Method for cleaning an aluminium workpiece

Method for cleaning an aluminium workpiece

  • CN 101,460,313 A
  • Filed: 06/06/2007
  • Published: 06/17/2009
  • Est. Priority Date: 06/06/2006
  • Status: Active Application
First Claim
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1. , litho-sheet of the aluminium workpiece that finishing is made of aluminium alloy-particularly or lithostrip-the method on surface, this method comprises the step of removing the greasy dirt of work piece surface at least with the oil removing medium, wherein this water-based oil removing medium comprises the sodium phosphate trimer of the compound of the following material of 1.5-3% weight:

  • 5-40% at least, the gluconic acid sodium salt of 3-10%, the nonionic of 3-8% and the compound of anion surfactant and optional 0.5-70%, the soda of preferred 30-70%, wherein NaOH joins in this water-based oil removing medium so that concentration sodium hydroxide is a 0.01-5% weight in the water-based oil removing medium, preferred 0.1-1.5% weight, more preferably 1-2.5% weight.

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