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铝带轧制与钢带相比,由于两种材料的弹性模量相差很大,又因冷却剂不同(钢主要用乳液,铝用矿物油),所以铝轧带材的平整度问题就显得更为严重.此外,由于经济上的原因,要用很大的压下量来轧制铝,每一道次的变形率可达50%.自1960年初以来就力图通过人工弯曲工作辊和冷却轧辊来控制带材的平整度.为此,沿轧辊长度上以75毫米的间距配置冷却剂.这样的控制只能在减小带材张力的情况下,通过眼睛观察带材平整度来实现,因而特别是在六十年代中期发展起来的高速轧机上就很不经济.
Aluminum strip rolling compared with the strip, the two materials due to the great difference between the elastic modulus, and because of the different coolant (steel is mainly used for emulsion, aluminum mineral oil), so the aluminum strip flatness problems appear More serious.In addition, due to economic reasons, to use a large reduction of the amount of rolling aluminum, the deformation rate of up to 50% of each pass since the early 1960 has sought to manually bending the work roll and cooling roll To control the flatness of the strip, for which reason the coolant is arranged at a pitch of 75 mm along the length of the roll This control can only be achieved by observing the flatness of the strip with the eye, with a reduced strip tension Especially in the high-speed rolling mill developed in the mid-1960s is very uneconomical.