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How to get matte deposit from acid zinc bath

Q. Hello

Does anybody have an idea how to make an even matte surface from a normal acid zinc plating production. Of course I can just turn off the brightener, but will then have problems with metal distribution etc. I'm thinking for instance of a special pickling bath or a special additive to chromate passivation or ...?

Tom Erhard
Plating shop - Aalborg, Denmark
December 9, 2011

For alkaline zinc plating there is a dull process in the market.
Never heard of a dull acid zinc

Sara Michaeli
Tel-Aviv-Yafo, Israel
December 12, 2011

December 19, 2011

ZINC HS ( SULPHATE BATH GIVES MATTE DEPOSIT NORMALLY USED IN CONTINUOUS WIRES)
ZN METAL 70-180 G/L
CHLORIDE 4- 8 G/L
BORIC ACID 20-25 G/L
GRAIN REFINERS.
TEMP. 60 DEG. C
PH 3 TO 3.6
C.D 30 A/DM SQ.
V 8- 18 V
FILTRATION CONTINUOUS
AGITATION CATHODE ROD.
REGARDS.

Ajay Raina
Ludhiana, Punjab, India

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