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(2)微孔、气道,麦穗晶状组织铸轧板的铝液含氢量最大不得超过0.2ml/100g.一般工艺规定氢含量不得超过0.15ml/100g.由于原料、温度、湿度或除气不净等各种原因,当氢含量较高时,铝液中将溶解或残留过多的气体,使铸轧板产生微孔、孔洞、气道等缺陷.这些缺陷反映到铸轧板的表面就是麦穗晶状组织,带有这些缺陷的铸轧板经过高变形率冷轧到0.3mm时,这种缺陷依然存在.这种缺陷反映到板基的表面就是孤立地很长的线束.该线束所在区域同板基
(2) The maximum hydrogen content of liquid aluminum in micropore, airway and wheat crystal casting slabs shall not exceed 0.2ml / 100g. The general process stipulates that the hydrogen content shall not exceed 0.15ml / 100g. Due to the raw material, temperature, humidity or Degassing and other reasons, when the hydrogen content is high, the liquid aluminum will dissolve or remain too much gas, so that cast-rolled plate produces micropores, holes, airways and other defects These defects reflected in the cast-rolled plate Of the surface is the wheat crystal structure, with these defects in the cast-rolled plate after the high deformation rate of cold-rolled to 0.3mm, this defect still exists.This defect reflects the surface of the substrate is isolated long wire harness The area of the harness is the same as the base plate