CN1111681A - Technology of sectional type negative pressure anneal oil removing for aluminium material - Google Patents
Technology of sectional type negative pressure anneal oil removing for aluminium material Download PDFInfo
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- CN1111681A CN1111681A CN 95103194 CN95103194A CN1111681A CN 1111681 A CN1111681 A CN 1111681A CN 95103194 CN95103194 CN 95103194 CN 95103194 A CN95103194 A CN 95103194A CN 1111681 A CN1111681 A CN 1111681A
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Abstract
The invented technology firstly de-oils under the low temp. then conducts the regulation of mechanical property under high temp.. The concrete processes are as follows: (1) After the aluminium products are put in the annealing furnace, the high temp. blower fan is used to extract gas from the furnace 1-3 times under the temp. of 160-360 deg.C to make the gas pressure in furnace be negative relative to the atmospheric pressure. After each time of gas extraction, the furnace gas must be changed, that is stopping gas extraction, and letting the air enter the furnace to make the gas pressure balancde the atmospheric pressure. (2) After the last gas changing, the furnace temp. is raised to 380-480 deg.C for heat preservation annealing and conducting the mechanical regulation. (3) The finished product is obtained after cooling and discharging.
Description
The present invention relates to the thermal treatment and the surface degreasing treatment process of aluminium.
Extensive application along with aluminium, the aluminium of some special purposes, as the cable aluminium foil, the medicine food Packaging Aluminum Foil, aluminiums such as surface coloring aluminium sheet, except that should having proper mechanical capacity and higher smooth finish, also require in annealing process, ROLLING OIL to be removed clean, to guarantee the final quality product of user.
At present, all adopt both at home and abroad generally the way of long-time insulation to guarantee complete oil removing, the eliminating of oil gas employing air blast supercharging deflated mode in stove in the stove.Life-time service is the result show, the product mechanical property is general only to need annealing in 10～15 hours can reach GB (GB3198-82) requirement, and the oil removing time then reaches 35～48 hours (to thickness 0.009
-0.150mm aluminium).The adjustment of mechanical property and oil removing are carried out synchronously, and therefore, the plenty of time is wasted in the oil removing process, also causes waste of electric energy.Past attempts was done a large amount of adjustment and improvement, but was produced little effect annealing process, aluminium charging mode.
Purpose of the present invention is to overcome the shortcoming of prior art, proposes a kind of new anneal oil removing technology, fundamentally to solve the contradiction of " improve deoiling effect and guarantee quality product " and " enhancing productivity ".Adopt technology of the present invention, the comparable prior art of annealing time reduces 30～50%, and mechanical property also makes moderate progress simultaneously, satisfying the industrial production requirement aspect quality product and the production efficiency two, also can reduce power consumption simultaneously.
Technical scheme of the present invention is to utilize the negative pressure exhaust principle opposite with prior art supercharging venting principleand in the oil removing process, to improve oil removal efficiency.
Technology of the present invention comprises oil removing and annealing, it is characterized in that: sectional type negative pressure anneal oil removing, be about to oil removing and mechanical property adjustment and carry out in two steps, first low temperature oil removing, after carry out the high-temperature mechanical property adjustment.Concrete operation is: after (1) packs into aluminium in the stove, a certain preset temperature more than the beginning heat temperature raising to 160 ℃, bleed 1～3 time in stove with high-temperature blower then, make the relative ambient atmosphere of stove internal gas pressure be negative pressure state, remain in 0.8～0.95 scope of ambient atmosphere pressure, the time of bleeding looks the volume of stove and is specifically determined by technological experiment with the different of aluminium specification, the temperature of bleeding for the first time is 160～260 ℃, second and the temperature of bleeding for the third time be 260～360 ℃, bleed at every turn and be the isothermal pumping process, but after the temperature of once bleeding should be higher at least 50 ℃ than the temperature that the last time bleeds, after bleeding, change furnace gas at every turn, promptly stop to bleed, allow in the air admission stove, make stove internal gas pressure and ambient atmosphere balance, and be warming up to the temperature of next time bleeding more than 260 ℃ simultaneously; (2) after the last ventilation, furnace temperature is risen to insulation annealing in 380～480 ℃, carry out the mechanical property adjustment, annealing time is also specifically determined by technological experiment according to material performance requirement; (3) cooling is come out of the stove, and obtains the finished product.
In theory, the relative ambient atmosphere of air pressure when bleeding in the stove is negative more, and then deoiling effect is good more, but technical difficulty is also big more, so be generally the 0.8～0.95 enough of ambient pressure; The number of times of bleeding is many more, and oil gas is removed thorough more, but facts have proved that bleeding for twice generally speaking gets final product, and three times are just enough, many more just losing time and the energy, and increase aluminium grain growth tendency.
Compare with prior art, the present invention has following advantage:
1. owing to constantly extract furnace gas out, make the interior atmosphere relatively of stove be negative pressure state, the dividing potential drop of ROLLING OIL in stove is saturated never, thereby quickened the volatilization of ROLLING OIL, therefore shortened dramatically the whole anneal oil removing time, reduce 30～50% than prior art, improved production efficiency, reduced energy consumption.
2. with the product of art breading of the present invention, its tensile strength is suitable with prior art, but has controlled grain growth owing to reduced annealing time, thereby makes its unit elongation apparently higher than prior art, for about its 1.5 times.
3. deoiling effect is better than prior art.
Accompanying drawing 1 is one of the present invention process flow diagram of bleeding for twice.
The SA section is that annealing furnace begins to heat up among the figure, and the AB section is the negative pressure ventilation operation first time; The BC section is for changing for the first time the furnace gas operation; The CD section is the negative pressure ventilation operation second time; The DE section is for changing for the second time the furnace gas operation; The EF section is that high temperature is adjusted the mechanical property operation; The FG section is for cooling off the operation of coming out of the stove.
Embodiment 1-3
The aluminium foil material package that specification is respectively (the wide * diameter of thick *) 0.015*1050*400mm and 0.015*500*300mm is gone in the annealing furnace, carries out oil removing and annealing by the technical process of accompanying drawing 1 then, and its processing condition are as shown in table 1.The cooling of material volume detects after coming out of the stove, and is about to the material volume and successively peels off, and does the swabbing performance test, until the most difficult middle part of oil removing, and does corresponding measuring mechanical property, and its result is shown in table 2 and table 3.
Table 1
The insulation annealing of bleeding for the second time of bleeding for the first time
Sequence number material volume specification
Temperature-time temperature-time temperature-time
℃ (hour) ℃ (hour) ℃ (hour)
Embodiment 1 A 200 9 260 8 420 5
Embodiment 2 B 160 11 280 9 430 6
Embodiment 3 B 180 10 280 8 440 6
Annotate: 1. the stove internal gas pressure was 0.85 ± 0.02 of an ambient pressure when embodiment 1 bled; Furnace gas when embodiment 2,3 bleeds is pressed and is 0.95 ± 0.02 of ambient pressure.
2. twice time of exchanging gas is 0.5 hour
3.A＝0.015＊1050＊400mm;B＝0.015＊500＊300mm
Table 2. surface quality
The sequence number die surperficial oil mark peculiar smell swabbing performance in the volume of bubbling of subsiding
It is no qualified that embodiment 1 does not have
It is no qualified that embodiment 2 does not have
It is no qualified that embodiment 3 does not have
Table 3. measuring mechanical property result
Sequence number tensile strength N/mm
2Unit elongation % conclusion
GB GB3198-82〉29.4〉1.00 qualified
Former technology (on average) 45.6 1.38 is qualified
Embodiment 1 44.2 2.15 is qualified
Embodiment 2 43.0 2.10 is qualified
Embodiment 3 40.9 2.10 is qualified
Claims (1)
1, a kind of technology of sectional type negative pressure anneal oil removing of aluminium, comprise oil removing and annealing, it is characterized in that adopting the sectional type negative pressure anneal oil removing method, being about to oil removing and mechanical property adjustment carries out in two steps, elder generation's low temperature oil removing, after carry out the high-temperature mechanical property adjustment, concrete operation is: after (1) packs into aluminium in the stove, a certain preset temperature more than the beginning heat temperature raising to 160 ℃, bleed 1～3 time in stove with high-temperature blower then, make the relative ambient atmosphere of stove internal gas pressure be negative pressure state, remain in 0.8～0.95 scope of ambient atmosphere pressure, the time of bleeding looks the volume of stove and is specifically determined by technological experiment with the different of aluminium specification, the temperature of bleeding for the first time is 160～260 ℃, second and the temperature of bleeding for the third time be 260～360 ℃, bleed at every turn and be the isothermal pumping process, but after the temperature of once bleeding should be higher at least 50 ℃ than the temperature that the last time bleeds, after bleeding at every turn, change furnace gas, promptly stop to bleed, allow in the air admission stove, make stove internal gas pressure and ambient atmosphere balance, and be warming up to the temperature of next time bleeding more than 260 ℃ simultaneously; (2) after the last ventilation, furnace temperature is risen to insulation annealing in 380～480 ℃, carry out the mechanical property adjustment, annealing time is also specifically determined by technological experiment according to material performance requirement; (3) cooling is come out of the stove, and obtains the finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95103194A CN1038521C (en) | 1995-03-30 | 1995-03-30 | Technology of sectional type negative pressure anneal oil removing for aluminium material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95103194A CN1038521C (en) | 1995-03-30 | 1995-03-30 | Technology of sectional type negative pressure anneal oil removing for aluminium material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1111681A true CN1111681A (en) | 1995-11-15 |
| CN1038521C CN1038521C (en) | 1998-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95103194A Expired - Fee Related CN1038521C (en) | 1995-03-30 | 1995-03-30 | Technology of sectional type negative pressure anneal oil removing for aluminium material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038521C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085744C (en) * | 1999-04-15 | 2002-05-29 | 大连理工大学 | Aluminium rod self-annealing method utilizing afterheat |
| CN106269964A (en) * | 2016-11-17 | 2017-01-04 | 洛阳万基铝加工有限公司 | A kind of Aluminum sheets processing technique |
| CN106282863A (en) * | 2016-09-08 | 2017-01-04 | 江苏大亚铝业有限公司 | High-peeling strength food packaging aluminium foil high temperature negative pressure anneal technique |
| CN107059033A (en) * | 2017-03-27 | 2017-08-18 | 江苏大亚铝业有限公司 | A kind of oil removing process for improving medicinal aluminum foil moistened surface tension force |
| CN107492450A (en) * | 2017-08-09 | 2017-12-19 | 乳源东阳光优艾希杰精箔有限公司 | A kind of soft state aluminium foil of aluminium electrolutic capacitor low-voltage anode use and its manufacture method |
| CN109266983A (en) * | 2018-11-29 | 2019-01-25 | 天津忠旺铝业有限公司 | A method of prevent aluminum alloy coiled materials Annealing oil stain from generating |
| CN110195197A (en) * | 2019-06-20 | 2019-09-03 | 乳源东阳光优艾希杰精箔有限公司 | A kind of aluminium volume anneal oil removing method |
| CN111926272A (en) * | 2020-08-31 | 2020-11-13 | 包头常铝北方铝业有限责任公司 | Annealing method for cast-rolled aluminum foil |
| CN113215504A (en) * | 2020-01-21 | 2021-08-06 | 江苏大亚铝业有限公司 | Oil removing process for improving wetting tension of surface of medicinal aluminum foil |
| CN114798771A (en) * | 2022-04-12 | 2022-07-29 | 神隆宝鼎新材料有限公司 | Method for improving surface cleaning and wetting performance of battery foil and battery foil produced by method |
-
1995
- 1995-03-30 CN CN95103194A patent/CN1038521C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085744C (en) * | 1999-04-15 | 2002-05-29 | 大连理工大学 | Aluminium rod self-annealing method utilizing afterheat |
| CN106282863A (en) * | 2016-09-08 | 2017-01-04 | 江苏大亚铝业有限公司 | High-peeling strength food packaging aluminium foil high temperature negative pressure anneal technique |
| CN106282863B (en) * | 2016-09-08 | 2018-04-24 | 江苏大亚铝业有限公司 | The food packaging aluminium foil high temperature negative pressure anneal technique of high-peeling strength |
| CN106269964B (en) * | 2016-11-17 | 2018-01-30 | 洛阳万基铝加工有限公司 | A kind of Aluminum sheets processing technology |
| CN106269964A (en) * | 2016-11-17 | 2017-01-04 | 洛阳万基铝加工有限公司 | A kind of Aluminum sheets processing technique |
| CN107059033A (en) * | 2017-03-27 | 2017-08-18 | 江苏大亚铝业有限公司 | A kind of oil removing process for improving medicinal aluminum foil moistened surface tension force |
| CN107492450A (en) * | 2017-08-09 | 2017-12-19 | 乳源东阳光优艾希杰精箔有限公司 | A kind of soft state aluminium foil of aluminium electrolutic capacitor low-voltage anode use and its manufacture method |
| CN109266983A (en) * | 2018-11-29 | 2019-01-25 | 天津忠旺铝业有限公司 | A method of prevent aluminum alloy coiled materials Annealing oil stain from generating |
| CN110195197A (en) * | 2019-06-20 | 2019-09-03 | 乳源东阳光优艾希杰精箔有限公司 | A kind of aluminium volume anneal oil removing method |
| CN110195197B (en) * | 2019-06-20 | 2020-10-09 | 乳源东阳光优艾希杰精箔有限公司 | Annealing and oil removing method for aluminum coil |
| CN113215504A (en) * | 2020-01-21 | 2021-08-06 | 江苏大亚铝业有限公司 | Oil removing process for improving wetting tension of surface of medicinal aluminum foil |
| CN111926272A (en) * | 2020-08-31 | 2020-11-13 | 包头常铝北方铝业有限责任公司 | Annealing method for cast-rolled aluminum foil |
| CN114798771A (en) * | 2022-04-12 | 2022-07-29 | 神隆宝鼎新材料有限公司 | Method for improving surface cleaning and wetting performance of battery foil and battery foil produced by method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1038521C (en) | 1998-05-27 |
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