No registration, no passwords; no pop-up ads -- just aloha, fun, & authoritative answers.
As an eBay Partner & Amazon Affiliate we receive compensation for qualifying purchases.
Home /
Search 🔍
the Site
pub  Where the world gathers for
plating, anodizing, & finishing Q&As since 1989


Quick Question: Typical Tinplating steel cathode surface area?

Please tell me the average surface area (or a general range)of a steel cathode used in the electrolytic production of tinplate, using a stannous fluoborate electrolyte. Leave a name so I can reference you for my school project. I desperately need this information so that I can carry out calculations. So far I have discovered a typical current density to be 24.3 miliamperes/centimeter squared, and need a figure for overall current - to do so, I must find the cathode surface area!

C Forrester
- Australia

Continuous tin plate on coil coated steel might typically be done on a 48" wide coil.

So the sheet will be 48" (1.5 meters) wide, (let's say only one side is tin plated, the other side being left untreated.)

But the tin is plated continuously, that means the coil is unwound on one side of the machine, winds through the plating tank and is wound up, plated, on the other side. The tank may typically be 100 feet long (30 meters) but may easily be 60 meters long. tom

tom pullizzi monitor   tom pullizi signature
Tom Pullizzi
Falls Township, Pennsylvania

Thanks, that's exactly what I needed to know. One thing I'm wondering about though - how is one side of the coil not plated? Is it not immersed? Please explain!

Catherine Forrester
- Australia

It is immersed, but without proximity to anodes, only a miniscule amount of current will carry around to backside. You can, however, plate both sides by arranging your tank so that the sheet passes in between two sets of anodes.

tom pullizzi animated    tomPullizziSignature
Tom Pullizzi
Falls Township, Pennsylvania

(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:

Chemicals &
Consult'g, Train'g
& Software

About/Contact  -  Privacy Policy  -  ©1995-2024, Pine Beach, New Jersey, USA  -  about "affil links"