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冷軋是在室溫條件下在再結(jié)晶溫度以下將鋼板進一步軋薄至為目標厚度的鋼板。和熱軋鋼板比較，冷軋鋼板厚度更加精確，而且表面光滑、漂亮。

冷軋板一般在開軋前是沒有加熱工序的。但是，由于帶鋼厚度小，很容易出現(xiàn)板形問題。而且，冷軋后為成品，因此，為了控制帶鋼的尺寸精度和

表面質(zhì)量，采用了很多很繁瑣的工藝。冷軋的生產(chǎn)線長，設備多，工藝復雜。隨著用戶對帶鋼尺寸精度、板形和表面質(zhì)量要求的提高，冷軋機組的

控制模型、l1和l2系統(tǒng)、板形控制手段相對熱軋要多。而且軋輥和帶鋼的溫度也是其中一項比較重要的控制指標從定義上來說，鋼錠或鋼坯在常溫下

很難變形，不易加工，大部分鋼材都用熱軋方法軋制。但是因為在高溫下鋼的表面容易生成氧化鐵皮，使熱軋鋼材表面粗糙，尺寸波動較大，

所以要求表面光潔、尺寸精確、力學性能好的鋼材，以熱軋半成品或成品為原料再用冷軋方法生產(chǎn)。

Cold rolling is a sheet further rolled to a target thickness below the recrystallization temperature at room temperature.Compared with the hot-rolled steel plate,

the cold-rolled steel plate thickness is more accurate, and the surface is smooth and beautiful.Cold-rolled plates generally have no heating process before the rolling.However, due to the small thickness of the strip steel, it is easy to appear plate shape problems.Moreover, after cold rolling is the finished products,

therefore, in order to control the size accuracy and surface quality of the strip steel, a lot of very tedious processes are adopted.Cold-rolled production line is

long,with many equipment and complex process.With the improvement of user requirements for strip size accuracy, plate shape and surface quality, the control models,l1 and l2 systems and plate shape control means are more common than hot rolling.And the temperature of roll and strip steel is also one of the more important control indicators. By definition, steel ingot or billet is difficult to deform at room temperature and not easy to process, and most steel is rolled by

hot rolling method.However, because the surface of steel at high temperature is easy to generate iron oxide skin under high temperature, which makes the surface

of hot-rolled steel rough and the size fluctuates greatly, the steel with clean surface, accurate size and good mechanical properties should be produced from

hot-rolled semi-finished products or finished products as raw materials by cold rolling method.