Process for the electrochemical graining of aluminum for use as

Details Process for the electrochemical graining of aluminum for use as Process for the electrochemical graining of aluminum for use as

1986-09-19

1987-06-09

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25F 304

Patent

active

046718591

ABSTRACT:
The present invention relates to a process for the electrochemical graining of aluminum or aluminum alloys useful for printing plate supports, in which process an acid electrolyte containing .beta.-diketo compounds is employed; preferred are hydrochloric or nitric acid with an acetylacetone admixture. The printing plate supports grained by the process possess a particularly uniform, pit-free and overall graining structure.

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"The Alternating Current Etching of Aluminum Lithographic Sheet", A. J. Dowell, published in Transactions of the Institute of Metal Finishing, 1979, vol. 57, pp. 138-144.

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