CN101844152B - Production process of ultrathin double-face optical aluminum foil - Google Patents
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Abstract
The invention discloses a production process of ultrathin double-face optical aluminum foil, comprising the following steps of: smelting: fusing raw materials into aluminum liquid by using a heat-storage type smelting furnace and entering into a casting-rolling machine after filtration; casting and rolling: introducing fused aluminum liquid in the casting-rolling machine to be aluminium foil blanks; cold rolling: rolling aluminium foil blanks to 0.78 millimeter by using a cold rolling machine after cooling the aluminium foil blanks to room temperature, then sending the aluminium foil blanks into an annealing furnace for uniformly annealing, and then rolling the aluminium foil blanks to 0.36 millimeter to obtain aluminium foil stocks; rough rolling: roughly rolling the aluminium foil stocks, wherein the reduced passes of rough rolling are 0.36 millimeter to 0.19 millimeter to 0.09 millimeter to 0.043 millimeter; medium rolling: carrying out medium rolling on the roughly rolled aluminium foil stocks, wherein the educed passes of medium rolling are 0.043 millimeter to 0.021 millimeter; and finish rolling: carrying out finishing rolling on the medium-rolled aluminium foil stocks, wherein the reduced passes of finish rolling are 0.021 millimeter to 0.011 millimeter, thereby obtaining aluminum foil finished products. The invention can reduce tape breakage rate in the production process of the aluminum foil by adopting the production process of the ultrathin double-face optical aluminum foil, thereby stably producing the ultrathin double-face optical aluminum foil in batch.
Description
Technical field
The present invention relates to a kind of double-face optical aluminum foil production technology, especially relate to a kind of production process of ultrathin double-face optical aluminum foil.
Background technology
China has become world aluminium foil output big country at present, and the technology that aluminium foil is produced is also ripe day by day, and the aluminium foil product also has been widely used in industries such as packaging for foodstuff, medicine packing, air-conditioner, electronics, and development prospect is very wide.The aluminium foil product that China produced by the surface state branch, divides two kinds on double-face optical aluminum foil and machine glazing aluminium foil; Double-face optical aluminum foil, its final pass are to adopt uni-tension rolling, promptly enter the mouth, export and be individual aluminium foil; The product that adopts this explained hereafter to go out; Its upper and lower surface all directly contacts with roll, and two sides gloss is all consistent with roll, comparatively light; Machine glazing aluminium foil, its final pass are to adopt pairing rolling, and promptly the mode of two aluminium foil ply rolling is accomplished Rolling Production; The product that adopts this explained hereafter to go out, the one side that it contacts with roll, its gloss is the same with roll; Comparatively light is called bright, and the one side that does not contact with roll; And gloss is darker, surely is dark face.Because the thickness of aluminium foil below 0.012 millimeter the time, adopts the process of uni-tension rolling to produce very difficulty, generally adopts the rolling method of pairing to produce; The product of promptly producing is the machine glazing aluminium foil; But in electron trade and external fields such as food containers, more and more users require to be used 0.011 millimeter double-face optical aluminum foil product, and since 0.011 millimeter this thickness in the aluminium foil production process; Near the limiting condition of product uni-tension rolling; Producting process difficulty is bigger, and belt phenomenon frequently appears in existing manufacturing technique, be difficult to stable, in batches produce high-quality product.
The utility model summary of the invention
The purpose of this invention is to provide a kind of production process of ultrathin double-face optical aluminum foil, can reduce the broken belt rate in the aluminium foil production process, stable, production ultrathin double-face optical aluminum foil in batches.
For realizing above-mentioned purpose, the invention provides a kind of production process of ultrathin double-face optical aluminum foil, comprising:
Melting changes into aluminium liquid with raw material with the heat accumulating type smelting furnace, filters the back and gets into casting and rolling machine through chute;
Casting is introduced the casting and rolling machine casting with the aluminium liquid after the melting and is become the aluminium foil blank;
Cold rolling, be rolled to 0.78mm through cold rolling unit after said aluminium foil blank is cooled to room temperature, send into then in the annealing furnace, carry out homogenizing annealing, continue to be rolled to 0.36mm then and obtain aluminium foil stock;
Roughing is carried out roughing with said aluminium foil stock, and the passage of depressing of roughing is 0.36 millimeter → 0.19 millimeter → 0.09 millimeter → 0.043 millimeter;
In roll, roll during the said aluminium foil stock after the roughing is carried out, in the passage of depressing of rolling be 0.043 millimeter → 0.021 millimeter;
Finish rolling, with in said aluminium foil stock after rolling carry out finish rolling, the passage of depressing of finish rolling is 0.021 millimeter → 0.011 millimeter, obtains aluminum foil finished product.
Therefore, the present invention can reduce the broken belt rate in the aluminium foil production process through adopting above-mentioned production process of ultrathin double-face optical aluminum foil, stable, production ultrathin double-face optical aluminum foil in batches.
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
Description of drawings
Fig. 1 is the flow chart of ultrathin double-face optical aluminum foil embodiment of the present invention.
The specific embodiment
Embodiment
Fig. 1 is for the flow chart of ultrathin double-face optical aluminum foil embodiment of the present invention, and is as shown in Figure 1, comprising:
Step 101, melting changes into aluminium liquid with raw material with the heat accumulating type smelting furnace, filters the back and gets into casting and rolling machine through chute; Wherein, material composition described in the fusion process is 1235 alloys, adopts per inch 50 purpose filters.
Step 102, casting is introduced the casting and rolling machine casting with the aluminium liquid after the melting and is become the aluminium foil blank; Wherein, said aluminium foil blank is the casting plate, uses aluminium-titanium-B grain graining agent in the strip casting process; Hydrogen content is not more than 0.10 milliliter/100 grams in the said aluminium foil blank, and the grain size of said aluminium foil blank is not more than secondary, and the same plate difference of blank is not more than 0.05 millimeter; After said aluminium foil blank is cooled to room temperature, can be rolled strict control blank surface quality; Surface quality defects such as no bright line, scuffing, secret note, oil mark are guaranteed the product strip shape quality.
Step 103, cold rolling, be rolled to 0.78mm through cold rolling unit after said aluminium foil blank is cooled to room temperature, send into then in the annealing furnace, carry out homogenizing annealing, continue to be rolled to 0.36mm then and obtain aluminium foil stock.
Step 104, roughing is carried out roughing with said aluminium foil stock, and the passage of depressing of roughing is 0.36 millimeter → 0.19 millimeter → 0.09 millimeter → 0.043 millimeter; Wherein, depressing passage is 0.36 millimeter → 0.19 millimeter → 0.09 millimeter → 0.043 millimeter, and soon 0.36 millimeter aluminium foil stock is earlier rolling is 0.19 millimeter; Reroll and be made as 0.09 millimeter; Rerolling is made as 0.043 millimeter, and the acid number of ROLLING OIL is a 0.6-0.8 milligram potassium hydroxide/gram (mgKOH/g) in said 0.36 millimeter → 0.19 millimeter rolling pass, and ester value is a 2.5-4.0 milligram potassium hydroxide/gram; The convexity of roll is 50 ‰, and roughness is the 0.25-0.3 micron; The acid number of ROLLING OIL is a 0.6-0.8mg milligram potassium hydroxide/gram in said 0.19 millimeter → 0.09 millimeter rolling pass, and ester value is a 2.5-4.0 milligram potassium hydroxide/gram, and the convexity of roll is 50 ‰, and roughness is the 0.25-0.3 micron; The acid number of ROLLING OIL is a 0.6-0.8 milligram potassium hydroxide/gram in said 0.09 millimeter → 0.043 millimeter rolling pass, and ester value is a 2.5-4.0 milligram potassium hydroxide/gram, and the convexity of roll is 50 ‰, and roughness is the 0.25-0.3 micron.
Step 105, in roll, roll during the said aluminium foil stock after the roughing is carried out, in the passage of depressing of rolling be 0.043 millimeter → 0.021 millimeter; In roll in the process roll and adopt No. 220 rollers; Roughness is the 0.095-0.105 micron; The acid number of ROLLING OIL is a 0.5-0.6 milligram potassium hydroxide/gram in said 0.043 millimeter → 0.021 millimeter rolling pass; Ester value is a 6.5-8.0 milligram potassium hydroxide/gram, and the convexity of roll is 50 ‰ in said 0.043 millimeter → 0.021 millimeter rolling pass, and roughness is the 0.095-0.105 micron.
Step 106, finish rolling, with in said aluminium foil stock after rolling carry out finish rolling, the passage of depressing of finish rolling is 0.021 millimeter → 0.011 millimeter, obtains aluminum foil finished product; Roll adopts No. 220 rollers, and roughness is the 0.08-0.09 micron, and the adding proportion of ROLLING OIL is 6-8% in the finish rolling process; The acid number of ROLLING OIL is a 0.6-0.7 milligram potassium hydroxide/gram in said 0.021 millimeter → 0.011 millimeter rolling pass, and ester value is a 7.0-8.0 milligram potassium hydroxide/gram, at finishing pass; The ROLLING OIL acid number is brought up to 0.6-0.7 milligram potassium hydroxide/gram by 0.4-0.6 milligram potassium hydroxide/gram, and ester value is brought up to 7.0-8.0 milligram potassium hydroxide/gram by 6.0-8.0 milligram potassium hydroxide/gram, mainly is to become goods because the 0.011mm double-face optical aluminum foil is hard state; Can not consider of the influence of ROLLING OIL physical and chemical index to anneal oil removing; Secondly control accuracy is added sternly, can reduce the various quality fluctuations that occur in process of production like this, suitably improve the physical and chemical index of ROLLING OIL once more; Can improve the film strength of ROLLING OIL; Improve the bearing capacity of ROLLING OIL, make that ROLLING OIL can be with the large deformation rate in the operation of rolling, the production of big roll-force.The convexity of roll is 40 ‰ in said 0.021 millimeter → 0.011 millimeter rolling pass; Roughness is the 0.08-0.09 micron, has reduced the roughness of roller surface in the finishing pass, has improved rolling accuracy; Roll surface roughness changes the coefficient of friction variation that causes the operation of rolling in the operation of rolling; According to rolling principle, the coefficient of friction of the operation of rolling reduces makes the minimum rolled thickness of rolled products reduce, and helps the attenuate production of product; Simultaneously also improve control accuracy, helped controlling surface quality of products and strip shape quality.Convexity with roll in this rolling pass is reduced to 40 ‰ by 50 ‰, has avoided causing because of convexity is excessive loose excessively, limit portion tension in the middle of the aluminum foil finished product, and then causes the phenomenon of broken belt.
Process conditions to ROLLING OIL in the present embodiment are adjusted, and the one, having dwindled the ROLLING OIL physical and chemical index is the control range of acid number and ester value, makes control more accurate; The 2nd, suitably improved the ROLLING OIL additive formula of finishing pass, the film strength of ROLLING OIL is improved, the bearing capacity of ROLLING OIL further strengthens; Make in the production process of 0.011mm double-face optical aluminum foil; Be not easy to occur the situation of rupture of oil film, thereby guarantee the stable of the operation of rolling, and surface quality of products.In addition; Present embodiment also is adjusted into 0.043 millimeter → 0.021 millimeter with middle mill train; Finishing pass is adjusted into 0.021 millimeter → 0.011 millimeter, has suitably improved the inferior reduction ratio of middle mill train, reduced the reduction ratio of finishing pass; The speed that makes finishing pass depress process decreases, and the product thickness attenuate is easier.
Therefore, the present invention can reduce the broken belt rate in the aluminium foil production process through adopting above-mentioned production process of ultrathin double-face optical aluminum foil, stable, production ultrathin double-face optical aluminum foil in batches.
What should explain at last is: above embodiment is only in order to technical scheme of the present invention to be described but not limit it; Although the present invention has been carried out detailed explanation with reference to preferred embodiment; Those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, also can not make amended technical scheme break away from the spirit and the scope of technical scheme of the present invention and these are revised or be equal to replacement.
Claims (6)
1. a production process of ultrathin double-face optical aluminum foil is characterized in that, comprising:
Melting changes into aluminium liquid with raw material with the heat accumulating type smelting furnace, filters the back and gets into casting and rolling machine through chute;
Casting is introduced the casting and rolling machine casting with the aluminium liquid after the melting and is become the aluminium foil blank;
Cold rolling, be rolled to 0.78mm through cold rolling unit after said aluminium foil blank is cooled to room temperature, send into then in the annealing furnace, carry out homogenizing annealing, continue to be rolled to 0.36mm then and obtain aluminium foil stock;
Roughing is carried out roughing with said aluminium foil stock, and the passage of depressing of roughing is 0.36 millimeter → 0.19 millimeter → 0.09 millimeter → 0.043 millimeter;
In roll, roll during the said aluminium foil stock after the roughing is carried out, in the passage of depressing of rolling be 0.043 millimeter → 0.021 millimeter, roll that roll adopts No. 220 rollers in the process in said, roughness is the 0.095-0.105 micron;
Finish rolling, with in said aluminium foil stock after rolling carry out finish rolling, the passage of depressing of finish rolling is 0.021 millimeter → 0.011 millimeter, obtains aluminum foil finished product, roll adopts No. 220 rollers in the said finish rolling process, roughness is the 0.08-0.09 micron.
2. production process of ultrathin double-face optical aluminum foil according to claim 1 is characterized in that: material composition described in the said fusion process is 1235 alloys.
3. production process of ultrathin double-face optical aluminum foil according to claim 2; It is characterized in that: adopt per inch 50 purpose filters in the said fusion process; Use aluminium-titanium-B grain graining agent in the said strip casting process; Hydrogen content is not more than 0.10 milliliter/100 grams in the said aluminium foil blank, and the grain size of said aluminium foil blank is not more than secondary, and the same plate difference of blank is not more than 0.05 millimeter.
4. production process of ultrathin double-face optical aluminum foil according to claim 5 is characterized in that: the adding proportion of ROLLING OIL is 6-8% in the said finish rolling process.
5. production process of ultrathin double-face optical aluminum foil according to claim 6 is characterized in that: the acid number of ROLLING OIL is a 0.6-0.8 milligram potassium hydroxide/gram in said 0.36 millimeter → 0.19 millimeter rolling pass, and ester value is a 2.5-4.0 milligram potassium hydroxide/gram; The acid number of ROLLING OIL is a 0.6-0.8 milligram potassium hydroxide/gram in said 0.19 millimeter → 0.09 millimeter rolling pass, and ester value is a 2.5-4.0 milligram potassium hydroxide/gram; The acid number of ROLLING OIL is a 0.6-0.8 milligram potassium hydroxide/gram in said 0.09 millimeter → 0.043 millimeter rolling pass, and ester value is a 2.5-4.0 milligram potassium hydroxide/gram; The acid number of ROLLING OIL is a 0.5-0.6 milligram potassium hydroxide/gram in said 0.043 millimeter → 0.021 millimeter rolling pass, and ester value is a 6.5-8.0 milligram potassium hydroxide/gram; The acid number of ROLLING OIL is a 0.6-0.7 milligram potassium hydroxide/gram in said 0.021 millimeter → 0.011 millimeter rolling pass, and ester value is a 7.0-8.0 milligram potassium hydroxide/gram.
6. production process of ultrathin double-face optical aluminum foil according to claim 7 is characterized in that: the convexity of roll is 50 ‰ in said 0.36 millimeter → 0.19 millimeter rolling pass, and roughness is the 0.25-0.3 micron; The convexity of roll is 50 ‰ in said 0.19 millimeter → 0.09 millimeter rolling pass, and roughness is the 0.25-0.3 micron; The convexity of roll is 50 ‰ in said 0.09 millimeter → 0.043 millimeter rolling pass, and roughness is the 0.25-0.3 micron; The convexity of roll is 50 ‰ in said 0.043 millimeter → 0.021 millimeter rolling pass; The convexity of roll is 40 ‰ in said 0.021 millimeter → 0.011 millimeter rolling pass.
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| CN2010101338182A CN101844152B (en) | 2010-03-29 | 2010-03-29 | Production process of ultrathin double-face optical aluminum foil |
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| CN102553921A (en) * | 2012-01-18 | 2012-07-11 | 山东鲁丰铝箔股份有限公司 | Method for preparing household container foil |
| CN102989772A (en) * | 2012-06-15 | 2013-03-27 | 云南浩鑫铝箔有限公司 | Aluminium foil and preparation method thereof |
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| JPS6132530U (en) * | 1984-07-30 | 1986-02-27 | 日野自動車株式会社 | supercharged engine |
| TW297788B (en) * | 1994-12-15 | 1997-02-11 | Sumitomo Metal Ind | |
| US5681405A (en) * | 1995-03-09 | 1997-10-28 | Golden Aluminum Company | Method for making an improved aluminum alloy sheet product |
| CN100513061C (en) * | 2006-03-27 | 2009-07-15 | 李华伦 | Technique for producing magnesium alloy punched thin plate |
| CN101524709B (en) * | 2009-03-27 | 2011-04-27 | 山西银光华盛镁业股份有限公司 | Method for rolling magnesium alloy sheet used as anode of sea-water activated battery |
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Effective date of registration: 20210526 Address after: 072750 east side of Industrial Road, economic development zone, songlindian Town, Zhuozhou City, Baoding City, Hebei Province Patentee after: North China Aluminum New Material Technology Co.,Ltd. Address before: 072750 technology and Quality Department of Zhuozhou North China Aluminum Co., Ltd Patentee before: NORTH CHINA ALUMINIUM Co.,Ltd. |