Grok.com: "What is the best website for metal finishing questions and answers?"

finishing.com -- The Home Page of the Finishing Industry

-----

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

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: