Appearance difference：
The surface difference between cold-rolled and hot-rolled aluminum sheets can be seen from the appearance alone.
The reason for this is that hot-rolled aluminum sheets are often made of alloys, especially metals such as manganese, magnesium, and silicon, which will cause the surface of the aluminum sheet to turn gray and black,therefore, the surface of the hot-rolled sheet will be grayer than the cold-rolled sheet.
Usually, the surface brightness of the hot-rolled sheet is better than that of the cold-rolled sheet, but this should also be compared with the thickness of the aluminum sheet.
Performance difference
The difference between cold-rolled and hot-rolled aluminum sheets is obvious. The mechanical properties of hot-rolled sheets and the ductility of aluminum sheets are better.
Especially the oxidation process of hot-rolled aluminum plate, the effect is extremely good, compared with cold aluminum plate and aluminum coil, the oxidation effect of hot-rolled aluminum plate is better.
The process of hot-rolled plate is to use vertical casting to form billets, which is what we call large slabs, which are heated and finally rolled into coils.
Process difference
The process of cold-rolled sheet and cold-rolled steel is different, because the hardness of aluminum sheet is relatively soft, so his processing technology is relatively simple.
The process of hot-rolled aluminum plate is generally aluminum ingots - smelting - rolling into sheets and strips through a casting and rolling mill. The core of this process is a hot rolling mill, and the cost is relatively high.
However, compared with the cold-rolled sheet and the hot-rolled aluminum sheet, the hot-rolled sheet is less prone to defects such as segregation, inclusions, and oil spots, and the quality is definitely not as good as the hot-rolled sheet.
Intensity difference
The comparison of the performance and strength of cold-rolled and hot-rolled aluminum sheets mainly depends on the alloy composition of the aluminum sheets.
Different aluminum plate alloys have incomparable hardness, such as the hot-selling 1060 aluminum plate of cold-rolled aluminum plate and the best-selling 5052 aluminum plate of hot-rolled plate.
One of the two is that the aluminum content is high, and the other is that the cost of other metals is higher.
The performance comparison between the two is different. The hardness of the 5052 aluminum plate is better, and the use effect scene is also better.
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