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Mingtai Aluminum Aluminum Sheet Cold Rolling Process Introdu

Edit:Mingtai Date: 2019-06-12 15:25
Cold-rolled aluminum sheet: hot-rolled steel coil is used as raw material, and the scale is removed by pickling to be cold-rolled, and the finished product is rolled hard roll. The cold work hardening caused by continuous cold deformation increases the strength and hardness of the rolled hard roll. The toughness index is reduced, so the stamping performance will deteriorate and can only be used for parts that are simply deformed. Rolled hard rolls can be used as raw materials for hot-dip galvanizing plants because the hot-dip galvanizing units are equipped with an annealing line. The rolling hard roll weight is generally 20-40 tons, and the steel coil is continuously rolled at a normal temperature for hot rolling pickling rolls. The inner diameter is 610mm.
Product features: Because it has not been annealed, its hardness is very high (HRB is greater than 90), and the machining performance is extremely poor. Only a simple directional bending process of less than 90 degrees (perpendicular to the winding direction) can be performed.
Simply put, cold rolling is processed and rolled on the basis of hot-rolled aluminum sheets, and is generally a hot rolling--- pickling---cold rolling process.
The cold-rolled aluminum sheet is processed from a hot-rolled aluminum sheet at a normal temperature, although the steel sheet is heated during the processing because of rolling, although it is called cold rolling. Due to the cold rolling of hot rolling through continuous cold deformation, the mechanical properties are relatively poor and the hardness is too high. It must be annealed to restore its mechanical properties, and the unannealed is called a hard roll. Rolled hard rolls are generally used for products that do not require bending or stretching. The thickness of 1.0 or less is hard and good for both sides or four sides. Cold rolled aluminum sheets are generally annealed.
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