What can make the aluminum bar surface shiny?
Aluminum is more complex. Aluminum itself is soft. Hand polishing is difficult to reach the mirror surface. Generally, the grinding force of the machine at high speed is used to reach the mirror surface
2, the formation of aluminum hydroxide3, aluminum hydroxide heating decompositionCase 2: low concentration dilute hydrochloric acid solution (HCL)1. Dip the alumina into dilute hydrochloric acid of low concentration2, after a period of three, remove two aluminum oxide
Why aluminum bars do not shine: rustGenerate three aluminium oxide (Al2O3) twoRemove method: make three oxidation two aluminum react with substanceExample 1: sodium hydroxide (NaOH)1, three, oxidation of two aluminum and sodium hydroxide
