鋁卷是指鑄軋機經注塑、拉型角加工后，進行飛剪的金屬品，廣泛運用在電子器件、包裝、工程建筑、機械設備等行業。下面為大家簡單介紹一下該產品的生產工藝流程。下面來講講鋁制品鋁卷彎折原因以及正確生產工藝的相關內容。
Aluminum coil refers to the metal products that are sheared by the casting and rolling machine after injection molding and drawing angle processing. It is widely used in electronic devices, packaging, engineering construction, mechanical equipment and other industries. The following is a brief introduction to the production process of the product. Now let's talk about the causes of aluminum coil bending of aluminum products and the relevant contents of correct production process.
鋁制品鋁卷彎折原因
Reasons for bending of aluminum coil of aluminum products
鋁卷是鋁制品的一種，應用范圍非常廣泛，且因其良好的性能與使用效果而深受用戶的喜愛。該產品在交貨時可以是平的也可以是卷狀的。近些年，隨著鋁制卷材的廣泛應用，它已經逐漸替代銅片被用于絕緣領域，因為相比于銅片，該產品的防銹效果更好。不過該產品在使用時也是會遇到問題的，比如說彎折問題。
Aluminum coil is a kind of aluminum products, which has a wide range of applications, and is deeply loved by users because of its good performance and use effect. The product can be delivered flat or rolled. In recent years, with the wide application of aluminum coil, it has gradually replaced copper strip for insulation, because compared with copper strip, this product has better rust prevention effect. However, the product will also encounter problems in use, such as bending.
鋁卷生產廠家認為導致變形的主要原因是在蒸發冷卻的條件下，卷材不同位置的導熱系數雖然一致，但因為厚度和壁形的差異，不同位置的散熱速度不平衡，薄壁的冷卻速度低于厚壁，進而導致卷材彎折。
The aluminum coil manufacturer believes that the main reason for the deformation is that under the condition of evaporative cooling, although the thermal conductivity at different positions of the coil is the same, due to the difference in thickness and wall shape, the heat dissipation speed at different positions is unbalanced, and the cooling speed of the thin wall is lower than that of the thick wall, which leads to the bending of the coil.
1、厚壁部的截面積較小，造成收攏力小；
1. The cross-sectional area of the thick wall is small, resulting in small folding force;
2、薄壁部分橫截面積比較大，伴隨著氣溫的降低慢慢形成很大的回縮力，厚壁部分環境溫度大幅降低，形成的收攏力較小甚至不會形成收攏力；
2. The cross-sectional area of the thin-walled part is relatively large, and with the decrease of the temperature, a large retraction force is slowly formed. The ambient temperature of the thick-walled part is greatly reduced, resulting in a small or even no retraction force;
3、鋁卷厚壁部分溫度持續降低速度快，先形成收攏力，薄壁部分或中空管部分操作溫度降低慢，幾乎沒有收攏力；
3. The temperature of the thick wall part of the aluminum coil decreases rapidly, and the folding force is formed first. The operating temperature of the thin wall part or the hollow tube part decreases slowly, and there is almost no folding force;
4、卷材橫截面上的回縮力不勻稱，沿壓擠放向薄壁彎折；
4. The retraction force on the cross section of the coiled material is uneven and bends to the thin wall along the extrusion;
5、卷材離開放線機后，環境溫度再次持續降低，導致彎折問題的出現。
5. After the coil leaves the paying off machine, the ambient temperature continues to decrease again, resulting in bending problems.

鋁卷的生產工藝流程分析
Analysis on production process of aluminum coil
1、冶煉廠加工
1. Smelter processing
鋁錠按成分的不同分為重熔用廢鋁、高純度廢鋁和鋁合金型材錠三種；按樣式和規格又可分成條錠、圓錠、板錠、T形錠等幾類。鋁是一種銀色金屬材料，在地表中成分僅次氧和硅排在第三位。鋁密度只2.7104g/cm，約為鋼、銅或黃銅密度的1/3左右。
Aluminum ingots can be divided into three types: remelting scrap aluminum, high-purity scrap aluminum and aluminum alloy profile ingots according to their composition; According to the style and specification, it can be divided into bar ingot, round ingot, plate ingot, T-shaped ingot, etc. Aluminum is a kind of silver metallic material, and only secondary oxygen and silicon rank third in the composition of the earth's surface. The density of aluminum is only 2.7104g/cm, about 1/3 of that of steel, copper or brass.
2、鑄軋/熱軋
2. Cast rolling / hot rolling
持續鑄軋工藝是指形狀記憶合金在輥式連鑄結晶器中凝結并進行塑性變形加工（軋制）；而軋鋼軋機工藝則是鋁卷材料在連鑄結晶器中凝結后，在擠壓機上進行軋制。
Continuous casting and rolling process means that shape memory alloy is condensed in roll continuous casting mold and processed by plastic deformation (rolling); The rolling mill process is that the aluminum coil material is condensed in the continuous casting mold and then rolled on the extruder.
3、冷軋加工
3. Cold rolling
冷軋與熱軋的區別是：冷軋是在加工硬化溫度下的軋制，而熱軋則是在加工硬化溫度之上的軋制。冷軋主要用于不能熱處理的板才，一般對表層規定較高，并且單零箔、雙零箔等纖薄的原材料也只用冷軋軋制；熱軋是為冷軋出示胚料，而且許多材料都需要有較高的耐蝕性、延展性等特性，這些都需要通過熱軋獲得。
The difference between cold rolling and hot rolling is that cold rolling is rolling at the work hardening temperature, while hot rolling is rolling above the work hardening temperature. Cold rolling is mainly used for plates that cannot be heat treated. Generally, the requirements for the surface layer are high, and thin raw materials such as single zero foil and double zero foil are only cold rolled; Hot rolling is to produce blank for cold rolling, and many materials need to have high corrosion resistance, ductility and other properties, which need to be obtained by hot rolling.
4、整平包裝
4. Flat packaging
整平包裝本質上是選擇低壓下率（0.3%-3%）的冷軋。整平可改進板形，提升卷材的豎直度，通過調節整平的壓下率，還能讓熱軋帶鋼的物理性能在允許的范圍內有轉變。
Leveling packaging is essentially a cold rolling process with low pressure reduction (0.3%-3%). Leveling can improve the shape of the strip and the verticality of the coil. By adjusting the flattening reduction rate, the physical properties of the hot rolled strip can be changed within the allowable range.
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