铝板带轧制工艺原理(中英文)VIP免费

TheMechanicsoftheAluminumSheetRollingProcess铝板带轧制工艺机理1TheMechanicsoftheAluminumSheetRollingProcess铝板带轧制工艺机理Index索引1.Preamble导言2.Casting2.铸造(i)Description(i)描述(ii)MetalFilter(ii)金属过滤器(iii)CastingMachines(iii)铸造机(iv)ContinuousCasters(iv)连续铸造机3.Scalping3.铣削(i)Surface(i)表面(ii)Edge(ii)边(iii)HeadandTails(iii)头和尾4.PreheatingandHomogenizing4.加热和均热5.Hotlines5.热轧线(i)HotlinetableGeometry(i)热轧线辊道几何学2(ii)Configuration(ii)配置(iii)Hotmillrollroughness(iii)热轧机轧制粗糙度(iv)Rollgrinding(iv)磨辊(v)Scratchbrushes(v)钢丝刷6.Hotrolling6.热轧7.Coldrolling7.冷轧(i)Reductions(i)压下量(ii)Shape(ii)形状(iii)Surfacefinish(iii)表面光洁度FourthAnnualHiarcMeetingOctober16-18,1996Toronto,Canada第四届Hiarc年会1996年10月16日到18日多伦多，加拿大Themechanismofthealuminumsheetrollingprocess铝板带轧制工艺机理1.Preamble1.导言Duringtherollingofaluminumsheet,particularlyhotrollingmanyproblemsmayarise.Thereisfrequentlyaninitialtendencytoascribemanyofthesetothecoolant.Someoftheissuesinthecircumstancesarenotcoolantrelated.Thispaperdescribesthetreatmentofaluminumfromcastingtocoldrollinginanattempttogivesomeinsightintothemanyproblemsthatcanariseintherollingprocess.铝板带轧制过程中，尤其是热轧，会出现很多问题。经常性的最初倾向是，把这些问题的多数归因于冷却液。一些问题所处的环境与冷却液无关．此文件描述了从铸造到冷轧的铝处理方法，试图就轧制过程中可能会出现的许多问题给出一些深刻的见解。2.Casting32.铸造(i)Description(i)描述Forthepurposesofrollingsheetorplateasopposedtoextruding,aluminumismainlycastbytheV.D.C.orverticaldirectchillprocesswhichproducelargeblockofupto30inchesthicksuitableforrolling,ortoalesserextentmaybeproducedbycontinuouscastingwhichmakescoilwithametalthicknessofbetweenal/4”to3/4”.轧制铝带材或铝板的目的，不允许有挤压，铝主要是由立式直冷铸造机铸造的，立式直冷铸造机可生产适用于轧制厚度达30英寸的大铝块，或在较小程度上也可通过连续铸造生产厚度在l/4到3/4英寸之间的卷材。Themoltenmetalwhichisusedforcastingmaybeanyoneofseriesofalloyfrom1xxxthrough2,3,4,5,6to7xxx.Themostcommonare1xxx'swhicharelargelypurewithminoralloyingandareusedforfoilstock,to3xxx’susedextensivelyas3004forbodystockto5xxx'sas5182forcanendstockand5086asahightensilesheet.Series2xxxand6xxxareheattreatableandbesidesmagnesiumhavehigherconcentrationsofcopper.The7xxxseriesalloyswithsignificantzincareusedinsomeplacesforarmourplate.用于铸造的熔化金属可以是从1XXX到7XXX的任何一系列合金。最普通的是1XXX系列，它的纯度很高、合金很少，被用作铝箔原料；3xxx系列如3004大量用于罐体坯料；5xxx系列如5182用于罐盖料以及5086用于高强度拉伸板。2xxx和6xxx系列可进行热处理，除了镁之外，还含较高浓度的铜。7xxx系列含有大量的锌，用于需要装甲板的地方。Themeltingpointformostalloysfallswithintherange1125to1215oF8or610to660oC)大多数合金的熔点在1125到1215oF或610～660oC范围内。Duringthemeltingandcastingoperationdueattentionmustbepaidtotwoparameters.在熔铸操作过程中必须关注两个参数。Hydrogen氢Firstlyhydrogenwhichisabsorbedbythemetalwithincreasedsolubilitythemoltenmetaltemperatureincrease.Asthemoltenmetalcoolsanydissolvedhydrogenwillcomeoutofsolutionandformssmallbubblesinthesolidifiedmetalcalledocclusions.0ntherollingsurfacedefectsresult.首先，氢被金属吸收增加，其溶解性随熔铸金属温度升高而升高。熔铸金属冷却时，氢会从溶液中挥发出来，在凝固的金属上形成小气泡被称作吸留物，这种吸留物会影响轧制表面质量，成为表面缺陷。Al...