of the insulating material of widely used lacquer or master mode is all below 120 ℃, insulating material more than 120 ℃ because of cost is too high can not widespread usage, use is only just arranged on extraordinary electrical equipment;
2, because of causing transformer winding volume, membrane aluminium wire and aluminium foil (band) outsourcing insulation paper increases, the coiling trouble, and also this transformer working efficiency is poor, the power consumption big, demands urgently reforming.
For this reason, the inventor had once developed a kind of oxide membrane aluminium wire and aluminium foil (application number 93118427.4), but in use still there are the following problems: the product alumina layer is thin, and heat resisting and pressure resisting is not enough, the cost height, energy consumption is big, though the membrane aluminium wire and aluminium foil than lacquer or insulation master mode has obvious improvement, but still can only use on the part electric equipment products, so be difficult to effectively apply, must be to its further improvement, to satisfy general actual needs in the production.
Three, summary of the invention
For above-mentioned situation, the present invention's purpose just provides a kind of production method of improved heatproof proof voltage oxide membrane aluminium wire and aluminium foil, can effectively solve the heatproof proof voltage of oxide membrane aluminium wire and aluminium foil or aluminium strip and the problem that reduces production costs, the technical scheme of its solution is, bare aluminium wire aluminium foil or aluminium strip are softened the insulation processing, carry out decontamination with scavenging solution again, after water is rinsed well, in cell bath, use the interchange 38V operating voltage of 100-1000HZ (hertz), carried out continuously anodic oxidation 2.5-3 minute with the speed of per minute 2.6 ± 0.3m, oxidation is placed in the solution that is made up of water and sulfuric acid and oxalic acid, makes it generate the Al of one deck 0.02-0.04mm
2O
3Oxide-film is rinsed oven dry well and is got final product, and the present invention improves the science of original production method, its product quality performance indications more correspond to actual needs, and particularly adopt under the new process conditions, especially use the operating voltage of 100-1000HZ, anodic oxidation speed is fast, the aluminium thickness, and the heat resisting and pressure resisting performance is better, cost, work efficiency improve, the electric equipment products volume is little, and performance is good, uses safety, that popularizing application prospect is wide to the existing creationary improvement of method.
Four, embodiment
Below in conjunction with practical situation, the specific embodiment of the present invention is elaborated.
Provided by the aforementioned techniques scheme, the present invention is: select to meet the bare aluminium wire that JB648-77 requires, aluminium foil or aluminium strip, the smooth cleaning of aluminium material surface, there is not the scuffing of colliding with, pit, burr and stick up the defectives such as skin, after aluminium is chosen, placing 320-340 ℃ of lower insulation to carry out annealing softening in 9 ± 0.2 hours aluminium processes, afterwards, carried out decontamination 1-3 minute with 65-70 ℃ scavenging solution again, its scavenging solution is by water 1000ml, but tertiary sodium phosphate 40 grams are restrained into property sodium 8, the aqueous solution of nitric acid of putting into concentration after the purification and be 30 grams per liters carries out and 1-3 minute, after water washes and wipes clean, be 100-1000HZ with frequency converter with the alternating current frequency conversion of 50HZ (hertz), at the 35-38V working volts alternating current, current density is 8-12A/dm
3Alternating current electrolysis liquid before and after in the groove, carried out continuously anodic oxidation 2.5-3 minute with the speed that 2.6 ± 0.3m/ divides, anodic oxidation with front groove solution take weight ratio as water: sulfuric acid: oxalic acid=100: 17-18: 6 make, temperature 31-33 ℃, pit solution is by the water in weight ratio: sulfuric acid: oxalic acid=make at 100: 19: 6, temperature is 29-31 ℃, after groove oxidation before and after the anode, makes the Al of aluminum steel or aluminium foil or aluminium strip Surface Creation one deck 0.02-0.04mm (being 200-400um)
2O
3Oxide-film after water is rinsed well, gets final product 160 ± 2 ℃ of lower oven dry again.
For example, in force, can specifically adopt following production technology:
Bare aluminum steel with surface smoothing, be placed on and softened under 330 ℃ 9 hours, use again 68 ℃ scavenging solution degreasing 2.5 minutes, but scavenging solution is to be mixed by tertiary sodium phosphate 40 gram property sodium, 8 grams and water 1000ml to make, the aqueous solution of nitric acid of putting into concentration after the purification again and be 30 grams per liters carries out and 2.5 minutes, after water rushes Xian and wipes clean in flushed channel, being the alternating current of 400HZ with frequency converter with the alternating current frequency conversion of 50HZ, is that 38V, current density are 10A/dm at 400HZ, voltage
3Alternating current electrolysis liquid before and after in the groove, the linear velocity that goes out with per minute 2.6m is carried out oxidation 2.5 minutes continuously, groove electrolyte is restrained into by water 100ml, sulfuric acid 17 grams, oxalic acid 6 before the oxidation, oxidation pit electrolyte is restrained into oxalic acid 6 by water 100ml, sulfuric acid 18 grams, front groove temperature is 32 ℃, the pit temperature is 30 ℃, the Al of aluminum steel Surface Creation 0.035 ± 0.003
2O
3Oxide-film uses earlier 25 ℃ of following cold water flush after 10 minutes, uses the hot water injection 5 minutes more than 60 ℃ again, after wiping clean, puts into 160 ℃ electrothermal furnace oven dry 1.3 minutes, take-up lower wall (finished product) for subsequent use.
From the above, the present invention is except that former step operation, still under the strict process condition, carry out, workable, contrast after tested, its good product quality, performance is safe and reliable, oxidation bed thickness and firm, original production method oxidation bed thickness is 0.007-0.01mm, oxidation bed thickness of the present invention is 0.02-0.04mm, puncture withstand voltage reaching more than the 280V, improve more than the 100V than existing product, the temperature that is perfectly safe reaches more than 280 ℃ (former have only 250 ℃), owing to adopt the alternating-current of 100-1000HZ in the oxidation, this just finds in repetitious practice and creative test, former method is to adopt 50HZ, owing to adopt high-frequency alternating current, former oxidizing process condition all has change in various degree, reduced the requirement of original processing condition, material cost reduces, contrast according to statistics, and cost has reduced more than 30%, work efficiency improves more than 2 times, saves energy has obtained the good technique effect of originally not expected more than 2 times, and this invention is practical, be easy to popularize, be to the creationary improvement of original production method, opened up wide application prospect, it is applied and must make huge contribution for producing high-quality electric equipment products.
Claims (2)
1, the production method of heat resisting and pressure resisting oxide membrane aluminium wire and aluminium foil, it is characterized in that, place 320-340 ℃ of lower insulation to carry out annealing softening in 9 ± 0.2 hours on the bare aluminium wire aluminium foil, afterwards, carried out decontamination 1-3 minute with 65-70 ℃ scavenging solution, but its scavenging solution is to be restrained into property sodium 8 by water 1000ml, tertiary sodium phosphate 40 grams, the aqueous solution of nitric acid of putting into concentration after the purification and be 30 grams per liters carries out and 1-3 minute, after water washes and wipes clean, being 100-1000HZ with frequency converter with the alternating current frequency conversion of 50HZ, is 8-12A/dm in 35-38V working volts alternating current, current density
3Alternating current electrolysis liquid before and after in the groove, carried out continuously anodic oxidation 2.5-3 minute with the speed that 2.6 ± 0.3m/ divides, anodic oxidation with front groove solution take weight ratio as water: sulfuric acid: oxalic acid=100: 17-18: 6 make, temperature 31-33 ℃, pit solution is by the water in weight ratio: sulfuric acid: oxalic acid=make at 100: 19: 6, temperature is 29-31 ℃, after groove oxidation before and after the anode, makes the Al of aluminum steel or aluminium foil or aluminium strip Surface Creation one deck 0.02-0.04mm
2O
3Oxide-film is after water is rinsed well, again 160 ± 2 ℃ of lower oven dry.
2, the production method of heat resisting and pressure resisting oxide membrane aluminium wire and aluminium foil according to claim 1, it is characterized in that, with the bare aluminium wire aluminium foil, be placed on and softened under 330 ℃ 9 hours, use again 68 ℃ scavenging solution degreasing 2.5 minutes, scavenging solution is by tertiary sodium phosphate 40 grams, but property sodium 8 grams and water 1000ml are mixed and make, the aqueous solution of nitric acid of putting into concentration after the purification again and be 30 grams per liters carries out and 2.5 minutes, after water rushes Xian and wipes clean in flushed channel, be the alternating current of 400HZ with frequency converter with the alternating current frequency conversion of 50HZ, at 400HZ, voltage is 38V, current density is 10A/dm
3Alternating current electrolysis liquid before and after in the groove, the linear velocity that goes out with per minute 2.6m is carried out oxidation 2.5 minutes continuously, groove electrolyte is restrained into by water 100ml, sulfuric acid 17 grams, oxalic acid 6 before the oxidation, oxidation pit electrolyte is restrained into oxalic acid 6 by water 100ml, sulfuric acid 18 grams, front groove temperature is 32 ℃, the pit temperature is 30 ℃, the Al of aluminum steel Surface Creation 0.035 ± 0.003
2O
3Oxide-film uses earlier 25 ℃ of following cold water flush after 10 minutes, uses the hot water injection 5 minutes more than 60 ℃ again, after wiping clean, puts into 160 ℃ electrothermal furnace oven dry 1.3 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100174564A CN100487169C (en) | 2006-02-24 | 2006-02-24 | Method for producing temperature-resistance, pressure-resistance oxide membrane aluminium wire and aluminium foil |
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| CNB2006100174564A CN100487169C (en) | 2006-02-24 | 2006-02-24 | Method for producing temperature-resistance, pressure-resistance oxide membrane aluminium wire and aluminium foil |
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| CN100487169C CN100487169C (en) | 2009-05-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143588A (en) * | 2013-02-25 | 2013-06-12 | 宁波市雪银铝业有限公司 | High-strength aluminium wire producing method |
| CN105088308A (en) * | 2015-10-10 | 2015-11-25 | 中国计量学院 | Environment-friendly anodizing process for high-copper high-silicon aluminum alloy |
| CN113862749A (en) * | 2021-09-30 | 2021-12-31 | 新乡市日恒电气有限公司 | Epoxy film electromagnetic wire and aluminum skin processing technology |
-
2006
- 2006-02-24 CN CNB2006100174564A patent/CN100487169C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143588A (en) * | 2013-02-25 | 2013-06-12 | 宁波市雪银铝业有限公司 | High-strength aluminium wire producing method |
| CN103143588B (en) * | 2013-02-25 | 2015-07-15 | 宁波市雪银铝业有限公司 | High-strength aluminium wire producing method |
| CN105088308A (en) * | 2015-10-10 | 2015-11-25 | 中国计量学院 | Environment-friendly anodizing process for high-copper high-silicon aluminum alloy |
| CN105088308B (en) * | 2015-10-10 | 2017-10-03 | 中国计量学院 | High-copper silumin anodic oxidation environment-protective process |
| CN113862749A (en) * | 2021-09-30 | 2021-12-31 | 新乡市日恒电气有限公司 | Epoxy film electromagnetic wire and aluminum skin processing technology |
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| CN100487169C (en) | 2009-05-13 |
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Granted publication date: 20090513 Termination date: 20140224 |