铝卷是指铸轧机经注塑、拉型角加工后，进行飞剪的金属品，广泛运用在电子器件、包裝、工程建筑、机械设备等行业。下面为大家简单介绍一下该产品的生产工艺流程。下面来讲讲铝制品铝卷弯折原因以及正确生产工艺的相关内容。
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.
铝制品铝卷弯折原因
Reasons for bending of aluminum coil of aluminum products
铝卷是铝制品的一种，应用范围非常广泛，且因其良好的性能与使用效果而深受用户的喜爱。该产品在交货时可以是平的也可以是卷状的。近些年，随着铝制卷材的广泛应用，它已经逐渐替代铜片被用于绝缘领域，因为相比于铜片，该产品的防锈效果更好。不过该产品在使用时也是会遇到问题的，比如说弯折问题。
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.
铝卷生产厂家认为导致变形的主要原因是在蒸发冷却的条件下，卷材不同位置的导热系数虽然一致，但因为厚度和壁形的差异，不同位置的散热速度不平衡，薄壁的冷却速度低于厚壁，进而导致卷材弯折。
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、厚壁部的截面积较小，造成收拢力小；
1. The cross-sectional area of the thick wall is small, resulting in small folding force;
2、薄壁部分横截面积比较大，伴随着气温的降低慢慢形成很大的回缩力，厚壁部分环境温度大幅降低，形成的收拢力较小甚至不会形成收拢力；
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、铝卷厚壁部分温度持续降低速度快，先形成收拢力，薄壁部分或中空管部分操作温度降低慢，几乎没有收拢力；
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、卷材横截面上的回缩力不匀称，沿压挤放向薄壁弯折；
4. The retraction force on the cross section of the coiled material is uneven and bends to the thin wall along the extrusion;
5、卷材离开放线机后，环境温度再次持续降低，导致弯折问题的出现。
5. After the coil leaves the paying off machine, the ambient temperature continues to decrease again, resulting in bending problems.

铝卷的生产工艺流程分析
Analysis on production process of aluminum coil
1、冶炼厂加工
1. Smelter processing
铝锭按成分的不同分为重熔用废铝、高纯度废铝和铝合金型材锭三种；按样式和规格又可分成条锭、圆锭、板锭、T形锭等几类。铝是一种银色金属材料，在地表中成分仅次氧和硅排在第三位。铝密度只2.7104g/cm，约为钢、铜或黄铜密度的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、铸轧/热轧
2. Cast rolling / hot rolling
持续铸轧工艺是指形状记忆合金在辊式连铸结晶器中凝结并进行塑性变形加工（轧制）；而轧钢轧机工艺则是铝卷材料在连铸结晶器中凝结后，在挤压机上进行轧制。
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、冷轧加工
3. Cold rolling
冷轧与热轧的区别是：冷轧是在加工硬化温度下的轧制，而热轧则是在加工硬化温度之上的轧制。冷轧主要用于不能热处理的板才，一般对表层规定较高，并且单零箔、双零箔等纤薄的原材料也只用冷轧轧制；热轧是为冷轧出示胚料，而且许多材料都需要有较高的耐蚀性、延展性等特性，这些都需要通过热轧获得。
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、整平包装
4. Flat packaging
整平包装本质上是选择低压下率（0.3%-3%）的冷轧。整平可改进板形，提升卷材的竖直度，通过调节整平的压下率，还能让热轧带钢的物理性能在允许的范围内有转变。
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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