橫軋是容器板軋機生產技術的特點之一。橫軋的目的,一是展寬,當原料寬度不足于板寬時,采用展寬方式以達到板寬的要求;二是減少鋼板縱橫向性能差。這種特殊的軋制方式,促使軋機遲遲未能走向自動化,直至今日容器板軋機自動化過程中橫軋仍然是一個關鍵的環節。
Rolling is one of the characteristics of container plate mill production technology. Cross rolling, the purpose of it is broadening, when raw material width is insufficient in the plate width, adopts the way of broadening plate in order to achieve wide requirements; The second is to reduce steel plate freely to the poor performance. This special way of rolling, rolling mill's delayed toward automation, until today container rolling mill automation process is still a key link.
容器板軋制通常在一個機架或兩個機架上實行多道次往復軋制,原料除板坯以外,有時尚用大小鋼錠、鍛制坯與二次坯,規格非常繁雜,成品板規格和鋼號也很多,即使原料尺寸與成品尺寸相近,但由于鋼種的不同,軋制規程仍有很大的差異,給軋機自動化帶來一定難度。
Container plate rolling are usually in a frame or two rack has multichannel reciprocating rolling, raw materials, except the slab has a fashion with the size of the steel ingot, the forging blocking and secondary billet, specification is very complex, product specifications and steel grade is very much also, even if the raw material size close to finished size, but because of the different steel grade, rolling schedule still has great difference, bring certain difficulty mill automation.
板型控制除橫向與縱向以外,尚有平面板型的控制,再加上立輥軋邊,更增加軋機自動化的難度。
Plate shape control in addition to the horizontal and vertical, there are flat plate type control, coupled with the vertical roll rolling edge, increased the difficulty of the mill automation.
控軋控冷是容器板軋機的一項特長,因容器板軋機具有隨意變換道次和軋制溫度的靈活性,并采取一些待溫等軋的有效措施,有目的地控制道次壓下率與等軋終軋溫度,使軋機自動化添加了許多不穩定的因素。
Controlled rolling cold container plate mill is a special skill, because of the container plate mill with different time and the flexibility of the rolling temperature, and take some stay warm rolling of effective measures, such as purposefully control rate under time pressure and rolling finishing temperature, make the mill automation adds many unstable factors.
雖然采用控軋控冷技術,使線外熱處理量明顯減少,但容器板線外熱處理仍然是一項必不可少的繁重工序。熱處理種類有正火、回火、淬火、退火、調質及緩冷等方式,而爐型有連續式和間歇式之分,非常繁多。這些工序周期長,連續性差,要實現自動化自然會受到一定的影響。
While using controlled rolling technology of controlled cooling, make the line external heat capacity decreased significantly, but outside the container plate line heat treatment is still a necessary process. Heat treatment types with normalizing, tempering, quenching, annealing, tempering and slow cooling way, while type furnace is continuous or intermittent, very wide. The process cycle is long, poor continuity, in order to realize automation of natural will be affected by certain influence.
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